Department of Health and Human Performance, University of Wisconsin-Platteville, Platteville, Wisconsin.
Applied Physiology Laboratory, Department of Kinesiology, Mississippi State University, Mississippi State, Mississippi.
J Strength Cond Res. 2021 Feb 1;35(Suppl 1):S152-S157. doi: 10.1519/JSC.0000000000002954.
Krings, BM, Shepherd, BD, Swain, JC, Turner, AJ, Chander, H, Waldman, HS, McAllister, MJ, Knight, AC, and Smith, JW. Impact of fat grip attachments on muscular strength and neuromuscular activation during resistance exercise. J Strength Cond Res 35(2S): S152-S157, 2021-The purpose of this study was to examine the acute effects of Fat Gripz (FG) on muscular activation and strength. Resistance trained men (n = 15; age = 22.4 ± 2.3 years; mass = 83.2 ± 11.1 kg) performed 2 experimental trials in a randomized order. Subjects completed 1 repetition maximum (1RM) testing with an Olympic barbell (OB) and with FG attached to an OB during the exercises of deadlift, bent-over row, upright row, concentration curl, and completed maximum repetitions of pull-ups until failure. Surface electromyography (EMG) was used to measure muscle activity from 8 upper extremity muscles (trapezius, medial deltoid, biceps brachii, triceps brachii, flexor carpi radialis, flexor carpi ulnaris, extensor carpi radialis, and extensor carpi ulnaris), while performing maximal voluntary isometric contractions during 1RM trials and while performing maximum number of pull-ups. When using the FG, 1RM strength was significantly decreased for each exercise, and the maximal number of pull-ups completed was significantly lower. Electromyography muscle activity was significantly increased in the forearm and shoulder muscles, but significantly decreased in the upper arm muscles with the use of FG during deadlift, bent-over row, and pull-ups. However, there were no differences for EMG activity for upright row and concentration curl. Differences in maximal strength, pull-up performance, and EMG activity with FG use may be due to the different muscle length positions. Although FG training may increase neuromuscular activation, decrements in muscular strength may result in prescribing low training loads that may not be ideal for building muscular strength.
克林斯、谢泼德、斯温、特纳、钱德勒、沃尔德曼、麦卡利斯特、奈特和史密斯。脂肪握把附件对阻力运动中肌肉力量和神经肌肉激活的影响。J 力量与调理研究 35（增刊 2）：S152-S157，2021-本研究的目的是研究 Fat Gripz（FG）对肌肉激活和力量的急性影响。受过阻力训练的男性（n = 15；年龄 = 22.4 ± 2.3 岁；体重 = 83.2 ± 11.1 kg）以随机顺序进行了 2 项实验试验。受试者使用奥林匹克杠铃（OB）和 FG 附加到 OB 进行 1 次重复最大（1RM）测试，进行硬拉、俯身划船、直立划船、集中弯举和完成引体向上的最大重复次数，直到失败。表面肌电图（EMG）用于测量 8 个上肢肌肉（斜方肌、三角肌内侧、肱二头肌、肱三头肌、桡侧腕屈肌、尺侧腕屈肌、桡侧伸腕肌和尺侧伸腕肌）的肌肉活动，同时进行 1RM 试验的最大自愿等长收缩和进行最大数量的引体向上。使用 FG 时，每项运动的 1RM 力量显着下降，完成的引体向上次数显着减少。在使用 FG 进行硬拉、俯身划船和引体向上时，前臂和肩部肌肉的肌电图肌肉活动显着增加，但在上臂肌肉中显着减少。然而，在进行直立划船和集中弯举时，EMG 活动没有差异。使用 FG 时最大力量、引体向上表现和 EMG 活动的差异可能是由于肌肉长度位置不同。虽然 FG 训练可能会增加神经肌肉激活，但肌肉力量的下降可能会导致规定较低的训练负荷，这可能不利于建立肌肉力量。
