THE RELATIONSHIP OF THE REACTIVE STRENGTH INDEX-MODIFIED AND MEASURES OF FORCE DEVELOPMENT IN THE ISOMETRIC MID-THIGH PULL

  • George K. Beckham
  • Timothy J. Suchomel
  • Christopher A. Bailey
  • Christopher J. Sole
  • Jacob L. Grazer
Keywords: Explosiveness, Rate of Force Development, Maximum strength, performance testing

Abstract

Reactive strength index-modified (RSImod) may be an important variable to measure in the performance testing and monitoring of athletes, and very little work has examined this particular variable. One hundred six Division-I collegiate athletes performed countermovement jumps and the isometric mid-thigh pull. The relationship between the RSImod and variables from the isometric mid-thigh pull representative of explosive performance were evaluated with Pearson’s r. Relationships between RSImod and variables related to explosiveness ranged from moderate to large. Maximum and relative maximum strength had the strongest correlations to RSImod. RSImod appears to be a measure of explosiveness. Furthermore, an athlete’s isometric strength may be an indicator of their reactive strength.
Published
2014-10-05
Section
Coaching and Sports Activities