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Valenzuela KA, Walters KA, Avila EL, et al. Footwear Affects Conventional and Sumo Deadlift Performance. Sports (Basel). 2021;9(2)doi: 10.3390/sports9020027.
Valenzuela, K. A., Walters, K. A., Avila, E. L., Camacho, A. S., Alvarado, F., & Bennett, H. J. (2021). Footwear Affects Conventional and Sumo Deadlift Performance. Sports (Basel, Switzerland), 9(2), . https://doi.org/10.3390/sports9020027
Valenzuela, Kevin A, et al. "Footwear Affects Conventional and Sumo Deadlift Performance." Sports (Basel, Switzerland) vol. 9,2 (2021). doi: https://doi.org/10.3390/sports9020027
Valenzuela KA, Walters KA, Avila EL, Camacho AS, Alvarado F, Bennett HJ. Footwear Affects Conventional and Sumo Deadlift Performance. Sports (Basel). 2021 Feb 11;9(2). doi: 10.3390/sports9020027. PMID: 33670253; PMCID: PMC7918349.
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Sports (Basel). 2021 Feb 11;9(2). doi: 10.3390/sports9020027.

Footwear Affects Conventional and Sumo Deadlift Performance.

Sports (Basel, Switzerland)

Kevin A Valenzuela, Kellie A Walters, Elizabeth L Avila, Alexis S Camacho, Fany Alvarado, Hunter J Bennett

Affiliations

  1. Movement Science Lab, Department of Kinesiology, California State University, Long Beach, CA 90840, USA.
  2. Neuromechanics Lab, Old Dominion University, Norfolk, VA 23529, USA.

PMID: 33670253 PMCID: PMC7918349 DOI: 10.3390/sports9020027

Abstract

Barefoot weightlifting has become a popular training modality in recent years due to anecdotal suggestions of improved performance. However, research to support these anecdotal claims is limited. Therefore, the purpose of this study was to assess the differences between the conventional deadlift (CD) and the sumo deadlift (SD) in barefoot and shod conditions. On day one, one-repetition maximums (1 RM) were assessed for thirty subjects in both the CD and SD styles. At least 72 h later, subjects returned to perform five repetitions in four different conditions (barefoot and shod for both CD and SD) at 70% 1 RM. A 2 × 2 (footwear × lifting style) MANOVA was used to assess differences between peak vertical ground reaction force (VGRF), total mechanical work (WORK), barbell vertical displacement (DISP), peak vertical velocity (PV) and lift time (TIME) during the concentric phase. The CD displayed significant increases in VGRF, DISP, WORK, and TIME over the SD. The shod condition displayed increased WORK, DISP, and TIME compared to the barefoot condition. This study suggests that lifting barefoot does not improve performance as no differences in VGRF or PV were evident. The presence of a shoe does appear to increase the DISP and WORK required to complete the lift, suggesting an increased work load is present while wearing shoes.

Keywords: barefoot; resistance training; shoes; weight lifting

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