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Physical activity among adults with obesity: Testing the Health Action Process approach
Parschau, Linda Barz, Milena Richert, Jana Knoll, Nina Lippke, Sonia Schwarzer, Ralf
Parschau, Linda
Barz, Milena
Richert, Jana
Knoll, Nina
Lippke, Sonia
Schwarzer, Ralf
Abstract
Objective: This study tested the applicability of the Health Action Process Approach (HAPA) in a sample of obese adults in the context of physical activity. Method: Physical activity was assessed along with motivational and volitional variables specified in the HAPA (motivational self-efficacy, outcome expectancies, risk perception, intention, maintenance self-efficacy, action planning, coping planning, recovery self-efficacy, social support) in a sample of 484 obese men and women (body mass index ≥30 kg/m2). Results: Applying structural equation modeling, the fit of the HAPA model was satisfactory—χ²(191) = 569.93, p < .05, χ²/df = 2.98, comparative fit index = .91, normed-fit index = .87, and root mean square error of approximation = .06 (90% CI = .06, .07)—explaining 30% of the variance in intention and 18% of the variance in physical activity. Motivational self-efficacy, outcome expectancies, and social support were related to intention. An association between maintenance self-efficacy and coping planning was found. Recovery self-efficacy and social support were associated with physical activity. No relationships were found between risk perception and intention and between planning and physical activity. The assumptions derived from the HAPA were partly confirmed and the HAPA may, therefore, constitute a theoretical backdrop for intervention designs to promote physical activity in adults with obesity. (PsycINFO Database Record (c) 2016 APA, all rights reserved)
Keywords
motivation, overweight, self-efficacy, social support, volition, physical activity, adult obesity, outcomes, risk perception, intention, action planning, coping planning
Date
2014
Type
Journal article
Journal
Rehabilitation Psychology
Book
Volume
59
Issue
1
Page Range
42-49
Article Number
ACU Department
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Relation URI
DOI
Event URL
Open Access Status
License
File Access
Controlled