Transverse forces in skeletal muscle with massage-like loading in a rabbit model.
Transverse forces in skeletal muscle with massage-like loading in a rabbit model.
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DOI：
10.1186/1472-6882-14-393
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发表时间：
2014-10-13
影响因子：
--
通讯作者：
Zhao Y
中科院分区：
文献类型：
--
作者：
Best TM;Crawford SK;Haas C;Charles L;Zhao Y
本研究的目的是量化骨骼肌在偏心运动(ECC)后承受恒定压缩推拿式负荷(MLL)的横向力。28只新西兰白兔被用于这项由两部分组成的研究。在所有测试中，使用定制的机电设备对胫骨前(TA)肌施加恒定的压力MLL，并对所产生的横向力进行量化。该装置由两个相互垂直放置的步进电机组成，并连接到单独的滑轨上。一个不锈钢圆柱形按摩头被安装在一个定制的两轴传感器上，该传感器由两个应变片组成，用来测量沿两个轴的力。首先，我们确定了组织加载频率和压缩幅度对TA中横向力的影响。在一次体外循环后，16只兔被随机分配到一个方案，其MLL频率为0.25兆赫兹或0.5兆赫兹，恒定压力为5N或10兆赫兹。其次，我们使用0.5兆赫兹、10兆氮、15兆赫兹的方案，从体外循环后立即开始连续4天(n = 6动物)或体外循环后48小时(n = 6动物)进行。在即刻组和延迟组的所有4次MLL过程中，在整个15分钟的持续时间内测量横向力。MLL产生的压力的频率和大小都对横向力的大小有影响(p <；每个参数的 0.05)。此外，ECC后立即开始的MLL产生的横向力比延迟48小时的MLL产生的横向力更大，两组MLL之间在四天方案中的平均差异为20%。与两组所有MLL比赛的前5分钟相比，中场5分钟的力量更高。MLL的频率和大小以及ECC后MLL的交付时机会影响运动肌肉的横向力值。我们的发现在运动后接受按摩的人类身上的应用目前尚不清楚。
The objective of this study was to quantify the transverse forces in skeletal muscle subjected to constant compressive massage-like loading (MLL) following eccentric exercise (ECC). Twenty-eight New Zealand White rabbits were used for this two-part study. For all testing, a customized electromechanical device was utilized to apply a constant compressive force MLL to the tibialis anterior (TA) muscle and the resultant transverse forces were quantified. The device consisted of two stepper motors that were positioned orthogonally to each other and connected to separate sliding tracks. A stainless steel cylindrical massage tip was mounted to a customized two-axis sensor consisting of two strain gauges with which forces along the two axes were measured. First, we determined the effects of tissue loading frequency and compression magnitude on transverse forces in the TA. Following a bout of ECC, sixteen rabbits were randomly assigned to a protocol with MLL frequency of 0.25 Hz or 0.5 Hz at a constant compressive force of 5 N or 10 N. Secondly, we utilized a protocol of 0.5 Hz, 10 N, 15 min MLL that was performed on 4 consecutive days commencing immediately post ECC (n = 6 animals) or 48 hours following ECC (n = 6 animals). Transverse forces were measured during all 4 MLL sessions for the entire 15 min duration for both the immediate and the delayed groups. Both frequency and magnitude of compressive force due to MLL showed an effect on the magnitude of transverse force (p < 0.05 for each parameter). Furthermore, MLL beginning immediately following ECC produced higher transverse forces than MLL delayed by 48 hours with an average 20% difference between the two MLL groups over the four day protocol. Forces were higher in the middle 5 minutes compared to the first 5 minutes for all MLL bouts in both groups. Frequency and magnitude of MLL and timing for delivery of MLL following ECC affect resultant transverse force values for exercised muscle. The application of our findings to humans receiving massage following exercise remains unknown at this time.
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影响因子：
4.1
作者：
Butterfield TA;Zhao Y;Agarwal S;Haq F;Best TM
通讯作者：
Best TM
影响因子：
17.1
作者：
Crane, Justin D.;Ogborn, Daniel I.;Tarnopolsky, Mark A.
通讯作者：
Tarnopolsky, Mark A.
影响因子：
2.6
作者：
Rapaport, Mark Hyman;Schettler, Pamela;Bresee, Catherine
通讯作者：
Bresee, Catherine
影响因子：
4.1
作者：
Haas C;Butterfield TA;Abshire S;Zhao Y;Zhang X;Jarjoura D;Best TM
通讯作者：
Best TM
DOI：
10.2519/jospt.1994.19.2.93
发表时间：
1994-02-01
影响因子：
6.1
作者：
SMITH, LL;KEATING, MN;ISRAEL, RG
通讯作者：
ISRAEL, RG