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The Self-Efficacy to Regulate Physical Activity Scale: Exploring the Factor Structure, Temporal Invariance, and External Validity in a Latent Variable Framework

Authors :
André G. Bateman
Nicholas D. Myers
Deborah Feltz
Karin A. Pfeiffer
Kimberly Kelly
Alan L. Smith
Seungmin Lee
Adam McMahon
Isaac Prilleltensky
Ora Prilleltensky
Ahnalee M. Brincks
Source :
Measurement in Physical Education and Exercise Science. 2024 28(1):40-56.
Publication Year :
2024

Abstract

The purpose of this study was to explore the validity of evidence for self-efficacy to regulate physical activity scale (SERPA) measurement using an exploratory latent variable approach. The objectives were to explore the dimensionality, temporal invariance, and external validity of scores produced by the SERPA, a modified version of the barriers self-efficacy scale. Data (N[subscript baseline]= 461 and N[subscript 30 days post-baseline] = 427) from the Well-Being and Physical Activity Study (ClinicalTrials.gov, identifier: NCT03194854), which deployed the Fun For Wellness intervention, were analyzed. A two-dimensional factor structure explained responses to the SERPA at baseline. There was evidence for at least partial strict temporal measurement invariance for this two-dimensional structure. There was evidence for external validity of the SERPA measurement as evidenced by group assignment (i.e. the intervention) exerting a direct effect on the proposed two-dimensional structure of latent self-efficacy to regulate physical activity in adults with obesity at 30 days post-baseline.

Details

Language :
English
ISSN :
1091-367X and 1532-7841
Volume :
28
Issue :
1
Database :
ERIC
Journal :
Measurement in Physical Education and Exercise Science
Publication Type :
Academic Journal
Accession number :
EJ1408887
Document Type :
Journal Articles<br />Reports - Research
Full Text :
https://doi.org/10.1080/1091367X.2023.2218837