Does physical activity influence health behavior, mental health, and psychological resilience under the moderating role of quality of life?

This study investigates the complex interplay between physical activity (PA), health behavior (HeB), mental health (MeH), and psychological resilience (PsR). While the benefits of exercise are well-documented, this research specifically examines how an individual's perceived quality of life (QOL) moderates the relationship between these health-related variables. The authors aim to provide a clearer understanding of how consistent physical activity contributes to a holistic sense of well-being.

The researchers conducted a cross-sectional online survey in China between April and October 2023. Using convenience sampling, they collected data from 743 participants aged 21 and older who were already engaged in some form of physical activity. The study utilized structural equation modeling (SEM) via SmartPLS 4.0 to test a conceptual model that included both direct effects and the moderating role of QOL across twelve hypothesized relationships.

The analysis confirmed that physical activity has a direct, positive impact on health behavior, mental health, and psychological resilience. Furthermore, the study found that health behaviors themselves are positively associated with better mental health and resilience. When testing the moderating role of quality of life, the researchers found that QOL significantly influences the strength of these relationships in four out of six tested pathways, suggesting that an individual's overall life satisfaction acts as a critical filter through which the benefits of physical activity are realized.

This research underscores that physical activity is not merely a tool for physical fitness but a foundational element of psychological and behavioral health. By identifying quality of life as a key moderator, the study suggests that health interventions should not focus solely on exercise frequency but also on improving the broader life circumstances of individuals to maximize the psychological and behavioral benefits of an active lifestyle.