DEADLIFTS – RESEARCH
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MOMENT ARM STUDY
STRAIGHT BAR VS. HEX BAR
A Biomechanical Analysis of Straight and Hexagonal Barbell Deadlifts Using Submaximal Loads – Swinton – 2011
Procedure & Results
– 19 male powerlifters performed trials at maximum speed
– Loads: 10, 20, 30, 40, 50, 60, 70, 80% of their predetermined 1RM
– HBD: lower peak moments at the lumbar spine, hip, and ankle and increased peak moment at the knee
– 1RM: HBD 265 ± 41 kg vs. SBD 245 ± 39 kg
– Maximum peak power values: HBD 4,872 ± 636 W; SBD 4,388 ± 713
– Across submaximal loads, significantly greater peak force, peak velocity and peak power values were produced during the HBD compared to SBD