The Influence of Maximum Squatting Strength on Jump and Sprint Performance: A Cross-Sectional Analysis of 492 Youth Soccer Players

Michael Keiner, Torsten Brauner, Björn Kadlubowski, Andre Sander and Klaus Wirth
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Michael Keiner: Department of Exercise Sciences, German University of Health & Sport, 85737 Ismaning, Germany
Torsten Brauner: Department of Kinesiology & Biomechanics, German University of Health & Sport, 85737 Ismaning, Germany
Björn Kadlubowski: Department of Exercise Sciences, German University of Health & Sport, 85737 Ismaning, Germany
Andre Sander: German Luge and Bobsled Federation, 83471 Berchtesgaden, Germany
Klaus Wirth: Department of Sports Science, University of Applied Sciences Wiener Neustadt, 2700 Vienna, Austria

IJERPH, 2022, vol. 19, issue 10, 1-10

Abstract: This study aims to analyze the influence of relative strength performance, determined by parallel back squats (REL SQ), on 30 m sprinting (LS) and on jumping performance (squat [SJ], countermovement [CMJ]) in a large sample ( n = 492) of elite youth soccer players. The soccer players were divided into subgroups based on their strength performance: strength level 1 (0.0–0.5 REL SQ), strength level 2 (>0.5–1.0 REL SQ), strength level 3 (>1.0 to 1.5 REL SQ), strength level 4 (>1.5 to 2.0 REL SQ), and strength level 5 (>2.0 REL SQ). The results of this study show that REL SQ explains 45–53% (r = |0.67–0.73|) of the variance of SJ, CMJ, and LS for the total sample. Strength levels 2–4 showed similar coefficients of correlation in jumping performance (r = |0.42–0.55|) and strength levels 2 and 3 in sprint performance (r = |0.41|). The respective extreme strength levels showed lower coefficients of correlation with the sprinting and jumping performance variables (r = |0.11–0.29|). No coefficients could be calculated for strength level 5 because no athlete achieved an appropriate strength level (>2.0 REL SQ). The data from this study show a clear influence of REL SQ on sprint and jump performance, even in a large sample.

Keywords: 1RM; squat jump; counter movement jump; linear sprint (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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