Isometric Back Exercise Has Different Effect on Pressure Pain Thresholds in Healthy Men and Women
Isometric Back Exercise Has Different Effect on Pressure Pain Thresholds in Healthy Men and Women
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DOI：
10.1093/pm/pnw176
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发表时间：
2017-05-01
期刊：
影响因子：
3.1
通讯作者：
Vaegter, Henrik Bjarke
中科院分区：
文献类型：
--
作者：
Gajsar, Hannah;Titze, Christina;Vaegter, Henrik Bjarke
Objective.等长运动引起疼痛敏感性的急剧下降，称为运动诱发的痛觉减退（EIH）。现有的EIH范例在四肢使用运动，与远程身体部位相比，在局部具有更明显的EIH，表明除了中枢抑制机制之外还有局部抑制。到目前为止，下腰痛（LBP）患者的EIH结果是模棱两可的，没有研究调查了针对下背部的EIH范例，以评估LBP患者的EIH。因此，这项试点研究的目的是评估压力疼痛的敏感性，在本地和远程评估网站，之前和之后的等距背部锻炼健康的妇女和男子。在一个前后测试的设计中，在29名健康受试者（17名女性）的下背部，股二头肌肌肉和手的压力疼痛阈值（PPT）进行了评估之前和之后120秒的等长Biering-Soerensen背部伸展测试。运动后，女性的PPT在手部显著增加，而男性则无显著性差异（P = 0.027）。此外，在腿部PPT增加独立于性别（P < 0.004）。运动后下背部的PPT增加接近显著性（P = 0.07）。这项初步研究的结果表明，等距背部运动产生局部和远程痛觉减退。远程EIH仅在女性中得到证实，这支持了运动后痛觉减退反应中性别的影响。等长腰背运动对腰痛患者疼痛敏感性的影响有待进一步研究。
Objective. Isometric exercises produce an acute decrease in the pain sensitivity, known as exercise-induced hypoalgesia (EIH). Existing EIH paradigms use exercises at the extremities with more pronounced EIH at local compared to remote body sites, indicating local inhibition in addition to central inhibitory mechanisms. So far the results on EIH in patients with low back pain (LBP) are equivocal and no studies have investigated an EIH paradigm targeting the lower back in order to assess EIH in patients with LBP. Thus, the aim of this pilot study was to assess pressure pain sensitivity at local and remote assessment sites, before and after an isometric back exercise in healthy women and men.Methods. In a pre-posttest design, pressure pain thresholds (PPT) were assessed at the lower back, biceps femoris muscle, and hand in 29 healthy subjects (17 women) before and after 120 seconds of the isometric Biering-Soerensen back extension test.Results. After exercise, PPT increased significantly at the hand in women, but not in men (P = 0.027). Moreover, PPT at the leg increased independently of sex (P < 0.004). The increase in PPT at the lower back after exercise approached significance (P = 0.07).Conclusions. The results of this pilot study indicate that isometric back exercise produces local and remote hypoalgesia. Remote EIH was only demonstrated in women, supporting the influence of sex in the hypoalgesic response after exercise. The effect of isometric back exercise on pain sensitivity in patients with low back pain should be investigated in future studies.