Contralateral conditioning to the soleus H-reflex as a function of age and physical activity.
Contralateral conditioning to the soleus H-reflex as a function of age and physical activity.
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作为年龄和体力活动函数的比目鱼肌 H 反射的对侧调节。
DOI：
10.1007/s00221-015-4430-6
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发表时间：
2016
影响因子：
2
通讯作者：
Koceja,DavidM
中科院分区：
文献类型：
--
作者：
Ryder,RachelA;Kitano,Koichi;Phipps,AlanM;Enyart,MicahR;Koceja,DavidM
下肢同侧和对侧肌肉之间的协调在运动控制中起着关键作用。然而，衰老和体育活动在维持双侧协调中的作用尚未得到充分研究。本研究的目的是研究体力活动和年龄对比目鱼肌和胫前肌之间通路的影响。14名年轻人和14名老年人（7名活跃者，7名久坐者）参与了研究。在不同时间间隔（25-300 ms）对侧腓总神经进行条件刺激后，在同侧比目鱼肌中引发霍夫曼反射。与运动组相比，久坐组在50 ms（28.7%）、75 ms（24.5%）和150 ms（34.0%）间隔时的h反射促进值较对照组显著。年轻人和老年人之间也存在显著差异。结果表明，对侧条件作用导致比目鱼h反射兴奋性的差异，并强调了年龄和身体活动对维持这些神经通路的影响。
Coordination between ipsilateral and contralateral muscles of the lower limbs has a critical role in movement control. However, the roles that aging and physical activity have in maintaining bilateral coordination are understudied. The aim of this study was to examine the roles of physical activity and age on pathways between the soleus and tibialis anterior muscles. Fourteen young and 14 older subjects (7 active, 7 sedentary) participated. A Hoffmann (H)-reflex was elicited in the ipsilateral soleus following a conditioning stimulus to the contralateral common peroneal nerve at differing intervals (25–300 ms). Significant H-reflex facilitation from the control value was observed for the sedentary group at the 50-ms (28.7 %), 75-ms (24.5 %), and 150-ms (34.0 %) intervals when compared with the physically active group. There were also significant differences between the young and older groups. Results demonstrated differences in soleus H-reflex excitability as a result of contralateral conditioning and highlighted the influence of age and physical activity in maintaining these neural pathways.