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

Research output: Contribution to journalArticlepeer-review


Objectives: The objective of this study is to report on the development of an instrument to assess nonphysical
aspects of physical activity (PA)-related self-worth (SW).
Methods: Three hundred thirty five women (mean age ¼ 36.69  15.94 yrs, BMI ¼ 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 ¼ 0.90, 0.87 and 0.72) and test-re-test reliability
(r ¼ 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 ¼ 0.344, 0.273,
respectively) than did General SW (r ¼ 0.133).
Conclusions: The WPASWI demonstrated good internal consistency, reliability, construct validity and
a stronger relationship with PA than a General SW instrument.
Original languageAmerican English
JournalPsychology of Sport and Exercise
StatePublished - Jan 2013


  • Psychology

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