Validation of a self-reported physical activity questionnaire for schoolchildren

Area of Science:

• Pediatric exercise science
• Physical activity measurement
• Childhood health research

Background:

• Limited data exists on validating young children's self-reported physical activity.
• This study addresses the need to assess the accuracy of a self-report questionnaire for measuring physical activity in children.

Purpose of the Study:

• To evaluate the validity of a self-reported physical activity questionnaire for schoolchildren.
• To compare self-reported physical activity data with objective measurements.

Main Methods:

• 34 elementary school boys (4th-6th grade) completed a physical activity questionnaire.
• Objective physical activity was monitored for 7 days using a Lifecorder and Actiwatch.
• Physical activity index (total energy expenditure/basal metabolic rate) was calculated.

Main Results:

• Self-reported participation in sports clubs correlated with higher physical activity index and energy expenditure.
• Vigorous physical activity intensity reported by children was associated with a significantly higher physical activity index.
• High frequency of physical activity and preference for physical activity showed significant associations with objective measures.

Conclusions:

• Children's self-reported physical activity aligns with objective data.
• The self-reported questionnaire is a valid tool for assessing physical activity levels in school settings.