不同路况中骑行者皮肤变形分析

Analysis on skin deformation of rider during cycling under different road conditions

为明确在不同路况和不同骑行动作下的皮肤变形量,针对人体在上坡、平地和下坡3种不同路况下的骑行姿势,分别提取4个关键骑行动作进行测试与分析。结果表明:下坡路况时的肩宽缩小程度最大,达-14.26%;平地和下坡路况下背宽的变化率在25%以上;腰围在骑行过程中增大,下坡路况时腰围变化最大,而上坡路况时最小;胸围、大腿围、小腿围的变化率都小于3%;人体的前上半身长都呈收缩状态,平地和下坡路况时变化率达-10%以上;后背长呈拉伸状态,但变化率不足5%;人体正面腰围线到小腿围线的总长减小,但人体侧面的腰围线到小腿围线的总长变化不大。

In order to explicit the skin deformation of a rider when cycling under different road conditions and body postures, four body postures under three different road conditions were analyzed. The skin deformation was measured during the process. Research results were as followed. The shoulder breadth reduced to - 14.26% under downhill condition, the back width increased to more than 25% under normal and downhill conditions, and the waist girth increased to the most under downhill condition and to least under uphill condition. The chest, thigh and calf girths changed no more than 3%. The front of upper body reduced in levels, and the deformation was more than - 10% under normal and downhill road conditions. The back of upper body increased no more than 5%. The front length from waistline to calfline was reduced, but its lateral length was not changed too much.