Neuromuscular function during therapeutic knee exercise under water and on dry land.
Neuromuscular function during therapeutic knee exercise under water and on dry land.
复制标题
水下和陆地上治疗性膝关节锻炼期间的神经肌肉功能。
DOI：
10.1053/apmr.2001.25073
复制
发表时间：
2001
影响因子：
4.3
通讯作者：
E. Mälkiä
中科院分区：
文献类型：
--
作者：
T. Pöyhönen;K. Keskinen;H. Kyröläinen;Arto J Hautala;J. Savolainen;E. Mälkiä
目标
比较在水下和陆地上赤脚和穿着Hydro靴子（增加额部面积）进行膝关节伸展-屈曲运动时的肌肉活动和阻力。
设计
参与者坐在水下的电梯椅上进行练习。
设置
水疗池。
参与者
18名健康人（10名女性，8名男性）。
干预措施
不适用因
主要观察指标
用测力计测量等速和等长肌力。记录股四头肌（股内侧肌、股外侧肌）和腘绳肌（股二头肌）的肌电活动。利用通用流体方程计算了运动范围内的水下阻力。
结果
水下肌电图模式显示早期减少的同心活动的激动剂与巧合激活的拮抗剂。此外，两种水下条件下的肌电图振幅相似，但Hydro靴子产生的阻力水平高于赤脚条件下的阻力水平（p <0.001）。正如预期的那样，在大多数情况下，陆地上的力高于水下阻力（p <0.001）。然而，在屈曲时，Hydro靴子和等速力的峰值阻力没有差异。
结论
使用Hydro靴子增加小腿的前部区域显著增加了水阻力水平，从而提供接近在干燥土地上测量的屈曲力。这种类型的水中训练提供刺激，以提高神经肌肉系统的功能能力和性能。此外，必须考虑影响运动肢体的流体动力学原理和力，以确保适当的进展。
OBJECTIVES
To compare muscle activity and resistive drag force during knee extension-flexion exercises while barefoot and while wearing a Hydro Boot (increased frontal area) both under water and on dry land.
DESIGN
Participants performed the exercises while seated on an elevator chair under water.
SETTING
A hydrotherapy pool.
PARTICIPANTS
Eighteen healthy persons (10 women, 8 men).
INTERVENTIONS
Not applicable.
MAIN OUTCOME MEASURES
Isokinetic and isometric forces were measured with a dynamometer. The electromyographic activity of the quadriceps (vastus medialis, vastus lateralis) and hamstring muscles (biceps femoris) was recorded. The underwater drag for the range of motion was calculated by using the general fluid equation.
RESULTS
The underwater electromyographic patterns showed an early decrease in the concentric activity of the agonists with coincidental activation of the antagonists. In addition, the electromyographic amplitudes were similar between the 2 underwater conditions, but the Hydro Boot produced a higher level (p < .001) of drag than did the barefoot condition. As expected, in most cases the forces on dry land were higher (p < .001) than underwater drag. In flexion, however, the peak drag with Hydro Boot and isokinetic force did not differ.
CONCLUSIONS
Increasing the frontal area of the lower leg with a Hydro Boot significantly increased the level of water resistance, thus, providing flexion forces that approach those measured on dry land. This type of water training offers stimulation to enhance the functional capacity and performance of the neuromuscular system. In addition, hydrodynamic principles and forces that influence the exercising limb must be considered to ensure appropriate progression.