Evidence map›Paper›PMID 33670253›Full record

ArticleSports (Basel, Switzerland)2021

Footwear Affects Conventional and Sumo Deadlift Performance.

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

Abstract read
In one paragraph

Article in Sports (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Kevin A ValenzuelaMovement Science Lab, Department of Kinesiology, California State University, Long Beach, CA 90840, USA.ORCID 0000-0002-7930-9523
Kellie A WaltersMovement Science Lab, Department of Kinesiology, California State University, Long Beach, CA 90840, USA.ORCID 0000-0002-0892-8028
Elizabeth L AvilaMovement Science Lab, Department of Kinesiology, California State University, Long Beach, CA 90840, USA.
Alexis S CamachoMovement Science Lab, Department of Kinesiology, California State University, Long Beach, CA 90840, USA.
Fany AlvaradoMovement Science Lab, Department of Kinesiology, California State University, Long Beach, CA 90840, USA.
Hunter J BennettNeuromechanics Lab, Old Dominion University, Norfolk, VA 23529, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

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.

Indexed as

barefootresistance trainingshoesweight lifting

Identifiers

PMID33670253
PMCPMC7918349

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.