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https://www.readbyqxmd.com/read/28818819/quantifying-human-movement-using-the-movn-smartphone-app-validation-and-field-study
#1
Ralph Maddison, Luke Gemming, Javier Monedero, Linda Bolger, Sarahjane Belton, Johann Issartel, Samantha Marsh, Artur Direito, Madeleine Solenhill, Jinfeng Zhao, Daniel John Exeter, Harshvardhan Vathsangam, Jonathan Charles Rawstorn
BACKGROUND: The use of embedded smartphone sensors offers opportunities to measure physical activity (PA) and human movement. Big data-which includes billions of digital traces-offers scientists a new lens to examine PA in fine-grained detail and allows us to track people's geocoded movement patterns to determine their interaction with the environment. OBJECTIVE: The objective of this study was to examine the validity of the Movn smartphone app (Moving Analytics) for collecting PA and human movement data...
August 17, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28797831/validity-of-the-actigraph-gt3x-and-bodymedia-sensewear-armband-to-estimate-energy-expenditure-during-physical-activity-and-sport
#2
Paul B Gastin, Cassy Cayzer, Dan Dwyer, Sam Robertson
OBJECTIVES: The purpose of this study was to assess the validity of the ActiGraph GT3X+ (GT3X+) and the BodyMedia SenseWear Armband (SWA) to estimate energy expenditure (EE) during physical activity and field sport movements. DESIGN: Criterion validity. METHODS: Twenty-six active adults completed a single 90min session involving alternating intervals of exercise (5min) and recovery (10min). Exercise involved walking (4km/h), jogging (8km/h), running (12km/h) or a sport-simulated circuit (three intervals)...
July 31, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28794802/healthy-lifestyle-intervention-for-adult-clinic-patients-with-type-2-diabetes-mellitus
#3
Steven S Coughlin, Christos Hatzigeorgiou, Judith Anglin, Ding Xie, Gina M Besenyi, Gianluca De Leo, Jessica Stewart, Thad Wilkins
BACKGROUND: Diet and exercise therapy have been reported to be effective in improving blood glucose control and are an important part of treatment of type 2 diabetes mellitus. OBJECTIVE: The goal of this study is to examine the efficacy of a healthy lifestyle intervention for adult clinic patients with type 2 diabetes mellitus, as measured by Hgb-A1c, cardiovascular indicators, physical activity, weight, and BMI. Also of interest are optimal strategies for subject recruitment, the number of intervention sessions attended, and participant use of the Fitbit watch to monitor their physical activity and track food and beverage consumption...
2017: Diabetes Management
https://www.readbyqxmd.com/read/28777438/the-roles-of-parental-support-and-family-stress-in-adolescent-sleep
#4
Kim M Tsai, Ronald E Dahl, Michael R Irwin, Julienne E Bower, Heather McCreath, Teresa E Seeman, David M Almeida, Andrew J Fuligni
The current study examines the association between parental support and adolescent sleep under varying levels of family stress. Participants included 316 adolescents (Mage  = 16.40 years, 43% male) and their parents (Mage  = 45.67 years, 91% mothers) from diverse ethnic backgrounds. Both adolescents and parents completed questionnaires and adolescents wore wrist actigraphs and completed self-reports on their sleep for 7 consecutive days. Results indicated that under contexts of family stress, more parental support was linked to longer sleep duration, less sleep variability, and less time spent awake during the night...
August 4, 2017: Child Development
https://www.readbyqxmd.com/read/28771793/infant-sleep-problems-the-sleep-characteristics-of-the-don-t-know-response
#5
Shao-Yu Tsai, Chien-Chang Lee, Li-Chiou Chen, Yi-Ching Tung
AIMS: To examine the sleep characteristics of infants with parentally reported sleep problems, with parentally reported no sleep problems and with parentally reported uncertain sleep conditions. BACKGROUND: Infant sleep problems are recognized as a major health issue worldwide. However, in our daily clinical practices it is not uncommon for parents not to know whether their infant sleep is problematic. DESIGN AND METHODS: A prospective study conducted between 2012 - 2015 where 219 parents completed questionnaires and infants wore an actigraph monitor for 7 days...
August 3, 2017: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/28764730/objectively-measured-physical-activity-patterns-sedentary-time-and-parent-reported-screen-time-across-the-day-in-four-year-old-swedish-children
#6
Daniel Berglind, Per Tynelius
BACKGROUND: Physical activity (PA) improves health outcomes accumulating evidence suggests that sedentary time (ST), especially parent-reported screen-time, is associated with negative health outcomes in children. The aim of the present study is to describe levels and patterns of PA and ST across the day and week and activity pattern differences between the sexes, across all weekdays and time spent in and outside the preschool in four-year old children. METHODS: In total 899 four-year old Swedish children who had both complete questionnaire data on screen-time behaviors and objective activity variables and at least 4 days, including one weekend day, with more than 10 h of GT3X+ Actigraph accelerometer wear time data were included in the study...
August 1, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28761711/comparison-of-two-accelerometers-for-measuring-physical-activity-and-sedentary-behaviour
#7
Ted Pfister, Charles E Matthews, Qinggang Wang, Karen A Kopciuk, Kerry Courneya, Christine Friedenreich
PURPOSE: A central aspect of physical activity and sedentary behaviour research is accurate exposure assessment in the context of disease outcomes. The primary objectives of this study were to evaluate the convergent validity and test-retest reliability of the ActiGraph GT3X+ and activPAL3 accelerometers. METHODS: Participants from the Breast Cancer and Exercise Trial in Alberta (n=266) wore both devices concurrently during waking hours for 7 days. Summary measures of time (hours/day) for physical activity and sedentary behaviour were compared between devices using Student's t-tests...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/28761703/validation-of-the-global-physical-activity-questionnaire-for-self-administration-in-a-european-context
#8
Miriam Wanner, Christina Hartmann, Giulia Pestoni, Brian Winfried Martin, Michael Siegrist, Eva Martin-Diener
BACKGROUND/AIM: Little is known about the measurement properties of the self-administered Global Physical Activity Questionnaire (GPAQ) in Europe. The aim was to validate the self-administered GPAQ against accelerometry in Switzerland in German, French and Italian. METHODS: Participants of this cross-sectional study were recruited among members of the Swiss Food Panel (German-speaking and French-speaking samples) and as a convenience sample (Italian-speaking sample)...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/28753626/reallocating-bouted-sedentary-time-to-non-bouted-sedentary-time-light-activity-and-moderate-vigorous-physical-activity-in-adults-with-prediabetes-and-type-2-diabetes
#9
Jenny Rossen, Matthew P Buman, Unn-Britt Johansson, Agneta Yngve, Barbara Ainsworth, Kerstin Brismar, Maria Hagströmer
AIM: The aim of this study was to investigate the potential associations of reallocating 30 minutes sedentary time in long bouts (>60 min) to sedentary time in non-bouts, light intensity physical activity (LPA) and moderate- to vigorous physical activity (MVPA) with cardiometabolic risk factors in a population diagnosed with prediabetes or type 2 diabetes. METHODS: Participants diagnosed with prediabetes and type 2 diabetes (n = 124, 50% men, mean [SD] age = 63...
2017: PloS One
https://www.readbyqxmd.com/read/28748993/-sedentary-lifestyle-is-associated-with-metabolic-and-cardiovascular-risk-factors-independent-of-physical-activity
#10
Ana María Leiva, María Adela Martínez, Carlos Cristi-Montero, Carlos Salas, Rodrigo Ramírez-Campillo, Ximena Díaz Martínez, Nicolás Aguilar-Farías, Carlos Celis-Morales
BACKGROUND: Sedentary behavior is a main risk factor for cardiovascular disease and mortality. AIM: To investigate the association between sedentary behavior and metabolic and cardiovascular risk factors. MATERIAL AND METHODS: We assessed 322 participants aged between 18 to 65 years. Physical activity and sedentary behavior were measured with accelerometers (Actigraph®). Body mass index (BMI), waist circumference, percentage of body fat, diet and blood markers (glucose, lipid profile, insulin and HOMA-IR) were measured with standardized protocols...
April 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/28747136/the-relationship-between-apolipoprotein-%C3%AE%C2%B54-carrier-status-and-sleep-characteristics-in-cognitively-normal-older-adults
#11
Melike Kahya, Eric Vidoni, Jeffrey M Burns, Ashley N Thompson, Kayla Meyer, Catherine F Siengsukon
The apolipoprotein (APOE) ε4 allele, a well-described genetic risk factor for late-onset Alzheimer disease (AD), is associated with sleep disturbances even in cognitively normal older adults, although it is not clear whether this association is independent of sleep apnea. We sought to extend previous studies by examining whether cognitively normal older adults without self-reported sleep apnea who carry the APOE ε4 allele have altered sleep characteristics compared to noncarriers. Data from N = 36 (APOE ε4 carriers [n = 9], noncarriers [n = 27]) cognitively normal older adults (Clinical Dementia Rating [CDR] scale = 0) without self-reported sleep apnea were used for these analyses...
January 1, 2017: Journal of Geriatric Psychiatry and Neurology
https://www.readbyqxmd.com/read/28745334/evaluation-of-the-wrist-worn-actigraph-wgt3x-bt-for-estimating-activity-energy-expenditure-in-preschool-children
#12
C Delisle Nyström, J Pomeroy, P Henriksson, E Forsum, F B Ortega, R Maddison, J H Migueles, M Löf
BACKGROUND/OBJECTIVES: Easy-to-use and accurate methods to assess free-living activity energy expenditure (AEE) in preschool children are required. The aims of this study in healthy preschool children were to (a) evaluate the ability of the wrist-worn ActiGraph wGT3x-BT to predict free-living AEE and (b) assess wear compliance using a 7-day, 24-h protocol. SUBJECTS/METHODS: Participants were 40 Swedish children (5.5±0.2 years) in the Mobile-based intervention intended to stop obesity in preschoolers (MINISTOP) obesity prevention trial...
July 26, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28743111/sleep-and-olfaction-among-older-adults
#13
V Eloesa McSorley, Jayant Pinto, L Philip Schumm, Kristen Wroblewski, David Kern, Martha McClintock, Diane S Lauderdale
BACKGROUND: Sleep and olfaction are both critical physiological processes that tend to worsen with age. Decline in olfaction can be an early indicator of neurodegenerative diseases, whereas poor sleep quality is associated with reduced physical and mental health. Given associations with aging-related health declines, we explored whether variations in sleep were associated with olfactory function among older adults. METHODS: We assessed the relationship between sleep characteristics and olfaction among 354 community-dwelling older adults...
July 26, 2017: Neuroepidemiology
https://www.readbyqxmd.com/read/28729144/sleep-efficiency-modulates-associations-between-family-stress-and-adolescent-depressive-symptoms-and-negative-affect
#14
Jessica J Chiang, Joanna J Kim, David M Almeida, Julienne E Bower, Ronald E Dahl, Michael R Irwin, Heather McCreath, Andrew J Fuligni
PURPOSE: The goal of this study was to determine whether sleep moderates the associations between family-related stress and depressive symptoms and negative affect outcomes during adolescence. We combined traditional survey measures of stress and depressive symptoms with daily assessments of stress and negative affect to examine whether sleep differentially impacts the link between chronic and acute experiences of stress and affect. METHODS: Participants were 316 adolescents from ethnically diverse backgrounds...
July 17, 2017: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/28726307/naturally-occurring-circadian-rhythm-and-sleep-duration-are-related-to-executive-functions-in-early-adulthood
#15
Liisa Kuula, Anu-Katriina Pesonen, Kati Heinonen, Eero Kajantie, Johan Gunnar Eriksson, Sture Andersson, Aulikki Lano, Jari Lahti, Dieter Wolke, Katri Räikkönen
Experimental sleep deprivation studies suggest that insufficient sleep and circadian misalignment associates with poorer executive function. It is not known whether this association translates to naturally occurring sleep patterns. A total of 512 of full-term-born members of the Arvo Ylppö Longitudinal Study [mean age = 25.3, standard deviation (SD) = 0.65] (44.3% men) wore actigraphs to define sleep duration, its irregularity and circadian rhythm (sleep mid-point) during a 1-week period (mean 6.9 nights, SD = 1...
July 20, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28724509/youth-oriented-activity-trackers-comprehensive-laboratory-and-field-based-validation
#16
John R Sirard, Brittany Masteller, Patty S Freedson, Albert Mendoza, Amanda Hickey
BACKGROUND: Commercial activity trackers are growing in popularity among adults and some are beginning to be marketed to children. There is, however, a paucity of independent research examining the validity of these devices to detect physical activity of different intensity levels. OBJECTIVES: The purpose of this study was to determine the validity of the output from 3 commercial youth-oriented activity trackers in 3 phases: (1) orbital shaker, (2) structured indoor activities, and (3) 4 days of free-living activity...
July 19, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28723844/associations-of-physical-activity-intensities-with-markers-of-insulin-sensitivity
#17
Charlotte Jelleyman, Charlotte L Edwardson, Joseph Henson, Laura J Gray, Alex V Rowlands, Kamlesh Khunti, Melanie J Davies, Thomas Yates
BACKGROUND: Objectively measured physical activity (PA) intensity has traditionally been categorised as light, moderate and vigorous using laboratory calibrated cut-points. The relative contribution of time spent across a spectrum of accelerometer-determined intensities on health outcomes is less clear. PURPOSE: To assess the relationship between objectively measured PA intensity on a continuous scale and markers of insulin sensitivity. METHODS: Participants at high risk of type 2 diabetes were recruited from primary care (Leicestershire, UK)...
July 19, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28718295/accelerometer-determined-physical-activity-and-all-cause-mortality-in-a-national-prospective-cohort-study-of-adults-post-acute-stroke
#18
Paul D Loprinzi, Ovuokerie Addoh
PURPOSE: No epidemiological study has examined the association of objectively measured physical activity with all-cause mortality among adults who have had a stroke, which was the purpose of this study. DESIGN: Prospective. SETTING: National Health and Nutrition Examination Survey 2003 to 2006. PARTICIPANTS: One hundred eighty-four patients with stroke. MEASURES: Physical activity assessed via accelerometry (ActiGraph 7164), with stroke assessed via self-report of physician diagnosis...
January 1, 2017: American Journal of Health Promotion: AJHP
https://www.readbyqxmd.com/read/28711475/the-interaction-between-subclinical-psychotic-experiences-insomnia-and-objective-measures-of-sleep
#19
Jan Cosgrave, Ross Haines, Dalena van Heugten-van der Kloet, Ross Purple, Kate Porcheret, Russell Foster, Katharina Wulff
Investigations into schizophrenia have revealed a high incidence of comorbidity with disturbed sleep and circadian timing. Acknowledging this comorbidity on a dimensional level, we tested prospectively whether subclinical psychotic symptoms are more prevalent in individuals with insomnia. An insomnia group (n=21) and controls (n=22) were recruited on their subjective sleep quality, recorded actigraphically for 3weeks and assessed for psychotic-like experiences with The Prodromal Questionnaire-16. Using multivariate Poisson regression analyses, we found that objective and subjective sleep measures interact to predict the highest risk for psychotic experiences...
July 12, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28709515/adolescents-technology-and-face-to-face-time-use-predict-objective-sleep-outcomes
#20
Royette Tavernier, Jennifer A Heissel, Michael R Sladek, Kathryn E Grant, Emma K Adam
OBJECTIVES: The present study examined both within- and between-person associations between adolescents' time use (technology-based activities and face-to-face interactions with friends and family) and sleep behaviors. We also assessed whether age moderated associations between adolescents' time use with friends and family and sleep. DESIGN: Adolescents wore an actigraph monitor and completed brief evening surveys daily for 3 consecutive days. PARTICIPANTS: Adolescents (N=71; mean age=14...
August 2017: Sleep Health
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