PDF(Pubmed)
Abstract：
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, η2p = 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.
摘要：
动态阻力运动可以减少运动肌肉的局部疼痛和非运动部位的全身疼痛。然而,有限的研究已经检查了这些变化与多种有害刺激。这项研究检查了上下体运动后不同肌肉组织的热痛阈值（HPT）和压力痛阈值（PPT）的变化，以比较局部和全身效果。交叉设计有28名参与者(平均年龄：21±4岁，21名女性）完成了三场会议。访问包括基线定量感官测试和5次重复最大（RM）测试上部（肩部按压）和下部（腿部伸展）身体。在随后的会议中，参与者使用估计的75％1-RM进行上半身或下半身锻炼，并在三个地点进行HPT和PPT的前/后评估：三角肌，股四头肌,低背。观察到HPT的显着三向相互作用（F（1.71，3.80）=2.19，p=0.036，η2p=0.12），腿部伸展后股四头肌（p=0.043）和肩压后三角肌（p=0.02）。HPT或PPT未观察到明显的系统变化。急性运动后表现出局部而非全身效应。抗阻运动后，外周疼痛敏感性可能对热刺激更敏感。
