A daily process analysis of intentions and physical activity in college students

David E. Conroy, Steriani Elavsky, Shawna E. Doerksen, Jaclyn P. Maher

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

Social-cognitive theories, such as the theory of planned behavior, posit intentions as proximal influences on physical activity (PA). This paper extends those theories by examining within-person variation in intentions and moderate-to-vigorous physical activity (MVPA) as a function of the unfolding constraints in people's daily lives (e.g., perceived time availability, fatigue, soreness, weather, overeating). College students (N = 63) completed a 14-day diary study over the Internet that rated daily motivation, contextual constraints, and MVPA. Key findings from multilevel analyses were that (1) between-person differences represented 46% and 33% of the variability in daily MVPA intentions and behavior, respectively; (2) attitudes, injunctive norms, self-efficacy, perceptions of limited time availability, and weekend status predicted daily changes in intention strength; and (3) daily changes in intentions, perceptions of limited time availability, and weekend status predicted day-to-day changes in MVPA. Embedding future motivation and PA research in the context of people's daily lives will advance understanding of individual PA change processes.

Original languageEnglish (US)
Pages (from-to)493-502
Number of pages10
JournalJournal of Sport and Exercise Psychology
Volume35
Issue number5
DOIs
StatePublished - 2013

All Science Journal Classification (ASJC) codes

  • Applied Psychology

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