Determining and comparing the optimum power loads in hexagonal and straight bar deadlifts in novice strength-trained males

IF 0.8 Q4 HEALTH CARE SCIENCES & SERVICES
Michael J. Duncan, Lucas Guimaraes-Ferreira, Jason Tallis, Irineu Loturco, Anthony Weldon, Rohit K. Thapa
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Abstract

Abstract Study aim : This study aimed to determine and compare the ‘optimum power load’ in the hexagonal (HBDL) and straight (SBDL) bar deadlift exercises. Material and methods : Fifteen novice strength-trained males performed three repetitions of the HBDL and SBDL at loads from 20–90% of their one-repetition maximum (1RM). Peak power, average power, peak velocity, and average velocity were determined from each repetition using a velocity-based linear position transducer. Results : Repeated measures ANOVA revealed a significant effect of load for HBDL and SBDL (all p < 0.001). Post-hoc analyses revealed peak power outputs for HBDL were similar across 50–90% 1RM, with the highest peak power recorded at 80% 1RM (1053 W). The peak power outputs for SBDL were similar across 40–90% 1RM, with the highest peak power recorded at 90% 1RM (843 W). A paired sample t-test revealed that HBDL showed greater peak power at 60% (Hedges’ g effect size g = 0.53), average power at 50–70%, (g = 0.56–0.74), and average velocity at 50% of 1RM (g = 0.53). However, SBDL showed greater peak velocity at 20% (g = 0.52) and average velocity at 90% of 1RM (g = 0.44). Conclusion : Practitioners can use these determined loads to target peak power and peak velocity outputs for the HBDL and SBDL exercises (e.g., 50–90% 1RM in HBDL). The HBDL may offer additional advantages resulting in greater peak power and average power outputs than the SBDL.
确定和比较初学力量训练的男性六角形和直杆硬举的最佳力量负荷
摘要研究目的:本研究旨在确定和比较六角形(HBDL)和直杆(SBDL)硬举练习的“最佳力量负荷”。材料和方法:15名受过力量训练的男性新手在其单次重复最大值(1RM)的20-90%的负荷下进行三次HBDL和SBDL重复。峰值功率、平均功率、峰值速度和平均速度使用基于速度的线性位置传感器从每次重复中确定。结果:重复测量方差分析显示负荷对HBDL和SBDL有显著影响(p <0.001)。HBDL的因果分析显示峰值功率输出是相同的在50 - 90% 1 rm,峰值功率最高记录为80% 1 rm (1053 W),峰值功率输出SBDL相似在40 - 90% 1 rm,峰值功率最高记录为90% 1 rm (843 W)。配对样本t检验显示,HBDL显示更大的峰值功率在60%(树篱的g效果g = 0.53),平均功率为50 - 70%,(g = 0.56 - -0.74),和平均速度的50% 1 rm (g = 0.53)。然而,SBDL在1RM的20% (g = 0.52)和90% (g = 0.44)时显示出更大的峰值速度。结论:从业者可以使用这些确定的负荷来确定HBDL和SBDL练习的峰值功率和峰值速度输出(例如,HBDL中的50-90% 1RM)。与SBDL相比,HBDL可以提供更大的峰值功率和平均功率输出。
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来源期刊
Biomedical Human Kinetics
Biomedical Human Kinetics HEALTH CARE SCIENCES & SERVICES-
CiteScore
1.50
自引率
12.50%
发文量
0
审稿时长
15 weeks
期刊介绍: The leading idea is the health-directed quality of life. The journal thus covers many biomedical areas related to physical activity, e.g. physiology, biochemistry, biomechanics, anthropology, medical issues associated with physical activities, physical and motor development, psychological and sociological issues associated with physical activities, rehabilitation, health-related sport issues and fitness, etc.
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