Conditioned patellar tendon reflexes in sprint- and endurance-trained athletes.
Conditioned patellar tendon reflexes in sprint- and endurance-trained athletes.
复制标题
短跑和耐力训练运动员的条件性髌腱反射。
DOI：
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发表时间：
1988
影响因子：
4.1
通讯作者：
G. Kamen
中科院分区：
文献类型：
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作者：
D. Koceja;G. Kamen
肌腱反射的特点进行了检查，在耐力训练，短跑训练，和对照组（10 SS/组）使用条件髌腱反射（PTR）的范例。使用0、25、50、75、150和300 ms的叩击间隔进行成对PTR，首先引发左腿反射，然后是右腿PTR。使用固定在踝关节处的力传感器测量峰值力、达到峰值力的时间和反射潜伏期。在单侧条件下，运动组之间存在显著差异（P <0.05），短跑训练的运动员表现出更大的峰值力量，更快的时间达到峰值力量，更快的反射潜伏期比耐力运动员。条件反射也存在显著性差异（P <0.05）。有轻微的抑郁症的反射参数在未经训练和短跑训练组的间隔为50毫秒。在以后的间隔（大于50毫秒），一个显着的增强发生在所有组的所有相关措施研究。这种较长的潜伏期兴奋效应持续到150 ms间期。在接受耐力和短跑训练的个体中，简单反射和条件反射的这些差异可能反映了肌肉肌腱硬度或神经组织的固有差异。
Tendon reflex characteristics were examined in endurance-trained, sprint-trained, and control subjects (10 SS/group) using a conditioned patellar tendon reflex (PTR) paradigm. Paired PTRs were administered using inter-tap intervals of 0, 25, 50, 75, 150, and 300 ms, with the left leg reflex elicited first, followed by a right leg PTR. A force transducer secured at the ankle was used to measure peak force, time to peak force, and reflex latency. In the unilateral condition, significant differences (P less than 0.05) existed between athletic groups, with the sprint-trained athletes exhibiting greater peak force, faster time to peak force, and faster reflex latency than the endurance athletes. Significant differences (P less than 0.05) also existed for the conditioned reflex. There was a slight depression in reflex parameters in the untrained and sprint-trained groups up to an interval of 50 ms. At later intervals (greater than 50 ms), a marked enhancement occurred in all groups for all dependent measures studied. This longer latency excitatory effect persisted until the 150 ms interval. These differences in both simple and conditioned reflexes in individuals trained for endurance and sprint activities may reflect inherent differences in muscle-tendon stiffness or neural organization.