Validation of the multidimensional outcome expectations for exercise scale in ambulatory, symptom-free persons with multiple sclerosis.
McAuley E, Motl RW, White SM, Wójcicki TR. Validation of the Multidimensional Outcome Expectations for Exercise Scale in ambulatory, symptom-free persons with multiple sclerosis.


OBJECTIVE
To determine the psychometric properties of the 3-factor Multidimensional Outcome Expectations for Exercise Scale in a sample of ambulatory, symptom-free persons with multiple sclerosis (MS).


METHODS
Cross-sectional validation study.


METHODS
Midwestern university.


METHODS
Community-dwelling adults (N=242) with an established definite diagnosis of MS, as corroborated by the participant's neurologist, who were relapse free for the last 30 days and ambulatory with minimal assistance.


METHODS
Not applicable.


METHODS
Multidimensional Outcome Expectations for Exercise Scale, physical activity, self-efficacy, and physical health status. Confirmatory factor analyses using covariance modeling and correlational analyses were used to establish factorial and construct validity.


RESULTS
Analyses showed excellent factorial validity for the hypothesized factor structure reflecting physical, social, and self-evaluative outcome expectations. All 3 subscales were internally consistent. Theoretically, relevant correlations between outcome expectations and self-efficacy, physical activity, and physical health status were all supported.


CONCLUSIONS
The Multidimensional Outcome Expectations for Exercise Scale appears to be a reliable and valid measure of outcome expectations for exercise in this limited sample of community-dwelling adults with MS. Further validation in clinical samples is warranted.
McAuley
Edward
E
Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, USA. emcauley@illinois.edu
Motl
Robert W
RW
White
Siobhan M
SM
Wójcicki
Thomas R
TR
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D015444:Exercise / Q000523:psychology*; D006304:Health Status; D006801:Humans; D007398:Interpersonal Relations; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000523:psychology* / Q000534:rehabilitation*; D011594:Psychometrics; D015203:Reproducibility of Results; D020377:Self Efficacy