Methods: A quasi-experimental design was used. Participants were recruited from a medical center nurses who had low back pain and assign into yoga (N=20) or control group (N=25). The yoga group practiced one 60 min yoga per week for 12 weeks, and control group maintained general daily activities without practicing yoga. Both groups had pretest data collection and after-test follow-ups on the eighth and twelve weeks. Pretest and after-test measurements of self-reported low back pain severity, frequency and healthy quality of life were assessed with the Standardized Nordic Questionnaire and SF-36 Taiwan Version. Comparisons between those two groups were made using the Generalized Esti-mating Equations (GEE) method.
Results: Results show the baseline of the yoga and control groups for self-reporting their measure of low back pain severity, frequency and healthy quality of life showed no significant difference(p>.05). Results revealed that at both the eighth and twelve weeks, participants in the yoga group showed a significantly greater reduction in low back pain severity than did participants in the control group(p<.05). At the eighth and twelve weeks, participants in the yoga group reported significantly better healthy quality of life psychological domain than did participants in the control group(p<.05).
Conclusion: The yoga exercise can reduce low back pain severity and improve healthy quality of life. Suggestion of this yoga exercise is a valuable addition to the routine for nurses. Further larger randomized controlled trials are needed to confirm these findings and to assess long-term effectiveness.