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Omoto M, Tsukada Y, Hashida R, Matsuse H, Tajima H, Iwanaga S, Takano Y, Nago T, Tagawa Y, Shiba N. Effect of Cycling Exercise Resisting Electrically Stimulated Antagonist Muscle Contractions in Healthy Males. Metabolites 2023; 13:metabo13050604. [PMID: 37233645 DOI: 10.3390/metabo13050604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 03/26/2023] [Accepted: 03/31/2023] [Indexed: 05/27/2023] Open
Abstract
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.O2peak). Electrodes were placed over each motor point on the quadriceps and hamstrings. The V.O2peak 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.O2peak than conventional cycling exercise. HCE could be applied not only as aerobic exercise but also as resistance training.
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Affiliation(s)
- Masayuki Omoto
- Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
| | - Yuya Tsukada
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
| | - Ryuki Hashida
- Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
| | - Hiroo Matsuse
- Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
| | - Hiroshi Tajima
- Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
| | - Sohei Iwanaga
- Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
| | - Yoshio Takano
- Department of Physical Therapy, School of Health Sciences, International University of Health and Welfare, Okawa 831-8501, Fukuoka, Japan
| | - Takeshi Nago
- Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
| | - Yoshihiko Tagawa
- Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
| | - Naoto Shiba
- Department of Orthopedics, Kurume University School of Medicine, Kurume 830-0011, Fukuoka, Japan
- Rehabilitation Center, Kurume University, Kurume 830-0011, Fukuoka, Japan
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