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Background: Observational studies have consistently found a link between low serum 25‐hydroxyvitamin D concentration and higher risk of cognitive impairment. Results from randomized controlled trials have been mixed, and few have been conducted in the general population. Methods: We recruited 21,315 community‐dwelling Australians aged between 60 and 84 years to participate in the D‐Health Trial, a randomized, double‐blind, placebo‐controlled trial. The intervention was monthly oral doses of 60,000 international units of vitamin D or placebo for 5 years. We assessed cognitive function in a randomly sampled group of participants aged ≥70 years using the Telephone Interview for Cognitive Status (TICS) at 2 and 5 years after randomization. The primary outcome for this analysis was TICS score; the secondary outcome was the proportion of people who had cognitive impairment (defined as TICS score ≤25). We analyzed data using mixed models (linear and logistic). Results: We interviewed 3887 participants at year 2 and 3614 participants at year 5. The mean TICS score at these time points was 32.3 and 32.2, respectively. Vitamin D supplementation did not affect cognitive function as measured by TICS score (mean difference between vitamin D and placebo groups 0.04; 95% CI −0.14 to 0.23), or alter risk of cognitive impairment (odds ratio 1.00; 95% CI 0.75 to 1.33). Conclusions: Monthly bolus doses of vitamin D supplementation neither enhanced nor hindered cognitive function among older adults. Population‐wide vitamin D supplementation of older adults that are largely vitamin D replete is unlikely to substantially benefit cognition. [ABSTRACT FROM AUTHOR]

Background: Retirement villages (RVs), also known as continuing care retirement communities, are an increasingly popular housing choice for older adults. The RV population has significant health needs, possibly representing a group with needs in between community‐dwelling older adults and those in long‐term residential care (LTC). Our previous work shows Gerontology Nurse Specialist (GNS)‐facilitated multidisciplinary team (MDT) interventions may reduce hospitalizations from LTC. This study tested whether a similar intervention reduced hospitalizations in RV residents. Methods: Open‐label randomized controlled trial in which 412 older residents of 33 RVs were randomized (1:1) to an MDT intervention or usual care. Setting: RVs across two District Health Boards in Auckland, New Zealand. Residents were eligible if considered high risk of health/functional decline (triggering ≥3 interRAI Clinical Assessment Protocols or needing special consideration identified by GNS). Intervention: GNS‐facilitated MDT intervention, including geriatrician/nurse practitioner and clinical pharmacist, versus usual care. Primary outcome was time from randomization to first acute hospitalization. Secondary outcomes were rate of acute hospitalizations, LTC admission, and mortality. Twelve residents died before randomization; all others (n = 400: MDT intervention = 199; usual care = 201) were included in intention‐to‐treat analyses. Results: Mean (SD) age was 82.2 (6.9) years, 302 (75.5%) were women, and 378 (94.5%) were European. Over median 1.5 years follow‐up, no difference was found in hazard of acute hospitalization between the MDT intervention (51.8%) and usual care (49.3%) groups (Hazard ratio [HR] = 1.01, 95% CI = 0.77–1.34). No difference was found in the incidence rate of acute hospitalizations between the MDT intervention (0.69 per person‐year) and usual care (0.86 per person‐year) groups (incidence rate ratio = 0.81, 95% CI = 0.59–1.10). Similar results were seen for the proportion of residents with LTC transition (HR = 1.18, 95% CI = 0.65–2.11) and mortality (HR = 0.70, 95% CI = 0.36–1.35). Conclusion: Further studies are needed to assess the effects of other patient‐centered interventions and outcomes with adequate primary care integration. [ABSTRACT FROM AUTHOR]

Objectives: To examine speed‐of‐processing training (SOPT) in older adults in senior living communities, especially those in assisted living. Design: Two‐arm, parallel, randomized controlled trial. Setting: Assisted and independent residence settings in 31 senior living communities. Participants: Individuals aged 55 to 102 (mean 81.0, 73.8% female, 76.4% living alone, 47.0% residing in assisted living; N=351). Intervention: The intervention was 10 hours of computerized SOPT at baseline with 4‐hour boosters at 5 and 11 months; the attention control was 10 hours of solving computerized crossword puzzles at baseline with 4‐hour boosters at 5 and 11 months. Measures: Outcomes were useful field of view (UFOV) scores and improvements of 0.5 standard deviations (SDs) or more (> 158.4 ms). Data collection occurred at baseline, after training, and 6 and 12 months. Random‐effects linear mixed‐effect models were used to estimate SOPT effects in intention‐to‐treat complete‐case and multiple imputation analyses. Results: We found statistically significantly small standardized effect sizes (Cohen's ds 0.25–0.40) for SOPT, reflecting processing speed improvements on UFOV scores (of 39–63 ms) and greater percentages (9.8 to 14.9 percentage point advantages) for achieving more than 0.5 SD improvements (> 158.4 ms) over the 3 time periods. Conclusion: These findings support public health messaging about the potential benefits of SOPT for older adults in senior living communities and support the feasibility and acceptability of SOPT in assisted and independent living for older adults. [ABSTRACT FROM AUTHOR]

Objectives To assess the effects of bimagrumab on skeletal muscle mass and function in older adults with sarcopenia and mobility limitations. Design A 24-week, randomized, double-blind, placebo-controlled, parallel-arm, proof-of-concept study. Setting Five centers in the United States. Participants Community-dwelling adults (N = 40) aged 65 and older with gait speed between 0.4 and 1.0 m/s over 4 m and an appendicular skeletal muscle index of 7.25 kg/m2 or less for men and 5.67 kg/m2 or less for women. Intervention Intravenous bimagrumab 30 mg/kg (n = 19) or placebo (n = 21). Measurements Change from baseline in thigh muscle volume (TMV), subcutaneous and intermuscular fat, appendicular and total lean body mass, grip strength, gait speed, and 6-minute walk distance (6MWD). Results Thirty-two (80%) participants completed the study. TMV increased by Week 2, was sustained throughout the treatment period, and remained above baseline at the end of study in bimagrumab-treated participants, whereas there was no change with placebo treatment (Week 2: 5.15 ± 2.19% vs −0.34 ± 2.59%, P < .001; Week 4: 6.12 ± 2.56% vs 0.16 ± 3.42%, P < .001; Week 8: 8.01 ± 3.70% vs 0.35 ± 3.32%, P < .001; Week 16: 7.72 ± 5.31% vs 0.42 ± 5.14%, P < .001; Week 24: 4.80 ± 5.81% vs −1.01 ± 4.43%, P = .002). Participants with slower walking speed at baseline receiving bimagrumab had clinically meaningful and statistically significantly greater improvements in gait speed (mean 0.15 m/s, P = .009) and 6MWD (mean 82 m, P = .022) than those receiving placebo at Week 16. Adverse events in the bimagrumab group included muscle-related symptoms, acne, and diarrhea, most of which were mild in severity and resolved by the end of study. Conclusion Treatment with bimagrumab over 16 weeks increased muscle mass and strength in older adults with sarcopenia and improved mobility in those with slow walking speed. [ABSTRACT FROM AUTHOR]

Objectives To explore and compare sociodemographic, clinical, and neuropsychiatric determinants of dropout and nonadherence in older people participating in an open-label cluster-randomized controlled trial-the Prevention of Dementia by Intensive Vascular care (pre DIVA) trial-over 6 years. Design Secondary analysis. Setting One hundred sixteen general practices in the Netherlands. Participants Community-dwelling individuals aged 70 to 78 (N = 2,994). Intervention Nurse-led multidomain intervention targeting cardiovascular risk factors to prevent dementia. Measurements The associations between participant baseline sociodemographic (age, sex, education), clinical (medical history, disability, cardiovascular risk), neuropsychiatric (depressive symptoms (Geriatric Depression Scale-15), and cognitive (Mini-Mental State Examination)) characteristics and dropout from the trial and nonadherence to the trial intervention were explored using multilevel logistic regression models. Results Older age, poorer cognitive function, more symptoms of depression, and greater disability were the most important determinants of dropout of older people. The presence of cardiovascular risk factors was not associated with dropout but was associated with nonadherence. Being overweight was a risk factor for nonadherence, whereas people with high blood pressure or a low level of physical exercise adhered better to the intervention. The association between poorer cognitive function and symptoms of depression and dropout was stronger in the control group than in the intervention group, and vice versa for increased disability. Conclusion In a large dementia prevention trial with 6-year follow-up, dropout was associated with older age, poorer cognitive function, symptoms of depression, and disability at baseline. These findings can help to guide the design of future dementia prevention trials in older adults. The associations found between cardiovascular risk factors and nonadherence need to be confirmed in other older populations receiving cardiovascular prevention interventions. [ABSTRACT FROM AUTHOR]

Objectives To test a new cognitive behavioral therapy for insomnia ( CBT-I) program designed for use by nonclinicians. Design Randomized controlled trial. Setting Department of Veterans Affairs healthcare system. Participants Community-dwelling veterans aged 60 and older who met diagnostic criteria for insomnia of 3 months duration or longer (N = 159). Intervention Nonclinician 'sleep coaches' delivered a five-session manual-based CBT-I program including stimulus control, sleep restriction, sleep hygiene, and cognitive therapy (individually or in small groups), with weekly telephone behavioral sleep medicine supervision. Controls received five sessions of general sleep education. Measurements Primary outcomes, including self-reported (7-day sleep diary) sleep onset latency ( SOL-D), wake after sleep onset ( WASO-D), total wake time ( TWT-D), and sleep efficiency ( SE-D); Pittsburgh Sleep Quality Index ( PSQI); and objective sleep efficiency (7-day wrist actigraphy, SE-A) were measured at baseline, at the posttreatment assessment, and at 6- and 12-month follow-up. Additional measures included the Insomnia Severity Index ( ISI), depressive symptoms (Patient Health Questionnaire-9 ( PHQ-9)), and quality of life (Medical Outcomes Study 12-item Short-form Survey version 2 ( SF-12v2)). Results Intervention subjects had greater improvement than controls between the baseline and posttreatment assessments, the baseline and 6-month assessments, and the baseline and 12-month assessments in SOL-D (−23.4, −15.8, and −17.3 minutes, respectively), TWT-D (−68.4, −37.0, and −30.9 minutes, respectively), SE-D (10.5%, 6.7%, and 5.4%, respectively), PSQI (−3.4, −2.4, and −2.1 in total score, respectively), and ISI (−4.5, −3.9, and −2.8 in total score, respectively) (all P < .05). There were no significant differences in SE-A, PHQ-9, or SF-12v2. Conclusion Manual-based CBT-I delivered by nonclinician sleep coaches improves sleep in older adults with chronic insomnia. [ABSTRACT FROM AUTHOR]

Objectives To determine the effectiveness of a proactive primary care program on the daily functioning of older people in primary care. Design Single-blind, three-arm, cluster-randomized controlled trial with 1-year follow-up. Setting Primary care setting, 39 general practices in the Netherlands. Participants Community-dwelling people aged 60 and older (N = 3,092). Interventions A frailty screening intervention using routine electronic medical record data to identify older people at risk of adverse events followed by usual care from a general practitioner; after the screening intervention, a nurse-led care program consisting of a comprehensive geriatric assessment, evidence-based care planning, care coordination, and follow-up; usual care. Measurements Primary outcome was daily functioning measured using the Katz-15 (6 activities of daily living ( ADLs), 8 instrumental activities of daily living ( IADLs), one mobility item (range 0-15)); higher scores indicate greater dependence. Secondary outcomes included quality of life, primary care consultations, hospital admissions, emergency department visits, nursing home admissions, and mortality. Results The participants in both intervention arms had less decline in daily functioning than those in the usual care arm at 12 months (mean Katz-15 score: screening arm, 1.87, 95% confidence interval ( CI) = 1.77-1.97; screening and nurse-led care arm, 1.88, 95% CI = 1.80-1.96; control group, 2.03, 95% CI = 1.92-2.13; P = .03). No differences in quality of life were observed. Conclusion Participants in both intervention groups had less decline than those in the control group at 1-year follow-up. Despite the statistically significant effect, the clinical relevance is uncertain at this point because of the small differences. Greater customizing of the intervention combined with prolonged follow-up may lead to more-robust results. [ABSTRACT FROM AUTHOR]

Objectives To examine whether a regular, long-term exercise program performed by individuals with Alzheimer's disease ( AD) at home or as group-based exercise at an adult daycare center has beneficial effects on cognition; to examine secondary outcomes of a trial that has been published earlier. Design Randomized, controlled trial. Setting Community. Participants Community-dwelling dyads (N = 210) of individuals with AD and their spousal caregivers randomized into three groups. Intervention Two types of intervention comprising customized home-based exercise ( HE) and group-based exercise ( GE), each twice a week for 1 year, were compared with a control group ( CG) receiving usual community care. Measurements Cognitive function was measured using the Clock Drawing Test ( CDT), Verbal Fluency ( VF), Clinical Dementia Rating ( CDR), and Mini-Mental State Examination ( MMSE) at baseline and 3, 6, and 12 months of follow-up. Results Executive function, measured using CDT, improved in the HE group, and changes in the score were significantly better than those of the CG at 12 months (adjusted for age, sex, and CDR, P = .03). All groups deteriorated in VF and MMSE score during the intervention, and no significant differences between the groups were detected at 12-month follow-up when analyses were adjusted for age, sex, and CDR. Conclusion Regular, long-term, customized HE improved the executive function of community-dwelling older people with memory disorders, but the effects were mild and were not observed in other domains of cognition. [ABSTRACT FROM AUTHOR]

Objectives To investigate whether a 12-week physical and cognitive exercise program can improve cognitive function and brain activation efficiency in community-dwelling older adults. Design Randomized controlled trial. Setting Kyoto, Japan. Participants Community-dwelling older adults (N = 48) were randomized into an exercise group (n = 24) and a control group (n = 24). Intervention Exercise group participants received a weekly dual task-based multimodal exercise class in combination with pedometer-based daily walking exercise during the 12-week intervention phase. Control group participants did not receive any intervention and were instructed to spend their time as usual during the intervention phase. Measurements The outcome measures were global cognitive function, memory function, executive function, and brain activation (measured using functional magnetic resonance imaging) associated with visual short-term memory. Results Exercise group participants had significantly greater postintervention improvement in memory and executive functions than the control group ( P < .05). In addition, after the intervention, less activation was found in several brain regions associated with visual short-term memory, including the prefrontal cortex, in the exercise group ( P < .001, uncorrected). Conclusion A 12-week physical and cognitive exercise program can improve the efficiency of brain activation during cognitive tasks in older adults, which is associated with improvements in memory and executive function. [ABSTRACT FROM AUTHOR]

Objectives To investigate the effects of multimodal supervised exercise on physical functioning, falls, and related injuries in older women. Design Two-year randomized controlled trial. Setting Tampere, Finland. Participants Women aged 70 to 80 who had fallen in the previous year (n = 409). Intervention Participants were randomly assigned to an exercise or control group ( NCT00986466). Exercisers participated in group exercise classes twice a week for 12 months and once a week for the subsequent 12 months and home exercises. Controls maintained their current physical activity. Measurements Physical functioning assessed at baseline and at 6-month intervals during the intervention. Falls and related injuries monitored with fall diaries. Results Intention-to-treat analyses showed that exercise led to significant improvements in physical functioning. Leg strength differed significantly between the groups (mean change: 14.1%, 95% confidence interval (CI) = 8.0 to 20.2 in exercisers; 1.6%, 95% CI = −4.5 to 7.7 in controls; P < .001). Chair stand time also differed significantly between groups (7.4%, 95% CI 3.8 to 10.8% in exercisers; 2.4%, 95% CI = −1.6 to 6.2) in controls; P = .02). Between-group differences were significant for fast walking speed ( P = .003) and probability of completing the backward walking test ( P < .001), favoring exercisers. Timed Up-and-Go and grip strength did not differ between groups. There was no difference in the total falls incidence rate ratio (IRR = 1.0, 95% CI = 0.79 to 1.26), but exercisers were less likely to have medically attended injurious falls (IRR = 0.45, 95% CI = 0.27 to 0.78; P = .004). Conclusion Twenty-four months of multimodal exercise enhanced physical functioning in women aged 70 to 80 with a history of falls. Although the total number of falls was not lower than in controls, the rate of medically attended injurious falls was more than 50% lower. [ABSTRACT FROM AUTHOR]

Objectives To determine the effects of tai chi training on functional performance and walking with and without the addition of the performance of a cognitive task, in older adults living in supportive housing facilities. Design Secondary data analysis comparing a single-blind, randomized controlled trial of tai chi training with an attention-matched educational control intervention with crossover to tai chi. Setting Two supportive housing facilities. Participants Sixty-six men and women living in supportive housing facilities entered the study, and 57 aged 87 ± 7 completed all study procedures. Intervention Interventions consisted of two 1-hour-long instructor-led group sessions per week for 12 weeks. Tai chi training consisted of movements based upon the Yang-style short form. Educational sessions consisted of lectures and discussions of age-related health topics. Measurements Subjects were tested for physical function (Short Physical Performance Battery, SPPB), balance (Berg Balance Scale, BBS), mobility (timed up-and-go, TUG), and walking speed under normal and cognitive dual-task conditions. Results The tai chi group exhibited greater improvement in SPPB scores (baseline 8.1 ± 2.9, follow-up 9.0 ± 2.6) than controls (baseline 8.2 ± 2.6, follow-up 8.2 ± 2.6) ( P = .005). Tai chi also increased normal and dual-task walking speed ( P < .001) yet did not affect BBS ( P = .02) or TUG ( P = .02) after accounting for multiple comparisons. The dual-task cost (percentage change) to walking speed was unaffected. After the crossover tai chi intervention, the control group improved performance in the SPPB, BBS, and TUG, and increased walking speed under normal and dual-task conditions ( P = .008). Conclusion Tai chi training may be a safe and effective therapy to help improve physical function and dual-task walking in very old adults living in supportive housing facilities. [ABSTRACT FROM AUTHOR]

Objectives To assess the effect of an electronic health record-based transitional care intervention involving automated alerts to primary care providers and staff when older adults were discharged from the hospital. Design Randomized controlled trial. Setting Large multispecialty group practice. Participants Individuals aged 65 and older discharged from hospital to home. Intervention In addition to notifying primary care providers about the individual's recent discharge, the system provided information about new drugs added during the inpatient stay, warnings about drug-drug interactions, recommendations for dose changes and laboratory monitoring of high-risk medications, and alerts to the primary care provider's support staff to schedule a posthospitalization office visit. Measurements An outpatient office visit with a primary care provider after discharge and rehospitalization within 30 days after discharge. Results Of the 1,870 discharges in the intervention group, 27.7% had an office visit with a primary care provider within 7 days of discharge. Of the 1,791 discharges in the control group, 28.3% had an office visit with a primary care provider within 7 days of discharge. In the intervention group, 18.8% experienced a rehospitalization within the 30-day period after discharge, compared with 19.9% in the control group. The hazard ratio for an office visit with a primary care physician did not significantly differ between the intervention and control groups. The hazard ratio for rehospitalization in the 30-day period after hospital discharge in the intervention versus the control group was 0.94 (95% confidence interval = 0.81-1.1). Conclusion This electronic health record-based intervention did not have a significant effect on the timeliness of office visits to primary care providers after hospitalization or risk of rehospitalization. [ABSTRACT FROM AUTHOR]

Objectives To determine the efficacy of multimodal, nondrug therapy on symptoms of dementia and need for care in institutionalized individuals with degenerative dementia. Design Randomized, controlled, longitudinal trial. Data were analyzed using multiple linear regression. Setting Five German nursing homes. Participants One hundred thirty-nine nursing home residents with primary degenerative dementia ( Mini- Mental State Examination score < 24). Intervention The 6-month intervention comprised three components: motor stimulation, activities of daily living, and cognitive stimulation ( MAKS). Groups of 10 patients led by two therapists participated in the standardized intervention for 2 hours, 6 days a week. The intervention was described in detail in an intervention manual. Adherence to the manual was high. Controls received treatment as usual. Measurements Overall geriatric symptoms were recorded using the Nurses' Observation Scale for Geriatric Patients, functional independence using the Barthel Index, and care time using the Resource Utilization in Dementia- Formal Care. Results Of 646 individuals screened, 146 were eligible, and 130 were included in the intention-to-treat analysis. At 6 months, results of the per-protocol analysis (n = 119) showed improvement in overall dementia symptoms in the MAKS group and no change in the control group (adjusted mean difference ( AMD) = −6.8, 95% confidence interval ( CI) = −10.3 to −3.3; P < .001, Cohen d = 0.66). This effect was greatest on the social behavior ( AMD = −1.9, 95% CI = −2.9 to −0.8; P < .001; Cohen d = 0.54) and instrumental activity of daily living ( IADL) ( AMD = −1.4, 95% CI = −2.5 to −0.30; P = .01; Cohen d = 0.43) subscales. No effect was seen on functional independence or total care time. Conclusion This 6-month nondrug multimodal intervention improved dementia symptoms in nursing home residents, especially in social behavior and IADL capabilities. Registration Identifier: ISRCTN87391496. [ABSTRACT FROM AUTHOR]