测定所有对象的躯干肌力和身体动摇。
Trunk muscle strength and body sway were measured from all subjects.
而且对身体动摇和腰痛关系的研究很少。
Furthermore, there are only few studies on the association between body sway and LBP.
结果：根据腰痛症状LCA分析产生了六个集群。集群间的躯干肌力和身体动摇没有统计学上的明显差异。
Results. LCA analysis produced 6 clusters differing with respect to LBP symptoms. There were no statistically significant differences between the clusters in trunk muscle strength or body sway.
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