The effect of rest interval length on metabolic responses to the bench press exercise
- 1.2k Downloads
The purpose of this study was to examine the effects of different rest interval (RI) lengths on metabolic responses to the bench press. Eight resistance-trained men performed 10 randomized protocols [five sets of bench press with 75 or 85% of 1RM for ten (10REP) and five repetitions (5REP), respectively, using different RI (30 s, 1, 2, 3, 5 min)]. Oxygen consumption (VO2) was measured during exercise and for 30 min post exercise. For 30-s and 1-min RI: reductions (15–55%) in resistance and volume were observed (set 5 < 4 < 3 < 2 < 1). For 2-min RI: performance was maintained during the first two sets but was reduced by 8–29% during sets 3–5. For 3-min RI: a reduction was observed in volume where sets 4 and 5 were lower than sets 1–3 (∼21%). For 5-min RI: only a reduction in set 5 was observed. Mean VO2 and ventilation (V E) were progressively higher as RI length was shortened. VO2 area under the curve indicated 10REP > 5REP for all RI except 1-min. Respiratory exchange ratio (RER) was elevated similarly for each protocol. Post exercise, VO2, V E, and RER were elevated through 30 min. No differences between RI were observed following 10REP; however, VO2 after 30-s was higher than 2-, 3-, and 5-min and 1-min was higher than 5-min during 5REP. Fatigue rate was correlated (r = 0.30–0.49) to all metabolic variables. A continuum of performance reductions and metabolic responses were observed. The largest reductions in performance occurred with very short RI (<1 min), and performance was maintained during the first 3–4 sets when 3- and 5-min RI were used.
KeywordsBench press Strength training Oxygen consumption Respiratory exchange ratio EPOC
We would like to thank a dedicated group of subjects for their participation. In addition, we would like to thank the National Strength and Conditioning Association for funding this study.
- American College Of Sports Medicine (2002) Progression models in resistance training for healthy adults. Med Sci Sports Exerc 34:364–380Google Scholar
- Byrd R, Hopkins-Price P, Boatwright JD, Kinley KA (1988) Prediction of the caloric cost of the bench press. J Appl Sport Sci Res 2:7–8Google Scholar
- Elliot DL, Goldberg L, Kuehl KS (1992) Effect of resistance training on excess post-exercise oxygen consumption. J Appl Sport Sci Res 6:77–81Google Scholar
- Hultman E, Sjoholm H (1986) Biochemical causes of fatigue. In: Jones NL, McCartney MR, McComas AJ (eds) Human muscle power. Human Kinetics, Champaign, pp 215–238Google Scholar
- Hunter G, Blackman L, Dunnam L, Flemming G (1988) Bench press metabolic rate as a function of exercise intensity. J Appl Sport Sci Res 2:1–6Google Scholar
- Kalb JS, Hunter GR (1991) Weight training economy as a function of intensity of the squat and overhead press exercise. J Sports Med Phys Fit 31:154–160Google Scholar
- Kraemer WJ, Fry AC, Ratamess NA, French DN (2006) Strength testing: Development and evaluation of methodology. In: Maud P, Foster C (eds) Physiological assessment of human fitness, 2nd edn. Human Kinetics, Champaign, pp 119–150Google Scholar
- McArdle WD, Foglia GF (1969) Energy cost and cardiorespiratory stress of isometric and weight training exercises. J Sports Med 9:23–30Google Scholar
- Murphy E, Schwarzkopf R (1992) Effects of standard set and circuit weight training on excess post-exercise oxygen consumption. J Appl Sport Sci Res 6:88–91Google Scholar
- Scala D, Mcmillan J, Blessing D, Rozenek R, Stone M (1987) Metabolic cost of a preparatory phase of training in weight lifting: a practical observation. J Appl Sports Sci Res 1:48–52Google Scholar
- Willoughby DS, Chilek DR, Schiller DA, Coast JR (1991) The metabolic effects of three different free weight parallel squatting intensities. J Hum Move Studies 21:53–67Google Scholar