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

Michael Duncan, Lucas Guimarães-Ferreira, Jason Tallis, Irineu Loturco, Anthony Weldon, Rohit Thapa

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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.

Original languageEnglish
Pages (from-to)229–238
Number of pages10
JournalBiomedical Human Kinetics
Volume15
Issue number1
DOIs
Publication statusPublished - 21 Sept 2023

Bibliographical note

© 2023 Michael J. Duncan et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords

  • muscle strength
  • muscle power
  • resistance training
  • physical exertion
  • athletic performance

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