基于表面肌电的腰枕大小对坐姿舒适性影响的研究

随着科学技术在工作环境中应用的增多,固定姿势的影响及其导致的健康问题日益突出。在影响坐姿健康的诸多因素中非常重要的一点就是腰部支撑。本文利用表面肌电镀术,采用主观评价与客观测试相结合的方法,分析评价了腰枕大小对坐姿舒适性的影响,为从人体工程学的角度合理优化沙发腰部支撑设计提供了理论依据。研究结果表明,中等型号的腰枕可以使人体获得较好的坐姿;过大或过小的腰枕都不利于人体坐姿的保持。同时,实验研究还表明,表面肌电指标值IEMG和MPF可以较好地反映坐姿舒适性,二者结合使用可以达到较大地评价沙发使用舒适性的目的。

Study on the Influence of Lumbar Pillow Size on Sitting Comfort based on SEMG

Along with the application of science and technology in the work environment,fixed posture and its resulting health problems have become increasingly prominent.An all-important aspect in many factors of sitting health is waist support.By using surface electromyography technology and subjective evaluation,the paper analyzed and evaluated the effect of pillow size supporting lumbar on the sitting comfort,and provided a theoretical basis for reasonably optimizing sofa waist support design from ergonomically perspective.The results showed that the moderate pillow size supporting lumbar could help people maintain better sitting condition.In the case that the pillow size is too large or too small,it would make against the body to maintain sitting.Meanwhile,experimental studies also show that IEMG (integrated electromyogram, IEMG) and MPF (mean power frequency,MPF) could reflect sitting comfort well,and a combination of IEMG and MPF could achieve the purpose of evaluating sofa comfort better.