128 results on '"Vincent, Grace E."'
Search Results
102. Fighting fire and fatigue: sleep quantity and quality during multi-day wildfire suppression.
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Vincent, Grace E., Aisbett, Brad, Hall, Sarah J., and Ferguson, Sally A.
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ACTIGRAPHY ,FATIGUE (Physiology) ,FIRE fighters ,SHIFT systems ,SLEEP ,DATA analysis software ,DIARY (Literary form) - Abstract
This study examined firefighters’ sleep quantity and quality throughout multi-day wildfire suppression, and assessed the impact of sleep location, shift length, shift start time and incident severity on these variables. For 4 weeks, 40 volunteer firefighters’ sleep was assessed using wrist actigraphy. Analyses revealed that the quantity of sleep obtained on fire days was restricted, and pre- and post-sleep fatigue ratings were higher, compared to non-fire days. On fire days, total sleep time was less when: (i) sleep location was in a tent or vehicle, (ii) shifts were greater than 14 h and (iii) shifts started between 05:00 and 06:00 h. This is the first empirical investigation providing objective evidence that firefighters’ sleep is restricted during wildfire suppression. Furthermore, sleep location, shift length and shift start time should be targeted when designing appropriate controls to manage fatigue-related risk and preserve firefighters’ health and safety during wildfire events. Practitioner Summary:During multi-day wildfire suppression, firefighters’ sleep quantity was restricted, and pre- and post-sleep fatigue ratings were higher, compared to non-fire days. Furthermore, total sleep time was less when: (i) sleep occurred in a tent/vehicle, (ii) shifts were >14 h and (iii) shifts started between 05:00 and 06:00 h. [ABSTRACT FROM PUBLISHER]
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- 2016
- Full Text
- View/download PDF
103. Understanding the Differing Impacts of On-Call Work for Males and Females: Results from an Online Survey.
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Roberts, Bernadette, Vincent, Grace E., Ferguson, Sally A., Reynolds, Amy C., and Jay, Sarah M.
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- 2019
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104. Sleep/Wake Behaviours in Elite Athletes from Three Different Football Codes.
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Miller, Dean J., Sargent, Charli, Vincent, Grace E., Roach, Gregory D., Halson, Shona L., and Lastella, Michele
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SOCCER , *STATISTICS , *TIME , *ONE-way analysis of variance , *PHYSICAL training & conditioning , *ACTIGRAPHY , *RUGBY football , *SLEEP , *DIARY (Literary form) , *COMPARATIVE studies , *RESEARCH funding , *DATA analysis , *PROBABILITY theory - Abstract
The article focuses on the sleep/wake behaviors of Australian Rules football, rugby union, and soccer players. Topics discussed include factors that influence the physiological demand placed on players, sleep-related dependent variables that were extracted from the activity monitors and sleep diary data, and the sleep disturbances experienced by Australian Rules football players compared to rugby union players and soccer players.
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- 2017
105. Are Individuals with Low Trait Anxiety Better Suited to On-Call Work?
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Sarah M. Jay, Xuan Zhou, Andrew Vakulin, Grace E. Vincent, Sally A. Ferguson, Madeline Sprajcer, Leon Lack, Sprajcer, Madeline, Jay, Sarah M., Vincent, Grace E., Zhou, Xuan, Vakulin, Andrew, Lack, Leon, and Ferguson, Sally A.
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lcsh:Medicine ,Poison control ,Polysomnography ,Article ,Occupational safety and health ,anxiety ,on-call ,qEEG ,stress ,03 medical and health sciences ,0302 clinical medicine ,Injury prevention ,medicine ,030212 general & internal medicine ,General Environmental Science ,medicine.diagnostic_test ,lcsh:R ,Psychomotor vigilance task ,Human factors and ergonomics ,General Earth and Planetary Sciences ,Anxiety ,medicine.symptom ,Psychology ,030217 neurology & neurosurgery ,State-Trait Anxiety Inventory ,Clinical psychology - Abstract
Research has indicated that individuals with certain traits may be better suited to shiftwork and non-standard working arrangements. However, no research has investigated how individual differences impact on-call outcomes. As such, this study investigated the impact of trait anxiety on sleep and performance outcomes on-call. Seventy male participants (20–35 years) completed an adaptation night, a control night, and two on-call nights in a laboratory. Trait anxiety was determined using the State Trait Anxiety Inventory (STAI) X-2, and participants completed the STAI X-1 prior to bed each night to assess state anxiety. Sleep was measured using polysomnography and quantitative electroencephalographic analysis. Performance was assessed using a 10-min psychomotor vigilance task (PVT) performed each day at 0930, 1200, 1430 and 1700 h. Data pooled from three separate but inter-related studies was used for these analyses. Results indicated that the effects of trait anxiety on state anxiety, sleep and performance outcomes on-call were generally limited. These findings suggest that on-call outcomes are not negatively affected by higher levels of trait anxiety. Refereed/Peer-reviewed
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- 2020
106. A time to rest, a time to dine: sleep, time-restricted eating, and cardiometabolic health
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Charlotte C. Gupta, Grace E. Vincent, Alison M. Coates, Saman Khalesi, Christopher Irwin, Jillian Dorrian, Sally A. Ferguson, Gupta, Charlotte C, Vincent, Grace E, Coates, Alison M, Khalesi, Saman, Irwin, Christopher, Dorrian, Jillian, and Ferguson, Sally A
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metabolic health ,night shift ,Nutrition and Dietetics ,animal structures ,Nutrition. Foods and food supply ,cardiovascular ,eating habits ,Diet ,meal timing ,chrono-nutrition ,sleep timing ,Cardiovascular Diseases ,circadian disruption ,Humans ,Sleep Deprivation ,TX341-641 ,Sleep ,hormones, hormone substitutes, and hormone antagonists ,Food Science - Abstract
Refereed/Peer-reviewed Cardiovascular disease (CVD) poses a serious health and economic burden worldwide. Modifiable lifestyle factors are a focus of research into reducing the burden of CVD, with diet as one of the most investigated factors. Specifically, the timing and regularity of food intake is an emerging research area, with approaches such as time-restricted eating (TRE) receiving much attention. TRE involves shortening the time available to eat across the day and is associated with improved CVD outcomes compared with longer eating windows. However, studies that have examined TRE have not considered the impact of sleep on CVD outcomes despite recent evidence showing that sleep duration can influence the timing and amount of food eaten. In this article, we argue that as TRE and sleep influence each other, and influence the same cardiometabolic parameters, experiencing inadequate sleep may attenuate any positive impact TRE has on CVD. We examine the relationship between TRE and CVD, with sleep as a potential mediator in this relationship, and propose a research agenda to investigate this relationship. This will provide necessary evidence to inform future interventions aimed at reducing the burden of CVD.
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- 2022
107. Research Combining Physical Activity and Sleep: A Bibliometric Analysis
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Grace E. Vincent, Tim Olds, Corneel Vandelanotte, Mitch J. Duncan, Aamir Raoof Memon, Memon, Aamir R., Vandelanotte, Corneel, Olds, Timothy, Duncan, Mitch J., and Vincent, Grace E.
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research output ,Gerontology ,Bibliometric analysis ,en-ausbibliometrics ,Scopus ,Physical activity ,MEDLINE ,Experimental and Cognitive Psychology ,Bibliometrics ,scientometrics ,03 medical and health sciences ,0302 clinical medicine ,Humans ,030212 general & internal medicine ,sleep ,Exercise ,exercise ,Scientific production ,Scientometrics ,Databases, Bibliographic ,Sleep in non-human animals ,Sensory Systems ,Sleep ,Psychology ,scientific production ,030217 neurology & neurosurgery - Abstract
This study used a bibliometric analysis through the Scopus database to examine papers that combined physical activity and sleep, published between 1979 and 2018. Bibliometric indicators of productivity included publication volume and citation distribution, top 10 authors, average authors per paper, single- and multicountry collaboration, collaborative index, top 10 countries, leading journals, highly cited papers and network visualization for coauthorship, international collaboration, and co-occurrence of author keywords. The initial search identified 1,509 papers, of which 607 passed through comprehensive screening and were included in the final analysis. Most of the papers were research articles (90.8%) and published in English (90.8%). Most papers (81.4%) were published within the past decade, 2009-2018. The mean number of papers published per year was 15.2, the mean number of citations per paper was 257.3, and the mean number of authors per paper was 5.5. International collaboration was evident for 21.6% of the papers, and 95.6% of papers were multiauthored. The most prolific publishing institutions and authors were from the United States, Canada, Australia, Switzerland, and Brazil. Keyword analysis suggested that almost all age groups and study designs were covered, but most papers focus on noncommunicable diseases. Although there has been a rise in scientific production on combined physical activity and sleep research in recent years, future work in this area should include researchers from developing countries. Refereed/Peer-reviewed
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- 2019
108. Sleep disturbances in caregivers of children with medical needs: a systematic review and meta-analysis
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Sally A. Ferguson, Madeline Sprajcer, Jill Dorrian, Sarah M. Jay, Katya Kovac, Grace E. Vincent, Matthew J. W. Thomas, Amy C. Reynolds, Vincent, Grace E, Kovac, Katya, Sprajcer, Madeline, Jay, Sarah M, Reynolds, Amy C, Dorrian, Jill, Thomas, Matthew JW, and Ferguson, Sally A
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Male ,Sleep Wake Disorders ,Gerontology ,Research design ,caregivers ,caring ,media_common.quotation_subject ,MEDLINE ,PsycINFO ,children ,Humans ,Medicine ,sleep ,Child ,Applied Psychology ,media_common ,business.industry ,sleep quality ,Psychiatry and Mental health ,Caregivers ,Meta-analysis ,Female ,Sleep (system call) ,Worry ,Sleep onset ,business - Abstract
OBJECTIVE The sleep of individuals who provide unpaid care for children with medical needs is likely to be significantly impacted by this role. Sleep may be affected by the practical tasks undertaken during the night (e.g., administering medication), in addition to the emotional impact (e.g., worry, rumination). The aim of this systematic review was to examine the available literature on the impact of caregiving for children with medical needs on caregivers' sleep. METHOD Electronic databases, including PubMed, Medline, and Web of Science, were searched using predetermined criteria. Studies were included if they used validated subjective or objective measures of caregiver sleep, in contexts where caregivers were providing care for one or more children with medical needs. Data on study population, research design, and outcome measures were extracted, and study quality was reviewed by two authors. RESULTS Search criteria produced 2,172 studies for screening. Based on inclusion criteria, 40 studies were included in the final review. Sleep of caregivers of children with medical needs was poorer than that for noncaregivers. Poor sleep included reduced sleep duration, impaired sleep efficiency, increased wake after sleep onset, and perceived poorer sleep quality. CONCLUSIONS Providing unpaid care for children with medical needs is associated with sleep disturbances, including less total sleep, and poorer sleep quality. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
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- 2021
109. The impact of breaking up prolonged sitting on glucose metabolism and cognitive function when sleep is restricted
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Sarah M. Jay, Corneel Vandelanotte, Sally A. Ferguson, Charli Sargent, Katya Kovac, Nicola D. Ridgers, Grace E. Vincent, Vincent, Grace E, Jay, Sarah M, Sargent, Charli, Kovac, Katya, Vandelanotte, Corneel, Ridgers, Nicola D, and Ferguson, Sally A
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Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Sleepiness ,physical activity ,sleepiness ,Sitting ,Article ,lcsh:RC321-571 ,03 medical and health sciences ,Behavioral Neuroscience ,0302 clinical medicine ,Physical medicine and rehabilitation ,sedentary behaviour ,medicine ,sitting breaks ,030212 general & internal medicine ,Effects of sleep deprivation on cognitive performance ,Treadmill ,Exercise ,lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry ,lcsh:QH301-705.5 ,Fatigue ,Sleep restriction ,Sitting breaks ,exercise ,Physical activity ,Cognition ,Sedentary behaviour ,030229 sport sciences ,Crossover study ,lcsh:Biology (General) ,Neurology ,Physical therapy ,fatigue ,Neurology (clinical) ,Sleep (system call) ,Analysis of variance ,Psychology - Abstract
Objectives: To investigate the acute benefits of breaking up prolonged sitting with light-intensity physical activity on (i) glucose metabolism under conditions of sleep restriction, and (ii) cognitive deficits associated with sleep restriction. Methods: This counterbalanced, crossover trial consisted of two five-day (5 night) experimental conditions separated by a two-week washout period. On the first night, participants were given a 9-h sleep opportunity to allow the collection of steady-state baseline measures the following day. This was followed by three consecutive nights of sleep restriction (5-h sleep opportunity). In the sitting condition (SIT), participants remained seated between 1000 and 1800 h. In the physical activity condition (ACT), participants completed 3-min bouts of light-intensity walking every 30 min on a motorised treadmill between 1000 and 1800 h. At all other times, in both conditions, participants remained seated, except when walking to the dining room or to use the bathroom (max distance = 32 m). Six physically inactive, healthy males were randomised to one of two trial orders, 1) SIT then ACT, or 2) ACT then SIT. Continuous measures of interstitial glucose were measured at 5-min intervals. A cognitive and subjective test battery was administered every two hours during wake periods. Analyses were conducted using a series of linear mixed-effect ANOVAs. Results: No differences in interstitial glucose concentration or cognitive performance were observed between the SIT condition and the ACT condition. Participants reported higher levels of sleepiness, and felt less alert in the SIT condition compared with the ACT condition. Conclusions: There were no observable benefits of breaking up prolonged sitting on glucose metabolism under conditions of sleep restriction. These findings have implications for behaviour change interventions. Future studies will need to include larger, less homogenous study populations and appropriate control conditions (i.e., 8–9 h sleep opportunities). Keywords: Physical activity, Exercise, Sitting breaks, Sedentary behaviour, Fatigue, Sleepiness
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- 2018
110. Temporal and bidirectional associations between physical activity and sleep in primary school-aged children
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Nicola D. Ridgers, David R. Lubans, Grace E. Vincent, Jo Salmon, Lisa M. Barnett, Anna Timperio, Vincent, Grace E, Barnett, Lisa M, Lubans, David R, Salmon, Jo, Timperio, Anna, and Ridgers, Nicola D
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Male ,medicine.medical_specialty ,Physiology ,Endocrinology, Diabetes and Metabolism ,Physical activity ,physical activity ,Child Behavior ,Body Mass Index ,03 medical and health sciences ,0302 clinical medicine ,Physiology (medical) ,Humans ,Medicine ,SenseWear ,030212 general & internal medicine ,Child ,Exercise ,youth ,Schools ,Nutrition and Dietetics ,School age child ,business.industry ,Body Weight ,Australia ,Outcome measures ,General Medicine ,Sleep time ,Sleep in non-human animals ,Cross-Sectional Studies ,Time in bed ,Energy expenditure ,Linear Models ,Multilevel Analysis ,Physical therapy ,Female ,Sedentary Behavior ,Waist Circumference ,Energy Metabolism ,Sleep ,business ,030217 neurology & neurosurgery - Abstract
Refereed/Peer-reviewed The directionality of the relationship between children's physical activity and sleep is unclear. This study examined the temporal and bidirectional associations between objectively measured physical activity, energy expenditure, and sleep in primary school-aged children. A subgroup of children (n = 65, aged 8-11 years) from the Fitness, Activity and Skills Testing Study conducted in Melbourne, Australia, had their sleep and physical activity assessed using the SenseWear Pro Armband for 8 consecutive days. Outcome measures included time spent in light-intensity physical activiy (LPA), moderate-to vigorousintensity physical activity (MVPA), activity energy expenditure (AEE), time in bed, total sleep time, and sleep efficiency. Multilevel analyses were conducted using generalized linear latent mixed models to determine whether physical activity on 1 day was associated with sleep outcomes that night, and whether sleep during 1 night was associated with physical activity the following day. No significant associations were observed between time in bed, total sleep time, and sleep efficiency with LPA, MVPA, and AEE in either direction. This study found no temporal or bidirectional associations between objectively measured physical activity, AEE, and sleep. Future research is needed to understand other sleep dimensions that may impact on or be influenced by physical activity to provide potential intervention targets to improve these outcomes. usc
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- 2017
111. How many days of monitoring are needed to reliably assess SenseWear Armband outcomes in primary school-aged children?
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Nicola D. Ridgers, Grace E. Vincent, Lisa M. Barnett, Jo Salmon, Jill A. Hnatiuk, Anna Timperio, Ridgers, Nicola D, Hnatiuk, Jill A, Vincent, Grace E, Timperio, Anna, Barnett, Lisa M, and Salmon, Jo
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Male ,medicine.medical_specialty ,Time Factors ,Physical activity ,physical activity ,Physical Therapy, Sports Therapy and Rehabilitation ,Motor Activity ,03 medical and health sciences ,0302 clinical medicine ,energy expenditure ,Humans ,Medicine ,Orthopedics and Sports Medicine ,030212 general & internal medicine ,Child ,Students ,Sedentary time ,youth ,Schools ,School age child ,business.industry ,Australia ,Reproducibility of Results ,030229 sport sciences ,Actigraphy ,Sleep time ,Cross-Sectional Studies ,Time in bed ,Energy expenditure ,Physical therapy ,Female ,measurement ,Energy Metabolism ,business - Abstract
Objectives: To identify the number of hours and days or nights of monitoring required to reliably estimate energy expenditure (EE), steps, waking sedentary time, light- (LPA), moderate- (MPA), vigorous- (VPA), moderate- to vigorous-intensity physical activity (MVPA), time in bed and total sleep time using the SenseWear Armband.Design: Cross-sectional study.Methods: One hundred and two children (50% boys) aged 8-11 years from six schools wore a SenseWear Armband (BodyMedia Inc, USA) for eight consecutive days (seven consecutive nights). Hourly increments of valid day wear time criteria were examined (days/week; 8h/day-14h/day). Intra-class correlation coefficients estimated the reliability for any individual day for each wear time criteria. The Spearman-Brown prophecy formula was used to determine the number of days/nights of monitoring needed to achieve reliability estimates of 0.7, 0.8 and 0.9.Results: Fewer monitoring days were needed as the valid day criteria became more stringent. For example, at least 12 h of wear time on at least 2 days was required to achieve a reliability of 0.7 for EE. In contrast, at least 8 h/day on 5 days resulted in reliable estimates (0.7) for MPA, VPA and MVPA. Between 6 and 7 nights of monitoring were required to reliably estimate children's time in bed and total sleep time, respectively.Conclusions: A 7-day monitoring protocol in primary school-aged children would provide acceptable reliability for the assessment of EE, waking sedentary time, LPA, MPA, VPA, MVPA, time in bed and total sleep time, as assessed by the SenseWear Armband. (C) 2016 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved. usc Refereed/Peer-reviewed
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- 2016
112. Associations between firefighters’ physical activity across multiple shifts of wildfire suppression
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Brad Aisbett, Grace E. Vincent, Nicola D. Ridgers, Sally A. Ferguson, Vincent, Grace E, Ridgers, Nicola D, Ferguson, Sally A, and Aisbett, Brad
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Adult ,Male ,Time Factors ,Poison control ,Physical Therapy, Sports Therapy and Rehabilitation ,Human Factors and Ergonomics ,Fires ,Occupational safety and health ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Work Schedule Tolerance ,Injury prevention ,Humans ,Medicine ,Young adult ,Exercise ,Volunteer ,Simulation ,Aged ,Wildfire suppression ,firefighting ,business.industry ,Actigraphy ,030229 sport sciences ,Middle Aged ,Firefighters ,occupational health ,Female ,Sleep ,business ,030217 neurology & neurosurgery ,actigraphy ,Demography - Abstract
The aim of this study was to examine the associations between firefighters' physical activity levels across consecutive wildfire suppression shifts and to determine whether sleep duration moderated these associations. Forty volunteer firefighters (31 males, 9 females) wore an activity monitor to concurrently measure physical activity and sleep duration. Sedentary time and time spent in light- (LPA), moderate- (MPA), and vigorous-intensity physical activity (VPA) during each shift were determined using monitor-specific cut points. During any given shift, every additional 60min spent in LPA was associated with 7.2min more LPA and 27.6min MPA the following shift. There were no other significant positive or negative associations. No significant moderating effect of total sleep time was observed. Firefighters are able to maintain and/or increase their physical activity intensity between consecutive shifts. Further research is needed to understand firefighters pacing and energy conservation strategies during emergency wildfire deployments.Practitioner Summary: To examine associations between firefighters' physical activity levels across consecutive shifts during a multi-day emergency wildfire and determine whether sleep duration moderated these associations. Firefighters are able to maintain and/or increase their physical activity intensity between consecutive shifts. No significant moderating effect of total sleep time was observed. Refereed/Peer-reviewed
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- 2016
113. The effects of hydration on cognitive performance during a simulated wildfire suppression shift in temperate and hot conditions
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Brianna Larsen, Sally A. Ferguson, Bradley P. Smith, Grace E. Vincent, Michael A. Cvirn, Charli Sargent, Brad Aisbett, Jillian Dorrian, Sarah M. Jay, Greg Roach, Cvirn, Michael A, Dorrian, Jillian, Smith, Bradley P, Vincent, Grace E, Jay, Sarah M, Roach, Greg D, Sargent, Charli, Larsen, Brianna, Aisbett, Brad, and Ferguson, Sally A
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Adult ,Male ,medicine.medical_specialty ,Hot Temperature ,Physical activity ,physical activity ,Poison control ,Physical Therapy, Sports Therapy and Rehabilitation ,Human Factors and Ergonomics ,Audiology ,Wildfires ,03 medical and health sciences ,0302 clinical medicine ,Environmental temperature ,Cognition ,firefighter ,medicine ,Humans ,0501 psychology and cognitive sciences ,Computer Simulation ,Effects of sleep deprivation on cognitive performance ,Safety, Risk, Reliability and Quality ,cognitive performance ,Engineering (miscellaneous) ,050107 human factors ,Work Performance ,Wildfire suppression ,Dehydration ,05 social sciences ,Psychomotor vigilance task ,temperature ,Middle Aged ,030210 environmental & occupational health ,Occupational Diseases ,Firefighters ,Female ,heat ,Psychology ,hydration ,Psychomotor Performance ,Stroop effect - Abstract
The effects on dehydration and cognitive performance from heat and/or physical activity are well established in the laboratory, although have not yet been studied for personnel working in occupations such as wildland firefighting regularly exposed to these types of conditions. This study aimed to investigate the effects of temperature and dehydration on seventy-three volunteer firefighters (35.7 ± 13.7 years, mean ± standard deviation) during a simulation of wildfire suppression under either control or hot (18–20; or 33–35 °C) temperature conditions. Results showed cognitive performance on the psychomotor vigilance task declined when participants were dehydrated in the heat and Stroop task performance was impaired when dehydrated late in the afternoon.Firefighters may be at risk of deteriorations in simple cognitive functions in the heat whilst dehydrated, although may also experience impairments in complex cognitive functions if dehydrated late in the day, irrespective of the environmental temperature. Refereed/Peer-reviewed
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- 2018
114. Does breaking up prolonged sitting when sleep restricted affect postprandial glucose responses and subsequent sleep architecture? - a pilot study
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Grace E. Vincent, Corneel Vandelanotte, Charli Sargent, Sally A. Ferguson, Katya Kovac, Nicola D. Ridgers, Michele Lastella, Sarah M. Jay, Vincent, Grace E, Jay, Sarah M, Sargent, Charli, Kovac, Katya, Lastella, Michele, Vandelanotte, Corneel, Ridgers, Nicola D, Ferguson, Sally A, and 23rd International Symposium on Shiftwork and Working Time - Towards a Global Consensus Yulara, Australia 19–23 June 2017
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Adult ,Blood Glucose ,Male ,medicine.medical_specialty ,Physiology ,Posture ,physical activity ,Walking ,Sitting ,Affect (psychology) ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,Physical medicine and rehabilitation ,Physiology (medical) ,sedentary behaviour ,medicine ,sitting breaks ,Humans ,Prolonged sitting ,Exercise ,Sitting Position ,030229 sport sciences ,Sleep architecture ,Postprandial Period ,Sleep in non-human animals ,Crossover study ,Restricted affect ,Circadian Rhythm ,Postprandial ,Female ,Sleep ,030217 neurology & neurosurgery - Abstract
This pilot study investigated the impact of breaking up prolonged sitting with light-intensity walking on postprandial glucose responses and sleep architecture. In a randomized, counterbalanced, crossover design, six healthy males completed a sitting condition and an active condition (sitting interrupted with light-intensity walking) for three consecutive days, following 5-h sleep opportunities at night. Postprandial glucose response and sleep (time spent in all stages) was assessed. Breaking up prolonged sitting with light-intensity walking did not affect postprandial glucose responses in sleep-restricted participants; however a small increase (similar to 9min) in slow-wave sleep was observed. Refereed/Peer-reviewed
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- 2018
115. Adding sleep restriction to the equation: impact on wildland firefighters' work performance and physiology in hot conditions
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Sally A. Ferguson, Rodney J. Snow, Brad Aisbett, Nicola D. Ridgers, Brianna Larsen, Grace E. Vincent, Vincent, Grace E, Ferguson, Sally, Larsen, Brianna, Ridgers, Nicola D, Snow, Rod, and Aisbett, Brad
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Adult ,Male ,medicine.medical_specialty ,Hot Temperature ,Physical activity ,Firefighting ,physical activity ,Polysomnography ,sleep restriction ,Random Allocation ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Heart Rate ,Task Performance and Analysis ,Heart rate ,Humans ,Medicine ,0501 psychology and cognitive sciences ,Exercise ,Work Performance ,050107 human factors ,Sleep restriction ,Wildfire suppression ,medicine.diagnostic_test ,Urine specific gravity ,business.industry ,05 social sciences ,Australia ,Public Health, Environmental and Occupational Health ,030229 sport sciences ,Middle Aged ,Firefighters ,Physical therapy ,Sleep Deprivation ,Female ,Sleep (system call) ,heat ,Sleep ,business - Abstract
To examine the effects of sleep restriction on firefighters' physical task performance, physical activity, and physiological and perceived exertion during simulated hot wildfire conditions.31 firefighters were randomly allocated to either the hot (n = 18, HOT; 33 A degrees C, 8-h sleep opportunity) or hot and sleep restricted (n = 13, HOT + SR; 33 A degrees C, 4-h sleep opportunity) condition. Intermittent, self-paced work circuits of six firefighting tasks were performed for 3 days. Firefighters self-reported ratings of perceived exertion. Heart rate, core temperature, and physical activity were measured continuously. Fluids were consumed ad libitum, and all food and fluids consumed were recorded. Urine volume and urine specific gravity (USG) were analysed and sleep was assessed using polysomnography (PSG).There were no differences between the HOT and HOT + SR groups in firefighters' physical task performance, heart rate, core temperature, USG, or fluid intake. Ratings of perceived exertion were higher (p < 0.05) in the HOT + SR group for two of the six firefighting tasks. The HOT group spent approximately 7 min more undertaking moderate physical activity throughout the 2-h work circuits compared to the HOT + SR group.Two nights of sleep restriction did not influence firefighters' physical task performance or physiological responses during 3 days of simulated wildfire suppression. Further research is needed to explore firefighters' pacing strategies during real wildfire suppression. Refereed/Peer-reviewed
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- 2018
116. Sleep in wildland firefighters: what do we know and why does it matter?
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Sally A. Ferguson, Brad Aisbett, Nicola D. Ridgers, Alexander Wolkow, Grace E. Vincent, Sarah M. Jay, Vincent, Grace E, Aisbett, Brad, Wolkow, Alexander, Jay, Sarah M, Ridgers, Nicola D, and Ferguson, Sally A.
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Wildfire suppression ,Ecology ,Applied psychology ,Stressor ,Poison control ,Human factors and ergonomics ,Forestry ,030210 environmental & occupational health ,Mental health ,Occupational safety and health ,03 medical and health sciences ,0302 clinical medicine ,Effects of sleep deprivation on cognitive performance ,Psychology ,030217 neurology & neurosurgery ,Sleep restriction - Abstract
Wildland firefighters perform physical work while being subjected to multiple stressors and adverse, volatile working environments for extended periods. Recent research has highlighted sleep as a significant and potentially modifiable factor impacting operational performance. The aim of this review was to (1) examine the existing literature on firefighters' sleep quantity and quality during wildland firefighting operations; (2) synthesise the operational and environmental factors that impact on sleep during wildland firefighting; and (3) assess how sleep impacts aspects of firefighters' health and safety, including mental and physical health, physical task performance, physical activity and cognitive performance. Firefighters' sleep is restricted during wildfire deployments, particularly when shifts have early start times, are of long duration and when sleeping in temporary accommodation. Shortened sleep impairs cognitive but not physical performance under simulated wildfire conditions. The longer-term impacts of sleep restriction on physiological and mental health require further research. Work shifts should be structured, wherever possible, to provide regular and sufficient recovery opportunities (rest during and sleep between shifts), especially in dangerous working environments where fatigue-related errors have severe consequences. Fire agencies should implement strategies to improve and manage firefighters' sleep and reduce any adverse impacts on firefighters' work. Refereed/Peer-reviewed
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- 2018
117. Improving Cardiometabolic Health with Diet, Physical Activity, and Breaking Up Sitting: What about Sleep?
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Sally A. Ferguson, Corneel Vandelanotte, Nicola D. Ridgers, Charli Sargent, Sarah M. Jay, Grace E. Vincent, Vincent, Grace E, Jay, Sarah M, Sargent, Charli, Vandelanotte, Corneel, Ridgers, Nicola D, and Ferguson, Sally A
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medicine.medical_specialty ,Physiology ,Psychological intervention ,Physical activity ,physical activity ,030209 endocrinology & metabolism ,Sitting ,sleep restriction ,lcsh:Physiology ,03 medical and health sciences ,0302 clinical medicine ,Physical medicine and rehabilitation ,sedentary behavior ,Physiology (medical) ,medicine ,sitting breaks ,030212 general & internal medicine ,Prolonged sitting ,Sleep restriction ,Short sleep ,exercise ,lcsh:QP1-981 ,business.industry ,Sleep in non-human animals ,Perspective ,Physical therapy ,business ,Sleep duration - Abstract
Cardiometabolic disease poses a serious health and economic burden worldwide and its prevalence is predicted to increase. Prolonged sitting, lack of physical activity, poor diet, and short sleep duration are ubiquitous behaviors in modern society, and all are independent risk factors in the development of cardiometabolic disease. Existing evidence demonstrates that breaking up prolonged periods of sitting is beneficial for cardiometabolic health, however, studies have not controlled for prior sleep duration. This article examines how prolonged sitting and short sleep duration independently contribute to cardiometabolic risk, and how breaking up sitting and obtaining adequate sleep may reduce this risk. We suggest that as prolonged sitting and short sleep duration influence the same cardiometabolic parameters, there is potential for short sleep to attenuate the positive impact of breaking up prolonged sitting with physical activity. Likewise, breaking up prolonged sitting and obtaining adequate sleep together could improve predictors of cardiometabolic disease, i.e., the combined effect may be stronger than either alone. To explore these perspectives, we propose a research agenda to investigate the relationship between breaking up prolonged sitting with physical activity and short sleep duration. This will provide an evidence-base for informing the design of interventions to reduce the burden of cardiometabolic disease on communities worldwide. Refereed/Peer-reviewed
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- 2017
118. The sleep architecture of Australian volunteer firefighters during a multi-day simulated wildfire suppression: Impact of sleep restriction and temperature
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Grace E. Vincent, Michael A. Cvirn, Jillian Dorrian, Bradley P. Smith, Sarah M. Jay, Sally A. Ferguson, Cvirn, Michael A, Dorrian, Jillian, Smith, Bradley P, Jay, Sarah M, Vincent, Grace E, and Ferguson, Sally A
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Gerontology ,Adult ,Male ,Volunteers ,medicine.medical_specialty ,Hot Temperature ,Polysomnography ,physical activity ,Human Factors and Ergonomics ,Audiology ,sleep restriction ,03 medical and health sciences ,0302 clinical medicine ,medicine ,firefighter ,Humans ,Wakefulness ,Safety, Risk, Reliability and Quality ,Volunteer ,Exercise ,Sleep restriction ,sleep quantity ,Wildfire suppression ,medicine.diagnostic_test ,business.industry ,Public Health, Environmental and Occupational Health ,Australia ,Sleep architecture ,030210 environmental & occupational health ,Sleep in non-human animals ,Sleep deprivation ,Firefighters ,Sleep Deprivation ,Female ,sleep architecture ,medicine.symptom ,heat ,business ,Sleep ,030217 neurology & neurosurgery - Abstract
Wildland firefighting exposes personnel to combinations of occupational and environmental stressors that include physical activity, heat and sleep restriction. However, the effects of these stressors on sleep have rarely been studied in the laboratory, and direct comparisons to field scenarios remain problematic. The aim of this study was to examine firefighters’ sleep during a three-day, four-night simulated wildfire suppression that included sleep restriction and physical activity circuits representative of firefighting wildfire suppression tasks in varied temperatures. Sixty-one volunteer firefighters (37.5 ± 14.5 years of age, mean ± SD) were assigned to one of three conditions: control (n = 25; 8 h sleep opportunities and 18–20 °C), awake (n = 25; 4 h sleep opportunities and 18–20 °C) or awake/hot (n = 11; 4 h sleep opportunities and 33–35 °C during the day and 23–25 °C during the night). Results demonstrated that amounts of N1, N2 and R sleep, TST, SOL and WASO declined, whilst sleep efficiency increased significantly in the awake and awake/hot conditions compared to the control condition. Results also demonstrated that SWS sleep remained relatively stable in the awake and awake/hot conditions compared to control values. Most importantly, no significant differences were found for any of the sleep measures between the awake and awake/hot conditions. Thus, working in hot daytime temperatures in combination with sleep restriction during the night did not affect patterns of sleep compared to working in temperate conditions in combination with sleep restriction during the night. However, the effects on sleep of high (>25 °C) night-time temperatures with sleep restriction in addition to physical activity remains to be studied. Refereed/Peer-reviewed
- Published
- 2015
119. The Impact of Heat Exposure and Sleep Restriction on Firefighters’ Work Performance and Physiology during Simulated Wildfire Suppression
- Author
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Brad Aisbett, Nicola D. Ridgers, Rodney J. Snow, Brianna Larsen, Sally A. Ferguson, Grace E. Vincent, Vincent, Grace E, Aisbett, Brad, Larsen, Brianna, Ridgers, Nicola D, Snow, Rod, and Ferguson, Sally A
- Subjects
Adult ,Male ,Hot Temperature ,Time Factors ,Health, Toxicology and Mutagenesis ,lcsh:Medicine ,Poison control ,Physiology ,Firefighting ,Polysomnography ,Article ,sleep restriction ,03 medical and health sciences ,0302 clinical medicine ,Heart Rate ,firefighting ,physical performance ,work physiology ,Heart rate ,Humans ,Medicine ,Work Performance ,Sleep restriction ,Rating of perceived exertion ,medicine.diagnostic_test ,business.industry ,lcsh:R ,Australia ,Public Health, Environmental and Occupational Health ,030229 sport sciences ,Middle Aged ,030210 environmental & occupational health ,Sleep in non-human animals ,Sleep deprivation ,Firefighters ,Sleep Deprivation ,Female ,medicine.symptom ,business - Abstract
Refereed/Peer-reviewed This study was designed to examine the effects of ambient heat on firefighters' physical task performance, and physiological and perceptual responses when sleep restricted during simulated wildfire conditions. Thirty firefighters were randomly allocated to the sleep restricted (n = 17, SR; 19 degrees C, 4-h sleep opportunity) or hot and sleep restricted (n = 13, HOT + SR; 33 degrees C, 4-h sleep opportunity) condition. Firefighters performed two days of simulated, intermittent, self-paced work circuits comprising six firefighting tasks. Heart rate, and core temperature were measured continuously. After each task, firefighters reported their rating of perceived exertion and thermal sensation. Effort sensation was also reported after each work circuit. Fluids were consumed ad libitum. Urine volume and urine specific gravity were analysed. Sleep was monitored using polysomnography. There were no differences between the SR and HOT + SR groups in firefighters' physiological responses, hydration status, ratings of perceived exertion, motivation, and four of the six firefighting tasks (charged hose advance, rake, hose rolling, static hose hold). Black out hose and lateral repositioning were adversely affected in the HOT + SR group. Working in hot conditions did not appear to consistently impair firefighters work performance, physiology, and perceptual responses. Future research should determine whether such findings remain true when individual tasks are performed over longer durations.
- Published
- 2017
120. Firefighters’ Physical Activity across Multiple Shifts of Planned Burn Work
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Brad Aisbett, Grace E. Vincent, Nicola D. Ridgers, Stephanie E. Chappel, Chappel, Stephanie E, Aisbett, Brad, Vincent, Grace E, and Ridgers, Nicola D
- Subjects
Adult ,Male ,Time Factors ,Health, Toxicology and Mutagenesis ,prescribed burning ,Physical activity ,lcsh:Medicine ,Article ,Fires ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Humans ,0501 psychology and cognitive sciences ,Exercise ,050107 human factors ,Sedentary time ,hazard reduction burning ,firefighting ,lcsh:R ,05 social sciences ,Work (physics) ,Australia ,Public Health, Environmental and Occupational Health ,actigraphy ,workplace ,environment ,Actigraphy ,030229 sport sciences ,Middle Aged ,Energy expenditure ,Firefighters ,Female ,Demography - Abstract
Refereed/Peer-reviewed Little is currently known about the physical activity patterns of workers in physically demanding populations. The aims of this study were to (a) quantify firefighters' physical activity and sedentary time within (2-h periods) and across planned burn shifts; and (b) examine whether firefighters' activity levels during one shift or 2-h period was associated with their activity levels in the following shift or 2-h period. Thirty-four salaried firefighters (26 men, 8 women) wore an Actical accelerometer for 28 consecutive days. Time spent sedentary (SED) and in light-(LPA), moderate-(MPA) and vigorous-intensity physical activity (VPA) were derived using validated cut-points. Multilevel analyses (shift, participant) were conducted using generalised linear latent and mixed models. Firefighters spent the majority of a planned burn shift (average length 10.4 h) or 2-h period engaged in LPA (69% and 70%, respectively). No significant associations were observed between SED and physical activity levels between consecutive planned burned shifts or 2-h periods. The physical activity that a firefighter engaged in during one shift (or 2-h period) did not subsequently affect their physical activity levels in the subsequent shift (or 2-h period). Further research is needed to establish how workers in physically demanding populations are able to sustain their activity levels over long periods of time. usc
- Published
- 2016
121. Golden Years, Golden Sleep: The Impact of Physical Activity on Older Adults' Sleep Quality.
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Lastella M, Duncan MJ, and Vincent GE
- Published
- 2024
- Full Text
- View/download PDF
122. Bedtime procrastination and sleep disturbances: a call for targeted research and interventions to improve sleep health.
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Hill VM, Meaklim H, Ferguson SA, Junge M, Rebar AL, and Vincent GE
- Published
- 2024
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- View/download PDF
123. Effects of pharmacotherapy on sleep-related outcomes in adults with chronic low back pain: A systematic review and meta-analysis of randomised controlled trials.
- Author
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Craige EA, Tagliaferri SD, Ferguson SA, Scott H, Belavy DL, Easton DF, Buntine P, Memon AR, Owen PJ, and Vincent GE
- Abstract
Background: Adults with chronic low back pain (CLBP) suffer impaired sleep. Medications for CLBP can impact sleep which in turn may influence treatment outcomes. This systematic review and meta-analysis examined the effects of pharmacotherapy (any type) on sleep in adults with CLBP., Methods: In this systematic review and meta-analysis, we searched PubMed, CINAHL, SPORTDiscus, PsycINFO, EMBASE, and CENTRAL from inception to 10 July 2022. Randomised controlled trials that investigated the effects of pharmacotherapy on sleep in adults with CLBP were included. Manual citation search of relevant systematic reviews and included studies were also conducted. Mean change from baseline for sleep outcomes (e.g., sleep quality, total sleep time, wake after sleep onset) was the effect of interest. Pairwise inverse-variance random effect meta-analysis was performed to impute pooled estimates (Hedges' g or risk ratios). The Hartung-Knapp-Sidik-Jonkman method was used where there were ≤5 studies. The Grading of Recommendations Assessment, Development, and Evaluation (GRADE) system was used for evaluating the certainty of evidence. This study was registered with PROSPERO (CRD42022309419)., Findings: Assessment of 3959 records resulted in nine studies (n = 2927) being included. Pharmacotherapy for CLBP management had a small, yet unlikely clinically significant, effect on improving sleep in adults with CLBP, when compared to placebo (g [95% CI]: -0.23 [-0.37, -0.09], p = .0009; I
2 = 30.1%; n = 1433; studies: n = 8; GRADE: low). Notably, no eligible studies investigated the effect of sleep medications in this population, despite being within the scope of this review., Interpretation: Pharmacotherapy used to manage CLBP provided improvements in sleep in adults with CLBP. Given that these effects were small and unlikely clinically significant, clinicians could consider alternative treatments (e.g., non-pharmacological interventions) for managing sleep in adults with CLBP. However, low to very low certainty of evidence precluded strong conclusions. To improve certainty of evidence and confidence in the effect estimates, future research needs to use robust method to minimise bias. Additional research evaluating multiple sleep characteristics, using both validated objective and subjective measures, is also warranted to further investigate the influence of distinct sleep parameters., Funding: The Summer Research Scholarship from the Appleton Institute, Central Queensland University, Australia., Competing Interests: All authors declare that they have no competing interests., (© 2022 The Authors.)- Published
- 2022
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124. Controversies in the Science of Sedentary Behaviour and Health: Insights, Perspectives and Future directions from the 2018 Queensland Sedentary Behaviour Think Tank.
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Biddle SJH, Bennie JA, De Cocker K, Dunstan D, Gardiner PA, Healy GN, Lynch B, Owen N, Brakenridge C, Brown W, Buman M, Clark B, Dohrn IM, Duncan M, Gilson N, Kolbe-Alexander T, Pavey T, Reid N, Vandelanotte C, Vergeer I, and Vincent GE
- Subjects
- Exercise, Female, Humans, Male, Posture, Queensland, Health Behavior, Sedentary Behavior
- Abstract
The development in research concerning sedentary behaviour has been rapid over the past two decades. This has led to the development of evidence and views that have become more advanced, diverse and, possibly, contentious. These include the effects of standing, the breaking up of prolonged sitting and the role of moderate-to-vigorous physical activity (MVPA) in the association between sedentary behaviour and health outcomes. The present aim is to report the views of experts (n = 21) brought together (one-day face-to-face meeting in 2018) to consider these issues and provide conclusions and recommendations for future work. Each topic was reviewed and presented by one expert followed by full group discussion, which was recorded, transcribed and analysed. The experts concluded that (a). standing may bring benefits that accrue from postural shifts. Prolonged (mainly static) standing and prolonged sitting are both bad for health; (b). 'the best posture is the next posture'. Regularly breaking up of sitting with postural shifts and movement is vital; (c). health effects of prolonged sitting are evident even after controlling for MVPA, but high levels of MVPA can attenuate the deleterious effects of prolonged sitting depending on the health outcome of interest. Expert discussion addressed measurement, messaging and future directions., Competing Interests: The authors declare no conflict of interest.
- Published
- 2019
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125. The Impact of on-Call Work for Partners' Sleep, Relationship Quality and Daytime Functioning.
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Karan SM, Vincent GE, Ferguson SA, and Jay SM
- Abstract
The on-call schedule is a common work arrangement that allows for the continuance of services during periods of low demand or emergencies. Even though 17%-25% of the world's population participate in on-call work, the human impacts of on-call are generally poorly described in the literature. Of the studies available on the effects of on-call work on workers, disturbances to sleep duration and sleep quality are the most commonly reported, along with negative sleep-related consequences on sleepiness, fatigue, stress and mood. Research has shown that for couples sharing a bed, disturbances to sleep can impair relationship conflict resolution and reduce relationship quality. In the 'off-site' on-call scenario where workers are sleeping at home, their co-sleeping partner may be at risk of sleep disturbances and the subsequent detrimental consequences of this disturbed sleep for themselves and their relationship. To date, few studies have investigated the impact of on-call work for partners' sleep and the potential sleep-related consequences. Therefore, further studies are needed to specifically address whether on-call work impacts the sleep of partners and whether these sleep disturbances also impact the partner's daily performance and relationship quality. Our aim was to provide a narrative around the existing, relevant literature that both investigate and inform the potential impact of on-call for workers' partners' sleep and related consequences., Competing Interests: Conflicts of InterestThe authors declare no conflict of interest., (© 2019 by the authors.)
- Published
- 2019
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126. The Cost of Inadequate Sleep among On-Call Workers in Australia: A Workplace Perspective.
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Vincent GE, Kinchin I, Ferguson SA, and Jay SM
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- Adult, Australia, Female, Humans, Male, Middle Aged, Prevalence, Surveys and Questionnaires, Personnel Staffing and Scheduling statistics & numerical data, Sleep physiology, Sleep Wake Disorders economics, Sleep Wake Disorders epidemiology, Workplace psychology
- Abstract
On-call or stand-by is becoming an increasingly prevalent form of work scheduling. However, on-call arrangements are typically utilised when workloads are low, for example at night, which can result in inadequate sleep. It is a matter of concern that on-call work is associated with an increased risk of workplace injury. This study sought to determine the economic cost of injury due to inadequate sleep in Australian on-call workers. The prevalence of inadequate sleep among on-call workers was determined using an online survey, and economic costs were estimated using a previously validated costing methodology. Two-thirds of the sample (66%) reported obtaining inadequate sleep on weekdays (work days) and over 80% reported inadequate sleep while on-call. The resulting cost of injury is estimated at $2.25 billion per year ($1.71-2.73 billion). This equates to $1222 per person per incident involving a short-term absence from work; $2.53 million per incident classified as full incapacity, and $1.78 million for each fatality. To the best of our knowledge this is the first study to quantify the economic cost of workplace injury due to inadequate sleep in on-call workers. Well-rested employees are critical to safe and productive workplace operations. Therefore, it is in the interest of both employers and governments to prioritise and invest far more into the management of inadequate sleep in industries which utilise on-call work arrangements., Competing Interests: The authors declare no conflict of interest.
- Published
- 2018
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127. The impact of breaking up prolonged sitting on glucose metabolism and cognitive function when sleep is restricted.
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Vincent GE, Jay SM, Sargent C, Kovac K, Vandelanotte C, Ridgers ND, and Ferguson SA
- Abstract
Objectives: To investigate the acute benefits of breaking up prolonged sitting with light-intensity physical activity on (i) glucose metabolism under conditions of sleep restriction, and (ii) cognitive deficits associated with sleep restriction., Methods: This counterbalanced, crossover trial consisted of two five-day (5 night) experimental conditions separated by a two-week washout period. On the first night, participants were given a 9-h sleep opportunity to allow the collection of steady-state baseline measures the following day. This was followed by three consecutive nights of sleep restriction (5-h sleep opportunity). In the sitting condition (SIT), participants remained seated between 1000 and 1800 h. In the physical activity condition (ACT), participants completed 3-min bouts of light-intensity walking every 30 min on a motorised treadmill between 1000 and 1800 h. At all other times, in both conditions, participants remained seated, except when walking to the dining room or to use the bathroom (max distance = 32 m). Six physically inactive, healthy males were randomised to one of two trial orders, 1) SIT then ACT, or 2) ACT then SIT. Continuous measures of interstitial glucose were measured at 5-min intervals. A cognitive and subjective test battery was administered every two hours during wake periods. Analyses were conducted using a series of linear mixed-effect ANOVAs., Results: No differences in interstitial glucose concentration or cognitive performance were observed between the SIT condition and the ACT condition. Participants reported higher levels of sleepiness, and felt less alert in the SIT condition compared with the ACT condition., Conclusions: There were no observable benefits of breaking up prolonged sitting on glucose metabolism under conditions of sleep restriction. These findings have implications for behaviour change interventions. Future studies will need to include larger, less homogenous study populations and appropriate control conditions (i.e., 8-9 h sleep opportunities).
- Published
- 2017
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128. The Impact of Heat Exposure and Sleep Restriction on Firefighters' Work Performance and Physiology during Simulated Wildfire Suppression.
- Author
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Vincent GE, Aisbett B, Larsen B, Ridgers ND, Snow R, and Ferguson SA
- Subjects
- Adult, Australia, Female, Heart Rate, Humans, Male, Middle Aged, Time Factors, Firefighters, Hot Temperature, Sleep Deprivation, Work Performance
- Abstract
This study was designed to examine the effects of ambient heat on firefighters' physical task performance, and physiological and perceptual responses when sleep restricted during simulated wildfire conditions. Thirty firefighters were randomly allocated to the sleep restricted ( n = 17, SR; 19 °C, 4-h sleep opportunity) or hot and sleep restricted ( n = 13, HOT + SR; 33 °C, 4-h sleep opportunity) condition. Firefighters performed two days of simulated, intermittent, self-paced work circuits comprising six firefighting tasks. Heart rate, and core temperature were measured continuously. After each task, firefighters reported their rating of perceived exertion and thermal sensation. Effort sensation was also reported after each work circuit. Fluids were consumed ad libitum. Urine volume and urine specific gravity were analysed. Sleep was monitored using polysomnography. There were no differences between the SR and HOT + SR groups in firefighters' physiological responses, hydration status, ratings of perceived exertion, motivation, and four of the six firefighting tasks (charged hose advance, rake, hose rolling, static hose hold). Black out hose and lateral repositioning were adversely affected in the HOT + SR group. Working in hot conditions did not appear to consistently impair firefighters work performance, physiology, and perceptual responses. Future research should determine whether such findings remain true when individual tasks are performed over longer durations.
- Published
- 2017
- Full Text
- View/download PDF
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