Exercise Sciences Department, Brigham Young University, 1000 N University Ave, Provo, UT, 84604, USA.
Exercise Sciences Department, Brigham Young University, 1000 N University Ave, Provo, UT, 84604, USA.
Phys Ther Sport. 2021 Jan;47:114-119. doi: 10.1016/j.ptsp.2020.11.028. Epub 2020 Nov 19.
To examine single bout and season long Achilles tendon cross-sectional area (CSA) changes before and after running during the early and late cross-country season.
OBSERVATIONAL: repeated measures design study.
Controlled laboratory setting.
This study consisted of 35 participants. The running group included 11 males and 9 females, the control group was 8 males and 7 females.
Diagnostic ultrasound images were taken before and after runners completed a common recovery run during the early and late cross-country season. Ultrasound images of control participants, who did not run, were taken following an averaged time that athletes spent running.
No significant tendon season long CSA increases occurred for runners (p = 0.453). Runners experienced significant Achilles tendon CSA decreases compared within subjects (p < 0.05) and between controls (p < 0.05). Significant CSA decreases occurred for runners during the early and late season run (p < 0.05) with greater percentages of decrease in the early season (p = 0.009). Male and female runners experienced similar CSA decreases while running (p = 0.696).
No Achilles tendon CSA increases occurred over the season. Significant Achilles tendon CSA decreases occurred while running during early and late season runs, but varied with larger CSA decreases occurring during the early season.
在越野赛季早期和晚期跑步前后，检查单次和整个赛季跟腱横截面积（CSA）的变化。
观察性：重复测量设计研究。
受控实验室环境。
本研究包括 35 名参与者。跑步组包括 11 名男性和 9 名女性，对照组包括 8 名男性和 7 名女性。
在越野赛季早期和晚期跑步后，对运动员进行常规恢复跑前后进行诊断超声检查。未跑步的对照组参与者在运动员平均跑步时间后接受了超声检查。
跑步者的跟腱整个赛季 CSA 没有显著增加（p=0.453）。与自身相比（p<0.05）和与对照组相比（p<0.05），跑步者的跟腱 CSA 均显著下降。跑步者在早期和晚期赛季跑步时均出现 CSA 显著下降（p<0.05），早期赛季的下降百分比更大（p=0.009）。男性和女性跑步者在跑步时经历了类似的 CSA 下降（p=0.696）。
整个赛季跟腱 CSA 没有增加。在早期和晚期赛季跑步时，跟腱 CSA 显著下降，但随着早期赛季 CSA 下降幅度更大而有所不同。
