School of Kinesiology and Rehabilitation Sciences, College of Health Professions and Sciences, University of Central Florida, Orlando, Florida, USA.
Physiol Rep. 2024 Jun;12(12):e16123. doi: 10.14814/phy2.16123.
Dynamic resistance exercise may produce reductions in pain locally at the exercising muscle and systemically at non-exercising sites. However, limited research has examined these changes with multiple noxious stimuli. This study examined changes in heat pain threshold (HPT) and pressure pain threshold (PPT) on different musculature after an upper and lower body exercise to compare local and systemic effects. A crossover design with 28 participants (mean age: 21 ± 4 years, 21 female) completed three sessions. Visit one included baseline quantitative sensory testing and 5-repetition maximum (RM) testing for upper (shoulder press) and lower (leg extension) body. In subsequent sessions, participants performed upper or lower body exercises using an estimated 75% 1-RM with pre/post assessment of HPT and PPT at three sites: deltoid, quadriceps, and low back. A significant three-way interaction was observed for HPT (F (1.71, 3.80) = 2.19, p = 0.036, ηp = 0.12) with significant increases in HPT over the quadriceps (p = 0.043) after leg extension and over the deltoid (p = 0.02) after shoulder press. Significant systemic changes were not observed for HPT or PPT. Local but not systemic effects were demonstrated after an acute bout of exercise. Peripheral pain sensitivity may be more responsive to heat stimuli after resistance exercise.
动态抗阻运动可能会使运动肌肉局部和非运动部位的疼痛减轻。然而,有限的研究已经检查了这些变化与多种有害刺激。本研究比较了上肢和下肢运动后不同肌肉的热痛阈值(HPT)和压痛阈值(PPT)的变化,以研究局部和系统效应。28 名参与者(平均年龄:21 ± 4 岁,21 名女性)采用交叉设计完成了 3 次测试。第一次测试包括基线定量感觉测试和 5 次重复最大(RM)测试,用于上肢(肩推)和下肢(腿伸展)。在随后的测试中,参与者使用估计的 75%1-RM 进行上肢或下肢运动,在三角肌、股四头肌和下背部三个部位进行 HPT 和 PPT 的预/后评估。HPT 观察到显著的三因素交互作用(F(1.71,3.80)= 2.19,p = 0.036,ηp = 0.12),股四头肌(p = 0.043)后伸膝和三角肌(p = 0.02)后肩推 HPT 显著增加。HPT 或 PPT 均未观察到系统变化。急性运动后仅观察到局部而不是系统效应。外周疼痛敏感性可能对热刺激更敏感阻力运动后。