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Muscle fatigue based evaluation of bicycle design

机译:基于肌肉疲劳的自行车设计评估

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摘要

Bicycling posture leads to considerable discomfort and a variety of chronic injuries. This necessitates a proper bicycle design to avoid injuries and thereby enhance rider comfort. The objective of this study was to investigate the muscle activity during cycling on three different bicycle designs, i.e., rigid frame (RF), suspension (SU) and sports (SP) using surface electromyography (sEMG). Twelve male volunteers participated in this study. sEMG signals were acquired bilaterally from extensor carpi radialis (ECR), trapezius medial (TM), latissimus dorsi medial (LDM) and erector spinae (ES), during 30 min of cycling on each bicycle and after cycling. Time domain (RMS) and frequency domain (MPF) parameters were extracted from acquired sEMG signals. From the sEMG study, it was found that the fatigue in right LDM and ES were significantly (p < 0.05) higher in SP bicycle. This was corroborated by a psychophysical assessment based on RBG pain scale. The study also showed that there was a significantly lesser fatigue with the SU bicycle than the RF and SP bicycles.
机译:骑车姿势会导致相当大的不适和各种慢性伤害。这需要适当的自行车设计来避免受伤,从而提高骑手的舒适度。这项研究的目的是使用表面肌电图(sEMG)研究三种不同自行车设计(即刚性车架(RF),悬架(SU)和运动(SP))在骑行过程中的肌肉活动。十二名男性志愿者参加了这项研究。 sEMG信号是在每辆自行车骑行30分钟和骑自行车后从from腕伸肌(ECR),斜方肌(TM),背阔肌(LDM)和竖脊肌(ES)双向获取的。从采集的sEMG信号中提取时域(RMS)和频域(MPF)参数。通过sEMG研究,发现正确的LDM和ES的疲劳程度在SP自行车中显着提高(p <0.05)。基于RBG疼痛量表的心理生理评估证实了这一点。研究还表明,SU自行车的疲劳度明显低于RF和SP自行车。

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