Department of Physical Education, Functional Training Group, Federal University of Sergipe, São Cristóvão, Brazil.
Department of Physical Education, Functional Training Group, University Center Ages, Paripiranga, Brazil.
Physiol Rep. 2022 Sep;10(17):e15365. doi: 10.14814/phy2.15365.
Exercise-induced hypoalgesia (EIH) is characterized as the pain reduction after an exercise session and it seems to be related to the release of plasma β-endorphin. In this sense, the core stabilization training (CT) has been suggested for patients with chronic nonspecific low back pain (CNSLBP), but it is unclear whether it induces EIH. Patients with CNSLBP have neuromotor dysfunctions that can affect the performance of functional tasks, thus, performing functional training (FT) could improve motor control and promote EIH, since functional training uses multi-joint exercises that aim to improve the functionality of actions performed in daily life. EIH is usually assessed using quantitative sensory tests (QST) such as conditioned pain modulation, pressure pain threshold, and temporal summation. Thus, the sum of parameters from quantitative sensory tests and plasma β-endorphin would make it possible to understand what the neuroendocrine effects of FT and CT session are. Our study compared the acute effect of CT and FT on the EIH and plasma β-endorphin release, and correlated plasma β-endorphin with quantitative sensory testing in patients with CNSLBP. Eighteen women performed two training sessions (CT and FT) with an interval of 48 h between sessions. EIH was assessed by QST and plasma β-endorphin levels. Results showed that only FT significantly increased plasma β-endorphin (FT p < 0.01; CT p = 0.45), which correlated with pain pressure threshold (PPT) and conditioned pain modulation (CPM). However, QST values were not different in women with CNSLBP after CT or FT protocols. Plasma β-endorphin correlated with PPT and CPM, however, the same did not occur with a temporal summation.
运动诱导的痛觉减退（EIH）的特征是运动后疼痛减轻，似乎与血浆β-内啡肽的释放有关。在这方面，核心稳定性训练（CT）已被建议用于慢性非特异性下腰痛（CNSLBP）患者，但尚不清楚它是否会引起 EIH。CNSLBP 患者存在神经运动功能障碍，这可能会影响其执行功能任务的能力，因此，进行功能训练（FT）可能会改善运动控制并促进 EIH，因为功能训练使用多关节运动，旨在提高日常生活中执行动作的功能。EIH 通常使用定量感觉测试（QST）进行评估，例如条件性疼痛调制、压痛阈值和时间总和。因此，定量感觉测试和血浆β-内啡肽的参数总和将使我们能够了解 FT 和 CT 治疗对神经内分泌的影响。我们的研究比较了 CT 和 FT 对 EIH 和血浆β-内啡肽释放的急性影响，并在 CNSLBP 患者中对血浆β-内啡肽与定量感觉测试进行了相关性分析。18 名女性进行了两次训练（CT 和 FT），两次训练之间间隔 48 小时。通过 QST 和血浆β-内啡肽水平评估 EIH。结果表明，只有 FT 显著增加了血浆β-内啡肽（FT p<0.01；CT p=0.45），且与疼痛压力阈值（PPT）和条件性疼痛调制（CPM）相关。然而，在接受 CT 或 FT 方案后，CNSLBP 女性的 QST 值没有差异。血浆β-内啡肽与 PPT 和 CPM 相关，但与时间总和无关。
