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Objectively measured daily physical activity related to aerobic fitness in young children.

Dencker, Magnus LU ; Bugge, Anna; Hermansen, Bianca and Andersen, Lars B (2010) In Journal of Sports Sciences 28. p.139-145
Abstract
The purpose of this study was to investigate by direct measurement the cross-sectional relationship between accelerometer-measured physical activity and peak oxygen uptake ([Vdot]O(2peak): ml . min(-1) . kg(-1)), in a population-based cohort of young children, since such data are scarce. The study included 468 children (246 boys, 222 girls) aged 6.7 +/- 0.4 years, recruited from a population-based cohort. Peak oxygen uptake was measured by indirect calorimetry during a maximal treadmill exercise test. Physical activity was assessed by accelerometers over a 4-day period. Minutes of sedentary, light, moderate, moderate-to-vigorous, and vigorous activity per day were calculated. Mean counts per minute were considered to reflect total physical... (More)
The purpose of this study was to investigate by direct measurement the cross-sectional relationship between accelerometer-measured physical activity and peak oxygen uptake ([Vdot]O(2peak): ml . min(-1) . kg(-1)), in a population-based cohort of young children, since such data are scarce. The study included 468 children (246 boys, 222 girls) aged 6.7 +/- 0.4 years, recruited from a population-based cohort. Peak oxygen uptake was measured by indirect calorimetry during a maximal treadmill exercise test. Physical activity was assessed by accelerometers over a 4-day period. Minutes of sedentary, light, moderate, moderate-to-vigorous, and vigorous activity per day were calculated. Mean counts per minute were considered to reflect total physical activity. Pearson correlation coefficients indicated a weak relationship between daily physical activity variables and [Vdot]O(2peak) in boys (r = 0.15-0.28, P < 0.05), with the exception of time in sedentary and light activity, which was not related to [Vdot]O(2peak). None of the daily physical activity variables were related to [Vdot]O(2peak) in girls, with the exception of a very weak relationship for moderate activity (r = 0.14, P < 0.05). Multiple regression analyses indicated that the various physical activity variables explained between 2 and 8% of the variance in [Vdot]O(2peak) in boys. In this population-based cohort, most daily activity variables were positively related to aerobic fitness in boys, whereas less clear relationships were observed in girls. Our finding that physical activity was only uniformly related to aerobic fitness in boys partly contradicts previous studies in older children and adolescents. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Sports Sciences
volume
28
pages
139 - 145
publisher
Taylor & Francis
external identifiers
  • wos:000274620700003
  • pmid:20035491
  • scopus:77949360216
ISSN
0264-0414
DOI
10.1080/02640410903460726
language
English
LU publication?
yes
id
f000841f-9eb1-4853-85f2-0a93c55404d8 (old id 1523294)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/20035491?dopt=Abstract
date added to LUP
2010-01-11 16:33:00
date last changed
2018-05-29 12:31:30
@article{f000841f-9eb1-4853-85f2-0a93c55404d8,
  abstract     = {The purpose of this study was to investigate by direct measurement the cross-sectional relationship between accelerometer-measured physical activity and peak oxygen uptake ([Vdot]O(2peak): ml . min(-1) . kg(-1)), in a population-based cohort of young children, since such data are scarce. The study included 468 children (246 boys, 222 girls) aged 6.7 +/- 0.4 years, recruited from a population-based cohort. Peak oxygen uptake was measured by indirect calorimetry during a maximal treadmill exercise test. Physical activity was assessed by accelerometers over a 4-day period. Minutes of sedentary, light, moderate, moderate-to-vigorous, and vigorous activity per day were calculated. Mean counts per minute were considered to reflect total physical activity. Pearson correlation coefficients indicated a weak relationship between daily physical activity variables and [Vdot]O(2peak) in boys (r = 0.15-0.28, P &lt; 0.05), with the exception of time in sedentary and light activity, which was not related to [Vdot]O(2peak). None of the daily physical activity variables were related to [Vdot]O(2peak) in girls, with the exception of a very weak relationship for moderate activity (r = 0.14, P &lt; 0.05). Multiple regression analyses indicated that the various physical activity variables explained between 2 and 8% of the variance in [Vdot]O(2peak) in boys. In this population-based cohort, most daily activity variables were positively related to aerobic fitness in boys, whereas less clear relationships were observed in girls. Our finding that physical activity was only uniformly related to aerobic fitness in boys partly contradicts previous studies in older children and adolescents.},
  author       = {Dencker, Magnus and Bugge, Anna and Hermansen, Bianca and Andersen, Lars B},
  issn         = {0264-0414},
  language     = {eng},
  pages        = {139--145},
  publisher    = {Taylor & Francis},
  series       = {Journal of Sports Sciences},
  title        = {Objectively measured daily physical activity related to aerobic fitness in young children.},
  url          = {http://dx.doi.org/10.1080/02640410903460726},
  volume       = {28},
  year         = {2010},
}