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. 2020 Aug;42(8):581-592.
doi: 10.1177/0193945919871697. Epub 2019 Aug 30.

Examining Potential Psychosocial Mediators in a Physical Activity Intervention for Older Adults

Siobhan K McMahon  1 , Beth Lewis  2 , J Michael Oakes  3 , Jean F Wyman  1 , Weihua Guan  4 , Alexander J Rothman  5
Affiliations

Examining Potential Psychosocial Mediators in a Physical Activity Intervention for Older Adults

Siobhan K McMahon et al. West J Nurs Res. 2020 Aug.

Abstract

The purpose of this study was to examine psychosocial constructs targeted as potential mediators in a prior physical activity (PA) intervention study. This secondary analysis used data from 102 older adults randomized to one of four conditions-within a 2 (Interpersonal Strategies: yes, no) x 2 (Intrapersonal Strategies: yes, no) factorial design. We tested intervention effects on social support, self-efficacy, self-regulation, and goal attainment, and whether these constructs mediated intervention effects on PA. Participants who received interventions with interpersonal strategies, compared to those who did not, increased their readiness (post-intervention), the self-regulation subscale of self-assessment, and goal attainment (post-intervention, 6-months). Participants who received interventions with intrapersonal strategies, compared to those who did not, increased their social support from family (post-intervention). There was no statistically significant mediation. To understand mechanisms through which interventions increase older adults' PA and to improve intervention effectiveness, researchers should continue to examine potential psychosocial mediators.Clinical Trial Registry: NCT02433249.

Keywords: older adults; physical activity; psychosocial mediators.

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Conflict of interest statement

Declaration of Conflicting Interests

The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Figures

Figure 1.
Figure 1.
Conceptual model of the intervention study.
See this image and copyright information in PMC

References

    1. Ainsworth B, Cahalin L, Buman M, & Ross R (2015). The current state of physical activity assessment tools. Progress in Cardiovascular Diseases, 57(4), 387–395. doi:10.1093/aje/kwq249 - DOI - PubMed
    1. Barrera M, Toobert DJ, Angell KL, Glasgow RE, & Mackinnon DP (2006). Social support and social-ecological resources as mediators of lifestyle intervention effects for type 2 diabetes. Journal of Health Psychology, 11(3), 483–495. doi: 10.1177/1359105306063321 - DOI - PubMed
    1. Bauman A, Merom D, Bull FC, Buchner DM, & Fiatarone Singh MA (2016). Updating the evidence for physical activity: Summative reviews of the epidemiological evidence, prevalence, and interventions to promote “active aging.” The Gerontologist, 56(Suppl. 2), S268–S280. doi:10.1093/geront/gnw031 - DOI - PubMed
    1. Becofsky K, Baruth M, & Wilcox S (2014). Psychosocial mediators of two community-based physical activity programs. Annals of Behavioral Medicine, 48(1), 125–129. doi:10.1007/S12160-013-9578-3 - DOI - PubMed
    1. Buman MP, Hekler EB, Haskell WL, Pruitt L, Conway TL, Cain KL, … King AC (2010). Objective light-intensity physical activity associations with rated health in older adults. American Journal of Epidemiology, 172(10), 1155–1165. doi:10.1093/aje/kwq249 - DOI - PMC - PubMed

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