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Actigraph

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https://www.readbyqxmd.com/read/28627307/sleep-quality-associated-with-different-work-schedules-a-longitudinal-study-of-nursing-staff
#1
Shu-Fen Niu, Nae-Fang Miao, Yuan-Mei Liao, Mei-Ju Chi, Min-Huey Chung, Kuei-Ru Chou
PURPOSE: To explore the differences in sleep parameters between nurses working a slow, forward rotating shift and those working a fixed day shift. METHOD: A longitudinal parallel-group comparison design was used in this prospective study. Participants (female) were randomly assigned to a rotating shift or a fixed day shift group. Participants in the rotating shift group worked day shift for the first 4 weeks, followed by evening shift for the second and night shift the third...
July 2017: Biological Research for Nursing
https://www.readbyqxmd.com/read/28619179/agreement-between-sleep-diary-and-actigraphy-in-a-highly-educated-brazilian-population
#2
Marcela Zambrim Campanini, Esther Lopez-Garcia, Fernando Rodríguez-Artalejo, Alberto Durán González, Selma Maffei Andrade, Arthur Eumann Mesas
OBJECTIVE: This study evaluated the agreement between a sleep diary and actigraphy on the assessment of sleep parameters among school teachers from Brazil. METHODS: A total of 163 teachers (66.3% women; aged 45 ± 9 years) filled out a sleep diary and wore a wrist actigraph device for seven consecutive days. Data were collected from August 2014 to March 2015 in Londrina, a large city in southern Brazil. Intraclass correlation coefficients (ICC) and Pearson correlation coefficients (r) were used to compare self-reported and actigraphic data...
July 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28606497/validity-of-a-commercial-wearable-sleep-tracker-in-adult-insomnia-disorder-patients-and-good-sleepers
#3
Seung-Gul Kang, Jae Myeong Kang, Kwang-Pil Ko, Seon-Cheol Park, Sara Mariani, Jia Weng
OBJECTIVES: To compare the accuracy of the commercial Fitbit Flex device (FF) with polysomnography (PSG; the gold-standard method) in insomnia disorder patients and good sleepers. METHODS: Participants wore an FF and actigraph while undergoing overnight PSG. Primary outcomes were intraclass correlation coefficients (ICCs) of the total sleep time (TST) and sleep efficiency (SE), and the frequency of clinically acceptable agreement between the FF in normal mode (FFN) and PSG...
June 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28604558/generating-actigraph-counts-from-raw-acceleration-recorded-by-an-alternative-monitor
#4
Jan Christian Brønd, Lars Bo Andersen, Daniel Arvidsson
PURPOSE: To implement an aggregation method in Matlab for generating ActiGraph counts from raw acceleration recorded with an alternative accelerometer device and to investigate the validity of the method. METHODS: The aggregation method including the frequency band-pass filter was implemented and optimized based on standardized sinusoidal acceleration signals generated in Matlab and processed in the ActiLife software. Evaluating the validity of the aggregation method was approached using a mechanical setup and with a 24-hour free-living recording using a convenient sample of nine subjects...
June 9, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28595871/identifying-a-motor-proficiency-barrier-for-meeting-physical-activity-guidelines-in-children
#5
An De Meester, David Stodden, Jacqueline Goodway, Larissa True, Ali Brian, Rick Ferkel, Leen Haerens
OBJECTIVES: This study examined the existence of a threshold level (proficiency barrier) of actual motor competence (MC) below which a child is not likely to attain 60min of moderate-to-vigorous physical activity (MVPA) per day. DESIGN: A cross-sectional study. METHODS: Actual MC was assessed in 326 children (48.5% boys; age=9.50±1.24years) using the Test of Gross Motor Development-2; MVPA was measured with ActiGraph GT3X+accelerometers. Perceived MC, included as a potential mediating variable, was assessed with the Self-Perception Profile for Children...
May 25, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28595523/blue-enriched-lighting-for-older-people-living-in-care-homes-effect-on-activity-actigraphic-sleep-mood-and-alertness
#6
Samantha Hopkins, Peter Lloyd Morgan, Luc J M Schlangen, Peter Williams, Debra J Skene, Benita Middleton
Environmental (little outdoor light; low indoor lighting) and age-related physiological factors (reduced light transmission through the ocular lens, reduced mobility) contribute to a light-deprived environment for older people living in care homes. This study investigates the effect of increasing indoor light levels with blue-enriched white lighting on objective (rest-activity rhythms, performance) and self-reported (mood, sleep, alertness) measures in older people. Eighty residents (69 female), aged 86 ± 8 yrs (mean ± SD), participated (MMSE 19 ± 6)...
June 7, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/28595019/the-validity-of-consumer-level-activity-monitors-in-healthy-older-adults-in-free-living-conditions
#7
Nicolas Farina, Ruth G Lowry
Consumer-level activity monitors, such as Fitbit and Misfit devices, are a popular and low-cost means of measuring physical activity. This study aims to compare the accuracy of step counts from two consumer-level activity monitors against two reference devices in healthy, community dwelling older adults in free-living conditions. Twenty-five older adults (aged 65-84) simultaneously wore 5 devices (e.g. Misfit Shine and Fitbit Charge HR) over 7 consecutive days. All consumer-level activity monitors positively correlated with reference devices (p<0...
May 22, 2017: Journal of Aging and Physical Activity
https://www.readbyqxmd.com/read/28594297/assessment-of-sleep-in-subjects-with-visual-impairment-comparison-using-subjective-and-objective-methods
#8
Diego Grasel Barbosa, Rubian Diego Andrade, Manoella de Oliveira Santos, Raísa Carvalho Da Silva, Thaís Silva Beltrame, Érico Pereira Gomes Felden
The objective of the present study was to verify the agreement between objective and subjective measures of sleep in people with and without visual impairment. Thirty-seven subjects with visual impairment participated in the study (19 blind without light perception and 18 low-vision), as well as 34 subjects with normal vision, with paired age and gender characteristics. For the subjective sleep evaluation, we used the Sleep Quality Index-PSQI and for the objective evaluation we used the ActiGraph GT3X+. Among the three analyzed groups, the blind was the only ones who presented differences between subjective and objective sleep duration (p = 0...
June 8, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28594248/advanced-phases-and-reduced-amplitudes-are-suggested-to-characterize-the-daily-rest-activity-cycles-in-depressed-adolescent-boys
#9
Ilona Merikanto, Timo Partonen, Tiina Paunio, Anu E Castaneda, Mauri Marttunen, Anna S Urrila
Self-reported eveningness has been previously associated with depressed mood among adults and adolescents. Here, we study how circadian indicators based on actigraphic data differ between depressed and healthy adolescent boys. Our sample consisted of 17 medication-free adolescent boys, aged 14.5 to 17.5 years, of which eight had depressive disorder and were currently depressed and nine were healthy comparison participants. Psychiatric assessment was conducted by diagnostic interviews and complemented with observer-rating and self-rating scales...
June 8, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28593124/pragmatic-evaluation-of-the-go2play-active-play-intervention-on-physical-activity-and-fundamental-movement-skills-in-children
#10
Avril Johnstone, Adrienne R Hughes, Xanne Janssen, John J Reilly
Active play is a novel approach to addressing low physical activity levels and fundamental movement skills (FMS) in children. This study aimed to determine if a new school-based, 'Go2Play Active Play' intervention improved school day physical activity and FMS. This was a pragmatic evaluation conducted in Scotland during 2015-16. Participants (n = 172; mean age = 7 years) were recruited from seven primary schools taking part in the 5-month intervention, plus 24 participants not receiving the intervention were recruited to act as a comparison group...
September 2017: Preventive Medicine Reports
https://www.readbyqxmd.com/read/28592241/effect-of-major-school-playground-reconstruction-on-physical-activity-and-sedentary-behaviour-camden-active-spaces
#11
Mark Hamer, Daniel Aggio, Georgina Knock, Courtney Kipps, Aparna Shankar, Lee Smith
BACKGROUND: The physical school environment is a promising setting to increase children's physical activity although robust evidence is sparse. We examined the effects of major playground reconstruction on physical activity and sedentary time in primary schools using a quasi-experimental design (comparison group pre-test/post-test design). METHODS: Five experimental and two control schools from deprived areas of inner city London were recruited at baseline. Main outcome was physical activity and sedentary time measured from objective monitoring (Actigraph accelerometer) at one year follow up...
June 7, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28589732/functional-factors-that-are-important-correlates-to-physical-activity-in-people-with-multiple-sclerosis-a-pilot-study
#12
Nathaniel B Ketelhut, John H Kindred, Richard E Pimentel, Ann M Hess, Brian L Tracy, Raoul F Reiser, Thorsten Rudroff
PURPOSE: Identify functional factors that are important correlates to physical activity levels among people with multiple sclerosis. METHODS: A total of eight functional tests were conducted and physical activity was objectively measured (Actigraph GT3X accelerometer) for one week in 34 people with multiple sclerosis. A corrected Akaike Information Criterion analysis was performed to identify the strongest correlates with moderate-to-vigorous physical activity, total activity and sedentary time...
June 7, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28579765/effects-of-a-giant-exercising-board-game-intervention-on-ambulatory-physical-activity-among-nursing-home-residents-a-preliminary-study
#13
Alexandre Mouton, Nicolas Gillet, Flore Mouton, Dave Van Kann, Olivier Bruyère, Marc Cloes, Fanny Buckinx
PURPOSE: This study examined the effects of a giant (4×3 m) exercising board game intervention on ambulatory physical activity (PA) and a broader array of physical and psychological outcomes among nursing home residents. MATERIALS AND METHODS: A quasi-experimental longitudinal study was carried out in two comparable nursing homes. Ten participants (aged 82.5±6.3 and comprising 6 women) meeting the inclusion criteria took part in the 1-month intervention in one nursing home, whereas 11 participants (aged 89...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28578930/meal-timing-regulates-the-human-circadian-system
#14
Sophie M T Wehrens, Skevoulla Christou, Cheryl Isherwood, Benita Middleton, Michelle A Gibbs, Simon N Archer, Debra J Skene, Jonathan D Johnston
Circadian rhythms, metabolism, and nutrition are intimately linked [1, 2], although effects of meal timing on the human circadian system are poorly understood. We investigated the effect of a 5-hr delay in meals on markers of the human master clock and multiple peripheral circadian rhythms. Ten healthy young men undertook a 13-day laboratory protocol. Three meals (breakfast, lunch, dinner) were given at 5-hr intervals, beginning either 0.5 (early) or 5.5 (late) hr after wake. Participants were acclimated to early meals and then switched to late meals for 6 days...
June 19, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28575510/externalizing-behaviors-and-callous-unemotional-traits-different-associations-with-sleep-quality
#15
Dan Denis, Reece Akhtar, Benjamin C Holding, Christina Murray, Jennifer Panatti, Gordon Claridge, Avi Sadeh, Nicola L Barclay, Rachael O'Leary, Barbara Maughan, Tom A McAdams, Richard Rowe, Thalia C Eley, Essi Viding, Alice M Gregory
Study Objectives: Sleep quality is associated with different aspects of psychopathology, but relatively little research has examined links between sleep quality and externalizing behaviors or callous-unemotional traits. We examined: (1) whether an association exists between sleep quality and externalizing behaviors; (2) whether anxiety mediates this association; (3) whether callous-unemotional traits are associated with sleep quality. Methods: Data from two studies were used...
June 1, 2017: Sleep
https://www.readbyqxmd.com/read/28575141/objectively-measured-physical-activity-and-kidney-function-in-older-men-a-cross-sectional-population-based-study
#16
Tessa J Parsons, Claudio Sartini, Sarah Ash, Lucy T Lennon, S Goya Wannamethee, I-Min Lee, Peter H Whincup, Barbara J Jefferis
Background: kidney function declines in older adults and physical activity levels are low. We investigated whether higher levels of physical activity and lower levels of sedentary behaviour were associated with lower odds of low kidney function in older men. Methods: cross-sectional study of 1,352 men from the British Regional Heart Study, mean (standard deviation) age 78.5 (4.6) year. Physical activity and sedentary behaviour were measured using Actigraph GT3X accelerometers...
June 1, 2017: Age and Ageing
https://www.readbyqxmd.com/read/28566264/understanding-environmental-and-contextual-influences-of-physical-activity-during-first-year-university-the-feasibility-of-using-ecological-momentary-assessment-in-the-movingu-study
#17
Chloe Bedard, Sara King-Dowling, Madeline McDonald, Genevieve Dunton, John Cairney, Matthew Kwan
BACKGROUND: It is well established that drastic declines in physical activity (PA) occur during young adults' transition into university; however, our understanding of contextual and environmental factors as it relates to young adults' PA is limited. OBJECTIVE: The purpose of our study was to examine the feasibility of using wrist-worn accelerometers and the use of ecological momentary assessment (EMA) to assess the context and momentary correlates of PA on multiple occasions each day during first-year university...
May 31, 2017: JMIR Public Health and Surveillance
https://www.readbyqxmd.com/read/28559229/design-and-evaluation-of-a-computer-based-24-hour-physical-activity-recall-cpar24-instrument
#18
Simone Kohler, Gundula Behrens, Matthias Olden, Sebastian E Baumeister, Alexander Horsch, Beate Fischer, Michael F Leitzmann
BACKGROUND: Widespread access to the Internet and an increasing number of Internet users offers the opportunity of using Web-based recalls to collect detailed physical activity data in epidemiologic studies. OBJECTIVE: The aim of this investigation was to evaluate the validity and reliability of a computer-based 24-hour physical activity recall (cpar24) instrument with respect to the recalled 24-h period. METHODS: A random sample of 67 German residents aged 22 to 70 years was instructed to wear an ActiGraph GT3X+ accelerometer for 3 days...
May 30, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28556682/bouts-of-vigorous-physical-activity-and-bone-strength-accrual-during-adolescence
#19
Leigh Gabel, Heather M Macdonald, Lindsay Nettlefold, Heather A McKay
PURPOSE: To examine the influence of vigorous physical activity (VPA) bout frequency on bone strength accrual across adolescence, independent of total volume of VPA. METHOD: We measured VPA (6 METs; total volume and bout frequency < 5 min in duration) annually using waist-worn accelerometers (ActiGraph GT1M) in 309 adolescents (9-20 years at baseline: 99, <13 years; 126, 13-18 years; 84, >18 years) over a maximum of 4 years. We applied finite element analysis to high-resolution peripheral quantitative computed tomography scans of the distal tibia (8% site) to estimate bone strength (failure load; F...
May 30, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28547345/where-are-adults-active-an-examination-of-physical-activity-locations-using-gps-in-five-us-cities
#20
Katelyn M Holliday, Annie Green Howard, Michael Emch, Daniel A Rodríguez, Wayne D Rosamond, Kelly R Evenson
Increasing physical activity (PA) at the population level requires appropriately targeting intervention development. Identifying the locations in which participants with various sociodemographic, body weight, and geographic characteristics tend to engage in varying intensities of PA as well as locations these populations underutilize for PA may facilitate this process. A visual location-coding protocol was developed and implemented in Google Fusion Tables and Maps using data from participants (N = 223, age 18-85) in five states...
May 25, 2017: Journal of Urban Health: Bulletin of the New York Academy of Medicine
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