Wangsan Kampanat, Panumasvivat Jinjuta, Usanakul Thiti, Sirivoravith Vorapat, Rojanachai Supanut, Zheng Natchaphol, Boontan Chonlathee, Sapbamrer Ratana
Department of Community Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
Environmental and Occupational Medicine Excellence Center (EnOMEC), Department of Community Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
Front Public Health. 2024 Nov 20;12:1488115. doi: 10.3389/fpubh.2024.1488115. eCollection 2024.
PM2.5 poses significant health risks with prolonged exposure, potentially reducing physical activity levels. This study aims to investigate the impact of ambient PM2.5 levels on physical activity engagement among individuals.
The retrospective cross-sectional study involved 423 students from Chiang Mai University residing there between January and August 2023. We used the validated Thai version of the International Physical Activity Questionnaire to assess physical activity intensity during high and low pollution periods. Individuals who engage in at least 150 min of moderate-intensity or 75 min of high-intensity physical activity per week meet the recommended physical activity guidelines. Multiple logistic regression analyzed air pollution's relation to physical activity intensity, and Cochran's -test compared activity levels across pollution periods.
Recommended physical activity prevalence was 76.36% during high PM2.5 and 71.63% during low PM2.5 periods, it showed higher physical activity during polluted periods ( = 0.049). Individuals' behavior showed a preference for indoor exercise ( < 0.001), consistent PM2.5 level checks ( < 0.001) during high PM2.5 periods. Internal motivation significantly associated with recommended physical activity in both low and high PM2.5 periods (aOR = 2.46, 95% CI = 1.14 - 5.27 and aOR = 4.00, 95% CI = 1.84 - 8.70, respectively). The outdoor exercise significantly associated with the recommended physical activity only during the low PM2.5 period (aOR = 1.72, 95% CI = 1.03 - 2.87).
University students showed increased physical activity intensity during high PM2.5 periods, favoring indoor exercise in polluted environments. This behavioral shift highlights environmental pollution's influence on lifestyle choices and cornering on health outcomes. Government and university support is crucial for implementing measures to mitigate PM2.5 pollution, including promoting safe indoor exercise, enhancing pollution control measures, and developing air quality monitoring and warning systems.
长期接触细颗粒物2.5（PM2.5）会对健康构成重大风险，可能会降低身体活动水平。本研究旨在调查环境中PM2.5水平对个体身体活动参与情况的影响。
这项回顾性横断面研究涉及2023年1月至8月期间居住在清迈大学的423名学生。我们使用经过验证的泰语版国际身体活动问卷，评估高污染期和低污染期的身体活动强度。每周进行至少150分钟中等强度或75分钟高强度身体活动的个体符合推荐的身体活动指南。多元逻辑回归分析空气污染与身体活动强度的关系， Cochr an检验比较不同污染期的活动水平。
PM2.5浓度高时推荐的身体活动流行率为76.36%，PM2.5浓度低时为71.63%，污染期的身体活动水平更高（P = 0.049）。个体行为表现出对室内运动的偏好（P < 0.001），在PM2.5浓度高时会持续检查PM2.5水平（P < 0.001）。内在动机在PM2.5浓度低和高时均与推荐的身体活动显著相关（调整优势比分别为2.46，95%置信区间为1.14 - 5.27和调整优势比为4.00，95%置信区间为1.84 - 8.70）。仅在PM2.5浓度低时，户外运动与推荐的身体活动显著相关（调整优势比为1.72，95%置信区间为1.03 - 2.87）。
大学生在PM2.5浓度高时身体活动强度增加，在污染环境中更倾向于室内运动。这种行为转变凸显了环境污染对生活方式选择以及健康结果的影响。政府和大学的支持对于实施减轻PM2.5污染的措施至关重要，包括推广安全的室内运动、加强污染控制措施以及开发空气质量监测和预警系统。
