Abstract
BackgroundThere is a lack of evidence of the complicated pathways of underlying determinants in the phases of physical activity. The purpose of this study was to evaluate simultaneously a set of potential determinants on the initiation and maintenance phases of leisure-time physical activity (LTPA).MethodsThe longitudinal data of 54,359 Korean adults aged 40–69 years from the Health Examinees study were used. The median follow-up duration was 4.2 years. The self-reported durations per week of LTPA was repeatedly assessed. Based on previous longitudinal studies, the potential determinants were selected, and hypothetical models were constructed that consider the complex associations between the determinants. The standardized coefficients for direct and indirect effects were estimated using path analysis to differentiate contributions of mediation from the total effects.ResultsIn the total population, age, education, chronic diseases, smoking, depression symptoms, and self-rated health were significantly associated with both initiation and maintenance phases. Income (B = 0.025) and social supports (B = 0.019) were associated only with the initiation phase. Waist-to-hip ratio (B = −0.042) and stress (B = −0.035) were associated only with the maintenance phase. After stratifying by sex, the significant effects of education, chronic diseases, and smoking were found only in men. The initiation phase-specific effects of income and social supports and the maintenance phase-specific effects of stress were found only in women. It was estimated that indirect effects contributed approximately 15% of the total effect.ConclusionThe findings suggested that there were initiation- or maintenance-specific determinants of leisure-time physical activity according to sex.
Highlights
Participation in regular physical activity is known to be associated with health benefits.[1,2,3] According to global recommendations on physical activity for health,[4] it is suggested that at least 150 minutes of moderate intensity or 75 minutes of vigorous intensity physical activity per week be performed
The purpose of this study was to construct an a priori hypothetical model of potential determinants based on previous literature, and to evaluate the direct and indirect contributions of potential determinants to the initiation and maintenance of leisure-time physical activity (LTPA), using a longitudinal design
Between both levels of physical activity, most potential determinants on LTPA were consistently associated with existing evidence as presented in eTable 1
Summary
Participation in regular physical activity is known to be associated with health benefits.[1,2,3] According to global recommendations on physical activity for health,[4] it is suggested that at least 150 minutes of moderate intensity or 75 minutes of vigorous intensity physical activity per week be performed. In recent decades, insufficient physical activity has become a global public health problem that has not improved.[5] it is important to identify the factors underlying changes in physical activity, called determinants, and to encourage people to participate in physical activity. There is a lack of evidence of the complicated pathways of underlying determinants in the phases of physical activity. The purpose of this study was to evaluate simultaneously a set of potential determinants on the initiation and maintenance phases of leisure-time physical activity (LTPA)
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