采用无接触式激光三维足型扫描仪对97名足部无疾病和损伤史的田径运动员进行足部扫描,获取受试者在0体重负重(简称0BW)、单足站立1/2体重负重(简称1/2BW)、单足站立全部体重负重(简称1BW)和单足站立全部体重加20 kg负重(简称1BW+20 kg)四个不同载荷情况下的足部外形特征及变化。研究认为不同载荷压力对足部外形变化有一定影响;我国青年田径运动员的足长、足宽、内踝高、外踝高、内侧纵弓高等指标容易因载荷的不同而产生明显变化;我国青年田径运动员的足面长、足跟宽、跖趾斜宽角、自然前翘角等指标不易受到载荷变化的影响;我国青年田径运动员的内侧纵弓长、外侧纵弓长、第一跖趾高、足背高、拇趾偏角、足跟面积等指标在一定载荷范围内变化明显,但超过承重范围则不再因载荷增大而变化。 A total of 97 foot athletes with no history of disease and injury were scanned by foot with a non-contact laser 3D foot scanner. The weight and weight of the athletes at 0 weight (0BW) Referred to as 1 / 2BW), foot standing all the weight and weight (referred to as 1BW) and one foot standing full weight plus 20 kg load (1BW +20 kg) under four different foot load shape characteristics and changes. The study shows that different load pressures have some influence on the changes of foot shape. The young athletes in our country tend to have significant changes in foot length, foot width, medial malleolus, lateral malleolus and medial longitudinal arch, Foot length, heel width, metatarsophalangeal angle, natural angle before the angle and other indicators are not easily affected by changes in load; the length of the medial longitudinal arch of the young athletes in China, lateral long arch, the first metatarsal height, foot Back height, flip angle, heel area and other indicators vary significantly within a certain load range, but beyond the load-bearing range is no longer due to load changes.