Omoto Masayuki, Tsukada Yuya, Hashida Ryuki, Matsuse Hiroo, Tajima Hiroshi, Iwanaga Sohei, Takano Yoshio, Nago Takeshi, Tagawa Yoshihiko, Shiba Naoto
Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan.
Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan.
Metabolites. 2023 Apr 28;13(5):604. doi: 10.3390/metabo13050604.
A hybrid training system (HTS) combining antagonist muscle electrical stimulation and voluntary muscle contraction has been developed using eccentric antagonist muscle contractions with electrical stimulation as resistance to voluntary muscle contractions. We devised an exercise method using HTS combined with a cycle ergometer (HCE). The purpose of this study was to compare the muscle strength, muscle volume, aerobic functions and lactate metabolism of HCE and a volitional cycle ergometer (VCE). A total of 14 male participants performed exercise on a bicycle ergometer for 30 min per session, 3 times per week for 6 weeks. We divided 14 participants into an HCE group (7 participants) and a VCE group (7 participants). The workload was set at 40% of each participant's peak oxygen uptake (V.Opeak). Electrodes were placed over each motor point on the quadriceps and hamstrings. The V.Opeak and anaerobic threshold significantly increased before and after training when using HCE rather than VCE. The HCE group had significantly increased extension and flexion muscle strength at 180 degrees/s in post-training measurements over pre-training measurements. Knee flexion muscle strength at 180 degrees/s tended to increase in the HCE group compared to the VCE group. The quadricep muscle cross-sectional area was significantly increased in the HCE group compared to the VCE group. Additionally, the HCE group had significantly decreased maximal lactate, measured every 5 min during exercise at the end of study, between pre and post-training. Thus, HCE may be a more effective training method for muscle strength, muscle mass and aerobic functions at 40% of each participant's V.Opeak than conventional cycling exercise. HCE could be applied not only as aerobic exercise but also as resistance training.
一种结合拮抗肌电刺激和自主肌肉收缩的混合训练系统（HTS）已被开发出来，该系统利用离心拮抗肌收缩并施加电刺激作为自主肌肉收缩的阻力。我们设计了一种将HTS与自行车测力计（HCE）相结合的运动方法。本研究的目的是比较HCE和传统自行车测力计（VCE）在肌肉力量、肌肉体积、有氧功能和乳酸代谢方面的差异。共有14名男性参与者在自行车测力计上进行锻炼，每次锻炼30分钟，每周3次，共6周。我们将14名参与者分为HCE组（7名参与者）和VCE组（7名参与者）。工作量设定为每个参与者最大摄氧量（V.Opeak）的40%。电极放置在股四头肌和腘绳肌的每个运动点上。与VCE相比，使用HCE进行训练前后，V.Opeak和无氧阈值显著增加。在训练后测量中，HCE组在180度/秒时的伸展和屈曲肌肉力量相对于训练前测量有显著增加。与VCE组相比，HCE组在180度/秒时的屈膝肌肉力量有增加的趋势。与VCE组相比，HCE组的股四头肌横截面积显著增加。此外，在研究结束时，HCE组在运动过程中每5分钟测量一次的最大乳酸值在训练前后有显著下降。因此，对于每个参与者V.Opeak的40%的强度，HCE可能是一种比传统自行车运动在肌肉力量、肌肉质量和有氧功能方面更有效的训练方法。HCE不仅可以作为有氧运动应用，还可以作为阻力训练应用。
