用于减少腰背痛发病率的可穿戴弯腰助力装置

Wearable Stoop-assist Device in Reducing Incidence of Low Back Pain

根据人体生物力学,建立人体弯腰时的静力平衡模型,并在此基础上开发一种用于减轻背部竖脊肌负担的可穿戴弯腰助力装置(WSAD),通过肌电(EMG)实验验证装置的有效性。实验结果表明,当人穿上助力装置向前弯腰到90°时,胸竖脊肌、腰竖脊肌、背阔肌、腹直肌的助力比为43%、48%、32%、14%。助力装置能减轻人体弯腰时背部竖脊肌的负担,从而减少腰背痛发病率,有利于长时间弯腰工作的劳动者。

According to human biomechanics the ideal static equilibrium model of stooped human body was built, based on which a wearable stoop-assist device（WSAD） as an intervention to reduce the load on the erector spinae was developed. Electromyography（EMG） experiments were conducted to evaluate the effectiveness of the WSAD. Results showed that the integrated EMG of the thoracic erector spinae（TES）, the lumbar erector spinae（LES）, the latissimus dorsi（LD） and the rectus abdominis（RA） were reduced by 43%, 48%, 32% and 14% respectively, when Sagittal trunk bent forward to 90o from the vertical. Therefore, by reducing back erector spinae activity, the WSAD could reduce the incidence of developing LBP for those who adopt the prolonged stooped posture in work.