An exercise ranking is not a prescription
A comparison of mind-body exercise studies finds promising signals while warning that certainty and indirect comparisons limit its rankings.
A November 2 network meta-analysis in Aging Clinical and Experimental Research compares 44 randomised trials involving 3,189 people with mild cognitive impairment. The review considers Baduanjin, tai chi, qigong and dance, using cognitive-test outcomes.
Reading the uncertainty beside the ranking
On the MoCA measure, all four forms of exercise performed better than controls in the analysis. On the MMSE measure, qigong did not show the same significant advantage. Baduanjin ranked highest in the statistical comparison, while subgroup findings suggested a possible advantage for tai chi in longer programmes.
The authors nevertheless rate the certainty as generally low and emphasise reliance on indirect comparisons. A high rank does not establish a universally superior activity, and subgroup patterns do not determine a suitable schedule for an individual. The trials also do not demonstrate that a yoga class would produce the same findings.
For teachers working with older students, the useful reading includes the population, activity, duration and measurement used. The review offers questions for further study. It does not turn a ranking table into an individual prescription or establish that exercise prevents dementia.
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