| （1.School of Physical Education，Soochow University，Suzhou 215006，China；2.Department of Physical Education，Liyang Foreign Language School，Changzhou 213300，China） Abstract: By making a comparative study of the cross-sectional area and modulus of elasticity of the Achilles ten-don of sprinters and non-athletes, the authors found that as compared with non-athletes, sprinters’ Achilles tendon’s cross-sectional area is not significantly different, but their Achilles tendon’s modulus of elasticity is significant lar-ger, and the difference is significant, which indicates that the tendon being able to bear greater pressure after sprint training may be realized through the change of the internal structure in stead of though thickening and fattening.
Key words: sports physiology；sprint training；cross-sectional area of the achilles tendon；modulus of elasticity of the Achilles tendon
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