(1.School of Medicine，Shaoxing University，Shaoxing 312000，China；
2.School of Teacher，Jinhua Polytechnic，Jinhua 321017，China；
3.School of Physical Education and Health Sciences，Zhejiang Normal University，Jinhua 321004，China)
Abstract: To study the acute effect of static stretching on human arterial stiffness, compare the effects of three dif-ferent stretching modes on arterial stiffness. 39 healthy young subjects (18 males and 21females) completed three acute static stretching in three separate sessions (unilateral calf stretching, unilateral thigh stretching, and bi-lateral thighs stretching alternately), and cardio-ankle vascular index (CAVI), blood pressure and heart rate of par-ticipants were measured before stretching and 0, 15 min, 30 min, 45 min and 60 min after stretching. The results show that: (1) the CAVI decreased significantly after three kinds of static stretching, and CAVI of both left and right sides of male and female immediately after stretching and 15 min were lower than those before stretching, and the 30 min and 45 min of unilateral thigh stretching and bilateral alternating thigh stretching were still lower than those before stretching. (2) There were significant differences in effects of the 3 stretching methods, and at immediately and 15 min after stretching, the CAVI of unilateral and bilateral thigh stretching in males was lower than that of unilateral calf stretching, and CAVI of female bilateral thigh stretching was lower than that of unilateral calf stretching and unilateral thigh stretching. Conclusion: static stretching with low load of cardiovascular system can reduce arterial stiffness, and the effect is as follows: bilateral alternating thigh stretch > unilateral thigh stretch > unilateral calf stretching. Among them, the effect of bilateral alternate thigh stretching to reduce arterial stiffness can at least maintain 45 min.
Key words: sports physiology；static stretching；arterial stiffness；healthy youth；exercise intervention；acute effects