Individual analysis of dynamic stability for twenty-four Tai Chi forms among persons with knee osteoarthritis: A pilot study.
Feng Yang, Wei Liu
PMID 33668007WHAT IT FOUND
Tai Chi forms varied in balance stability during performance compared with walking in eight adults with knee OA.
Form 8 had the largest forward-back range, Form 10 had the largest side-to-side range, and Form 1 had the smallest ranges.
Key findings
01Twenty-one Tai Chi forms had smaller maximum forward-back dynamic stability than walking, and all forms except Form 1 had smaller minimum forward-back dynamic stability than walking.
02Fifteen Tai Chi forms had larger side-to-side stability ranges than walking, with Form 10 showing the largest range and Form 1 showing the smallest range.
03Form 8 had the largest forward-back stability range, and Form 1 had the smallest forward-back stability range.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The final analysis included eight participants after dropouts, although ten were enrolled. This was a pilot study, so it was not designed to prove that Tai Chi forms improve balance or reduce falls. Only people with mild to moderate knee OA and no Tai Chi experience were studied, so the findings may not apply to people with frailty, other severe lower-limb problems, or other medical conditions. The study measured stability during performance of each form, not the effect of practicing the forms over time. Dynamic stability did not reflect physical difficulty, time demands, or cognitive demands of learning the forms. Only one group was included, without healthy age-matched or Tai Chi master comparison groups.
Declared interests
The authors declared no conflicts of interest. The article is listed as supported by NIH extramural research.
The easy way to misread this
Do not conclude that selecting Tai Chi forms based on these results will prevent falls. The study only measured balance stability during performance in eight adults with knee OA and did not test a training program or fall outcomes.