Author/Authors :
Verlengia Rozangela نويسنده College of Health Sciences, Methodist University of Piracicaba (UNIMEP), Piracicaba, Sao Paulo, Brazil , Schoenfeld Brad J. نويسنده Department of Health Sciences, CUNY Lehman College, Bronx, USA , Saldanha Aoki Marcelo نويسنده School of Arts, Sciences and Humanities, University of Sao Paulo, Sao Paulo, Brazil , Harley Crisp Alex نويسنده Post-graduate Program in Human Movement Sciences, University of Methodist of Piracicaba (UNIMEP), Piracicaba, Sao Paulo, Brazil , Lopes Charles Ricardo نويسنده Graduate Program in Science of Human Movement, College of Health Science (FACIS), Methodist University of Piracicaba, Piracicaba, Sao Paulo, Brazil , Ramos Mayara نويسنده School of Arts, Sciences and Humanities, University of Sao Paulo (USP), Sao Paulo, Brazil , Diego Germano Moises نويسنده Graduate Program in Science of Human Movement, College of Health Science (FACIS), Methodist University of Piracicaba, Piracicaba, Sao Paulo, Brazil , da Mota Gustavo Ribeiro نويسنده Department of Sports Sciences, Federal University of Triangulo Mineiro (UFTM), Uberaba, MG, Brazil , Henrique Marchetti Paulo نويسنده Department of Kinesiology, California State University, Northridge, CA, USA
Abstract :
[Objectives]This study aimed to investigate the effect of different rest interval durations between sets during full-body resistance exercise sessions on total load lifted and blood lactate concentrations in resistance-trained individuals.[Methods]Ten healthy young men (age: 23 ± 6.5 years; total body mass: 82.8 ± 10.6 kg, height: 177.3 ± 0.1 cm) randomly performed 3 resistance exercise sessions with different rest intervals between sets (30 seconds, 60 seconds and 120 seconds). The resistance exercise sessions consisted of 6 full-body exercises (bench press; seated low row; shoulder press; back squat; leg press 45° and seated calf raise) performed with 4 sets of 10 repetitions maximum (RM). Total load lifted (sets × repetitions × load (Kgf)) and lactate blood concentration were determined for each exercise session. One way, repeated measures analysis of variance (ANOVA) followed by Bonferroni’s post-hoc test were used for multiple comparisons.[Results]The total load lifted was significantly (P < 0.001) lower for 30 seconds (26382.0 ± 4100.3 kg) rest interval compared with 60 seconds (28864.5 ± 4139.7 kg) and 120 seconds (30064.4 ± 3966.4 kg). The blood lactate response was not different among the 3 rest interval conditions investigated, with mean peak values of 7.05 ± 1.69, 7.26 ± 2.77 and 6.90 ± 3.79 mM for 30 seconds, 60 seconds and 120 seconds, respectively.[Conclusions]In conclusion, rest interval durations of 60 seconds and 120 seconds between sets favored a higher total load lifted in the exercise session when compared to the 30 seconds rest interval. The rest protocols implemented in the present study promoted a similar metabolic response (e.g. blood lactate concentration) to a full-body resistance exercise session in trained subjects.
