129 results on '"Stone, K."'
Search Results
2. Moderators of resistance-based exercise programs' effect on sarcopenia-related measures in men with prostate cancer previously or currently undergoing androgen deprivation therapy: An individual patient data meta-analysis.
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Lopez, P., Newton, R.U., Taaffe, D.R., Winters-Stone, K., Galvão, D.A., Buffart, L.M., Lopez, P., Newton, R.U., Taaffe, D.R., Winters-Stone, K., Galvão, D.A., and Buffart, L.M.
- Abstract
01 juni 2023, Item does not contain fulltext, INTRODUCTION: Older men with prostate cancer are commonly affected by reductions in lean mass and physical function following androgen deprivation therapy (ADT). Resistance-based exercise programs are critical to counteract the musculoskeletal toxicities derived from prostate cancer treatment and aging. However, there is significant variability in the effects of exercise interventions. Examining demographic and clinical moderators of exercise effects in this patient group can assist in identifying which subgroups of patients benefit most. Therefore, we examined the effects and moderators of resistance-based exercise programs on sarcopenia-related outcomes that included lean mass, skeletal muscle index, physical function, and muscle strength in older men with prostate cancer. MATERIALS AND METHODS: Data were retrieved from the Predicting OptimaL cAncer RehabIlitation and Supportive care (POLARIS) consortium. For the present study, we included data from trials that examined the effects of supervised resistance-based exercise interventions on lean mass outcomes, muscle strength, and physical function in patients with prostate cancer previously or currently treated with ADT. Linear mixed models were undertaken to analyse the effects of resistance-based exercise programs considering the clustering of patients within studies. Effects were evaluated by regressing the study group on the post-intervention value of the outcome adjusted for the baseline value, while potential moderators were examined by adding the moderator and its interaction term into the regression model. RESULTS: A total of 560 patients with prostate cancer (age: 69.5 ± 7.8 yrs.; body mass index: 28.6 ± 4.0 kg.m(-2)) previously or currently treated with ADT were included. Resistance-based exercise programs resulted in significant effects on whole-body and appendicular lean mass and the skeletal muscle index (P < 0.05), with improvements observed across different characteristics. Improvements were also obse
- Published
- 2023
3. The myometrial-cervical ratio (MCR): Assessing the diagnostic accuracy of a novel ultrasound measurement in the diagnosis of adenomyosis.
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Mooney S., Roberts R., McGinnes D., Ellett L., Maher P., Ireland-Jenkin K., Stone K., Mooney S., Roberts R., McGinnes D., Ellett L., Maher P., Ireland-Jenkin K., and Stone K.
- Abstract
Background: Adenomyosis is histologically defined by the presence of endometrial glands and stroma in the myometrium. To date, there are no standardised ultrasound findings that reliably predict histological adenomyosis. Aim(s): This study aimed to determine the diagnostic accuracy of a novel sonographic measurement for adenomyosis, the myometrial-cervical ratio (MCR), when compared with histopathological diagnosis. Material(s) and Method(s): A single-centre retrospective study was performed. The MCR was calculated from the pre-operative ultrasound, and histopathology reviewed for each case. Accuracy data were analysed in the form of 2 x 2 tables. The discriminative value of the MCR was summarised with a receiver operator characteristic (ROC) curve. Sub-analysis examined the impact of fibroids, hormonal suppression, menopausal status, parity and indication for surgery. Result(s): Between 1 January 2016 and 31 December 2018, 982 patients underwent hysterectomy for benign non-obstetric indication and adequate pre-operative ultrasound was available for 260. The MCR demonstrated limited diagnostic ability for adenomyosis (area under the receiver operating characteristic curve (AUROC) 0.58, 95% CI 0.51-0.65). However, when applied to cases with no uterine fibroid included in the MCR calculation (n = 133) there was a strong association between MCR and diagnosis of adenomyosis (odds ratio: 5.79, 95% CI: 2.15, 15.62, P = 0.001) with AUROC for this model 0.68 (95% CI: 0.59, 0.77). At an MCR cut-point of 1.74, sensitivity is 67.16% and specificity is 66.15%, with 66.67% of samples correctly classified. Conclusion(s): While diagnostic accuracy was suboptimal, the MCR outperforms traditional ultrasound diagnostic features of adenomyosis. The MCR may offer a simple imaging measurement for adenomyosis.Copyright © 2021 The Royal Australian and New Zealand College of Obstetricians and Gynaecologists
- Published
- 2022
4. The 2019–2020 volcanic eruption of Late’iki (Metis Shoal), Tonga
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Yeo, I. A., McIntosh, I. M., Bryan, S. E., Tani, K., Dunbabin, M., Metz, D., Collins, P. C., Stone, K., Manu, M. S., Yeo, I. A., McIntosh, I. M., Bryan, S. E., Tani, K., Dunbabin, M., Metz, D., Collins, P. C., Stone, K., and Manu, M. S.
- Abstract
Late’iki (previously known as Metis Shoal) is a highly active volcano in the Tofua arc with at least four temporary island-building eruptions and one submarine eruption in the last 55 years. The most recent eruption, commencing in October 2019, resulted in lava effusion and subsequent phreatic explosions, the construction of a short-lived island that was quickly eroded by wave action and possibly further phreatic activity that continued into January 2020. The two-pyroxene dacite from the 2019 eruption is similar to the 1967/8 eruptions suggesting the magma is residual from earlier eruptions and has not undergone further differentiation in the last 50 years. New observations of the 2019 eruption site confirm the lava-dominant character of the volcano summit but a thin veneer of wave-reworked, finely fragmented lava material remains that is interpreted to have been produced by phreatic explosions from hot rock-water interactions during the effusive eruption. A notable absence of quench-fragmented hyaloclastite breccias suggests that non-explosive quench fragmentation processes were minimal at these shallow depths or that hyaloclastite debris has resedimented to greater depths beyond our summit survey area.
- Published
- 2022
5. The myometrial-cervical ratio (MCR): Assessing the diagnostic accuracy of a novel ultrasound measurement in the diagnosis of adenomyosis
- Author
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Mooney, S, Roberts, R, McGinnes, D, Ellett, L, Maher, P, Ireland-Jenkin, K, Stone, K, Mooney, S, Roberts, R, McGinnes, D, Ellett, L, Maher, P, Ireland-Jenkin, K, and Stone, K
- Abstract
BACKGROUND: Adenomyosis is histologically defined by the presence of endometrial glands and stroma in the myometrium. To date, there are no standardised ultrasound findings that reliably predict histological adenomyosis. AIMS: This study aimed to determine the diagnostic accuracy of a novel sonographic measurement for adenomyosis, the myometrial-cervical ratio (MCR), when compared with histopathological diagnosis. MATERIALS AND METHODS: A single-centre retrospective study was performed. The MCR was calculated from the pre-operative ultrasound, and histopathology reviewed for each case. Accuracy data were analysed in the form of 2 × 2 tables. The discriminative value of the MCR was summarised with a receiver operator characteristic (ROC) curve. Sub-analysis examined the impact of fibroids, hormonal suppression, menopausal status, parity and indication for surgery. RESULTS: Between 1 January 2016 and 31 December 2018, 982 patients underwent hysterectomy for benign non-obstetric indication and adequate pre-operative ultrasound was available for 260. The MCR demonstrated limited diagnostic ability for adenomyosis (area under the receiver operating characteristic curve (AUROC) 0.58, 95% CI 0.51-0.65). However, when applied to cases with no uterine fibroid included in the MCR calculation (n = 133) there was a strong association between MCR and diagnosis of adenomyosis (odds ratio: 5.79, 95% CI: 2.15, 15.62, P = 0.001) with AUROC for this model 0.68 (95% CI: 0.59, 0.77). At an MCR cut-point of 1.74, sensitivity is 67.16% and specificity is 66.15%, with 66.67% of samples correctly classified. CONCLUSIONS: While diagnostic accuracy was suboptimal, the MCR outperforms traditional ultrasound diagnostic features of adenomyosis. The MCR may offer a simple imaging measurement for adenomyosis.
- Published
- 2022
6. Leg Fidgeting Improves Executive Function following Prolonged Sitting with a Typical Western Meal: A Randomized, Controlled Cross-Over Trial.
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Fryer, S, Paterson, C, Stoner, L, Brown, MA, Faulkner, J, Turner, LA, Aguirre-Betolaza, AM, Zieff, G, Stone, K, Fryer, S, Paterson, C, Stoner, L, Brown, MA, Faulkner, J, Turner, LA, Aguirre-Betolaza, AM, Zieff, G, and Stone, K
- Abstract
Prolonged uninterrupted sitting and a typical Western meal, high in fat and refined sugar, can additively impair cognitive and cerebrovascular functions. However, it is unknown whether interrupting these behaviours, with a simple desk-based activity, can attenuate the impairment. The aim of this study was to determine whether regular leg fidgeting can off-set the detrimental effects of prolonged sitting following the consumption of a typical Western meal, on executive and cerebrovascular function. Using a randomized cross-over design, 13 healthy males consumed a Western meal and completed 180-min of prolonged sitting with leg fidgeting of 1 min on/4 min off (intervention [INT]) and without (control [CON]). Cognitive function was assessed pre and post sitting using the Trail Maker Test (TMT) parts A and B. Common carotid artery (CCA) blood flow, as an index of brain flow, was measured pre and post, and cerebral (FP1) perfusion was measured continuously. For TMT B the CON trial significantly increased (worsened) completion time (mean difference [MD] = 5.2 s, d = 0.38), the number of errors (MD = 3.33, d = 0.68) and cognitive fatigue (MD = 0.73, d = 0.92). Compared to CON, the INT trial significantly improved completion time (MD = 2.3 s, d = 0.97), and prevented declines in cognitive fatigue and a reduction in the number of errors. No significant changes in cerebral perfusion or CCA blood flow were found. Leg fidgeting for 1-min on/4-min off following a meal high in fats and refined sugars attenuated the impairment in executive function. This attenuation in executive function may not be caused by alterations in CCA blood flow or cerebral perfusion.
- Published
- 2022
7. Leg Fidgeting Improves Executive Function following Prolonged Sitting with a Typical Western Meal: A Randomized, Controlled Cross-Over Trial.
- Author
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Fryer, S, Paterson, C, Stoner, L, Brown, MA, Faulkner, J, Turner, LA, Aguirre-Betolaza, AM, Zieff, G, Stone, K, Fryer, S, Paterson, C, Stoner, L, Brown, MA, Faulkner, J, Turner, LA, Aguirre-Betolaza, AM, Zieff, G, and Stone, K
- Abstract
Prolonged uninterrupted sitting and a typical Western meal, high in fat and refined sugar, can additively impair cognitive and cerebrovascular functions. However, it is unknown whether interrupting these behaviours, with a simple desk-based activity, can attenuate the impairment. The aim of this study was to determine whether regular leg fidgeting can off-set the detrimental effects of prolonged sitting following the consumption of a typical Western meal, on executive and cerebrovascular function. Using a randomized cross-over design, 13 healthy males consumed a Western meal and completed 180-min of prolonged sitting with leg fidgeting of 1 min on/4 min off (intervention [INT]) and without (control [CON]). Cognitive function was assessed pre and post sitting using the Trail Maker Test (TMT) parts A and B. Common carotid artery (CCA) blood flow, as an index of brain flow, was measured pre and post, and cerebral (FP1) perfusion was measured continuously. For TMT B the CON trial significantly increased (worsened) completion time (mean difference [MD] = 5.2 s, d = 0.38), the number of errors (MD = 3.33, d = 0.68) and cognitive fatigue (MD = 0.73, d = 0.92). Compared to CON, the INT trial significantly improved completion time (MD = 2.3 s, d = 0.97), and prevented declines in cognitive fatigue and a reduction in the number of errors. No significant changes in cerebral perfusion or CCA blood flow were found. Leg fidgeting for 1-min on/4-min off following a meal high in fats and refined sugars attenuated the impairment in executive function. This attenuation in executive function may not be caused by alterations in CCA blood flow or cerebral perfusion.
- Published
- 2022
8. The use of the myometrial-cervical ratio in the ultrasound diagnosis of adenomyosis - A validation study
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McCaughey, T, Mooney, S, Harlow, K, Healey, M, Stone, K, McCaughey, T, Mooney, S, Harlow, K, Healey, M, and Stone, K
- Abstract
BACKGROUND: Adenomyosis is a benign disorder defined by ectopic endometrial glands within the uterine myometrium. A study by Mooney et al reported the myometrial-cervical ratio (MCR), a novel ultrasound measurement that was found to improve the preoperative diagnosis of adenomyosis. AIMS: To validate the association between sonographic MCR and adenomyosis confirmed on histopathology in an independent patient group. MATERIALS AND METHODS: Single-centre retrospective cohort study including women who underwent hysterectomy between 1 January 2016 and 31 December 2018 for a benign, non-obstetric indication with an ultrasound at the study centre prior to surgery. Clinical details and histopathology were extracted. Ultrasound images were reviewed by a gynaecology ultrasound subspecialist blinded to histological findings. RESULTS: Eight hundred eighty-seven patients underwent hysterectomy in the study period for eligible indications; 317 had an ultrasound at the study centre and were included. There was no statistically significant association between the MCR and adenomyosis on histology when all patients were included; however, increased MCR was associated with adenomyosis when those with fibroids on ultrasound were excluded. The area under the receiver operating characteristic for this model was 0.614 (95% CI: 0.53 to 0.69). The optimal MCR cut-point in this subgroup was 1.79, which achieved 55.6% sensitivity and 62.8% specificity, with 58.5% correctly classified. There was no significant difference in MCR compared to traditional ultrasound markers of adenomyosis. CONCLUSIONS: In a population undergoing hysterectomy for benign and non-obstetric indications, the MCR applied to preoperative ultrasound was only weakly associated with a histological diagnosis of adenomyosis.
- Published
- 2022
9. Borging vitale en kwetsbare functies bij overstromingen : Deltafact
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Linden, L. van der, Franssen, R., Stone, K., Bruijn, K. de, Hounjet, M.W.A., Burzel, A., Jonge, A.S.E. de, Linden, L. van der, Franssen, R., Stone, K., Bruijn, K. de, Hounjet, M.W.A., Burzel, A., and Jonge, A.S.E. de
- Abstract
Vitale en kwetsbare functies (of infrastructuur) zijn producten, diensten en de onderliggende processen die, als zij uitvallen, maatschappelijke ontwrichting kunnen veroorzaken. Deze factsheet geeft een overzicht van huidige kennis en projecten omtrent dit onderwerp. De informatie komt grotendeels van het Kennisportaal Klimaatadaptatie en is aangevuld met informatie uit andere bronnen.
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- 2022
10. The 2019–2020 volcanic eruption of Late’iki (Metis Shoal), Tonga
- Author
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Yeo, I. A., McIntosh, I. M., Bryan, S. E., Tani, K., Dunbabin, M., Metz, D., Collins, P. C., Stone, K., Manu, M. S., Yeo, I. A., McIntosh, I. M., Bryan, S. E., Tani, K., Dunbabin, M., Metz, D., Collins, P. C., Stone, K., and Manu, M. S.
- Abstract
Late’iki (previously known as Metis Shoal) is a highly active volcano in the Tofua arc with at least four temporary island-building eruptions and one submarine eruption in the last 55 years. The most recent eruption, commencing in October 2019, resulted in lava effusion and subsequent phreatic explosions, the construction of a short-lived island that was quickly eroded by wave action and possibly further phreatic activity that continued into January 2020. The two-pyroxene dacite from the 2019 eruption is similar to the 1967/8 eruptions suggesting the magma is residual from earlier eruptions and has not undergone further differentiation in the last 50 years. New observations of the 2019 eruption site confirm the lava-dominant character of the volcano summit but a thin veneer of wave-reworked, finely fragmented lava material remains that is interpreted to have been produced by phreatic explosions from hot rock-water interactions during the effusive eruption. A notable absence of quench-fragmented hyaloclastite breccias suggests that non-explosive quench fragmentation processes were minimal at these shallow depths or that hyaloclastite debris has resedimented to greater depths beyond our summit survey area.
- Published
- 2022
11. The myometrial-cervical ratio (MCR): Assessing the diagnostic accuracy of a novel ultrasound measurement in the diagnosis of adenomyosis.
- Author
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Mooney S., Roberts R., McGinnes D., Ellett L., Maher P., Ireland-Jenkin K., Stone K., Mooney S., Roberts R., McGinnes D., Ellett L., Maher P., Ireland-Jenkin K., and Stone K.
- Abstract
Background: Adenomyosis is histologically defined by the presence of endometrial glands and stroma in the myometrium. To date, there are no standardised ultrasound findings that reliably predict histological adenomyosis. Aim(s): This study aimed to determine the diagnostic accuracy of a novel sonographic measurement for adenomyosis, the myometrial-cervical ratio (MCR), when compared with histopathological diagnosis. Material(s) and Method(s): A single-centre retrospective study was performed. The MCR was calculated from the pre-operative ultrasound, and histopathology reviewed for each case. Accuracy data were analysed in the form of 2 x 2 tables. The discriminative value of the MCR was summarised with a receiver operator characteristic (ROC) curve. Sub-analysis examined the impact of fibroids, hormonal suppression, menopausal status, parity and indication for surgery. Result(s): Between 1 January 2016 and 31 December 2018, 982 patients underwent hysterectomy for benign non-obstetric indication and adequate pre-operative ultrasound was available for 260. The MCR demonstrated limited diagnostic ability for adenomyosis (area under the receiver operating characteristic curve (AUROC) 0.58, 95% CI 0.51-0.65). However, when applied to cases with no uterine fibroid included in the MCR calculation (n = 133) there was a strong association between MCR and diagnosis of adenomyosis (odds ratio: 5.79, 95% CI: 2.15, 15.62, P = 0.001) with AUROC for this model 0.68 (95% CI: 0.59, 0.77). At an MCR cut-point of 1.74, sensitivity is 67.16% and specificity is 66.15%, with 66.67% of samples correctly classified. Conclusion(s): While diagnostic accuracy was suboptimal, the MCR outperforms traditional ultrasound diagnostic features of adenomyosis. The MCR may offer a simple imaging measurement for adenomyosis.Copyright © 2021 The Royal Australian and New Zealand College of Obstetricians and Gynaecologists
- Published
- 2021
12. The myometrial-cervical ratio (MCR): Assessing the diagnostic accuracy of a novel ultrasound measurement in the diagnosis of adenomyosis.
- Author
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Mooney S., Roberts R., McGinnes D., Ellett L., Maher P., Ireland-Jenkin K., Stone K., Mooney S., Roberts R., McGinnes D., Ellett L., Maher P., Ireland-Jenkin K., and Stone K.
- Abstract
Background: Adenomyosis is histologically defined by the presence of endometrial glands and stroma in the myometrium. To date, there are no standardised ultrasound findings that reliably predict histological adenomyosis. Aim(s): This study aimed to determine the diagnostic accuracy of a novel sonographic measurement for adenomyosis, the myometrial-cervical ratio (MCR), when compared with histopathological diagnosis. Material(s) and Method(s): A single-centre retrospective study was performed. The MCR was calculated from the pre-operative ultrasound, and histopathology reviewed for each case. Accuracy data were analysed in the form of 2 x 2 tables. The discriminative value of the MCR was summarised with a receiver operator characteristic (ROC) curve. Sub-analysis examined the impact of fibroids, hormonal suppression, menopausal status, parity and indication for surgery. Result(s): Between 1 January 2016 and 31 December 2018, 982 patients underwent hysterectomy for benign non-obstetric indication and adequate pre-operative ultrasound was available for 260. The MCR demonstrated limited diagnostic ability for adenomyosis (area under the receiver operating characteristic curve (AUROC) 0.58, 95% CI 0.51-0.65). However, when applied to cases with no uterine fibroid included in the MCR calculation (n = 133) there was a strong association between MCR and diagnosis of adenomyosis (odds ratio: 5.79, 95% CI: 2.15, 15.62, P = 0.001) with AUROC for this model 0.68 (95% CI: 0.59, 0.77). At an MCR cut-point of 1.74, sensitivity is 67.16% and specificity is 66.15%, with 66.67% of samples correctly classified. Conclusion(s): While diagnostic accuracy was suboptimal, the MCR outperforms traditional ultrasound diagnostic features of adenomyosis. The MCR may offer a simple imaging measurement for adenomyosis.Copyright © 2021 The Royal Australian and New Zealand College of Obstetricians and Gynaecologists
- Published
- 2021
13. Low Protein Intake Irrespective of Source is Associated with Higher Mortality Among Older Community-dwelling Men.
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Langsetmo, L, Langsetmo, L, Harrison, S, Jonnalagadda, S, Pereira, SL, Shikany, JM, Farsijani, S, Lane, NE, Cauley, JA, Stone, K, Cawthon, PM, Langsetmo, L, Langsetmo, L, Harrison, S, Jonnalagadda, S, Pereira, SL, Shikany, JM, Farsijani, S, Lane, NE, Cauley, JA, Stone, K, and Cawthon, PM
- Abstract
ObjectivesOur aim was to determine the association between protein intake (overall and by source) and all-cause and cause-specific mortality among older men.DesignProspective cohort study.Setting5790 ambulatory community-dwelling older men from multicenter Osteoporotic Fractures in Men (MrOS) study.MeasurementsTotal energy and protein intake, and protein intake by source (dairy, non-dairy animal, plant) were assessed using a 69-item food frequency questionnaire. We included up to 10-year follow-up with adjudicated cardiovascular, cancer and other mortality outcomes. We used time-to-event analysis with protein exposures, mortality outcome, and adjusted for possible confounders including age, center, education, race, smoking, alcohol use, physical activity, weight, total energy intake (TEI), and comorbidities. Hazard ratios were expressed per each unit=2.9% TEI decrement for all protein intake variables.ResultsThe mean (SD) baseline age of 5790 men was 73.6 (5.8) y. There were 1611 deaths and 211 drop-outs prior to 10 years, and 3868 men who were alive at the 10-year follow-up. The mean (SD) total protein intake was 64.7 (25.8) g/d, while the mean (SD) intake expressed as percent of total energy intake (%TEI) was 16.1 (2.9) %TEI. Lower protein intake was associated with an increased risk of death, with unadjusted HR=1.11 (95% CI: 1.06, 1.17) and adjusted HR=1.09 (95% CI: 1.04, 1.14) and the associations for protein intake by source were similar. The adjusted HR for cancer mortality was HR=1.13 (95% CI: 1.03, 1.25) while the association for CVD mortality was HR=1.08 (95% CI: 0.99, 1.18).ConclusionsLow protein intake, irrespective of source, was associated with a modest increase in risk of all-cause and cause-specific mortality among older men. Special consideration should be given to level of protein intake among older adults.
- Published
- 2020
14. Low Protein Intake Irrespective of Source is Associated with Higher Mortality Among Older Community-dwelling Men.
- Author
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Langsetmo, L, Langsetmo, L, Harrison, S, Jonnalagadda, S, Pereira, SL, Shikany, JM, Farsijani, S, Lane, NE, Cauley, JA, Stone, K, Cawthon, PM, Langsetmo, L, Langsetmo, L, Harrison, S, Jonnalagadda, S, Pereira, SL, Shikany, JM, Farsijani, S, Lane, NE, Cauley, JA, Stone, K, and Cawthon, PM
- Abstract
ObjectivesOur aim was to determine the association between protein intake (overall and by source) and all-cause and cause-specific mortality among older men.DesignProspective cohort study.Setting5790 ambulatory community-dwelling older men from multicenter Osteoporotic Fractures in Men (MrOS) study.MeasurementsTotal energy and protein intake, and protein intake by source (dairy, non-dairy animal, plant) were assessed using a 69-item food frequency questionnaire. We included up to 10-year follow-up with adjudicated cardiovascular, cancer and other mortality outcomes. We used time-to-event analysis with protein exposures, mortality outcome, and adjusted for possible confounders including age, center, education, race, smoking, alcohol use, physical activity, weight, total energy intake (TEI), and comorbidities. Hazard ratios were expressed per each unit=2.9% TEI decrement for all protein intake variables.ResultsThe mean (SD) baseline age of 5790 men was 73.6 (5.8) y. There were 1611 deaths and 211 drop-outs prior to 10 years, and 3868 men who were alive at the 10-year follow-up. The mean (SD) total protein intake was 64.7 (25.8) g/d, while the mean (SD) intake expressed as percent of total energy intake (%TEI) was 16.1 (2.9) %TEI. Lower protein intake was associated with an increased risk of death, with unadjusted HR=1.11 (95% CI: 1.06, 1.17) and adjusted HR=1.09 (95% CI: 1.04, 1.14) and the associations for protein intake by source were similar. The adjusted HR for cancer mortality was HR=1.13 (95% CI: 1.03, 1.25) while the association for CVD mortality was HR=1.08 (95% CI: 0.99, 1.18).ConclusionsLow protein intake, irrespective of source, was associated with a modest increase in risk of all-cause and cause-specific mortality among older men. Special consideration should be given to level of protein intake among older adults.
- Published
- 2020
15. Editorial: The Approved Mental Health Professional. Research Informed Practice; Practice Informed Research
- Author
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Vicary, S, Stone, K, Hemmington, J, Leah, C, Vicary, S, Stone, K, Hemmington, J, and Leah, C
- Published
- 2020
16. Low Protein Intake Irrespective of Source is Associated with Higher Mortality Among Older Community-dwelling Men.
- Author
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Langsetmo, L, Langsetmo, L, Harrison, S, Jonnalagadda, S, Pereira, SL, Shikany, JM, Farsijani, S, Lane, NE, Cauley, JA, Stone, K, Cawthon, PM, Langsetmo, L, Langsetmo, L, Harrison, S, Jonnalagadda, S, Pereira, SL, Shikany, JM, Farsijani, S, Lane, NE, Cauley, JA, Stone, K, and Cawthon, PM
- Abstract
ObjectivesOur aim was to determine the association between protein intake (overall and by source) and all-cause and cause-specific mortality among older men.DesignProspective cohort study.Setting5790 ambulatory community-dwelling older men from multicenter Osteoporotic Fractures in Men (MrOS) study.MeasurementsTotal energy and protein intake, and protein intake by source (dairy, non-dairy animal, plant) were assessed using a 69-item food frequency questionnaire. We included up to 10-year follow-up with adjudicated cardiovascular, cancer and other mortality outcomes. We used time-to-event analysis with protein exposures, mortality outcome, and adjusted for possible confounders including age, center, education, race, smoking, alcohol use, physical activity, weight, total energy intake (TEI), and comorbidities. Hazard ratios were expressed per each unit=2.9% TEI decrement for all protein intake variables.ResultsThe mean (SD) baseline age of 5790 men was 73.6 (5.8) y. There were 1611 deaths and 211 drop-outs prior to 10 years, and 3868 men who were alive at the 10-year follow-up. The mean (SD) total protein intake was 64.7 (25.8) g/d, while the mean (SD) intake expressed as percent of total energy intake (%TEI) was 16.1 (2.9) %TEI. Lower protein intake was associated with an increased risk of death, with unadjusted HR=1.11 (95% CI: 1.06, 1.17) and adjusted HR=1.09 (95% CI: 1.04, 1.14) and the associations for protein intake by source were similar. The adjusted HR for cancer mortality was HR=1.13 (95% CI: 1.03, 1.25) while the association for CVD mortality was HR=1.08 (95% CI: 0.99, 1.18).ConclusionsLow protein intake, irrespective of source, was associated with a modest increase in risk of all-cause and cause-specific mortality among older men. Special consideration should be given to level of protein intake among older adults.
- Published
- 2020
17. Editorial: The Approved Mental Health Professional. Research Informed Practice; Practice Informed Research
- Author
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Vicary, S, Stone, K, Hemmington, J, Leah, C, Vicary, S, Stone, K, Hemmington, J, and Leah, C
- Published
- 2020
18. Large impacts, past and future, of ozone‐depleting substances on Brewer‐Dobson circulation trends: a multimodel assessment
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Polvani, L. M., Wang, L., Ábalos Álvarez, Marta, Butchart, N., Chipperfield, M. P., Dameris, M., Deushi, M., Dhomse, S. S., Jöckel, P., Stone, K. A., Polvani, L. M., Wang, L., Ábalos Álvarez, Marta, Butchart, N., Chipperfield, M. P., Dameris, M., Deushi, M., Dhomse, S. S., Jöckel, P., and Stone, K. A.
- Abstract
Atraccion de Talento de la Comunidad de Madrid (2016-T2/AMB-1405) Project STEADY (CGL2017-83198-R) Artículo firmado por 15 autores., Substantial increases in the atmospheric concentration of well-mixed greenhouse gases (notably CO_(2)), such as those projected to occur by the end of the 21st century under large radiative forcing scenarios, have long been known to cause an acceleration of the Brewer-Dobson circulation (BDC) in climate models. More recently, however, several single-model studies have proposed that ozone-depleting substances might also be important drivers of BDC trends. As these studies were conducted with different forcings over different periods, it is difficult to combine them to obtain a robust quantitative picture of the relative importance of ozone-depleting substances as drivers of BDC trends. To this end, we here analyze—over identical past and future periods—the output from 20 similarly forced models, gathered from two recent chemistry-climate modeling intercomparison projects. Our multimodel analysis reveals that ozone-depleting substances are responsible for more than half of the modeled BDC trends in the two decades 1980–2000.We also find that, as a consequence of the Montreal Protocol, decreasing concentrations of ozone-depleting substances in coming decades will strongly decelerate the BDC until the year 2080, reducing the age-of-air trends by more than half, and will thus substantially mitigate the impact of increasing CO_(2). As ozone-depleting substances impact BDC trends, primarily, via the depletion/recovery of stratospheric ozone over the South Pole, they impart seasonal and hemispheric asymmetries to the trends which may offer opportunities for detection in coming decades., Fudan University, National Natural Science Foundation of China (NSFC), Comunidad de Madrid, Ministerio de Economía, Industria y Competitividad (España), Met Office Hadley Centre Programme - BEIS, Met Office Hadley Centre Programme - Defra, European Commission, NZ Governments Strategic Science Investment Fund (SSIF), Royal Society of New Zealand, Depto. de Física de la Tierra y Astrofísica, Fac. de Ciencias Físicas, TRUE, pub, Pagado por el autor
- Published
- 2019
19. Effects and moderators of exercise on sleep in adults with cancer : Individual patient data and aggregated meta-analyses
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Bernard, P, Savard, J, Steindorf, K, Sweegers, M G, Courneya, K S, Newton, R U, Aaronson, N K, Jacobsen, P B, May, A M, Galvao, D A, Chinapaw, M J, Stuiver, M M, Griffith, K A, Mesters, I, Knoop, H, Goedendorp, M M, Bohus, M, Thorsen, L, Schmidt, M E, Ulrich, C M, Sonke, G S, van Harten, W, Winters-Stone, K M, Velthuis, M J, Taaffe, D R, van Mechelen, W, Kersten, M J, Nollet, F, Wenzel, J, Wiskemann, J, Verdonck-de Leeuw, I M, Brug, J, Buffart, L M, Bernard, P, Savard, J, Steindorf, K, Sweegers, M G, Courneya, K S, Newton, R U, Aaronson, N K, Jacobsen, P B, May, A M, Galvao, D A, Chinapaw, M J, Stuiver, M M, Griffith, K A, Mesters, I, Knoop, H, Goedendorp, M M, Bohus, M, Thorsen, L, Schmidt, M E, Ulrich, C M, Sonke, G S, van Harten, W, Winters-Stone, K M, Velthuis, M J, Taaffe, D R, van Mechelen, W, Kersten, M J, Nollet, F, Wenzel, J, Wiskemann, J, Verdonck-de Leeuw, I M, Brug, J, and Buffart, L M
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- 2019
20. Effects and moderators of exercise on sleep in adults with cancer : Individual patient data and aggregated meta-analyses
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Bernard, P, Savard, J, Steindorf, K, Sweegers, M G, Courneya, K S, Newton, R U, Aaronson, N K, Jacobsen, P B, May, A M, Galvao, D A, Chinapaw, M J, Stuiver, M M, Griffith, K A, Mesters, I, Knoop, H, Goedendorp, M M, Bohus, M, Thorsen, L, Schmidt, M E, Ulrich, C M, Sonke, G S, van Harten, W, Winters-Stone, K M, Velthuis, M J, Taaffe, D R, van Mechelen, W, Kersten, M J, Nollet, F, Wenzel, J, Wiskemann, J, Verdonck-de Leeuw, I M, Brug, J, Buffart, L M, Bernard, P, Savard, J, Steindorf, K, Sweegers, M G, Courneya, K S, Newton, R U, Aaronson, N K, Jacobsen, P B, May, A M, Galvao, D A, Chinapaw, M J, Stuiver, M M, Griffith, K A, Mesters, I, Knoop, H, Goedendorp, M M, Bohus, M, Thorsen, L, Schmidt, M E, Ulrich, C M, Sonke, G S, van Harten, W, Winters-Stone, K M, Velthuis, M J, Taaffe, D R, van Mechelen, W, Kersten, M J, Nollet, F, Wenzel, J, Wiskemann, J, Verdonck-de Leeuw, I M, Brug, J, and Buffart, L M
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- 2019
21. Multicentre retrospective study to assess diagnostic accuracy of ultrasound for superficial endometriosisAre we any closer?
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Chowdary, P, Stone, K, Ma, T, Readman, E, McIlwaine, K, Druitt, M, Ellett, L, Cameron, M, Maher, P, Chowdary, P, Stone, K, Ma, T, Readman, E, McIlwaine, K, Druitt, M, Ellett, L, Cameron, M, and Maher, P
- Abstract
BACKGROUND: To establish whether the ultrasound findings of minimal endometriosis are confirmed at laparoscopy and that a correlation can be established as to the anatomical sites in this mild form of the disease. AIMS: Patients with pain and suspicion of endometriosis had an ultrasound scan by a sonologist with expertise in endometriosis as part of their pre-operative workup. MEASUREMENTS AND MAIN RESULTS: The clinical histories of 53 patients who had laparoscopy to investigate pelvic pain were reviewed. Ultrasounds were performed between 2012 and 2015 by a single sonologist with expertise in endometriosis assessments. The ultrasound findings were divided into subgroups as follows - presence of uterosacral ligament thickness, thickened pericolic fat, ovarian mobility and focal tenderness. These were compared with operative findings of those patients with superficial endometriosis. Evidence Level 3 - observational studies with controls and health services research that includes adjustment for likely confounding factors. RESULTS: Seventy-nine percent (42/53) of the patients had laparoscopic findings consistent with their ultrasound findings (95% CI 68-90%, P < 0.0001). Of the subgroups that we reviewed, uterosacral thickening (P < 0.05) and thickened pericolic fat (P < 0.05) were the most associated with superficial endometriosis at the time of laparoscopy. CONCLUSION: Markers on ultrasound that reliably demonstrated inflammation (thickened uterosacral ligaments and thickened pericolic fat) were shown to be significantly associated with the disease.
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- 2019
22. Effects and moderators of exercise on sleep in adults with cancer : Individual patient data and aggregated meta-analyses
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Bernard, P, Savard, J, Steindorf, K, Sweegers, M G, Courneya, K S, Newton, R U, Aaronson, N K, Jacobsen, P B, May, A M, Galvao, D A, Chinapaw, M J, Stuiver, M M, Griffith, K A, Mesters, I, Knoop, H, Goedendorp, M M, Bohus, M, Thorsen, L, Schmidt, M E, Ulrich, C M, Sonke, G S, van Harten, W, Winters-Stone, K M, Velthuis, M J, Taaffe, D R, van Mechelen, W, Kersten, M J, Nollet, F, Wenzel, J, Wiskemann, J, Verdonck-de Leeuw, I M, Brug, J, Buffart, L M, Bernard, P, Savard, J, Steindorf, K, Sweegers, M G, Courneya, K S, Newton, R U, Aaronson, N K, Jacobsen, P B, May, A M, Galvao, D A, Chinapaw, M J, Stuiver, M M, Griffith, K A, Mesters, I, Knoop, H, Goedendorp, M M, Bohus, M, Thorsen, L, Schmidt, M E, Ulrich, C M, Sonke, G S, van Harten, W, Winters-Stone, K M, Velthuis, M J, Taaffe, D R, van Mechelen, W, Kersten, M J, Nollet, F, Wenzel, J, Wiskemann, J, Verdonck-de Leeuw, I M, Brug, J, and Buffart, L M
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- 2019
23. Effects and moderators of exercise on sleep in adults with cancer: Individual patient data and aggregated meta-analyses
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Bernard, P. A., Savard, J., Steindorf, K., Sweegers, M. G., Courneya, K. S., Newton, R. U., Aaronson, N. K., Jacobsen, P. B., May, A. M., Galvao, D. A., Chinapaw, M. J., Stuiver, M. M., Griffith, K. A., Mesters, I, Knoop, H., Goedendorp, M. M., Bohus, M., Thorsen, L., Schmidt, M. E., Ulrich, C. M., Sonke, G. S., van Harten, W., Winters-Stone, K. M., Velthuis, M. J., Taaffe, D. R., van Mechelen, W., Kersten, M. J., Nollet, F., Wenzel, J., Wiskemann, J., Verdonck-de Leeuw, I. M., Brug, J., Buffart, L. M., Bernard, P. A., Savard, J., Steindorf, K., Sweegers, M. G., Courneya, K. S., Newton, R. U., Aaronson, N. K., Jacobsen, P. B., May, A. M., Galvao, D. A., Chinapaw, M. J., Stuiver, M. M., Griffith, K. A., Mesters, I, Knoop, H., Goedendorp, M. M., Bohus, M., Thorsen, L., Schmidt, M. E., Ulrich, C. M., Sonke, G. S., van Harten, W., Winters-Stone, K. M., Velthuis, M. J., Taaffe, D. R., van Mechelen, W., Kersten, M. J., Nollet, F., Wenzel, J., Wiskemann, J., Verdonck-de Leeuw, I. M., Brug, J., and Buffart, L. M.
- Abstract
Objectives: To evaluate the effects of exercise interventions on sleep disturbances and sleep quality in patients with mixed cancer diagnoses, and identify demographic, clinical, and intervention-related moderators of these effects. Methods: Individual patient data (IPD) and aggregated meta-analyses of randomized controlled trials (RCTs). Using data from the Predicting OptimaL cAncer RehabIlitation and Supportive care project, IPD of 2173 adults (mean age = 54.8) with cancer from 17 RCTs were analyzed. A complementary systematic search was conducted (until November 2018) to study the overall effects and test the representativeness of analyzed IPD. Effect sizes of exercise effects on self-reported sleep outcomes were calculated for all included RCTs. Linear mixed-effect models were used to evaluate the effects of exercise on post-intervention outcome values, adjusting for baseline values. Moderator effects were studied by testing interactions for demographic, clinical and intervention-related characteristics. Results: For all 27 eligible RCTs from the updated search, exercise interventions significantly decreased sleep disturbances in adults with cancer (g = −0.09, 95% CI [−0.16; −0.02]). No significant effect was obtained for sleep quality. RCTs included in IPD analyses constituted a representative sample of the published literature. The intervention effects on sleep disturbances were not significantly moderated by any demographic, clinical, or intervention-related factor, nor by sleep disturbances. Conclusions: This meta-analysis provides some evidence that, compared to control conditions, exercise interventions may improve sleep disturbances, but not sleep quality, in cancer patients, although this effect is of a small magnitude. Among the investigated variables, none was found to significantly moderate the effect of exercise interventions on sleep disturbances.
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- 2019
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24. Effects and moderators of exercise on sleep in adults with cancer: Individual patient data and aggregated meta-analyses
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JC onderzoeksprogramma Kanker, Cancer, Epidemiology & Health Economics, Epi Kanker Team 1, Bernard, P, Savard, J, Steindorf, K, Sweegers, M G, Courneya, K S, Newton, R U, Aaronson, N K, Jacobsen, P B, May, A M, Galvao, D A, Chinapaw, M J, Stuiver, M M, Griffith, K A, Mesters, I, Knoop, H, Goedendorp, M M, Bohus, M, Thorsen, L, Schmidt, M E, Ulrich, C M, Sonke, G S, van Harten, W, Winters-Stone, K M, Velthuis, M J, Taaffe, D R, van Mechelen, W, Kersten, M J, Nollet, F, Wenzel, J, Wiskemann, J, Verdonck-de Leeuw, I M, Brug, J, Buffart, L M, JC onderzoeksprogramma Kanker, Cancer, Epidemiology & Health Economics, Epi Kanker Team 1, Bernard, P, Savard, J, Steindorf, K, Sweegers, M G, Courneya, K S, Newton, R U, Aaronson, N K, Jacobsen, P B, May, A M, Galvao, D A, Chinapaw, M J, Stuiver, M M, Griffith, K A, Mesters, I, Knoop, H, Goedendorp, M M, Bohus, M, Thorsen, L, Schmidt, M E, Ulrich, C M, Sonke, G S, van Harten, W, Winters-Stone, K M, Velthuis, M J, Taaffe, D R, van Mechelen, W, Kersten, M J, Nollet, F, Wenzel, J, Wiskemann, J, Verdonck-de Leeuw, I M, Brug, J, and Buffart, L M
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- 2019
25. Borging vitale infrastructuur bij overstroming : Deltafact
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Linden, L. van der, Franssen, R., Stone, K., Bruijn, K. de, Hounjet, M.W.A., Burzel, A., Linden, L. van der, Franssen, R., Stone, K., Bruijn, K. de, Hounjet, M.W.A., and Burzel, A.
- Abstract
Vitale Infrastructuur zijn producten, diensten en de onderliggende processen die, als zij uitvallen, maatschappelijke ontwrichting kunnen veroorzaken. De vitale infrastructuren kunnen robuust gemaakt worden voor overstromingen door deze objecten te borgen via locatiekeuze en inrichting.
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- 2019
26. Processing of rare earth phosphate concentrates: A comparative study of pre-leaching with perchloric, hydrochloric, nitric and phosphoric acids and deportment of minor/major elements
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Stone, K., Bandara, A.M.T.S., Senanayake, G., Jayasekera, S., Stone, K., Bandara, A.M.T.S., Senanayake, G., and Jayasekera, S.
- Abstract
Phosphate rocks such as fluorapatite often contain significant amounts of rare earth minerals and considered as rare earth ores. They can be processed to produce phosphoric acid as well as rare earth metals. The mineralization, however, is commonly associated with other rare earth minerals such as monazite ((Ce,La,Th,Nd,Y)PO4), florencite ((La,Ce)Al3(PO4)2(OH)6), xenotime (YPO4) and cheralite ((Ca,Ce)(Th,Ce)(PO4)2). The treatment of fluorapatite for rare earth extraction commonly requires a pre-leach stage with a mineral acid. Calcium, sodium, magnesium, aluminium, potassium, iron, manganese and a range of other metals including uranium and thorium may enter the solution depending upon the oxide/phosphate/silicate mineralogy. Further processing may involve partial neutralisation to precipitate any rare earth metals which may have solubilised during pre-leach, acid bake of the residue or precipitate with sulphuric acid, water leach followed by purification and precipitation. This paper describes results from a comparative study conducted on pre-leaching a phosphate rare earth concentrate using perchloric, hydrochloric, nitric and phosphoric acids under various leach conditions including different acid concentrations, temperatures and solid/liquid ratios. Through equilibrium constants and kinetic data including measured leachability of relevant metal ions, the study suggests an alternative process route which involves a selective phosphoric acid pre-leach causing low deportment of rare earth elements, uranium and thorium leading to a potentially more efficient downstream process.
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- 2016
27. Processing of rare earth phosphate concentrates: A comparative study of pre-leaching with perchloric, hydrochloric, nitric and phosphoric acids and deportment of minor/major elements
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Stone, K., Bandara, A.M.T.S., Senanayake, G., Jayasekera, S., Stone, K., Bandara, A.M.T.S., Senanayake, G., and Jayasekera, S.
- Abstract
Phosphate rocks such as fluorapatite often contain significant amounts of rare earth minerals and considered as rare earth ores. They can be processed to produce phosphoric acid as well as rare earth metals. The mineralization, however, is commonly associated with other rare earth minerals such as monazite ((Ce,La,Th,Nd,Y)PO4), florencite ((La,Ce)Al3(PO4)2(OH)6), xenotime (YPO4) and cheralite ((Ca,Ce)(Th,Ce)(PO4)2). The treatment of fluorapatite for rare earth extraction commonly requires a pre-leach stage with a mineral acid. Calcium, sodium, magnesium, aluminium, potassium, iron, manganese and a range of other metals including uranium and thorium may enter the solution depending upon the oxide/phosphate/silicate mineralogy. Further processing may involve partial neutralisation to precipitate any rare earth metals which may have solubilised during pre-leach, acid bake of the residue or precipitate with sulphuric acid, water leach followed by purification and precipitation. This paper describes results from a comparative study conducted on pre-leaching a phosphate rare earth concentrate using perchloric, hydrochloric, nitric and phosphoric acids under various leach conditions including different acid concentrations, temperatures and solid/liquid ratios. Through equilibrium constants and kinetic data including measured leachability of relevant metal ions, the study suggests an alternative process route which involves a selective phosphoric acid pre-leach causing low deportment of rare earth elements, uranium and thorium leading to a potentially more efficient downstream process.
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- 2016
28. Peripersonal space boundaries around the lower limbs
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Stone, K D, Kandula, M, Keizer, A, Dijkerman, H C, Stone, K D, Kandula, M, Keizer, A, and Dijkerman, H C
- Abstract
Neurophysiological investigations in non-human primates have shown that bi- and tri-modal fronto-parietal neurons exist that respond to touch on the body and visual (and/or auditory) stimuli near the body. The receptive fields of these neurons extend into space around the body, producing a zone wherein multisensory information is readily integrated. This space around the body, known as peripersonal space (PPS), has also been investigated behaviourally in humans. Some studies have focused on how far into depth the spatial boundaries of PPS extend. Most of these investigations have focused on the upper body (e.g., hands, face, trunk), while little is known about the size of PPS for the lower body (i.e. legs and feet). Thus, the aim of the current study was to delineate a PPS boundary around the lower limbs in healthy participants using a multisensory interaction task. Participants made speeded responses to the presence of vibrations applied to the toes while a task-irrelevant visual stimulus approached towards (Experiment 1) or receded from (Experiment 2) the feet. Participants responded significantly faster to tactile stimuli when the visual stimulus was within approximately 73 cm from the feet, but only when it approached (and not receded from) the legs. This is the first study, to our knowledge, to outline the size of PPS for the lower limbs. These findings could provide insight into the mechanisms underlying multisensory integration in the lower limbs, and add to the current body of knowledge on PPS representations.
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- 2018
29. Peripersonal space boundaries around the lower limbs
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Leerstoel Dijkerman, Helmholtz Institute, Experimental Psychology (onderzoeksprogramma PF), Afd Psychologische functieleer, Stone, K D, Kandula, M, Keizer, A, Dijkerman, H C, Leerstoel Dijkerman, Helmholtz Institute, Experimental Psychology (onderzoeksprogramma PF), Afd Psychologische functieleer, Stone, K D, Kandula, M, Keizer, A, and Dijkerman, H C
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- 2018
30. Tropospheric ozone in CCMI models and Gaussian process emulation to understand biases in the SOCOLv3 chemistry-climate model
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Revell, LE, Stenke, A, Tummon, F, Feinberg, A, Rozanov, E, Peter, T, Abraham, NL, Akiyoshi, H, Archibald, AT, Butchart, N, Deushi, M, Joeckel, P, Kinnison, D, Michou, M, Morgenstern, O, O'Connor, FM, Oman, LD, Pitari, G, Plummer, DA, Schofield, R, Stone, K, Tilmes, S, Visioni, D, Yamashita, Y, Zeng, G, Revell, LE, Stenke, A, Tummon, F, Feinberg, A, Rozanov, E, Peter, T, Abraham, NL, Akiyoshi, H, Archibald, AT, Butchart, N, Deushi, M, Joeckel, P, Kinnison, D, Michou, M, Morgenstern, O, O'Connor, FM, Oman, LD, Pitari, G, Plummer, DA, Schofield, R, Stone, K, Tilmes, S, Visioni, D, Yamashita, Y, and Zeng, G
- Abstract
Previous multi-model intercomparisons have shown that chemistry-climate models exhibit significant biases in tropospheric ozone compared with observations. We investigate annual-mean tropospheric column ozone in 15 models participating in the SPARC-IGAC (Stratosphere-troposphere Processes And their Role in Climate-International Global Atmospheric Chemistry) Chemistry-Climate Model Initiative (CCMI). These models exhibit a positive bias, on average, of up to 40 %-50 % in the Northern Hemisphere compared with observations derived from the Ozone Monitoring Instrument and Microwave Limb Sounder (OMI/MLS), and a negative bias of up to ∼ 30 % in the Southern Hemisphere. SOCOLv3.0 (version 3 of the Solar-Climate Ozone Links CCM), which participated in CCMI, simulates global-mean tropospheric ozone columns of 40.2 DU- A pproximately 33 % larger than the CCMI multi-model mean. Here we introduce an updated version of SOCOLv3.0, SOCOLv3.1, which includes an improved treatment of ozone sink processes, and results in a reduction in the tropospheric column ozone bias of up to 8 DU, mostly due to the inclusion of N2O5 hydrolysis on tropospheric aerosols. As a result of these developments, tropospheric column ozone amounts simulated by SOCOLv3.1 are comparable with several other CCMI models. We apply Gaussian process emulation and sensitivity analysis to understand the remaining ozone bias in SOCOLv3.1. This shows that ozone precursors (nitrogen oxides (NOx), carbon monoxide, methane and other volatile organic compounds, VOCs) are responsible for more than 90 % of the variance in tropospheric ozone. However, it may not be the emissions inventories themselves that result in the bias, but how the emissions are handled in SOCOLv3.1, and we discuss this in the wider context of the other CCMI models. Given that the emissions data set to be used for phase 6 of the Coupled Model Intercomparison Project includes approximately 20 % more NOx than the data set used for CCMI, further work is u
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- 2018
31. Lessons from California's 2012-2016 drought
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Lund, J, Lund, J, Medellin-Azuara, J, Durand, J, Stone, K, Lund, J, Lund, J, Medellin-Azuara, J, Durand, J, and Stone, K
- Abstract
California's 5-year drought has ended, even as its aftermath lingers. From 2012-2016 much or all of California was under severe drought conditions, with greatly diminished precipitation, snowpack, and streamflow and higher temperatures. Water shortages to forests, aquatic ecosystems, hydroelectric power plants, rural drinking water supplies, agriculture, and cities caused billions of dollars in economic losses, killed millions of forest trees, brought several fish species closer to extinction, and caused inconvenience and some expense to millions of households and businesses. The drought also brought innovations and improvements in water management, some of which will better prepare California for future droughts. This paper summarizes the magnitude and impacts of the 2012-2016 California drought. The paper then reviews innovations arising from the drought in the larger historical context of water management in California. Lessons for California and for modern drought management are then discussed. Droughts in modern, well-managed water systems serving globalized economies need not be economically catastrophic, but will always have impacts and challenges, particularly for native ecosystems. In California and every other water system, droughts usefully expose weaknesses and inadequate preparation in water management. In this regard for California, managers of ecosystems and small rural water supplies had the most to learn.
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- 2018
32. Peripersonal space boundaries around the lower limbs
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Leerstoel Dijkerman, Helmholtz Institute, Experimental Psychology (onderzoeksprogramma PF), Afd Psychologische functieleer, Stone, K D, Kandula, M, Keizer, A, Dijkerman, H C, Leerstoel Dijkerman, Helmholtz Institute, Experimental Psychology (onderzoeksprogramma PF), Afd Psychologische functieleer, Stone, K D, Kandula, M, Keizer, A, and Dijkerman, H C
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- 2018
33. Peripersonal space boundaries around the lower limbs
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Leerstoel Dijkerman, Helmholtz Institute, Experimental Psychology (onderzoeksprogramma PF), Afd Psychologische functieleer, Stone, K D, Kandula, M, Keizer, A, Dijkerman, H C, Leerstoel Dijkerman, Helmholtz Institute, Experimental Psychology (onderzoeksprogramma PF), Afd Psychologische functieleer, Stone, K D, Kandula, M, Keizer, A, and Dijkerman, H C
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- 2018
34. Stratospheric Injection of Brominated Very Short-Lived Substances: Aircraft Observations in the Western Pacific and Representation in Global Models
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National Science Foundation (US), National Aeronautics and Space Administration (US), National Center for Atmospheric Research (US), British Atmospheric Data Centre, Australian Research Council, Australian Antarctic Division, German Climate Computing Center, Federal Ministry of Education and Research (Germany), Wales, P. A., Salawitch, R. J., Nicely, J. M., Anderson, D. C., Canty, T. P., Baidar, S., Dix, B., Koenig, T.K., Volkamer, R., Chen, D., Huey, L.G., Tanner, D. J., Cuevas, Carlos A., Fernández, Rafael P., Kinnison, Douglas E., Lamarque, Jean-François, Saiz-Lopez, A., Atlas, Elliot L., Hall, S.R., Navarro, M. A., Pan, L.L., Schauffler, S. M., Stell, M., Tilmes, S., Ullmann, K., Weinheimer, A. J., Akiyoshi, Hideharu, Chipperfield, M.P., Deushi, Makoto, Dhomse, S. S., Feng, W., Graf, P., Hossaini, R., Jöckel, P., Mancini, E., Michou, M., Morgenstern, O., Oman, L. D., Pitari, G., Plummer, David A., Revell, L. E., Rozanov, E., Saint-Martin, D., Schofield, R., Stenke, A., Stone, K. A., Visioni, D., Yamashita, Y., Zeng, G., National Science Foundation (US), National Aeronautics and Space Administration (US), National Center for Atmospheric Research (US), British Atmospheric Data Centre, Australian Research Council, Australian Antarctic Division, German Climate Computing Center, Federal Ministry of Education and Research (Germany), Wales, P. A., Salawitch, R. J., Nicely, J. M., Anderson, D. C., Canty, T. P., Baidar, S., Dix, B., Koenig, T.K., Volkamer, R., Chen, D., Huey, L.G., Tanner, D. J., Cuevas, Carlos A., Fernández, Rafael P., Kinnison, Douglas E., Lamarque, Jean-François, Saiz-Lopez, A., Atlas, Elliot L., Hall, S.R., Navarro, M. A., Pan, L.L., Schauffler, S. M., Stell, M., Tilmes, S., Ullmann, K., Weinheimer, A. J., Akiyoshi, Hideharu, Chipperfield, M.P., Deushi, Makoto, Dhomse, S. S., Feng, W., Graf, P., Hossaini, R., Jöckel, P., Mancini, E., Michou, M., Morgenstern, O., Oman, L. D., Pitari, G., Plummer, David A., Revell, L. E., Rozanov, E., Saint-Martin, D., Schofield, R., Stenke, A., Stone, K. A., Visioni, D., Yamashita, Y., and Zeng, G.
- Abstract
We quantify the stratospheric injection of brominated very short-lived substances (VSLS) based on aircraft observations acquired in winter 2014 above the Tropical Western Pacific during the CONvective TRansport of Active Species in the Tropics (CONTRAST) and the Airborne Tropical TRopopause EXperiment (ATTREX) campaigns. The overall contribution of VSLS to stratospheric bromine was determined to be 5.0 ± 2.1 ppt, in agreement with the 5 ± 3 ppt estimate provided in the 2014 World Meteorological Organization (WMO) Ozone Assessment report (WMO 2014), but with lower uncertainty. Measurements of organic bromine compounds, including VSLS, were analyzed using CFC-11 as a reference stratospheric tracer. From this analysis, 2.9 ± 0.6 ppt of bromine enters the stratosphere via organic source gas injection of VSLS. This value is two times the mean bromine content of VSLS measured at the tropical tropopause, for regions outside of the Tropical Western Pacific, summarized in WMO 2014. A photochemical box model, constrained to CONTRAST observations, was used to estimate inorganic bromine from measurements of BrO collected by two instruments. The analysis indicates that 2.1 ± 2.1 ppt of bromine enters the stratosphere via inorganic product gas injection. We also examine the representation of brominated VSLS within 14 global models that participated in the Chemistry-Climate Model Initiative. The representation of stratospheric bromine in these models generally lies within the range of our empirical estimate. Models that include explicit representations of VSLS compare better with bromine observations in the lower stratosphere than models that utilize longer-lived chemicals as a surrogate for VSLS.
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- 2018
35. Left-right confusion: the influence of verbal labeling and strategy on left-right discrimination.
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Heijden, X. van der, Dijkerman, C (Thesis Advisor), van Stralen, E, Stone, K, Heijden, X. van der, Dijkerman, C (Thesis Advisor), van Stralen, E, and Stone, K
- Abstract
For navigation and orientation in daily life, knowing the difference between left and right is essential. Nevertheless, left-right confusion is a common phenomenon for healthy individuals. In previous studies, it is suggested that the problem lies within the labels assigned to spatial directions. This study examines verbal labeling as a cause of left-right confusion. Furthermore, a second question was added to this study, concerning strategy use and left-right confusion. One often reported strategy is holding the index finger and thumb in an angle of 90 degrees, forming an “L” shape on the left hand. The influence of this L-shape strategy on left-right confusion is investigated. An adapted version of the Bergen Left Right Discrimination test was used where in one part the participants were forced to use verbal labeling and in another part verbal labeling was prevented. The expectation was that less left-right confusion occurs in the non-verbal labeling conditions in comparison to the verbal labeling conditions. No significant differences were found, showing that no verbal labeling effect can be found in this study. For the strategy question, four conditions were created to examine whether the L-shape group was slower on a left-right decision task compared to people with other strategies when they are not able to form an L-shape with their hands (holding the palm of their hands upwards). No significant differences were found for this group, showing that hand position is not of more influence on individuals with an L-shape strategy. However, when looking at the total group, all participants were slower while holding the palm of their hands upwards, showing that hand position is of influence on left-right decisions.
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- 2017
36. Left-right confusion: the influence of verbal labeling and strategy on left-right discrimination.
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Heijden, X. van der, Dijkerman, C (Thesis Advisor), van Stralen, E, Stone, K, Heijden, X. van der, Dijkerman, C (Thesis Advisor), van Stralen, E, and Stone, K
- Abstract
For navigation and orientation in daily life, knowing the difference between left and right is essential. Nevertheless, left-right confusion is a common phenomenon for healthy individuals. In previous studies, it is suggested that the problem lies within the labels assigned to spatial directions. This study examines verbal labeling as a cause of left-right confusion. Furthermore, a second question was added to this study, concerning strategy use and left-right confusion. One often reported strategy is holding the index finger and thumb in an angle of 90 degrees, forming an “L” shape on the left hand. The influence of this L-shape strategy on left-right confusion is investigated. An adapted version of the Bergen Left Right Discrimination test was used where in one part the participants were forced to use verbal labeling and in another part verbal labeling was prevented. The expectation was that less left-right confusion occurs in the non-verbal labeling conditions in comparison to the verbal labeling conditions. No significant differences were found, showing that no verbal labeling effect can be found in this study. For the strategy question, four conditions were created to examine whether the L-shape group was slower on a left-right decision task compared to people with other strategies when they are not able to form an L-shape with their hands (holding the palm of their hands upwards). No significant differences were found for this group, showing that hand position is not of more influence on individuals with an L-shape strategy. However, when looking at the total group, all participants were slower while holding the palm of their hands upwards, showing that hand position is of influence on left-right decisions.
- Published
- 2017
37. Review of the global models used within phase 1 of the Chemistry-Climate Model Initiative (CCMI)
- Author
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Morgenstern, O, Hegglin, MI, Rozanov, E, O'Connor, FM, Abraham, NL, Akiyoshi, H, Archibald, AT, Bekki, S, Butchart, N, Chipperfield, MP, Deushi, M, Dhomse, SS, Garcia, RR, Hardiman, SC, Horowitz, LW, Joeckel, P, Josse, B, Kinnison, D, Lin, M, Mancini, E, Manyin, ME, Marchand, M, Marecal, V, Michou, M, Oman, LD, Pitari, G, Plummer, DA, Revell, LE, Saint-Martin, D, Schofield, R, Stenke, A, Stone, K, Sudo, K, Tanaka, TY, Tilmes, S, Yamashita, Y, Yoshida, K, Zeng, G, Morgenstern, O, Hegglin, MI, Rozanov, E, O'Connor, FM, Abraham, NL, Akiyoshi, H, Archibald, AT, Bekki, S, Butchart, N, Chipperfield, MP, Deushi, M, Dhomse, SS, Garcia, RR, Hardiman, SC, Horowitz, LW, Joeckel, P, Josse, B, Kinnison, D, Lin, M, Mancini, E, Manyin, ME, Marchand, M, Marecal, V, Michou, M, Oman, LD, Pitari, G, Plummer, DA, Revell, LE, Saint-Martin, D, Schofield, R, Stenke, A, Stone, K, Sudo, K, Tanaka, TY, Tilmes, S, Yamashita, Y, Yoshida, K, and Zeng, G
- Abstract
We present an overview of state-of-the-art chemistry–climate and chemistry transport models that are used within phase 1 of the Chemistry–Climate Model Initiative (CCMI-1). The CCMI aims to conduct a detailed evaluation of participating models using process-oriented diagnostics derived from observations in order to gain confidence in the models' projections of the stratospheric ozone layer, tropospheric composition, air quality, where applicable global climate change, and the interactions between them. Interpretation of these diagnostics requires detailed knowledge of the radiative, chemical, dynamical, and physical processes incorporated in the models. Also an understanding of the degree to which CCMI-1 recommendations for simulations have been followed is necessary to understand model responses to anthropogenic and natural forcing and also to explain inter-model differences. This becomes even more important given the ongoing development and the ever-growing complexity of these models. This paper also provides an overview of the available CCMI-1 simulations with the aim of informing CCMI data users.
- Published
- 2017
38. Left-right confusion: the influence of verbal labeling and strategy on left-right discrimination.
- Author
-
Heijden, X. van der, Dijkerman, C (Thesis Advisor), van Stralen, E, Stone, K, Heijden, X. van der, Dijkerman, C (Thesis Advisor), van Stralen, E, and Stone, K
- Abstract
For navigation and orientation in daily life, knowing the difference between left and right is essential. Nevertheless, left-right confusion is a common phenomenon for healthy individuals. In previous studies, it is suggested that the problem lies within the labels assigned to spatial directions. This study examines verbal labeling as a cause of left-right confusion. Furthermore, a second question was added to this study, concerning strategy use and left-right confusion. One often reported strategy is holding the index finger and thumb in an angle of 90 degrees, forming an “L” shape on the left hand. The influence of this L-shape strategy on left-right confusion is investigated. An adapted version of the Bergen Left Right Discrimination test was used where in one part the participants were forced to use verbal labeling and in another part verbal labeling was prevented. The expectation was that less left-right confusion occurs in the non-verbal labeling conditions in comparison to the verbal labeling conditions. No significant differences were found, showing that no verbal labeling effect can be found in this study. For the strategy question, four conditions were created to examine whether the L-shape group was slower on a left-right decision task compared to people with other strategies when they are not able to form an L-shape with their hands (holding the palm of their hands upwards). No significant differences were found for this group, showing that hand position is not of more influence on individuals with an L-shape strategy. However, when looking at the total group, all participants were slower while holding the palm of their hands upwards, showing that hand position is of influence on left-right decisions.
- Published
- 2017
39. Designing interactive newsprint
- Author
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Frohlich, D., Ely, Philip, Moore, H., Golsteijn, C., Egglestone, P., Mills, J., Rogers, J., Metcalf, T., Stone, K., Menicou, M., Frohlich, D., Ely, Philip, Moore, H., Golsteijn, C., Egglestone, P., Mills, J., Rogers, J., Metcalf, T., Stone, K., and Menicou, M.
- Abstract
The possibility of linking paper to digital information is enhanced by recent developments in printed electronics. In this article we report the design and evaluation of a local newspaper augmented with capacitive touch regions and an embedded Bluetooth chip working with an adjunct device. These allowed the interactive playback of associated audio and the registration of manual voting actions on the web. Design conventions inherited from paper and the web were explored by showing four different versions of an interactive newspaper to 16 community residents. The diverse responses of residents are described, outlining the potential of the approach for local journalism and recommendations for the design of interactive newsprint
- Published
- 2017
40. Latent activity rhythm disturbance sub-groups and longitudinal change in depression symptoms among older men
- Author
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Smagula, SF, Smagula, SF, Boudreau, RM, Stone, K, Reynolds, CF, Bromberger, JT, Ancoli-Israel, S, Dam, TT, Barrett-Connor, E, Cauley, JA, Smagula, SF, Smagula, SF, Boudreau, RM, Stone, K, Reynolds, CF, Bromberger, JT, Ancoli-Israel, S, Dam, TT, Barrett-Connor, E, and Cauley, JA
- Abstract
Activity rhythm disturbances and depression often co-occur among older adults. However, little is known about how activity rhythm disturbances themselves co-occur, or how disturbances to multiple aspects of the activity rhythm relate to depression over time. In this study, we performed a Latent Class Analysis to derive sub-groups of older men [total n = 2933, mean age = 76.28, standard deviation (SD) = 5.48] who shared similar patterns of activity rhythm disturbances (defined as extreme values of modeled activity rhythm parameters). We found eight sub-groups with distinct combinations of activity rhythm disturbances: one had all normative activity rhythm parameters (32.09%), one had only lower activity (10.06%), three had earlier activity (totaling 26.96%) and three had later activity (totaling 30.89%). Groups with similar timing were distinguished depending on whether the relative length of the active period was shorter and/or if the activity rhythm had lesser amplitude/robustness. We next examined whether the derived activity rhythm sub-groups were associated with different rates of change in depression symptom levels over an average of 5.5 (0.52 SD) follow-up years. The sub-group with lower activity only had faster increases in depressive symptoms over time (compared with the group with normative rhythm parameters), but this association was accounted for by adjustments for concurrently assessed health status covariates. Independent of these covariates, we found that four activity rhythm disturbance sub-groups experienced faster depressive symptom increases (compared with the normative sub-group): These included all three sub-groups that had later activity timing and one sub-group that had earlier activity timing plus a shorter active period and a dampened rhythm. Low activity rhythm height/robustness with normal timing therefore may mark depression risk that is attributable to co-occurring disease processes; in contrast, having late or combined early/compressed/d
- Published
- 2015
41. A new Dobson Umkehr ozone profile retrieval method optimising information content and resolution
- Author
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Stone, K, Tully, MB, Rhodes, SK, Schofield, R, Stone, K, Tully, MB, Rhodes, SK, and Schofield, R
- Abstract
The standard Dobson Umkehr methodology to retrieve coarse-resolution ozone profiles used by the National Oceanographic and Atmospheric Administration uses designated solar zenith angles (SZAs). However, some information may be lost if measurements lie outside the designated SZA range (between 60° and 90°), or do not conform to the fitting technique. Also, while Umkehr measurements can be taken using multiple wavelength pairs (A, C and D), past retrieval methods have focused on a single pair (C). Here we present an Umkehr inversion method that uses measurements at all SZAs (termed operational) and all wavelength pairs. (Although, we caution direct comparison to other algorithms.) Information content for a Melbourne, Australia (38° S, 145° E) Umkehr measurement case study from 28 January 1994, with SZA range similar to that designated in previous algorithms is shown. When comparing the typical single wavelength pair with designated SZAs to the operational measurements, the total degrees of freedom (independent pieces of information) increases from 3.1 to 3.4, with the majority of the information gain originating from Umkehr layers 2 + 3 and 4 (10-20 km and 25-30 km respectively). In addition to this, using all available wavelength pairs increases the total degrees of freedom to 5.2, with the most significant increases in Umkehr layers 2 + 3 to 7 and 9+ (10-40 and 45-80 km). Investigating a case from 13 April 1970 where the measurements extend beyond the 90° SZA range gives further information gain, with total degrees of freedom extending to 6.5. Similar increases are seen in the information content. Comparing the retrieved Melbourne Umkehr time series with ozonesondes shows excellent agreement in layers 2 + 3 and 4 (10-20 and 25-30 km) for both C and A + C + D-pairs. Retrievals in layers 5 and 6 (25-30 and 30-35 km) consistently show lower ozone partial column compared to ozonesondes. This is likely due to stray light effects that are not accounted for in the forward
- Published
- 2015
42. Latent activity rhythm disturbance sub-groups and longitudinal change in depression symptoms among older men
- Author
-
Smagula, SF, Smagula, SF, Boudreau, RM, Stone, K, Reynolds, CF, Bromberger, JT, Ancoli-Israel, S, Dam, TT, Barrett-Connor, E, Cauley, JA, Smagula, SF, Smagula, SF, Boudreau, RM, Stone, K, Reynolds, CF, Bromberger, JT, Ancoli-Israel, S, Dam, TT, Barrett-Connor, E, and Cauley, JA
- Abstract
Activity rhythm disturbances and depression often co-occur among older adults. However, little is known about how activity rhythm disturbances themselves co-occur, or how disturbances to multiple aspects of the activity rhythm relate to depression over time. In this study, we performed a Latent Class Analysis to derive sub-groups of older men [total n = 2933, mean age = 76.28, standard deviation (SD) = 5.48] who shared similar patterns of activity rhythm disturbances (defined as extreme values of modeled activity rhythm parameters). We found eight sub-groups with distinct combinations of activity rhythm disturbances: one had all normative activity rhythm parameters (32.09%), one had only lower activity (10.06%), three had earlier activity (totaling 26.96%) and three had later activity (totaling 30.89%). Groups with similar timing were distinguished depending on whether the relative length of the active period was shorter and/or if the activity rhythm had lesser amplitude/robustness. We next examined whether the derived activity rhythm sub-groups were associated with different rates of change in depression symptom levels over an average of 5.5 (0.52 SD) follow-up years. The sub-group with lower activity only had faster increases in depressive symptoms over time (compared with the group with normative rhythm parameters), but this association was accounted for by adjustments for concurrently assessed health status covariates. Independent of these covariates, we found that four activity rhythm disturbance sub-groups experienced faster depressive symptom increases (compared with the normative sub-group): These included all three sub-groups that had later activity timing and one sub-group that had earlier activity timing plus a shorter active period and a dampened rhythm. Low activity rhythm height/robustness with normal timing therefore may mark depression risk that is attributable to co-occurring disease processes; in contrast, having late or combined early/compressed/d
- Published
- 2015
43. Exploring the global in student assessment and feedback for sustainable tourism education
- Author
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Moscardo, G, Benckendorff, P, Wearing, Tarrant, M, Schweinsberg, SC, Lyons, K, Stone, K, Moscardo, G, Benckendorff, P, Wearing, Tarrant, M, Schweinsberg, SC, Lyons, K, and Stone, K
- Published
- 2015
44. Exploring the global in student assessment and feedback for sustainable tourism education
- Author
-
Moscardo, G, Benckendorff, P, Wearing, Tarrant, M, Schweinsberg, SC, Lyons, K, Stone, K, Moscardo, G, Benckendorff, P, Wearing, Tarrant, M, Schweinsberg, SC, Lyons, K, and Stone, K
- Published
- 2015
45. Validity of questionnaire survey in evaluating residence’s characteristics and dampness in contemporary human dwellings in Tianjin, China
- Author
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Marasinghe, Samali Ayoma, Sun, Yuexia, Hou, Jing, Wang, Pan, Zhang, Qingnan, Norbäck, Dan, Marasinghe, Samali Ayoma, Sun, Yuexia, Hou, Jing, Wang, Pan, Zhang, Qingnan, and Norbäck, Dan
- Abstract
Many researchers used questionnaires to evaluate associations between indoor environment and human health. However, research on validated occupant’s reported information using home inspections is still lacking. This study aims to validate the data regarding building characteristics and dampness signs obtained from a questionnaire survey in Tianjin, China. Kappa values were used to test the evaluation agreement between occupants and inspectors. A perfect to moderate concordances were reported between the occupants’ and the inspectors’ reports for building characteristics of the child’s room. The floor covering material was reported in almost perfect agreement (cement and stone: k = 0.860). There were substantial to moderate agreements for wall covering (wallpaper: k = 0.731; painting and latex paint: k = 0.408). Slight to moderate agreements were reported for dampness indicators in the child’s bedroom, and consistency was higher in homes with sick children. The findings of this study suggest that questionnaire surveys can give valid and reliable data regarding technical parameters of the home, but not mostly for visible signs of dampness in the home environment. To increase the validity of future questionnaires for studying dampness problems, clear digital photos, moisture-sensitive devices, or more details information should be used.
- Published
- 2023
- Full Text
- View/download PDF
46. Sleep Arousal-Related Ventricular Repolarization Lability Is Associated With Cardiovascular Mortality in Older Community-Dwelling Men
- Author
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Shahrbabaki, Sobhan Salari, Linz, Dominik, Redline, Susan, Stone, Katie, Ensrud, Kristine, Baumert, Mathias, Shahrbabaki, Sobhan Salari, Linz, Dominik, Redline, Susan, Stone, Katie, Ensrud, Kristine, and Baumert, Mathias
- Abstract
Background: Sleep is fragmented by brief arousals, and excessive arousal burden has been linked to increased cardiovascular (CV) risk, but mechanisms are poorly understood. Research Question: Do arousals trigger cardiac ventricular repolarization lability that may predispose people to long-term cardiovascular mortality? Study Design and Methods: This study analyzed 407,541 arousals in the overnight polysomnograms of 2,558 older men in the Osteoporotic Fractures in Men sleep study. QT and RR intervals were measured beat-to-beat starting 15 s prior to arousal onset until 15 s past onset. Ventricular repolarization lability was quantified by using the QT variability index (QTVi). Results: During 10.1 ± 2.5 years of follow-up, 1,000 men died of any cause, including 348 CV deaths. During arousals, QT and RR variability increased on average by 5 and 55 ms, respectively, resulting in a paradoxical transient decrease in QTVi from 0.07 ± 1.68 to –1.00 ± 1.68. Multivariable Cox proportional hazards analysis adjusted for age, BMI, cardiovascular and respiratory risk factors, sleep-disordered breathing and arousal, diabetes, and Parkinson disease indicated that excessive QTVi during arousal was independently associated with all-cause and CV mortality (all-cause hazard ratio, 1.20 [95% CI, 1.04-1.38; P = .012]; CV hazard ratio, 1.29 [95% CI, 1.01 -1.65; P = .043]). Interpretation: Arousals affect ventricular repolarization. A disproportionate increase in QT variability during arousal is associated with an increased all-cause and CV mortality and may reflect ventricular repolarization maladaptation to the arousal stimulus. Whether arousal-related QTVi can be used for more tailored risk stratification warrants further study, including evaluating whether arousal suppression attenuates ventricular repolarization lability and reduces subsequent mortality. Clinical Trial Registration: ClinicalTrials.gov; No.: NCT00070681; URL: www.clinicaltrials.gov
- Published
- 2023
47. Effects and moderators of exercise medicine on cardiometabolic outcomes in men with prostate cancer previously or currently undergoing androgen deprivation therapy: An individual patient data meta-analysis.
- Author
-
Lopez, P. and Lopez, P.
- Subjects
- All institutes and research themes of the Radboud University Medical Center., Radboudumc 14: Tumours of the digestive tract Physiology.
- Published
- 2023
48. Moderators of resistance-based exercise programs' effect on sarcopenia-related measures in men with prostate cancer previously or currently undergoing androgen deprivation therapy: An individual patient data meta-analysis.
- Author
-
Lopez, P. and Lopez, P.
- Subjects
- All institutes and research themes of the Radboud University Medical Center., Radboudumc 14: Tumours of the digestive tract Physiology.
- Published
- 2023
49. Age estimation from sleep studies using deep learning predicts life expectancy
- Author
-
Brink-Kjaer, Andreas, Leary, Eileen B., Sun, Haoqi, Westover, M. Brandon, Stone, Katie L., Peppard, Paul E., Lane, Nancy E., Cawthon, Peggy M., Redline, Susan, Jennum, Poul, Sorensen, Helge B.D., Mignot, Emmanuel, Brink-Kjaer, Andreas, Leary, Eileen B., Sun, Haoqi, Westover, M. Brandon, Stone, Katie L., Peppard, Paul E., Lane, Nancy E., Cawthon, Peggy M., Redline, Susan, Jennum, Poul, Sorensen, Helge B.D., and Mignot, Emmanuel
- Abstract
Sleep disturbances increase with age and are predictors of mortality. Here, we present deep neural networks that estimate age and mortality risk through polysomnograms (PSGs). Aging was modeled using 2500 PSGs and tested in 10,699 PSGs from men and women in seven different cohorts aged between 20 and 90. Ages were estimated with a mean absolute error of 5.8 ± 1.6 years, while basic sleep scoring measures had an error of 14.9 ± 6.29 years. After controlling for demographics, sleep, and health covariates, each 10-year increment in age estimate error (AEE) was associated with increased all-cause mortality rate of 29% (95% confidence interval: 20–39%). An increase from −10 to +10 years in AEE translates to an estimated decreased life expectancy of 8.7 years (95% confidence interval: 6.1–11.4 years). Greater AEE was mostly reflected in increased sleep fragmentation, suggesting this is an important biomarker of future health independent of sleep apnea.
- Published
- 2022
50. Age estimation from sleep studies using deep learning predicts life expectancy
- Author
-
Brink-Kjaer, Andreas, Leary, Eileen B., Sun, Haoqi, Westover, M. Brandon, Stone, Katie L., Peppard, Paul E., Lane, Nancy E., Cawthon, Peggy M., Redline, Susan, Jennum, Poul, Sorensen, Helge B.D., Mignot, Emmanuel, Brink-Kjaer, Andreas, Leary, Eileen B., Sun, Haoqi, Westover, M. Brandon, Stone, Katie L., Peppard, Paul E., Lane, Nancy E., Cawthon, Peggy M., Redline, Susan, Jennum, Poul, Sorensen, Helge B.D., and Mignot, Emmanuel
- Abstract
Sleep disturbances increase with age and are predictors of mortality. Here, we present deep neural networks that estimate age and mortality risk through polysomnograms (PSGs). Aging was modeled using 2500 PSGs and tested in 10,699 PSGs from men and women in seven different cohorts aged between 20 and 90. Ages were estimated with a mean absolute error of 5.8 ± 1.6 years, while basic sleep scoring measures had an error of 14.9 ± 6.29 years. After controlling for demographics, sleep, and health covariates, each 10-year increment in age estimate error (AEE) was associated with increased all-cause mortality rate of 29% (95% confidence interval: 20–39%). An increase from −10 to +10 years in AEE translates to an estimated decreased life expectancy of 8.7 years (95% confidence interval: 6.1–11.4 years). Greater AEE was mostly reflected in increased sleep fragmentation, suggesting this is an important biomarker of future health independent of sleep apnea.
- Published
- 2022
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