German version of the outcome expectations for exercise scale-2 : Psychometric properties in geriatric patients after hip or pelvic fractures with fear of falling.

OBJECTIVE: Physical exercise is associated with many health benefits. Especially for older adults it is challenging to achieve an appropriate adherence to exercise programs. The outcome expectations for exercise scale 2 (OEE-2) is a 13-item self-report questionnaire to assess negative and positive exercise outcome expectations in older adults. The aim of this study was to translate the OEE­2 into German and to assess the psychometric properties of this version. METHODS: The OEE­2 was translated from English into German including a forward and backward translation process. Psychometric properties were assessed in 115 patients with hip/pelvic fractures (76% female, mean age 82.5 years) and fear of falling during geriatric inpatient rehabilitation. RESULTS: Principal component analyses could confirm a two-factor solution (positive/negative OEE) that explained 58% of the total variance, with an overall internal reliability of α = 0.89. Cronbach's α for the 9­item positive OEE subscale was 0.89, for the 4­item negative OEE subscale 0.79. The two subscales were correlated with rs = 0.49. Correlations of the OEE total score were highest with the perceived ability to manage falls, prefracture leisure time activities and prior training history (rs = 0.35-0.41). CONCLUSION: These results revealed good internal reliability and construct validity of the German version of the OEE­2. The instrument is valid for measuring physical exercise outcome expectations in older, German-speaking patients with hip or pelvic fractures and fear of falling.