Effect of different inter-repetition rest intervals across four load intensities on velocity loss and blood lactate concentration during full squat exercise

Journal of Sports Sciences
Ricardo Mora-CustodioJ J González-Badillo

Abstract

This study aimed to analyze the acute effect of inter-repetition rest (IRR) intervals on mechanical and metabolic response during four resistance exercise protocols (REPs). Thirty resistance-trained men were randomly assigned to: continuous repetitions (CR), 10 s (IRR10) or 20 s (IRR20) inter-repetition rest. The REPs consisted of 3 sets of 6, 5, 4 and 3 repetitions against 60, 70, 75 and 80% 1RM, respectively, in the full squat exercise. Muscle fatigue was assessed using: percentage of velocity loss over three sets, percentage of velocity loss against the ~1 m·s-1 load (V1 m·s-1), and loss of countermovement jump (CMJ) height pre-post exercise. Blood lactate was measured before and after exercise. The percentage of velocity loss over three sets and lactate concentration were significantly lower (P < 0.05) for IRR groups compared to CR in all REPs. The CR group showed a significantly higher (P < 0.05) velocity loss against V1 m·s-1 load and loss of CMJ height pre-post exercise than IRR groups in REP against 60% 1RM. In conclusion, both IRR groups produced a significant lower degree of fatigue compared to CR group. However, no significant differences were found in any measured variables between IRR configurations.

References

Dec 28, 1976·Pflügers Archiv : European journal of physiology·R C HarrisK Sahlin
Jul 6, 2000·European Journal of Applied Physiology·D B PyneA Logan
Nov 8, 2005·Sports Medicine·Blair CrewtherJustin Keogh
Mar 1, 2006·Journal of Strength and Conditioning Research·Trent W LawtonRod P Lindsell
Aug 30, 2006·Journal of Strength and Conditioning Research·James Denton, John B Cronin
Aug 19, 2007·The Journal of Physiology·Roger M Enoka, Jacques Duchateau
Jun 12, 2008·Journal of Strength and Conditioning Research·Gleber PereiraEduardo Kokubun
Dec 19, 2008·Medicine and Science in Sports and Exercise·William G HopkinsJuri Hanin
Feb 25, 2010·International Journal of Sports Medicine·J J González-Badillo, L Sánchez-Medina
Mar 12, 2010·International Journal of Sports Medicine·L Sanchez-MedinaJ J Gonzalez-Badillo
Mar 20, 2010·Journal of Strength and Conditioning Research·James W Krieger
Jun 18, 2010·Journal of Strength and Conditioning Research·Rahman RahimiSaeed S Boroujerdi
Feb 12, 2011·Medicine and Science in Sports and Exercise·Luis Sánchez-Medina, Juan José González-Badillo
Sep 22, 2011·International Journal of Sports Physiology and Performance·Keir T HansenMichael J Newton
Dec 8, 2011·Physiotherapy Research International : the Journal for Researchers and Clinicians in Physical Therapy·Reidar AarskogJan Magnus Bjordal
Jan 10, 2012·Journal of Strength and Conditioning Research·Justin P HardeeJeffrey M Mcbride
Feb 10, 2012·International Journal of Sports Medicine·E Iglesias-SolerM L Chapman
Jul 19, 2012·PloS One·Esteban M GorostiagaMikel Izquierdo
Feb 11, 2014·Journal of Human Kinetics·Gavin L MoirChad A Witmer
Feb 19, 2014·European Journal of Sport Science·Julia C GirmanRichard J Wood
Jun 3, 2014·International Journal of Sports Medicine·F Pareja-BlancoJ J González-Badillo
Jun 20, 2014·Journal of Strength and Conditioning Research·Steven D MorenoDaniel A Judelson
Jul 18, 2015·European Journal of Applied Physiology·Jonathan M OliverMargaret T Jones
Aug 27, 2015·Journal of Strength and Conditioning Research·Amador García-RamosBelén Feriche
Jan 23, 2016·The Journal of Experimental Biology·Hans Hoppeler
Apr 3, 2016·Scandinavian Journal of Medicine & Science in Sports·F Pareja-BlancoJ J González-Badillo
Jul 29, 2016·Journal of Strength and Conditioning Research·James J TufanoG Gregory Haff
Feb 14, 2017·International Journal of Sports Medicine·Juan José González-BadilloDavid Rodríguez-Rosell
Jul 13, 2017·Journal of Strength and Conditioning Research·Jorge M González-HernándezPedro Jiménez-Reyes
Oct 28, 2017·Journal of Strength and Conditioning Research·Amador García-RamosPedro Jiménez-Reyes
Nov 16, 2017·International Journal of Sports Physiology and Performance·Harry G BanyardG Gregory Haff
Mar 28, 2017·Sports Medicine International Open·Luis Sánchez-MedinaJuan José González-Badillo

❮ Previous
Next ❯

Citations

Dec 12, 2020·Journal of Strength and Conditioning Research·Nathan ElsworthyJoshua H Guy
Dec 6, 2020·Journal of Strength and Conditioning Research·Manuel Ortega-BecerraFernando Pareja-Blanco
Aug 8, 2021·International Journal of Environmental Research and Public Health·Manuel García-SilleroSalvador Vargas-Molina

❮ Previous
Next ❯

Software Mentioned

SPSS

Related Concepts

Related Feeds

Biomechanics

Biomechanics examines the generation of internal forces within the body and investigates the effects and control of forces that act on or are produced on tissues. Here are the latest discoveries.

Related Papers

Journal of Strength and Conditioning Research
David Rodríguez-RosellJ J González-Badillo
European Journal of Applied Physiology
Ricardo Morán-NavarroJesús G Pallarés
Medicine and Science in Sports and Exercise
L Sánchez-Medina, J J González-Badillo
Journal of Strength and Conditioning Research
Jorge M González-HernándezPedro Jiménez-Reyes
© 2022 Meta ULC. All rights reserved