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https://www.readbyqxmd.com/read/28726307/naturally-occurring-circadian-rhythm-and-sleep-duration-are-related-to-executive-functions-in-early-adulthood
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
https://www.readbyqxmd.com/read/28708114/one-size-does-not-fit-all-contextualising-family-physical-activity-using-a-write-draw-show-and-tell-approach
#7
Robert J Noonan, Stuart J Fairclough, Zoe R Knowles, Lynne M Boddy
Understanding family physical activity (PA) behaviour is essential for designing effective family-based PA interventions. However, effective approaches to capture the perceptions and "lived experiences" of families are not yet well established. The aims of the study were to: (1) demonstrate how a "write, draw, show and tell" (WDST) methodological approach can be appropriate to family-based PA research, and (2) present two distinct family case studies to provide insights into the habitual PA behaviour and experiences of a nuclear and single-parent family...
July 14, 2017: Children
https://www.readbyqxmd.com/read/28707304/actigraph-measures-of-sleep-among-female-hospital-employees-working-day-or-alternating-day-and-night-shifts
#8
Jill Korsiak, Joan Tranmer, Michael Leung, Michael M Borghese, Kristan J Aronson
Sleep disturbance is common among shift workers, and may be an important factor in the effect of shift work on chronic disease development. In this cross-sectional study, we described sleep patterns of 294 female hospital workers (142 alternating day-night shift workers, 152 day workers) and determined associations between shift work and sleep duration. Rest-activity cycles were recorded with the ActiGraph GT3X+ for 1 week. Analyses were stratified by chronotype of shift workers. Using all study days to calculate average sleep duration, shift workers slept approximately 13 min less than day workers during main sleep periods, while 24-h sleep duration did not differ between day workers and shift workers...
July 14, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28705186/objectively-measured-physical-environmental-neighbourhood-factors-are-not-associated-with-accelerometer-determined-total-sedentary-time-in-adults
#9
Sofie Compernolle, Katrien De Cocker, Joreintje D Mackenbach, Femke Van Nassau, Jeroen Lakerveld, Greet Cardon, Ilse De Bourdeaudhuij
BACKGROUND: The physical neighbourhood environment may influence adults' sedentary behaviour. Yet, most studies examining the association between the physical neighbourhood environment and sedentary behaviour rely on self-reported data of either the physical neighbourhood environment and/or sedentary behaviour. The aim of this study was to investigate the associations between objectively measured physical environmental neighbourhood factors and accelerometer-determined total sedentary time in adults...
July 14, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28702313/relationship-between-objectively-measured-intensity-of-physical-activity-and-self-reported-enjoyment-of-physical-activity
#10
Thea Schwaneberg, Franziska Weymar, Sabina Ulbricht, Marcus Dörr, Wolfgang Hoffmann, Neeltje van den Berg
Physical activity is an important factor for the maintenance of health. Enjoyment of physical activity is essential to motivate persons to engage in sufficient physical activity. We examined whether self-reported enjoyment of PA is associated with objective measurement of the intensity of PA. A cardiovascular examination program was provided for individuals aged 40-75 years without a history of cardiovascular events in Greifswald, Germany between 2012 and 2013. Participants (n = 255) were asked to wear a three-axial accelerometer device (ActiGraph, GT3X +, Pensacola, Florida, USA) for 7 consecutive days...
September 2017: Preventive Medicine Reports
https://www.readbyqxmd.com/read/28682661/effects-of-school-gardening-lessons-on-elementary-school-children-s-physical-activity-and-sedentary-time
#11
Erika Rees-Punia, Alicia Holloway, David Knauft, Michael D Schmidt
BACKGROUND: Recess and physical education time continues to diminish, creating a need for additional physical activity opportunities within the school environment. The use of school gardens as a teaching tool in elementary science and math class has the potential to increase the proportion of time spent active throughout the school day. METHODS: Teachers from four elementary schools agreed to teach one math or science lesson per week in the school garden. Student physical activity time was measured with ActiGraph GT3X accelerometers on three garden days and three no garden days at each school...
July 6, 2017: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/28682660/the-impact-of-low-accelerometer-wear-time-on-the-estimates-and-application-of-sedentary-behavior-and-physical-activity-data-in-adults
#12
Ryan McGrath, Chantal A Vella, Philip W Scruggs, Mark D Peterson, Christopher J Williams, David R Paul
BACKGROUND: This investigation sought to determine how accelerometer wear 1) biased estimates of sedentary behavior (SB) and physical activity (PA), 2) affected misclassifications for meeting Physical Activity Guidelines for Americans (PAGA), and 3) impacted the results of regression models examining the association between moderate-to-vigorous physical activity (MVPA) and a clinically-relevant health outcome. METHODS: One-hundred participants (age: 20.6±7.9 years) wore an Actigraph GT3X+ accelerometer for 15...
July 6, 2017: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/28682534/objectively-assessed-sleep-variability-as-an-acute-warning-sign-of-suicidal-ideation-in-a-longitudinal-evaluation-of-young-adults-at-high-suicide-risk
#13
Rebecca A Bernert, Melanie A Hom, Naomi G Iwata, Thomas E Joiner
OBJECTIVE: Young adults attempt suicide at disproportionately high rates relative to other groups and demonstrate high rates of sleep disturbance. No study has yet prospectively evaluated disturbed sleep as an acute indicator of risk using an objective index of sleep. We investigated objective and subjective parameters of disturbed sleep as a warning sign of suicidal ideation among young adults over an acute period. METHODS: A longitudinal study across a 21-day observation period and 3 time points...
June 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28679435/associations-between-the-physical-activity-levels-of-fathers-and-their-children-at-20%C3%A2-months-3-5-and-five-years-of-age
#14
Adam D Walsh, David Crawford, Adrian J Cameron, Karen J Campbell, Kylie D Hesketh
BACKGROUND: Early childhood (under five years of age) is a critical developmental period when children's physical activity behaviours are shaped and when physical activity patterns begin to emerge. Physical activity levels track from early childhood through to adolescence with low levels of physical activity associated with poorer health. The aims of this study were to examine cross-sectional and longitudinal associations between the physical activity levels of fathers and their children at the ages of 20 months, 3...
July 5, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28678907/the-effect-of-a-self-constructed-material-on-children-s-physical-activity-during-recess
#15
Antonio Méndez-Giménez, José-Antonio Cecchini, Javier Fernández-Río
OBJECTIVE: To analyze whether an intervention supported by free play with a self-constructed material increases the level of physical activity of students during recess. METHODS: The participants were 166 children of third to sixth grade, between nine and 12 years old (average = 10.64; SS = 1.13). An experimental project was conducted with pre-test and post-test measurement, and a control group. Experimental group participants built cardboard paddles (third and fourth) and flying rings (fifth and sixth), a material they used freely for one week during recess...
June 26, 2017: Revista de Saúde Pública
https://www.readbyqxmd.com/read/28671340/physical-activity-and-myopia-in-danish-children-the-champs-eye-study
#16
Kristian Lundberg, Anne Suhr Thykjaer, Rasmus Søgaard Hansen, Anders Højslet Vestergaard, Nina Jacobsen, Ernst Goldschmidt, Rodrigo Antunes Lima, Tunde Peto, Niels Wedderkopp, Jakob Grauslund
PURPOSE: To determine associations between physical activity (PA) and myopia in Danish school children and investigate the prevalence of myopia. METHODS: This is a prospective study with longitudinal data on PA in a Danish child cohort. Physical activity (PA) was measured objectively by repeated ActiGraph accelerometer measurement four times with different intervals (1-2.5 years) at the mean ages 9.7, 11.0, 12.9 and 15.4 years. Mean intensity of PA was estimated as counts/minutes, and time spent in sedentary, light, moderate and vigorous PA was summed using defined cut-off points...
July 3, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28666428/descriptive-analysis-of-preschool-physical-activity-and-sedentary-behaviors-a-cross-sectional-study-of-3-year-olds-nested-in-the-skot-cohort
#17
Niels Christian Møller, Line B Christensen, Christian Mølgaard, Katrine T Ejlerskov, Karin A Pfeiffer, Kim F Michaelsen
BACKGROUND: Further collection of surveillance data is warranted, particularly in preschool populations, for optimizing future public health promotion strategies. This study aims to describe physical activity (PA) and sedentary behavior (SB) across different settings, including time in and out of daycare, and to determine the proportion of children complying with suggested PA recommendations in a high income country. METHODS: Valid PA was assessed in 231 children (36...
June 30, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28666177/accuracy-of-step-count-measured-by-physical-activity-monitors-the-effect-of-gait-speed-and-anatomical-placement-site
#18
Jessica J Chow, Jeanette M Thom, Michael A Wewege, Rachel E Ward, Belinda J Parmenter
INTRODUCTION: Consumer-based physical activity monitors (PAMs) are becoming increasingly popular, with multiple global organisations recommending physical activity levels that equate to 10,000 steps per day for optimal health. We therefore aimed to compare the step count of five PAMs to a visual step count to identify the most accurate monitors at varying gait speeds, along with the optimal anatomical placement site. METHODS: Participants completed 3min on a treadmill for five speeds (5...
June 21, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28662137/associations-between-quality-of-life-and-duration-and-frequency-of-physical-activity-and-sedentary-behaviour-baseline-findings-from-the-walk-2-0-randomised-controlled-trial
#19
Gregory S Kolt, Emma S George, Amanda L Rebar, Mitch J Duncan, Corneel Vandelanotte, Cristina M Caperchione, Anthony J Maeder, Rhys Tague, Trevor N Savage, Anetta Van Itallie, Nadeesha R Mawella, Wei-Wen Hsu, W Kerry Mummery, Richard R Rosenkranz
While physical and mental health benefits of regular physical activity are well known, increasing evidence suggests that limiting sedentary behaviour is also important for health. Evidence shows associations of physical activity and sedentary behaviour with health-related quality of life (HRQoL), however, these findings are based predominantly on duration measures of physical activity and sedentary behaviour (e.g., minutes/week), with less attention on frequency measures (e.g., number of bouts). We examined the association of HRQoL with physical activity and sedentary behaviour, using both continuous duration (average daily minutes) and frequency (average daily bouts≥10 min) measures...
2017: PloS One
https://www.readbyqxmd.com/read/28660120/objectively-measured-physical-activity-level-and-sedentary-behavior-in-norwegian-children-during-a-week-in-preschool
#20
Eivind Andersen, Janne Borch-Jenssen, Steinar Øvreås, Hanna Ellingsen, Kari Anne Jørgensen, Thomas Moser
Although many studies have reported on physical activity (PA) levels using accelerometers, a thorough description of the PA pattern in preschool children during their stay in the preschool, is lacking in the current literature. Furthermore, there remains a lack of understanding of the PA level and pattern in children in the lower end of the PA continuum. The first aim of this study was therefore to describe the PA pattern during a week-long stay in a preschool in all children born in 2011 (either three or four-year-olds) attending public preschools in a municipality in Norway...
September 2017: Preventive Medicine Reports
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