OBJECTIVES: This study examined whether pretreatment self-efficacy
and pre- to post-treatment changes in self-efficacy predict
post-treatment tender point index, disease severity, pain,
and physical activity.
METHODS: One hundred nine subjects
with fibromyalgia were assessed before and after a 6-week
training intervention. Measures included tender point index,
physician ratings of disease severity, the visual analog scale
for pain, the Physical Activities subscale of the Arthritis
Impact Measurement Scales, and the Arthritis Self-Efficacy
RESULTS: Pretreatment self-efficacy significantly
predicted post-treatment physical activity, with higher
self-efficacy associated with better physical activity
outcome. Changes in self-efficacy significantly predicted
post-treatment tender point index, disease severity, and
pain; improvements in self-efficacy were associated with
better outcomes on each measure.
CONCLUSIONS: Higher levels of self-efficacy are associated with better outcome, and may mediate the effectiveness of rehabilitation-based treatment programs for fibromyalgia.