A comparison of spinal and lower extremity biomechanics during maximal and sub-maximal deadlifts among strength-trained women.

ABSTRACT:

Background

Previous studies have examined changes in biomechanical variables in response to different deadlift loads, yet, the effect of sub-maximal and maximal loads on potential deviation in lifting technique remain inadequately understood.

Methods

Therefore, this study compared barbell and joint kinematics, net joint moments (NJMs), and surface electromyography (sEMG) amplitude during 70%, 90%, and 100% of three-repetition maximum (3RM) load using statistical parametric mapping. Twelve strength-trained women (age: 23.18 ± 3.46 years, height: 166.72 ± 2.90 cm, body mass: 68.18 ± 7.67 kg) lifted 72.5 ± 9.3 kg, 93.9 ± 16.6 kg, and 102.9 ± 17.6 kg s at 70%, 90%, and 100% of 3RM deadlifts, respectively.

Results

The main findings revealed that the maximal load resulted i

SUBMITTER: Gundersen AH 

PROVIDER: S-EPMC12591051 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature