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  • Title: Development of the Chinese-version of the exercise self-regulatory efficacy scale for patients with chronic obstructive pulmonary disease.
    Author: Tsai YH, Chen JL, Davis AHT, Yen WJ, Lin YJ, Chiang LC, Chen YJ.
    Journal: Heart Lung; 2018; 47(1):16-23. PubMed ID: 29132846.
    Abstract:
    BACKGROUND: A valid and reliable instrument for assessing exercise self-regulatory efficacy (Ex-SRE) is lacking in Taiwan. OBJECTIVE: To develop and validate a Chinese-version of the Ex-SRE scale (Ex-SRES-Chinese). METHODS: Published guidelines were followed for cross-cultural adaptation of Ex-SRES-Chinese. Psychometric testing was conducted in 76 subjects with chronic obstructive pulmonary diseases (COPD). RESULTS: Ex-SRES-Chinese achieved clarity, culture appropriateness, and functional equivalence for measuring Ex-SRE. The scale-level content validity index of the Ex-SRES-Chinese was 0.99. The internal consistency reliability (Cronbach's α) was 0.925. Factor analysis identified a single factor with a high eigenvalue of 7.6 accounting for 47.5% of the total variance. The construct validity of Ex-SRES-Chinese was supported by higher Ex-SRE in subjects who exercise regularly in the past than those who did not (p = 0.033). In addition, Ex-SRE was positively associated with weekly exercise time (r = 0.58; p < 0.0001). CONCLUSIONS: Ex-SRES-Chinese is a useful cross-culturally adapted instrument with good psychometric properties for measuring Ex-SRE in COPD patients in Taiwan.
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