RT Journal Article
T1 Effect of different inter-repetition rest intervals across four load intensities on velocity loss and blood lactate concentration during full squat exercise
A1 Mora Custodio, Ricardo
A1 Rodríguez Rosell, David
A1 Yáñez García, Juan Manuel
A1 Moreno-Sánchez, Ismael
A1 Pareja Blanco, Fernando
A1 González Badillo, Juan José
K1 CIRFD Centro de Investigación en Rendimiento Físico y Deportivo
K1 Resistance training
K1 Cluster configurations
K1 Fatigue
K1 Metabolic stress
AB 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.
PB Taylor & Francis
YR 2018
FD 2018
LK https://hdl.handle.net/10433/23227
UL https://hdl.handle.net/10433/23227
LA en
NO Mora-Custodio, R., Rodríguez-Rosell, D., Yáñez-García, J. M., Sánchez-Moreno, M., Pareja-Blanco, F., & González-Badillo, J. J. (2018). 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, 36(24), 2856–2864.
NO Departamento de Deporte e Informática
NO Centro de Investigación en Rendimiento Físico y Deportivo (CIRFD)
DS RIO
RD May 10, 2026