Developing an instrument to measure physical activity related self-worth in women

Rasch analysis of the Women's Physical Activity Self-Worth Inventory (WPASWI)

Jennifer Huberty, Jamie Vener, Yong Gao, Justin L. Matthews, Lynda Ransdell, Steriani Elavsky

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Abstract

Objectives: The objective of this study is to report on the development of an instrument to assess non-physical aspects of physical activity (PA)-related self-worth (SW). Methods: Three hundred thirty five women (mean age = 36.69 ± 15.94 yrs, BMI = 24.87 ± 4.56) completed the Women's Physical Activity Self-Worth Inventory (WPASWI), General SW Scale, and a PA Questionnaire. Rasch analysis was used to evaluate the WPASWI. Results: Three PA-related SW subscales were identified: PA Knowledge (16 items), PA Emotional (13 items), and PA Social (8 items). Rasch analysis supported construct validity, and items demonstrated acceptable internal consistency (Cronbach's alpha = 0.90, 0.87 and 0.72) and test-re-test reliability (r= 0.79, 0.70, 0.81). Women who reported regular PA participation had higher PA Knowledge, PA Emotional, PA Social, and General SW than those who reported some or no PA (p< 0.01) and correlations between Knowledge, Emotional, and Social SW subscales and General SW were 0.207, 0.130, and 0.220, respectively. PA Knowledge and PA Emotional SW had stronger correlations with PA (r= 0.344, 0.273, respectively) than did General SW (r= 0.133). Conclusions: The WPASWI demonstrated good internal consistency, reliability, construct validity and a stronger relationship with PA than a General SW instrument.

Original languageEnglish (US)
Pages (from-to)111-121
Number of pages11
JournalPsychology of Sport and Exercise
Volume14
Issue number1
DOIs
StatePublished - Jan 2013

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Keywords

  • Assessment
  • Methods
  • Tool

ASJC Scopus subject areas

  • Applied Psychology

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Developing an instrument to measure physical activity related self-worth in women : Rasch analysis of the Women's Physical Activity Self-Worth Inventory (WPASWI). / Huberty, Jennifer; Vener, Jamie; Gao, Yong; Matthews, Justin L.; Ransdell, Lynda; Elavsky, Steriani.

In: Psychology of Sport and Exercise, Vol. 14, No. 1, 01.2013, p. 111-121.

Research output: Contribution to journalArticle

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