Testing of the short self-efficacy and outcome expectations

Abstract

The purpose of this study was to test the reliability and validity of the short outcome expectations for exercise (SOEE) and short self-efficacy expectations for exercise (SSEE) scales in a sample of adults recruited into two exercise intervention studies for patients post stroke. A total of 157 individuals, 90 males (56%) and 67 females (43%) with an average age of 63.7 (SD=12.3) years participated in the study. There was evidence of internal consistency for both scales based on alpha coefficients and Rasch Model testing estimates of person and item separability, evidence of test re-test reliability with no change in scores over a 6-week period, and some support of reliability based on R2 estimates. There was evidence of validity of the measures based on confirmatory factor analysis using structural equation modeling and Rasch measurement model testing, and convergent validity testing. There was some evidence of convergent validity based on a statistically significant relationship between selfefficacy and outcome expectations, and both of these measures with physical health status. The study provided some preliminary evidence for the reliability and validity of the SSEE and SOEE when used with adult stroke patients, and suggested revisions for subsequent use of these measures are provided.