...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of athletic training >Skin Cooling and Force Replication at the Ankle in Healthy Individuals: A Crossover Randomized Controlled Trial
【24h】

Skin Cooling and Force Replication at the Ankle in Healthy Individuals: A Crossover Randomized Controlled Trial

机译：健康个体脚踝处的皮肤冷却和力量复制：交叉随机对照试验

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

摘要

Context: Proprioception of the ankle is determined by the ability to perceive the sense of position of the ankle structures, as well as the speed and direction of movement. Few researchers have investigated proprioception by force-replication ability and particularly after skin cooling. Objective: To analyze the ability of the ankle-dorsiflexor muscles to replicate isometric force after a period of skin cooling. Design: Randomized controlled clinical trial. Setting: Laboratory. Patients or Other Participants: Twenty healthy individuals (10 men, 10 women; age = 26.8 ± 5.2 years, height = 171 ± 7 cm, mass = 66.8 ± 10.5 kg). Intervention(s): Skin cooling was carried out using 2 ice applications: (1) after maximal voluntary isometric contraction (MVIC) performance and before data collection for the first target force, maintained for 20 minutes; and (2) before data collection for the second target force, maintained for 10 minutes. We measured skin temperature before and after ice applications to ensure skin cooling. Main Outcome Measure(s): A load cell was placed under an inclined board for data collection, and 10 attempts of force replication were carried out for 2 values of MVIC (20%, 50%) in each condition (ice, no ice). We assessed force sense with absolute and root mean square errors (the difference between the force developed by the dorsiflexors and the target force measured with the raw data and after root mean square analysis, respectively) and variable error (the variance around the mean absolute error score). A repeated-measures multivariate analysis of variance was used for statistical analysis. Results: The absolute error was greater for the ice than for the no-ice condition (F1,19 = 9.05, P = .007) and for the target force at 50% of MVIC than at 20% of MVIC (F1,19 = 26.01, P < .001). Conclusions: The error was greater in the ice condition and at 50% of MVIC. Skin cooling reduced the proprioceptive ability of the ankle-dorsiflexor muscles to replicate isometric force.
机译：背景：踝关节的本体感觉由感知踝关节结构位置感的能力以及运动的速度和方向决定。很少有研究者通过力复制能力来研究本体感受，尤其是在皮肤冷却后。目的：分析经过一段时间的皮肤冷却后，踝-背屈肌复制等轴测力的能力。设计：随机对照临床试验。地点：实验室。患者或其他参与者：20名健康个体（10名男性，10名女性;年龄= 26.8±5.2岁，身高= 171±7 cm，体重= 66.8±10.5 kg）。干预：使用2次冰敷进行皮肤降温：（1）在最大自主等距收缩（MVIC）性能之后以及在收集第一个目标力的数据之前，保持20分钟; （2）在第二次目标力量的数据收集之前，保持10分钟。我们测量了冰敷前后的皮肤温度，以确保皮肤冷却。主要指标：将称重传感器放置在倾斜的板下进行数据收集，并在每种情况下（冰，无）对2种MVIC值（20％，50％）进行10次力复制尝试。冰）。我们用绝对和均方根误差（背屈屈肌产生的力与用原始数据测得的目标力之间的差，以及用均方根分析后的均值）和可变误差（均值绝对误差周围的方差）评估力感得分了）。方差的重复测量多元分析用于统计分析。结果：冰的绝对误差大于无冰条件（F1,19 = 9.05，P = .007），并且在MVIC为50 ％时的目标力比在MVIC为20 ％时的目标误差更大（F1， 19 = 26.01，P <.001）。结论：在冰况下，MVIC为50％时，误差较大。皮肤冷却降低了踝背屈肌复制等轴测力的本体感受能力。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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