The theory of planned behavior and physical activity change: Outcomes of the Aging Well and Healthily Intervention Program for Older Adults: Outcomes of the aging well and healthily intervention program for older adults

E. Stolte, M. Hopman-Rock, M.J. Aartsen, T.G. van Tilburg, A. Chorus

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The predictive value of the Theory of Planned Behavior (TPB) on intention and physical activity (PA) over time was examined. Data from the Aging Well and Healthily intervention program (targeting perceived behavioral control and attitude, not subjective norm) were analyzed, including pretest (T0), posttest (T1, except subjective norm) and 4-6 months follow-up (T2, PA outcomes only) (N = 387, M age 72 yrs). Structural equation modelling was used to test a TPB model. PA was measured subjectively using the Voorrips sports subscale (T0 and T2), items measuring perceived increase in PA (T1), and adherence to exercises (T1 and T2). Model fit was good. TPB explained variation in intention well (R2 0.54 to 0.60) and some of PA behavior (R2 0.13 to 0.16). The intervention successfully got participants to exercise independent of the measured TPB concepts. More TPB studies in the context of interventions are needed.
Original languageEnglish
Pages (from-to)438-445
Number of pages8
JournalJournal of aging and physical activity
Volume25
Issue number3
Early online date27 Dec 2016
DOIs
Publication statusPublished - 1 Jul 2017

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