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Effects of accelerometer-based sedentary time and physical activity on DEXA-measured fat mass in 6059 children

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  • Andrew O. Agbaje

    (University of Eastern Finland
    University of Exeter)

  • Wei Perng

    (University of Colorado Anschutz Medical Campus)

  • Tomi-Pekka Tuomainen

    (University of Eastern Finland)

Abstract

Globally, childhood obesity is on the rise and the effect of objectively measured movement behaviour on body composition remains unclear. Longitudinal and causal mediation relationships of accelerometer-based sedentary time (ST), light physical activity (LPA), and moderate-to-vigorous physical activity (MVPA) with dual-energy X-ray absorptiometry-measured fat mass were examined in 6059 children aged 11 years followed-up until age 24 years from the Avon Longitudinal Study of Parents and Children (ALSPAC), UK birth cohort. Over 13-year follow-up, each minute/day of ST was associated with 1.3 g increase in fat mass. However, each minute/day of LPA was associated with 3.6 g decrease in fat mass and each minute/day of MVPA was associated with 1.3 g decrease in fat mass. Persistently accruing ≥60 min/day of MVPA was associated with 2.8 g decrease in fat mass per each minute/day of MVPA, partly mediated by decrease insulin and low-density lipoprotein cholesterol. LPA elicited similar and potentially stronger fat mass-lowering effect than MVPA and thus may be targeted in obesity and ST prevention in children and adolescents, who are unable or unwilling to exercise.

Suggested Citation

  • Andrew O. Agbaje & Wei Perng & Tomi-Pekka Tuomainen, 2023. "Effects of accelerometer-based sedentary time and physical activity on DEXA-measured fat mass in 6059 children," Nature Communications, Nature, vol. 14(1), pages 1-17, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-43316-w
    DOI: 10.1038/s41467-023-43316-w
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