The multivariate physical activity signature associated with metabolic health in children
ISPAH ePoster Library. Aadland E. 10/15/18; 225400; 549
Prof. Eivind Aadland
Prof. Eivind Aadland
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Abstract
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Abstract Background It is heavily debated which intensities of physical activity (including sedentary time) that are most influential for metabolic health in children. A fundamental limitation to current evidence for this relationship is the reliance on analytic approaches that cannot handle collinear variables. We therefore used multivariate pattern analysis to determine the physical activity signature related to metabolic health in children across the whole spectrum of physical activity intensities.Methods A sample of 841 Norwegian children (age 10.2 ± 0.3 years) provided valid data on accelerometry (ActiGraph GT3X+) and several indices of metabolic health (aerobic fitness, abdominal fatness, insulin sensitivity, lipid metabolism, blood pressure) that were used to create a composite metabolic health score. We created 16 physical activity variables covering the whole intensity spectrum (from 0–100 to ≥ 8000 counts per minute) and used multivariate pattern analysis to analyze the data.Results Physical activity intensities in the vigorous range (5000–7000 counts per minute) were most strongly associated with metabolic health. Moderate intensity physical activity was weakly related to health, and sedentary time and light physical activity were not related to health.Conclusion This study is the first to determine the multivariate physical activity signature related to metabolic health in children across the whole intensity spectrum. This novel approach shows that vigorous physical activity is strongest related to metabolic health. We recommend future studies adapt a multivariate analytic approach to further develop the field of physical activity epidemiology. External funding details The Research Council of Norway and the Gjensidige Foundation
Abstract Background It is heavily debated which intensities of physical activity (including sedentary time) that are most influential for metabolic health in children. A fundamental limitation to current evidence for this relationship is the reliance on analytic approaches that cannot handle collinear variables. We therefore used multivariate pattern analysis to determine the physical activity signature related to metabolic health in children across the whole spectrum of physical activity intensities.Methods A sample of 841 Norwegian children (age 10.2 ± 0.3 years) provided valid data on accelerometry (ActiGraph GT3X+) and several indices of metabolic health (aerobic fitness, abdominal fatness, insulin sensitivity, lipid metabolism, blood pressure) that were used to create a composite metabolic health score. We created 16 physical activity variables covering the whole intensity spectrum (from 0–100 to ≥ 8000 counts per minute) and used multivariate pattern analysis to analyze the data.Results Physical activity intensities in the vigorous range (5000–7000 counts per minute) were most strongly associated with metabolic health. Moderate intensity physical activity was weakly related to health, and sedentary time and light physical activity were not related to health.Conclusion This study is the first to determine the multivariate physical activity signature related to metabolic health in children across the whole intensity spectrum. This novel approach shows that vigorous physical activity is strongest related to metabolic health. We recommend future studies adapt a multivariate analytic approach to further develop the field of physical activity epidemiology. External funding details The Research Council of Norway and the Gjensidige Foundation
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