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Do intrapersonal factors mediate the association of social support with physical activity in young women living in socioeconomically disadvantaged neighbourhoods? A longitudinal mediation analysis

Middelweerd, Anouk, te Velde, Saskia J., Abbott, Gavin, Timperio, Anna, Brug, Johannes and Ball, Kylie 2017, Do intrapersonal factors mediate the association of social support with physical activity in young women living in socioeconomically disadvantaged neighbourhoods? A longitudinal mediation analysis, PLoS one, vol. 12, no. 3, pp. 1-14, doi: 10.1371/journal.pone.0173231.

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Title Do intrapersonal factors mediate the association of social support with physical activity in young women living in socioeconomically disadvantaged neighbourhoods? A longitudinal mediation analysis
Author(s) Middelweerd, Anouk
te Velde, Saskia J.
Abbott, GavinORCID iD for Abbott, Gavin orcid.org/0000-0003-4014-0705
Timperio, AnnaORCID iD for Timperio, Anna orcid.org/0000-0002-8773-5012
Brug, Johannes
Ball, KylieORCID iD for Ball, Kylie orcid.org/0000-0003-2893-8415
Journal name PLoS one
Volume number 12
Issue number 3
Article ID e0173231
Start page 1
End page 14
Total pages 14
Publisher Public Library of Science
Place of publication San Francisco, Calif.
Publication date 2017
ISSN 1932-6203
Keyword(s) Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
STRUCTURAL EQUATION ANALYSIS
SELF-EFFICACY
COGNITIVE THEORY
HEALTH-PROMOTION
AUSTRALIAN WOMEN
DETERMINANTS
ADULTS
EXERCISE
BEHAVIOR
STUDENTS
Summary Background
Levels of physical activity (PA) decrease when transitioning from adolescence into young adulthood. Evidence suggests that social support and intrapersonal factors (self-efficacy, outcome expectations, PA enjoyment) are associated with PA. The aim of the present study was to explore whether cross-sectional and longitudinal associations of social support from family and friends with leisure-time PA (LTPA) among young women living in disadvantaged areas were mediated by intrapersonal factors (PA enjoyment, outcome expectations, self-efficacy).

Methods

Survey data were collected from 18–30 year-old women living in disadvantaged suburbs of Victoria, Australia as part of the READI study in 2007–2008 (T0, N = 1197), with follow-up data collected in 2010–2011 (T1, N = 357) and 2012–2013 (T2, N = 271). A series of single-mediator models were tested using baseline (T0) and longitudinal data from all three time points with residual change scores for changes between measurements.

Results

Cross-sectional analyses showed that social support was associated with LTPA both directly and indirectly, mediated by intrapersonal factors. Each intrapersonal factor explained between 5.9–37.5% of the associations. None of the intrapersonal factors were significant mediators in the longitudinal analyses.

Conclusions
Results from the cross-sectional analyses suggest that the associations of social support from family and from friends with LTPA are mediated by intrapersonal factors (PA enjoyment, outcome expectations and self-efficacy). However, longitudinal analyses did not confirm these findings.
Language eng
DOI 10.1371/journal.pone.0173231
Field of Research 110699 Human Movement and Sports Science not elsewhere classified
MD Multidisciplinary
Socio Economic Objective 920401 Behaviour and Health
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2017, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30092401

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.