Decreasing Sedentary Time during Lessons Reduces Obesity in Primary School Children: The Active Movement Study

Area of Science:

• Pediatric Obesity Research
• Behavioral Science in Schools
• Public Health Interventions

Background:

• Traditional school-based exercise programs for childhood obesity face challenges with resource intensity and long-term behavior change.
• This study explored an alternative strategy focusing on reducing sedentary time rather than increasing physical activity.

Purpose of the Study:

• To investigate the impact of reducing sedentary behaviors on physical activity levels and obesity in primary school children.
• To assess the effectiveness of the Active Movement Intervention in a school setting.

Main Methods:

• A cluster-controlled intervention study involving 30 UK primary schools.
• Data collected included the Physical Activity Questionnaire for Children (PAQ-C) and waist-to-height ratio (WTHR) measurements.
• Statistical analyses included ANCOVAs and multiple linear regressions to evaluate intervention effects.

Main Results:

• The intervention group showed an 8% reduction in waist-to-height ratio (WTHR) and a 10% increase in sport participation.
• Physical Activity Questionnaire for Children (PAQ-C) measures improved in the intervention group, though without significant group*time interaction.
• Reductions in WTHR were predicted by intervention group and higher baseline WTHR, independent of socioeconomic status, age, or gender.

Conclusions:

• Reducing sedentary behavior during school hours is an effective strategy for combating childhood obesity in overweight primary school children.
• The intervention's effectiveness across diverse demographics suggests broad applicability regardless of socioeconomic status, age, or gender.