Antonio Brandi B, Stout Jeffrey R, Sterner Danielle A, Fukuda David H, Anderson Abigail W
Physiology of Work and Exercise Response (POWER) Lab, Institute of Exercise Physiology and Rehabilitation Science, University of Central Florida, Orlando, FL, USA.
Rehabilitation and Modulation of Pain (RAMP) Lab, Institute of Exercise Physiology and Rehabilitation Science, University of Central Florida, Orlando, FL, USA.
Int J Exerc Sci. 2024 Dec 1;17(7):1337-1351. doi: 10.70252/NIZK5519. eCollection 2024.
This study assessed the effect of an eight-minute cycling intervention using varying intensities on exercise-induced hypoalgesia (EIH). The main objective of this study was to examine the effect of varying intensities on pressure pain threshold (PPT) and heat pain threshold (HPT) at the thigh and forearm, tested pre- and post-cycling intervention. Healthy male participants ( = 16) performed a graded exercise test on a cycle ergometer to establish their peak power output (PPO). In subsequent visits, participants completed five different 8-minute cycling interventions, with intensities randomly assigned to one of three counterbalanced orders. HPT and PPT were applied to the thigh and forearm two times before and after each cycling intervention. Additionally, there was a notable effect of intensity on PPT in the thigh, with significant changes at intensities of 90% ( = 0.024) and 100% PPO ( = 0.003). In the forearm, repeated measures ANOVA indicated that there was no significant interaction or main effect for intensity and time. Similarly, for HPT, the analysis did not show significant interaction or main effects for both intensity and location. This study was the first to examine EIH using an 8-minute cycling intervention on a cycling ergometer at individualized intensities. Higher intensity cycling sessions generated EIH locally in the thigh using PPT. A short but high intensity cycling intervention may have clinical relevance, as it can provide an intervention to reduce localized pain immediately after exercise using a pressure pain stimulus.
本研究评估了使用不同强度的八分钟骑行干预对运动诱导性痛觉减退（EIH）的影响。本研究的主要目的是在骑行干预前后测试不同强度对大腿和前臂的压力痛阈（PPT）和热痛阈（HPT）的影响。健康男性参与者（n = 16）在自行车测力计上进行了分级运动测试，以确定他们的峰值功率输出（PPO）。在随后的访视中，参与者完成了五次不同的八分钟骑行干预，强度被随机分配到三个平衡顺序之一。在每次骑行干预前后，对大腿和前臂进行两次HPT和PPT测试。此外，强度对大腿的PPT有显著影响，在90%（p = 0.024）和100%PPO（p = 0.003）强度时有显著变化。在前臂，重复测量方差分析表明，强度和时间没有显著的交互作用或主效应。同样，对于HPT，分析也没有显示强度和位置的显著交互作用或主效应。本研究首次在自行车测力计上以个体化强度使用八分钟骑行干预来研究EIH。更高强度的骑行训练使用PPT在大腿局部产生了EIH。短暂但高强度的骑行干预可能具有临床相关性，因为它可以提供一种干预措施，在运动后立即使用压力痛刺激来减轻局部疼痛。
