Effects of yoga in adults with type 2 diabetes mellitus: A meta-analysis.

Heterogeneity was clearly significant for the primary end‐point.

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When interpreting the results, several limitations should be taken into account: (i) different characteristics of study participants, yoga forms and protocols, and exercise durations are the most crucial confounders of the RCTs, and could result in risk of bias and heterogeneity; (ii) except for three RCTs 17 , 18 , 28 , all other RCTs surveyed were not blinded, which could result in performance and detection bias; (iii) considering that 12 RCTs with a wide variation in sample size were incorporated into our analysis, the effects of overestimation of treatment efficiency may be significant; and (iv) missing and unpublished data, as well as the exclusion of non‐English language studies, could result in effect size bias.

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