本研究检查了短跑运动员的跟腱 (AT) 长度与 100 米短跑时间之间的关系。使用磁共振成像测量了 48 名训练有素的短跑运动员中小腿三头肌 3 个不同部分的 AT 长度。3 个 AT 长度分别计算为从跟骨结节到比目鱼肌、腓肠肌内侧肌和腓肠肌外侧肌肌腱交界处的距离。绝对 3 AT 长度与个人最佳 100 米冲刺时间没有显着相关性（r = -.023 到 .064，所有Ps > .05)。此外，为了尽量减少参与者之间腿长的差异，将 3 个 AT 长度标准化为小腿长度，并且相对 3 个 AT 长度与个人最佳 100 米冲刺时间没有显着相关性（r = .023 到 .102 , 所有P s > .05)。此外，在 AT 的绝对和相对（标准化为体重）横截面积与个人最佳 100 米冲刺时间之间没有观察到显着相关性（分别为r = .012 和 .084，P s > .05 ）。这些发现表明，包括长度在内的 AT 形态变量可能与短跑运动员的 100 米短跑时间无关。

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Achilles Tendon Length Is Not Related to 100-m Sprint Time in Sprinters

This study examined the relationship between Achilles tendon (AT) length and 100-m sprint time in sprinters. The AT lengths at 3 different portions of the triceps surae muscle in 48 well-trained sprinters were measured using magnetic resonance imaging. The 3 AT lengths were calculated as the distance from the calcaneal tuberosity to the muscle–tendon junction of the soleus, gastrocnemius medialis, and gastrocnemius lateralis, respectively. The absolute 3 AT lengths did not correlate significantly with personal best 100-m sprint time (r = −.023 to .064, all Ps > .05). Furthermore, to minimize the differences in the leg length among participants, the 3 AT lengths were normalized to the shank length, and the relative 3 AT lengths did not correlate significantly with personal best 100-m sprint time (r = .023 to .102, all Ps > .05). Additionally, no significant correlations were observed between the absolute and relative (normalized to body mass) cross-sectional areas of the AT and personal best 100-m sprint time (r = .012 and .084, respectively, both Ps > .05). These findings suggest that the AT morphological variables, including the length, may not be related to superior 100-m sprint time in sprinters.