• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Sports Science and Medicine >Acute Effects of Short-Term Local Tendon Vibration on Plantar Flexor Torque, Muscle Contractile Properties, Neuromuscular and Brain Activity in Young Athletes
【24h】

Acute Effects of Short-Term Local Tendon Vibration on Plantar Flexor Torque, Muscle Contractile Properties, Neuromuscular and Brain Activity in Young Athletes

机译：短期局部肌腱振动对幼儿园屈曲扭矩，肌肉收缩性质，年轻运动员的神经肌肉和大脑活动的急性作用

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The purpose of this study was to examine the acute effects of short-term Achilles tendon vibration on plantar flexor torque, twitch contractile properties as well as muscle and cortical activity in young athletes. Eleven female elite soccer players aged 15.6 ± 0.5 years participated in this study. Three different conditions were applied in randomized order: Achilles tendon vibration (80 Hz) for 30 and 300 s, and a passive control condition (300 s). Tests at baseline and following conditions included the assessment of peak plantar flexor torque during maximum voluntary contraction, electrically evoked muscle twitches (e.g., potentiated twitch peak torque [PT]), and electromyographic (EMG) activity of the plantar flexors. Additionally, electroencephalographic (EEG) activity of the primary motor and somatosensory cortex were assessed during a submaximal dynamic concentric-eccentric plantar flexion exercise using an elastic rubber band. Large-sized main effects of condition were found for EEG absolute alpha-1 and beta-1 band power (p ≤ 0.011; 1.5 ≤ d ≤2.6). Post-hoc tests indicated that alpha-1 power was significantly lower at 30 and 300 s (p = 0.009; d = 0.8) and beta-1 power significantly lower at 300 s (p & 0.001; d = 0.2) compared to control condition. No significant effect of condition was found for peak plantar flexor torque, electrical evoked muscle twitches, and EMG activity. In conclusion, short-term local Achilles tendon vibration induced lower brain activity (i.e., alpha-1 and beta-1 band power) but did not affect lower limb peak torque, twitch contractile properties, and muscle activity. Lower brain activity following short-term local Achilles tendon vibration may indicate improved cortical function during a submaximal dynamic exercise in female young soccer players.
机译：本研究的目的是检查短期Achilles肌腱振动对幼儿园屈肌扭矩，抽搐收缩性能以及年轻运动员的肌肉和皮质活动的急性作用。 11岁的女性精英足球运动员参加了这项研究的15.6±0.5岁。三种不同的条件以随机顺序应用：肌腱肌振动（80Hz）30和300秒，和被动控制条件（300秒）。在基线和以下条件下的测试包括在最大自愿收缩期间的峰值Plantar屈肌扭矩的评估，电诱发肌肉抽搐（例如，调节的抽搐峰值扭矩[Pt]）和跖屈的肌电（EMG）活性。另外，在使用弹性橡皮筋的潜水混合动态同心偏心跖屈弯曲锻炼期间评估初级电机和躯体感应rotex的脑电图（EEG）活性。发现eEG绝对α-1和β-1带功率的大尺寸主要效果（P≤0.011;1.5≤d≤2.6）。后HOC测试表明，在30和300秒（P = 0.009; d = 0.8）下，α-1功率显着降低（P = 0.009; d = 0.8），并且与控制相比，300s（P <0.001; d = 0.2）明显降低状况。发现峰值Purtorar屈肌扭矩，电诱发肌肉抽搐和EMG活性没有明显的病症效果。总之，短期局部阿基里斯肌腱振动诱导下脑活动（即，α-1和β-1带电力），但不影响下肢峰值扭矩，抽搐收缩性能和肌肉活动。短期局部阿基血管肌腱振动后的脑活动可能表示在女性幼小足球运动员中的潜水动态锻炼期间改善皮质功能。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号