Muscle Activation and Intermuscular Coherence during Forward and Backward Pedaling

Mei-Yi Lee ； Ray-Yau Wang ； Shu-Shyuan Hsu ； Wen-Wen Yang ； Shu-Shi Chen ； Yea-Ru Yang

《The Chinese Journal of Physiology》 63卷2期 (2020/04) Pp. 85-89

https://doi.org/10.4103/CJP.CJP_82_19

摘要

The purpose of this study was to investigate muscle activity and intermuscular coherence of the rectus femoris (RF) and biceps femoris (BF) during forward (FW) and backward (BW) pedaling. Sixteen healthy volunteers performed FW and BW pedaling in 30, 45, and 60 revolutions per minute (RPM), while electromyographic (EMG) signals of the RF and BF were recorded bilaterally to determine integral EMG and intermuscular coherence. BW pedaling showed a statistically significant larger EMG activity on the left BF (P = 0.023) in 30 RPM; on the left BF (P = 0.01), right BF (P = 0.05), and right RF (P = 0.006) in 45 RPM, and on the left BF (P = 0.014) and right RF (P = 0.011) in 60 RPM than FW pedaling. In 45 RPM, higher coherence was demonstrated on the left leg (P = 0.011) during the left flexor and right extensor phases and on the right leg (P = 0.043) during the right flexor and left extensor phases in BW compared with FW pedaling. In 60 RPM, higher coherence was observed on both legs (left, P = 0.037; right, P ＜ 0.001) during the left flexor and right extensor phases in BW compared with FW pedaling. Our results suggest that BW pedaling increased the muscle activity of both biarticular muscles and intermuscular coherence.

關鍵字

Backward pedaling ； electromyography ； intermuscular coherence ； knee extensors ； knee flexors

參考文獻

Bouaziz W, Schmitt E, Kaltenbach G, Geny B, Vogel T. Health benefits of cycle ergometer training for older adults over 70: A review. Eur Rev Aging Phys Act 2015;12:8.

Kautz SA, Duncan PW, Perera S, Neptune RR, Studenski SA. Coordination of hemiparetic locomotion after stroke rehabilitation. Neurorehabil Neural Repair 2005;19:250-8.

Tang A, Sibley KM, Thomas SG, Bayley MT, Richardson D, McIlroy WE, et al. Effects of an aerobic exercise program on aerobic capacity, spatiotemporal gait parameters, and functional capacity in subacute stroke. Neurorehabil Neural Repair 2009;23:398-406.

Nadeau A, Lungu O, Duchesne C, Robillard MÈ, Bore A, Bobeuf F, et al. A 12-week cycling training regimen improves gait and executive functions concomitantly in people with Parkinson’s disease. Front Hum Neurosci 2016;10:690.

Hug F, Dorel S. Electromyographic analysis of pedaling: A review. J Electromyogr Kinesiol 2009;19:182-98.