Article

The aim of the present study was to investigate aspects of reliability
and validity of the Exercise Self-Efficacy Scale (ESES-S) in a rheumatoid
arthritis (RA) population. METHODS: A total of 244 people with RA participating
in a physical activity study were included.
The six-item ESES-S, exploring
confidence in performing exercise, was assessed for test-retest reliability over
4-6 months, and for internal consistency.
Construct validity investigated
correlation with similar and other constructs. RESULTS: An intraclass correlation
coefficient (ICC) of 0.59 (95% CI 0.37-0.73) was found for 84 participants with
stable health perceptions between measurement occasions. Cronbach's alpha
coefficients of 0.87 and 0.89 were found at the first and second measurements.
Corrected item-total correlation single ESES-S items ranged between 0.53 and
0.73. Construct convergent validity for the ESES-S was partly confirmed by
correlations with health-enhancing physical activity and outcome expectations
respectively (Pearson's r = 0.18, p < 0.01). Construct divergent validity was
confirmed by the absence of correlations with age or gender. No floor or ceiling
effects were found for ESES-S. CONCLUSIONS: The results indicate that the ESES-S
has moderate test-retest reliability and respectable internal consistency in
people with RA. Construct validity was partially supported in the present sample.
Further research on construct validity of the ESES-S is recommended. IMPLICATIONS
FOR REHABILITATION: Physical exercise is crucial for management of symptoms and
co-morbidity in rheumatoid arthritis. Self-efficacy for exercise is important to
address in rehabilitation as it regulates exercise motivation and behavior.
Measurement properties of self-efficacy scales need to be assessed in specific
populations and different languages.

Langue : ANGLAIS