A randomized control trial was conducted in subjects with long-standing,
chronic low back pain. Iyengar yoga therapy was compared to an educational
control group in a 16 week long program. Forty-two patients completed
the study. Analyses of medical and functional outcomes revealed significant
reductions in pain intensity (64%), functional disability (77%) and
pain medication usage (88%) in the yoga group at the post and 3-month
follow-up assessments. These preliminary data indicate that the majority
of self-referred persons with mild chronic low back pain in this study
reported improvement on medical and functional pain-related outcomes
from Iyengar yoga therapy.
Williams K, Petronis J, Smith D, et al. Pain. 115(1-2): 107-117, 2005.