The Effect of Outdoor and Indoor Group Exercise Classes on Psychological Stress in College Students: A Pilot Study with Randomization

Green space attributes and their impact on perceived stress in Poland

Inconsistent findings and limited research from various countries highlight the need for further investigation of the relationship between Satisfaction with Green Space Attributes (SGSA) and Perceived Stress (PS) levels, which is crucial for informing urban planning strategists to improve residents' mental health using green areas. Presented study explored these relationships and differences in greenery usage and preferences in connection with self-perceived stress levels in the study area of post-socialist cities and other settlements units in Poland-the country belonging to the former block of Socialist Countries of People's Democracy (specific type of urbanism and influence on mentality of residents). Data collected in 2022 via Computer-Assisted Web Interviewing (CAWI) covered demographics, green space utilization, SGSA, and PS levels using the Perceived Stress Scale (PSS-10). Statistical analyses, including Kruskal-Wallis rank ANOVA, Mann-Whitney U-test and multiple regression, revealed that lower PS levels were correlated with higher SGSA across various greenery elements. Individuals with low stress levels spent more time in green spaces for leisure activities, mainly walking. However, satisfaction with greenery decreased with increasing stress levels, especially regarding the decrease of cleanliness, aesthetics and greenery amount. Multiple regression identified significant predictors of stress levels, such as health, greenery aesthetics satisfaction, income, and green area accessibility for children. The study underscores the importance of well-designed, diversified green infrastructure to enhance residents' mental well-being. Accessible, well-maintained green spaces creating a network within urban environments are crucial for stress reduction. It is a guideline for policymakers and urban planners to create continuous green infrastructure consisting of various size and character green areas/elements and this green network should be as dense as possible, occupying every possible place.

Impact of ambient air pollution on physical activity engagement among university students

Introduction

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.

Methods

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 Q-test compared activity levels across pollution periods.

Results

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 (p = 0.049). Individuals' behavior showed a preference for indoor exercise (p < 0.001), consistent PM2.5 level checks (p < 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).

Conclusion

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.