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Human Movement

The Journal of University School of Physical Education, Wroclaw; University School of Physical Education, Krakow

4 Issues per year


CiteScore 2016: 0.41

SCImago Journal Rank (SJR) 2015: 0.250
Source Normalized Impact per Paper (SNIP) 2015: 0.469

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1899-1955
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Volume 17, Issue 1 (Mar 2016)

Joint-Angle Specific Strength Adaptations Influence Improvements in Power in Highly Trained Athletes

Matthew R. Rhea
  • Corresponding author
  • A.T. Still University, Mesa, Arizona, USA, Kinesiology Department, 5850 East Still Circle, Mesa AZ 85206, USA
  • Email:
/ Joseph G. Kenn
  • Carolina Panthers, National Football League, Charlotte, North Carolina, USA
/ Mark D. Peterson
  • University of Michigan, Ann Arbor, Michigan, USA
/ Drew Massey
  • Game Time Sports and Training, Columbia, Tennessee, USA
/ Roberto Simão
  • Rio de Janeiro Federal University, Rio de Janeiro, Brazil
/ Pedro J. Marin
  • CYMO Research Institute, Valladolid, Spain
/ Mike Favero
  • Logan High School, Logan, Utah, USA
/ Diogo Cardozo
  • Rio de Janeiro Federal University, Rio de Janeiro, Brazil
  • Granbery Methodist College, Juiz de Fora, Brazil
/ Darren Krein
  • Indianapolis Colts, National Football League, Indianapolis, Indiana, USA
Published Online: 2016-06-28 | DOI: https://doi.org/10.1515/humo-2016-0006

Abstract

Purpose. The purpose of this study was to examine the influence of training at different ranges of motion during the squat exercise on joint-angle specific strength adaptations. Methods. Twenty eight men were randomly assigned to one of three training groups, differing only in the depth of squats (quarter squat, half squat, and full squat) performed in 16-week training intervention. Strength measures were conducted in the back squat pre-, mid-, and post-training at all three depths. Vertical jump and 40-yard sprint time were also measured. Results. Individuals in the quarter and full squat training groups improved significantly more at the specific depth at which they trained when compared to the other two groups (p < 0.05). Jump height and sprint speed improved in all groups (p < 0.05); however, the quarter squat had the greatest transfer to both outcomes. Conclusions. Consistently including quarter squats in workouts aimed at maximizing speed and jumping power can result in greater improvements.

Keywords: vertical jump; speed; squat depth; performance enhancement; sports conditioning

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About the article

Received: 2015-09-22

Accepted: 2016-03-21

Published Online: 2016-06-28

Published in Print: 2016-03-01



Citation Information: Human Movement, ISSN (Online) 1899-1955, DOI: https://doi.org/10.1515/humo-2016-0006. Export Citation

© Human Movement. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. (CC BY-NC-ND 4.0)

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