Does physical exercise inhibit smoking behavior? Evidence from the China General Social Survey

Area of Science:

• Public Health
• Behavioral Science
• Sociology

Background:

• Physical exercise offers numerous health benefits, but its impact on smoking behavior and underlying mechanisms requires further investigation.
• Understanding the social benefits of exercise is crucial for developing effective public health initiatives and promoting societal well-being.
• Smoking remains a significant public health concern, necessitating research into novel intervention strategies.

Purpose of the Study:

• To examine the association between physical exercise and smoking behavior in a representative Chinese population.
• To investigate the mediating roles of mental health and social support in the relationship between exercise and smoking.
• To explore the moderating effect of individual income on the exercise-smoking association.

Main Methods:

• Cross-sectional observational study using the 2021 China General Social Survey (CGSS) dataset.
• Analysis of 2,373 valid observations using Ordinary Least Squares (OLS) regression models.
• Propensity score matching (PSM) was employed for endogeneity checks, alongside ordered probit and logit specifications for robustness.

Main Results:

• A significant positive association was found between physical exercise and reduced smoking (β=0.0276), consistent across sensitivity and endogeneity analyses.
• Heterogeneity in the association was observed across age groups (significant for middle-aged and younger adults) and genders (stronger for men).
• Mental health improvements and increased social support were identified as significant mediators, while higher income positively moderated the exercise-smoking link.

Conclusions:

• Physical exercise is associated with decreased smoking, mediated by enhanced mental health and social support.
• Findings provide practical implications for public health policy and tobacco control interventions in China.
• The study highlights the social and psychological effects of exercise but is limited by its cross-sectional, self-reported, and country-specific nature.