Cross-cultural adaptation and measurement properties of the Brazilian version of the Exercise Preference Questionnaire (stroke) .

BACKGROUND: The Exercise Preference Questionnaire (EPQ(stroke) ) captures exercise preferences and measures personal factors, that influence motivation and adherence to exercise in stroke subjects.

OBJECTIVES: To perform the cross-cultural adaptation of the EPQ(stroke) into the Brazilian-Portuguese language and to evaluate its measurement properties.

METHODS: The EPQ(stroke) was cross-culturally adapted and primarily tested in 30 chronic stroke subjects. After the final version of the EPQ(stroke) -Brazil was created, its test-retest reliability was verified, using Kappa indices and intra-class correlation coefficients (ICCs) (n=50), and internal consistency was verified using Cronbach's alpha coefficients (n=101). Construct validity was assessed using exploratory factor analysis (n=101), content validity using the content validity index (CVI) (n=8), and face validity using the rate of agreement regarding the clarity, wording, ability to answer the questions, and lay-out and style of the questionnaire with two groups, including individuals with stroke (n=81) and multidisciplinary health professionals (n=32).

RESULTS: The pre-final version required revisions (items 9, 29, and 30) and, after another pre-test, it was shown to be appropriate. The Kappa indices ranged from 0.58 to 0.95; the ICCs from 0.35 to 0.93, and the Cronbach's alpha coefficient was 0.82 (0.768-0.869 CI), showing adequate internal consistency. The exploratory factor analysis and CVI confirmed the validity of the EPQ(stroke) -Brazil. The rate of agreement was greater than 80% for both groups.

CONCLUSION: The EPQ(stroke) -Brazil was found to be a valid and reliable measure for verifying exercise preferences of Brazilian individuals with stroke.