Department of Physical Therapy, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Faculty of Sport Sciences, Allameh Tabataba'i University, Tehran, Iran.
Physiother Theory Pract. 2023 Jul 3;39(7):1428-1436. doi: 10.1080/09593985.2022.2043497. Epub 2022 Feb 23.
To compare muscle strength and flexibility among a subgroup of women with extension-related chronic nonspecific low back pain (CNLBP) with healthy controls.
In this case-control study, 32 subjects with and without extension-related CNLBP were tested (n = 16 in each group). Gluteal, abdominal, paravertebral, and hamstring strength, along with hip flexor flexibility and hamstring flexibility were compared between groups. Data were analyzed using the Mann-Whitney test (p < .007).
The CNLBP subgroup displayed significantly lower strength of all muscles analyzed (p < .007), with the exception of gluteus medius. The flexibility of the hip flexors and hamstrings were not significantly reduced among the women with CNLBP (p > .007).
The present study showed that alterations in muscle strength, but not flexibility, partly consistent with those previously hypothesized but not objectively reported, were present among a subgroup of women with extension-related CNLBP. These results may have implications for the selection of therapeutic exercises among this subgroup of people with CNLBP.
比较与伸展相关的慢性非特异性下腰痛（CNLBP）亚组女性与健康对照组的肌肉力量和柔韧性。
在这项病例对照研究中，对有和无伸展相关的 CNLBP 的 32 名受试者进行了测试（每组 16 名）。比较了两组之间的臀肌、腹肌、竖脊肌和腘绳肌力量、髋关节屈肌柔韧性和腘绳肌柔韧性。使用曼-惠特尼检验（p < 0.007）进行数据分析。
CNLBP 亚组的所有分析肌肉的力量均显著降低（p < 0.007），但臀中肌除外。CNLBP 女性的髋关节屈肌和腘绳肌的柔韧性没有明显降低（p > 0.007）。
本研究表明，伸展相关的 CNLBP 亚组女性存在肌肉力量的改变，但柔韧性没有改变，这部分与之前假设的但没有客观报道的情况一致。这些结果可能对 CNLBP 亚组人群的治疗性运动选择有影响。
