Citation

Li C, Hullings C, Wang W, Palmer Keenan DM. J. Phys. Act. Health 2021; ePub(ePub): ePub.

Copyright

(Copyright © 2021, Human Kinetics Publishers)

DOI

10.1123/jpah.2020-0259

PMID

unavailable

Abstract

BACKGROUND: Low-income adolescents' physical activity (PA) levels fall below current recommendations. Perceived barriers to physical activity (PBPA) are likely significant predictors of PA levels; however, valid and reliable measures to assess PA barriers are lacking. This manuscript describes the development of the PBPA Survey for Low-Income Adolescents.

METHODS: A mixed-method approach was used. Items identified from the literature and revised for clarity and appropriateness (postcognitive interviews) were assessed for test-retest reliability with 74 adolescents using intraclass correlation coefficient. Items demonstrating low intraclass correlation coefficients or floor effects were removed. Both exploratory factor analysis and confirmatory factor analysis analyses (n = 1914 low-income teens) were used to finalize the scale; internal consistency was assessed by Cronbach's alpha. Concurrent validity was established by correlating the PBPA with the PA questionnaire for adolescents using a Spearman correlation.

RESULTS: The exploratory factor analysis yielded a 38-item, 7-factor solution, which was cross-validated by confirmatory factor analysis (comparative-fit index, nonnormed fit index =.90). The scale's Cronbach's alpha was.94, with subscales ranging from.70 to.88. The PBPA Survey for Low-Income Adolescents' concurrent validity was supported by a negative PA questionnaire for adolescents' correlation values.

CONCLUSION: The PBPA Survey for Low-Income Adolescents can be used to better understand the relationship between PBPA among low-income teens. Further research is warranted to validate the scale with other adolescent subgroups.

Language: en

Keywords

evaluation; methods; behavioral science; community-based research; instrument psychometrics; physical activity assessment