Should we be looking at the forest or the trees? Overall psychological need satisfaction and individual needs as predictors of physical activity
Brunet, Jennifer; Gunnell, Katie E.; Teixeira, Pedro; Sabiston, Catherine M.; Bélanger, Mathieu
SubjectPsychological needs satisfaction
Abstract: The objectives of this study were twofold: (a) examine if measures designed to assess satisfaction of competence, autonomy, and relatedness needs in the physical activity domain can represent both general and specific needs satisfaction, and (b) assess if the specific needs are associated with concurrent moderate-to-vigorous intensity physical activity (MVPA) participation (Time 1) and MVPA participation 4 months later (Time 2), beyond general psychological needs satisfaction (PNS). Data from 544 adolescents (Mage=14.12 years, SD=.64) were analyzed. A bifactor model specifying a general PNS and three specific needs factors provided a good fit to the data. Extending the model to predict Time 1 and Time 2 MVPA participation also provided a good fit to the data. General PNS and specific needs had unique and empirically distinguishable associations with MVPA participation. The bifactor operationalization of PNS has implications for future research. Specifically, it provides a framework to delineate common and distinctive antecedents and outcomes of general PNS and specific needs.
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