短跑训练对运动员跟腱影响的超声测量研究

目的：研究短跑训练对运动员跟腱的影响。方法：选择从事运动训练4-6年的健康男、女短跑运动员为实验组（n=12）,同时选同龄健康非运动员男、女为对照组（n=12）,采用高频超声检测平静状态跟腱长度、横截面积,以及小腿三头肌等长收缩最大力量跖屈跟腱长度的变化。结果：跟腱长度：对照组男子168.5±9.2mm,女子162.4±9.8mm,实验组男子170.9±10.7mm,女子164.0±7.0mm。实验组和对照组组内、组间差别均无统计学意义。跟腱横截面积：对照组男子62.2±6.2mm2,女子47.1±4.5mm2,实验组男子65.6±2.9mm2,女子49.6±1.9mm2。同组内男子比女子跟腱横截面积大,差别有统计学意义（P＆lt;0.05）,但实验组和对照组组间差别无统计学意义。小腿三头肌等长收缩最大力跖屈时跟腱拉长值：对照组男子7.6±3.6mm,女子4.9±2.8mm,实验组男子11.1±2.9mm,女子7.9±3.1mm。男子比女子跟腱拉长值大、实验组比对照组拉长值大,差别均有统计学意义（P＆lt;0.05）。结论：短跑训练可增加跟腱可拉伸长度,跟腱的长度和横截面积未发生明显变化。高频超声可作为重要的测量手段用于...

Effect of Sprint Training on Achilles tendon in Athlete by High Frequency Ultrasonographic Measurement

Objective： To study effect of sprint training on Achilles tendon by high frequency ultrasonographic measurement. Methods： 24 healthy professional sprinters were divided into men and women experiment groups （n=12）, also 24 healthy non-athletes were divided into men and women control groups （n=12）. Then the Achilles tendon length, cross-sectional area and the changes in length during isometric triceps surae muscle contract efforts of each object were measured by high frequency ultrasound. Results： In male non-athletes, female non-athletes, male sprinters, female sprinters, the Achilles tendon length were 168.5± 9.2mm, 162.4 162.4± 9.8ram, 170.9± 10.7mm and 164.0± 7.0ram respectively and there were no significant differences between inter- and inner-groups. In the four group, the Achilles tendon cross-sectional area of were 62.2± 6.2mm2, 47.1 ± 4.5rnm~, 65.6：1： 2.9mm2 and 49.6± 1.9mm： respectively. Although both the Achilles tendon cross-sectional area of men in experimental or control group was large than that of women（P〈0.05 ）, but there was no significant difference between inter-groups. The changes in length of Achilles tendon during isometric ankle plantar flexion efforts of the groups were 7.6± 3.6mm,4.9± 2.8mm, 11.1 ± 2.9mm and 7.9± 3.1mm respectively. The changes in length of men were increased compare with that of women, also that of sprinters compare with that of non-athletes. Conclusions： After professional sprint training, the changes in length of Achilles tendon during isometric ankle plantar flexion efforts were increased. But the length and the cross-sectional area of Achilles tendon were not changed. High frequency ultrasonography can as a capable tool to study human Achilles tendon.