Open AccessJournal Article
Objectively Measured Physical Activity and Fat Mass in a Large Cohort of Children
Andy R Ness,Sam D Leary,Calum Mattocks,Steven N. Blair,John J. Reilly,Jonathan C. K. Wells,Sue Ingle,Kate Tilling,George Davey Smith,Chris Riddoch +9 more
TL;DR: In this paper, the authors carried out a cross sectional analysis on 5,500 12-year-old children enrolled in the Avon Longitudinal Study of Parents and Children.
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Abstract: Previous studies have been unable to characterise the association between physical activity and obesity, possibly because most relied on inaccurate measures of physical activity and obesity. We carried out a cross sectional analysis on 5,500 12-year-old children enrolled in the Avon Longitudinal Study of Parents and Children. Total physical activity and minutes of moderate and vigorous physical activity (MVPA) were measured using the Actigraph accelerometer. Fat mass and obesity (defined as the top decile of fat mass) were measured using the Lunar Prodigy dual x-ray emission absorptiometry scanner. We found strong negative associations between MVPA and fat mass that were unaltered after adjustment for total physical activity. We found a strong negative dose-response association between MVPA and obesity. The odds ratio for obesity in adjusted models between top and the bottom quintiles of minutes of MVPA was 0.03 (95% confidence interval [CI] 0.01-0.13, p-value for trend <0.0001) in boys and 0.36 (95% CI 0.17-0.74, p-value for trend = 0.006) in girls. We demonstrated a strong graded inverse association between physical activity and obesity that was stronger in boys. Our data suggest that higher intensity physical activity may be more important than total activity.
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Citations
Systematic review of the health benefits of physical activity and fitness in school-aged children and youth
Ian Janssen,Allana G. LeBlanc +1 more
TL;DR: A systematic review of studies examining the relation between physical activity, fitness, and health in school-aged children and youth found that even modest amounts of physical activity can have health benefits in high-risk youngsters (e.g., obese).
Correlates of physical activity: why are some people physically active and others not?
Adrian Bauman,Rodrigo Siqueira Reis,Rodrigo Siqueira Reis,James F. Sallis,Jonathan C. K. Wells,Ruth J. F. Loos,Ruth J. F. Loos,Brian W. Martin +7 more
TL;DR: In this article, a broad view of health behaviour causation, with the social and physical environment included as contributors to physical inactivity, particularly those outside the health sector, such as urban planning, transportation systems, and parks and trails, is presented.
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Systematic review of the relationships between objectively measured physical activity and health indicators in school-aged children and youth.
Veronica J. Poitras,Casey E Gray,Michael M. Borghese,Valerie Carson,Jean-Philippe Chaput,Ian Janssen,Peter T. Katzmarzyk,Russell R. Pate,Sarah Connor Gorber,Michelle E. Kho,Margaret Sampson,Mark S. Tremblay +11 more
TL;DR: The findings continue to support the importance of at least 60 min/day of MVPA for disease prevention and health promotion in children and youth, but also highlight the potential benefits of LPA and total PA.
Moderate to vigorous physical activity and sedentary time and cardiometabolic risk factors in children and adolescents
TL;DR: Higher MVPA time by children and adolescents was associated with better cardiometabolic risk factors regardless of the amount of sedentary time, in the combined analyses.
The ABC of physical activity for health: A consensus statement from the British Association of Sport and Exercise Sciences
Gary O'Donovan,Anthony J. Blazevich,Colin Boreham,Ashley R Cooper,Helen Crank,Ulf Ekelund,Kenneth R Fox,Paul Gately,Billie Giles-Corti,Jason M.R. Gill,Mark Hamer,Ian D. McDermott,Marie H. Murphy,Nanette Mutrie,John J. Reilly,John M. Saxton,Emmanuel Stamatakis +16 more
TL;DR: Physical activity is beneficial to health with or without weight loss, but adults who find it difficult to maintain a normal weight should probably be encouraged to reduce energy intake and minimize time spent in sedentary behaviours to prevent further weight gain.
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Extracurricular physical activity participation modifies the association between high TV watching and low bone mass
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Clustered randomised controlled trial of two education interventions designed to increase physical activity and well-being of secondary school students: the MOVE Project
Peter Tymms,Sarah Curtis,Ash C. Routen,Katie Thomson,David Bolden,Susan Bock,Christine E. Dunn,Ashley R Cooper,Julian Elliott,Helen J Moore,Carolyn Summerbell,Paul A. Tiffin,Adetayo Kasim +12 more
TL;DR: Findings suggest that the 2 school-based interventions did not modify levels of physical activity or well-being within the period monitored, and change in physical activity may require more comprehensive individual behavioural intervention and/or more system-based efforts to address wider environmental influences.
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