Nakahara Hidehiro, Ueda Shin-Ya, Kawai Eriko, Higashiura Rui, Miyamoto Tadayoshi
Graduate School of Health Sciences, Morinomiya University of Medical Sciences, 1-26-16 Nankokita, Suminoe, Osaka City, Osaka, 559-8611, Japan.
Faculty of Education, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan.
BMC Sports Sci Med Rehabil. 2021 Oct 16;13(1):129. doi: 10.1186/s13102-021-00358-1.
The purpose of the present study was to investigate the effects of bradycardia induced by pre-exercise acupuncture on heart rate responses during short-duration exercise.
A total of 29 healthy subjects underwent two protocols: protocol 1 assessed the effects of manual acupuncture on heart rate response during rest, and protocol 2 tested the hypothesis that the bradycardic effects induced by pre-exercise acupuncture continue during low- and high-intensity exercise. Their average age, height, weight, and body mass index were 21.2 ± 2.0 years, 167.2 ± 8.8 cm, 63.8 ± 12.8 kg, and 22.7 ± 3.5 kg/m, respectively. In acupuncture stimulations for protocols 1 and 2, an acupuncture needle was inserted into the lower leg and manual acupuncture stimulation was performed at 1 Hz.
In protocol 1 (resting condition), acupuncture stimulation induced a bradycardic response, which continued for 4 min after the cessation of acupuncture stimulation (p < 0.05). In protocol 2, the bradycardic response induced by pre-exercise acupuncture stimulation remained during low-intensity exercise and in the beginning of high-intensity exercise performed immediately after the cessation of acupuncture stimulation (p < 0.05). However, the effects disappeared when post-acupuncture exercise was performed when the heart rate was approximately 140 beats/min during high-intensity exercise. The rating of perceived exertion after exercise differed significantly between the acupuncture stimulation task (7.9 ± 1.6) and no-stimulation task (8.5 ± 2.0) (p = 0.03) only in the low intensity group.
This study may provide new insights into the effect of acupuncture stimulation on psycho-physiological conditions during exercise.
本研究旨在探讨运动前针刺诱发的心动过缓对短时间运动中心率反应的影响。
共有29名健康受试者接受了两种方案：方案1评估了手法针刺对静息心率反应的影响，方案2检验了运动前针刺诱发的心动过缓效应在低强度和高强度运动期间持续存在的假设。他们的平均年龄、身高、体重和体重指数分别为21.2±2.0岁、167.2±8.8厘米、63.8±12.8千克和22.7±3.5千克/米²。在方案1和方案2的针刺刺激中，将一根针灸针插入小腿，并以1赫兹的频率进行手法针刺刺激。
在方案1（静息状态）中，针刺刺激诱发了心动过缓反应，在针刺刺激停止后持续了4分钟（p<0.05）。在方案2中，运动前针刺刺激诱发的心动过缓反应在低强度运动期间以及针刺刺激停止后立即进行的高强度运动开始时仍然存在（p<0.05）。然而，当在高强度运动期间心率约为140次/分钟时进行针刺后运动时，这种效应消失了。仅在低强度组中，针刺刺激任务（7.9±1.6）和无刺激任务（8.5±2.0）后的运动感知用力评分存在显著差异（p=0.03）。
本研究可能为针刺刺激对运动中心理生理状况的影响提供新的见解。
