Effects of Physical Exercise Motives on Physical Health and Aerobic Fitness of Teenagers

Background: A good level of physical fitness helps teenagers maintain a good state in daily study and life and enables them to cope well with emergencies. We aimed to explore the influences of physical exercise motives on the physical health and aerobic fitness of teenagers. Methods: A total of 982 teenagers aged between 13 and 16 years in the four districts of Guangzhou City, China from January to December 2019 were selected randomly with the assistance of communities. Their physical exercise motives and exercise behaviors were investigated using a questionnaire survey, and their physical health indexes and aerobic fitness were assessed. The relationships of physical exercise motives and behaviors with physical health and aerobic fitness were analyzed. Results: Teenagers who have higher physical health scores show significantly increasing trends in their scores in exercise motives and different dimensions, exercise behaviors, and aerobic fitness scores (P<0.05). Physical exercise motives show significant correlations with exercise behaviors, physical health, and aerobic fitness. Moreover, exercise behaviors show significantly positive correlations with physical health and aerobic fitness (P<0.05). Physical exercise motives have a positive effect on exercise behaviors, physical health, and aerobic activities, and exercise behaviors have a positive effect on physical health and aerobic activities (P<0.05). Conclusion: The physical exercise motives of teenagers have positive and prediction effects on exercise behaviors, physical health, and aerobic fitness. Exciting physical exercise motives can promote the physical exercise behaviors of teenagers and improve their physical health and aerobic fitness.