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Comparison of diffuse noxious inhibitory control (cold pressor test) during immersion and at end 1–5 min, in chronic low back pain patients between medical yoga therapy and standard care therapy at baseline, at 4 weeks and at 8 weeks. Level of significance is set at 5% and denoted by *(comparison between Medical Yoga therapy and Standard Care therapy), #(baseline vs. 4 weeks) ∞(baseline vs. 8 week).
