Comparison of the effects of deadlift versus back squat on jumping, acceleration, and change of direction

IF 0.6 4区医学 Q4 ENGINEERING, BIOMEDICAL

Isokinetics and Exercise Science Pub Date : 2022-09-28 DOI:10.3233/ies-220068

Junpei Shiba, R. Kuramochi, Gaku Tokutake, Shota Enoki, Yuta Nakamura, Yukitoshi Kotoh

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引用次数: 1

Abstract

BACKGROUND: An advantage that deadlift (DL) has over back squat (BSQ) is that the latter requires additional equipment (i.e., squat rack). Accordingly, if DL can lead to positive effects on jumping, acceleration, and change of direction, DL could present as a more practical training exercise than that of BSQ. OBJECTIVE: This study aimed to compare the effects of DL and BSQ on jumping, acceleration, and change of direction. METHODS: Twenty-three men (12 in the DL group [age: 20.3 ± 1.4 years old, height: 169.6 ± 6.7 cm, body weight: 65.7 ± 11.2 kg] and 11 in the BSQ group [age: 20.2 ± 1.9 years old, height: 171.5 ± 4.8 cm, body weight: 70.1 ± 6.8 kg]) participated in this study. The participants performed five repetitions maximum (RM) of DL and BSQ, and the isokinetic strength of hip joint extension, muscle thickness of the gluteus maximus and hamstrings, countermovement jump (CMJ) height, 10 m sprint time, and T-test results were measured. The 1RM was estimated using the 5RM and normalized to body weight (BW). Both groups performed supervised DL and BSQ training for eight sessions. RESULTS: There were significant improvements on 1RM DL/BW (p< 0.01), 1RM BSQ/BW (p< 0.01), and 10 m sprint (p< 0.01) in the two groups. The effect sizes (d) of the DL and BSQ groups were 2.01 and 1.04 for 1RM DL/BW, 1.08 and 2.08 for 1RM BSQ/BW, 0.35 and 0.11 for CMJ height, and -0.94 and -0.54 for 10 m sprint, respectively. CONCLUSIONS: DL training might improve jumping and acceleration compared to those of BSQ training.

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提举和后蹲对跳跃、加速和改变方向的影响比较

背景：提举（DL）相对于后蹲（BSQ）的优势在于后者需要额外的设备（即蹲架）。因此，如果DL能对跳跃、加速和方向改变产生积极影响，那么DL可以作为一种比BSQ更实用的训练练习。目的：本研究旨在比较DL和BSQ对跳跃、加速度和方向改变的影响。方法：23名男性（DL组12名[年龄：20.3±1.4岁，身高：169.6±6.7厘米，体重：65.7±11.2公斤]，BSQ组11名[年龄:20.2±1.9岁，身高171.5±4.8厘米，体重70.1±6.8公斤]）参加本研究。参与者进行了DL和BSQ的五次最大重复（RM），并测量了髋关节伸展的等速力量、臀大肌和腘绳肌的肌肉厚度、反跳（CMJ）高度、10米冲刺时间和T测试结果。使用5RM估计1RM，并将其标准化为体重（BW）。两组都进行了8次有监督的DL和BSQ训练。结果：两组的1RM DL/BW（p<0.01）、1RM BSQ/BW（p<0.01）和10m短跑（p<0.01）均有显著改善。DL和BSQ组的效应大小（d）对于1RM DL/BW分别为2.01和1.04，对于1RM BSQ/BW分别为1.08和2.08，对于CMJ身高分别为0.35和0.11，对于10m短跑分别为-0.94和-0.54。结论：与BSQ训练相比，DL训练可以提高跳跃和加速度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Isokinetics and Exercise Science 医学-工程：生物医学

CiteScore

1.20

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： Isokinetics and Exercise Science (IES) is an international journal devoted to the study of theoretical and applied aspects of human muscle performance. Since isokinetic dynamometry constitutes the major tool in this area, the journal takes a particular interest in exploring the considerable potential of this technology. IES publishes studies associated with the methodology of muscle performance especially with respect to the issues of reproducibility and validity of testing, description of normal and pathological mechanical parameters which are derivable from muscle testing, applications in basic research topics such as motor learning paradigms and electromyography. The journal also publishes studies on applications in clinical settings and technical aspects of the various measurement systems employed in human muscle performance research. The journal welcomes submissions in the form of research papers, reviews, case studies and technical reports from professionals in the fields of sports medicine, orthopaedic and neurological rehabilitation and exercise physiology.