The associations of physical activity, sedentary time, and sleep with V˙O2max in trained and untrained children and adolescents: A novel five-part compositional analysis

The benefits of physical activity (PA) and the negative impacts of sedentary time (SED) on both short- and long-term health in youth are well established. However, uncertainty remains about how PA and SED jointly influence maximal oxygen uptake ([Formula: see text]). Therefore, the aim of this study...

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Bibliographic Details
Published in:PloS one 2023, Vol.18 (3), p.e0275557
Main Authors: Runacres, Adam, MacKintosh, Kelly A, Chastin, Sebastien, McNarry, Melitta A
Format: Article
Language:English
Subjects:
Accelerometers
Accelerometry
Adolescent
Adolescents
Algorithms
Athletes
Behavior
Biology and Life Sciences
Child
Children & youth
Composition
Exercise
Female
Girls
Hip
Humans
Medicine and Health Sciences
Metabolism
Oxygen
Oxygen consumption
Oxygen uptake
Pediatrics
People and Places
Physical activity
Physical fitness
Physiology
Regression models
Sedentary Behavior
Sleep
Social Sciences
Teenagers
Valproic acid
Youth
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Summary:The benefits of physical activity (PA) and the negative impacts of sedentary time (SED) on both short- and long-term health in youth are well established. However, uncertainty remains about how PA and SED jointly influence maximal oxygen uptake ([Formula: see text]). Therefore, the aim of this study was to determine the joint influence of PA and SED on [Formula: see text] using compositional analyses. 176 adolescents (84 girls, 13.8 ± 1.8 years) completed an incremental ramp test and supramaximal validation bout on a cycle ergometer, with PA and SED recorded for seven consecutive days on the right hip using a ActiGraph GT3X accelerometer. Time spent in Sleep, SED, light, moderate and vigorous PA was analysed using a compositional linear regression model. Compositions with 10 minutes more time in vigorous PA (> 27.5 mins⋅day-1) compared to the average 17.5 mins⋅day-1 were associated with a + 2.9% - 11.1% higher absolute and scaled [Formula: see text] whilst compositions with less (> -10 mins⋅day-1) VPA were associated with a reduced absolute and allometrically scaled [Formula: see text] (-4.6% - 24.4%). All associations were irrespective of sex, maturity, and training status. The proportion of time spent sedentary had little impact on absolute and scaled [Formula: see text] (0.01-1.98%). These findings therefore highlight that intensity of PA may be of greater importance for increases in [Formula: see text] than reductions in SED and should be incorporated into future intervention designs.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0275557