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08:45
Assessment of Physical Activity Intensity with Accelerometers and Oxygen Consumption
Published on: June 20, 2025
548
Are preschool children active enough in Shanghai: an accelerometer-based cross-sectional study
Minghui Quan1, Hanbin Zhang2, Jiayi Zhang3
1School of Kinesiology, Shanghai University of Sport, Shanghai, China.
BMJ Open
|April 28, 2019
Summary
Physical activity levels in Shanghai preschool children are insufficient, with many not meeting recommendations for total physical activity (TPA). Targeted interventions are needed to improve children's health and well-being.
Area of Science:
- Pediatrics
- Public Health
- Sports Science
Background:
- Physical activity (PA) is crucial for preschool children's health.
- Limited data exists on PA levels in Chinese preschool populations.
- Objective assessment of PA is needed to inform public health strategies.
Purpose of the Study:
- To objectively assess physical activity (PA) levels in Shanghai preschool children.
- To compare PA levels against established age-specific recommendations.
- To identify potential areas for PA improvement in this demographic.
Main Methods:
- A cross-sectional study involving 303 preschool children in Shanghai.
- Objective PA assessment using ActiGraph GT3X+ accelerometers over seven days.
- Inclusion criteria required a minimum of 480 minutes of daily wear time.
Main Results:
- Children averaged 70.9 min/day of moderate-to-vigorous PA (MVPA) and 168.0 min/day of total PA (TPA).
- Boys exhibited higher MVPA and TPA than girls.
- Only 72.9% met MVPA recommendations, and 35.3% met TPA recommendations.
Conclusions:
- PA levels among Shanghai preschool children are suboptimal.
- Significant opportunities exist to enhance PA engagement in this age group.
- Findings highlight the need for interventions to promote physical activity.
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