Muscle activation, peak velocity (PV) and perceived technical difficulty while using three grip variations and three loads during a deadlift exercise (DL) were examined. Twenty-nine resistance-trained athletes (15 males, age: 22.2 ± 2.7 years; 14 females, age: 24.8 ± 7.0 years) performed the DL with 50%, 70% and 90% of their one repetition maximum (1RM) using hook grip (HG), mixed grip (MG) and double overhand (DOH) grip. Surface electromyography (EMG) of the brachialis (BS), brachioradialis (BR) and flexor carpi ulnaris (FCU) was recorded. PV and perceived technical difficulty of each grip were also measured. Regardless of load and grip, females exhibited greater BS activation compared to males (p < 0.05; ES = 0.69) while males displayed greater BR activation, significant at 90% load (p < 0.01; ES = 1.01). MG elicited the least BR and FCU activation regardless of load and sex (p < 0.01; ES = 0.64-0.68) and was consistently ranked as the easiest grip for any load. Males achieved significantly greater PV than females at 50% and 70% (p < 0.01; ES = 1.72-1.92). Hand orientation did not significantly impact PV. A MG may be beneficial in reducing the overall perceived technical difficulty when performing a maximal DL. Athletes aiming to maximise muscle activation and potentially develop their grip strength should utilise a DOH grip or HG.

中文翻译：

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硬拉运动中的前臂肌电图活动受握力类型和性别的影响。

进行了肌肉锻炼，峰值速度（PV）和在硬拉运动（DL）期间使用三个抓地力变化和三个载荷的感知技术难度的检查。29名经过阻力训练的运动员（15名男性，年龄：22.2±2.7岁； 14名女性，年龄：24.8±7.0岁）使用钩子进行一次重复训练（1RM）的50％，70％和90％的DL抓地力（HG），混合抓地力（MG）和双顶手（DOH）抓地力。记录肱肌（BS），肱肱肌（BR）和尺侧腕腕（FCU）的表面肌电图（EMG）。还测量了每个握把的PV和感觉到的技术难度。无论负荷和抓地力如何，雌性都比雄性表现出更大的BS活化（p <0.05； ES = 0.69），而雄性表现出更大的BR活化，在90％的负荷下具有显着意义（p <0.01； ES = 1.01）。无论负荷和性别如何，MG引起的BR和FCU激活最少（p <0.01； ES = 0.64-0.68），并且始终被认为是任何负荷下最容易抓握的地方。在50％和70％时，男性的PV明显高于女性（p <0.01； ES = 1.72-1.92）。手向没有明显影响PV。在执行最大DL时，MG可能会有助于降低总体可感知的技术难度。旨在最大程度地激活肌肉并可能增强其握力的运动员，应使用DOH握力或HG。在执行最大DL时，MG可能会有助于降低总体可感知的技术难度。旨在最大程度地激活肌肉并可能增强其握力的运动员，应使用DOH握力或HG。在执行最大DL时，MG可能会有助于降低总体可感知的技术难度。旨在最大程度地激活肌肉并可能增强其握力的运动员，应使用DOH握力或HG。