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Sedentary behavior patterns and adiposity in children: a study based on compositional data analysis.

Aleš Gába1, Željko Pedišić2, Nikola Štefelová3

  • 1Faculty of Physical Culture, Palacký University Olomouc, Olomouc, Czech Republic. ales.gaba@upol.cz.

BMC Pediatrics
|April 4, 2020
PubMed
Summary
This summary is machine-generated.

Reducing sedentary behavior (SB) in middle-length bouts is key for childhood obesity prevention. Increasing moderate-to-vigorous physical activity (MVPA) or short activity breaks instead of middle SB bouts can lower adiposity markers.

Keywords:
AccelerometryBody mass indexChild behaviorPediatric obesitySedentary behavior

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Area of Science:

  • Pediatrics
  • Public Health
  • Kinesiology

Background:

  • Childhood obesity is a growing concern, with sedentary behavior (SB) playing a significant role.
  • Understanding the nuances of SB patterns, not just total time, is crucial for effective interventions.
  • Individual differences in sedentary patterns require consideration for obesity development.

Purpose of the Study:

  • To examine associations between different sedentary behavior (SB) patterns and adiposity in children.
  • To investigate how reallocating time between sedentary bouts of varying durations and physical activity impacts adiposity.
  • To apply compositional data analysis for a novel approach to SB and obesity research.

Main Methods:

  • Cross-sectional analysis of 425 children (7-12 years old).
  • Waking behaviors assessed via ActiGraph accelerometers; adiposity measured using bioimpedance.
  • Compositional regression and isotemporal substitution models used to analyze SB patterns and adiposity.

Main Results:

  • Time in middle-duration sedentary bouts (10-29 min) was associated with higher fat mass percentage and visceral adipose tissue.
  • No significant associations were found for short (<10 min) or long (≥30 min) sedentary bouts.
  • Substituting middle sedentary time with moderate-to-vigorous physical activity (MVPA) or short sedentary bouts reduced adiposity markers.

Conclusions:

  • Increasing MVPA at the expense of middle-duration sedentary bouts can improve children's adiposity status.
  • Replacing middle sedentary bouts with short sedentary bouts (i.e., more frequent breaks) may also benefit adiposity.
  • Findings support targeted interventions to prevent and manage childhood obesity by modifying SB patterns.