Intensity and generalization of treadmill slip training: High or low, progressive increase or decrease?
Intensity and generalization of treadmill slip training: High or low, progressive increase or decrease?
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DOI：
10.1016/j.jbiomech.2015.06.004
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发表时间：
2016-01-25
影响因子：
2.4
通讯作者：
Pai, Yi-Chung (Clive)
中科院分区：
文献类型：
--
作者：
Liu, Xuan;Bhatt, Tanvi;Pai, Yi-Chung (Clive)
本研究的目的是调查不同的跑步机滑训练协议的质量中心稳定性的反应性和主动控制转移到一个新的，地上滑的有效性。研究了四种训练方案：高强度（HI;所有跑步机打滑的加速度=12 m/s（2）），低强度（LO;所有跑步机滑动的加速度=6 m/s（2）），逐渐增加强度（INCR;在训练过程中，跑步机打滑的加速度从6 m/s（2）增加到12 m/s（2）），并逐渐降低强度（DECR;在训练过程中，跑步机打滑的加速度从12 m/s（2）降至6 m/s（2））。从36名年轻受试者中，9名被随机分配到每个训练方案（HI，LO，INCR和DECR）。在每个方案中，受试者在地面行走期间经历新的滑倒之前经历了一系列24次跑步机滑倒。将这些受试者的测量结果进行了组间比较，并与对照受试者（CARL，n=9）的数据进行了比较，对照受试者在先前实验中经历了一种新的地上滑倒，而没有进行跑步机训练。结果表明，与对照组相比，跑台滑行训练改善了对地上滑行的平衡控制，对受试者稳定性的反应控制（44.3%）的影响大于主动控制（27.1%）。HI比LO产生更强的泛化，而INCR仅略优于DECR。最后，稳定性的组平均值显示出从CTRL、LO、DECR、INCR到HI的明确升序。(C)2015爱思唯尔有限公司版权所有。
The purpose of this study was to investigate the efficacy of different treadmill slip training protocols on the transfer of reactive and proactive control of center of mass stability to a novel, over-ground slip. Four training protocols were investigated: high-intensity (HI; acceleration of all treadmill slips=12 m/s(2)), low-intensity (LO; acceleration of all treadmill slips=6 m/s(2)), progressively increasing intensity (INCR; acceleration of treadmill slips increasing from 6 m/s(2) to 12 m/s(2) over the course of training), and progressively decreasing intensity (DECR; acceleration of treadmill slips decreasing from 12 m/s(2) to 6 m/s(2) over the course of training). From a pool of 36 young subjects, nine were randomly assigned to each training protocol (HI, LO, INCR, and DECR). In each protocol, subjects underwent a series of 24 treadmill slips before they experienced a novel slip during over-ground walking. Measures from these subjects were compared across groups and to data from control subjects (CARL, n=9) who had experienced a novel over-ground slip without treadmill training as part of a previous experiment. The results showed that treadmill slip training improved balance control on over-ground slip and had a larger effect on subjects' reactive control of stability (44.3%) than on proactive control (27.1%) in comparison with the CTRL group. HI yielded stronger generalization than LO, while INCR was only marginally better than DECR. Finally, the group means of stability displayed a clear ascending order from CTRL, LO, DECR, INCR, to HI. (C) 2015 Elsevier Ltd. All rights reserved.