这个要求有对照组对照组应该至少有两个
所有跟贴·加跟贴·新语丝读书论坛
送交者: HunHunSheng 于 2008-01-29, 11:33:58:
回答: 太极拳还是有用的,我一朋友打太极拳治好强直性脊椎炎 由 micro 于 2008-01-29, 11:21:38:
One contrast group is other type of exercise. ANother contrast group is dummy Tai Chi. Dummy Tai Chi means people imitaing Tai Chi move but does not know what it is
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