Can Energy Cost During Low-Intensity Resistance Exercise be Predicted by the OMNI-RES Scale?
The aim of the present study was to assess the precision of the OMNI-RES scale to predict energy cost (EC) at low intensity in four resistance exercises (RE). 17 male recreational body builders (age = 26.6 ± 4.9 years; height = 177.7 ± 0.1 cm; body weight = 79.0 ± 11.1 kg and percent body fat = 10.5 ± 4.6%) served as subjects. Initially tests to determine 1RM for four resistance exercises (bench press, half squat, lat pull down and triceps extension) were administered. Subjects also performed resistance exercise at 12, 16, 20, and 24% of 1RM at a rate of 40 bpm until volitional exhaustion. Oxygen uptake (VO2) and rate of perceived exertion (RPE) using the OMNI-RES were obtained during and after all RE. EC was calculated using VO2 and the caloric values of VO2 for non-protein RER. Regression analyses were performed for every RE, using EC as the dependent and RPE as the predictor variable. The triceps extension, lat pull down and bench press, RPE correlated strongly with EC (R > 0.97) and predicted EC with a error of less than 0.2 kcal.min-1. In conclusion, RPE using the OMNI-RES scale can be considered as an accurate indicator of EC in the bench press, lat pull down and triceps extension performed by recreational bodybuilders, provided lower intensities are used (up to 24% of 1-RM) and provided each set of exercise is performed for the maximal sustainable duration. It would be interesting in future studies to consider having the subjects exercise at low intensities for longer durations than those in the present study.
- Laboratory of motor evaluation, Federal University of Juiz de Fora, Brazil
- University Salgado de Oliveira, City Juiz de Fora, Brazil
- Federal University of Paraná, Curitiba, Brazil
- University of Pittsburgh, Pittsburgh, USA
- Baechle TR, Earle RW. National Strength Conditioning Association (U.S.). Essentials of strength training and conditioning, 2000 2nd ed. Champaign, Ill.: Human Kinetics.
- Borg GA. Psychophysical bases of perceived exertion. Med Sci Sports Exerc, 1982; 14(5): 377-81.[PubMed]
- Gearhart RF, Goss FL, Lagally KM, Jakicic JM, Gallagher J, Gallagher KI, et al. Ratings of perceived exertion in active muscle during high-intensity and low-intensity resistance exercise. J Strength Cond Res, 2002; 16(1): 87-91.[PubMed]
- Haltom RW, Kraemer RR, Sloan RA, Hebert EP, Frank K, Tryniecki JL. Circuit weight training and its effects on excess postexercise oxygen uptake. Med Sci Sports Exerc, 1999; 31(11): 1613-8.[Crossref]
- Hetzler RK, Seip RL, Boutcher SH, Pierce E, Snead D, Weltman A. Effect of exercise modality on ratings of perceived exertion at various lactate concentrations. Medicine Med Sci Sports Exerc, 1991; 23(1): 88-92.
- Hollander DB, Durand RJ, Trynicki JL, Larock D, Castracane VD, Hebert EP, et al. RPE, Pain, and Physiological Adjustment to Concentric and Eccentric Contractions. Med Sci Sports Exerc, 2003; 35: 1017-25.[PubMed][Crossref]
- Jackson AS, Pollock ML. Generalized equations for predicting body density of men. Br J Nutr, 1978; 40: 497-504.[PubMed][Crossref]
- Knutzen KM, Brilla LR, Caine D. Validity of 1RM Prediction Equations for Older Adults. J Strength Cond Res, 1999; 13(3): 242-6.
- Lagally KM, McCaw ST, Young GT, Medema HC, Thomas DQ. Ratings of perceived exertion and muscle activity during the bench press exercise in recreational and novice lifters. J Strength Cond Res, 2004; 18(2): 359-64.[PubMed]
- Lagally KM, Robertson RJ, Gallagher KI, Gearhart R, Goss FL. Ratings of perceived exertion during lowand high-intensity resistance exercise by young adults. Perceptual Motor Skills, 2002b; 94(3 Pt 1): 723-31.
- Lagally KM, Robertson RJ, Gallagher KI, Goss FL, Jakicic JM, Lephart SM, et al. Perceived exertion, electromyography, and blood lactate during acute bouts of resistance exercise. Med Sci Sports Exerc, 2002a; 34(3): 552-9; discussion 60.[Crossref]
- Lagally KM, Robertson RJ. Construct validity of the OMNI resistance exercise scale. J Strength Cond Res, 2006; 20(2): 252-6.[WoS][PubMed]
- Lambrick DM, Faulkner JA, Rowlands AV, Eston RG. Prediction of maximal oxygen uptake from submaximal ratings of perceived exertion and heart rate during a continuous exercise test: the efficacy of RPE 13. Eur J Appl Physiol, 2009; 107(1): 1-9.[WoS][Crossref][PubMed]
- LeSuer DA, McCormick JH, Mayhew JL, Wasserstein RL, Arnold MD. The Accuracy of Prediction Equations for Estimating 1-RM Performance in the Bench Press, Squat, and Deadlift. J Strength Cond Res, 1997; 11(4): 211-3.
- Morales J, Sobonya S. Use of Submaximal Repetition Tests for Predicting 1-RM Strength in Class Athletes. J Strength Cond Res, 1996; 10(3): 186-9.
- Pincivero DM, Coelho AJ, Campy RM. Gender Differences in Perceived Exertion during Fatiguing Knee Extensions. Med Sci Sports Exerc, 2004; 36: 109-17.[Crossref][PubMed]
- Robertson RJ, Goss FL, Rutkowski J, Lenz B, Dixon C, Timmer J, et al. Concurrent validation of the OMNI perceived exertion scale for resistance exercise. Med Sci Sports Exerc, 2003; 35(2): 333-41.[Crossref][PubMed]
- Robertson, RJ. Exercise testing and prescription using RPE as a criterion variable psychology. Int J Sports Psychology, 2001; 32(2): 177-188.
- Scott CB. Contribution of Blood Lactate To the Energy Expenditure of Weight Training. J Strength Cond Res, 2006; 20(2): 404-11.[PubMed]
- Shimano T, Kraemer WJ, Spiering BA, Volek JS, Hatfield DL, Silvester R, et al. Relationship Between the Number of Repetitions and Selected Percentages of One Repetition Maximum in Free Weight Exercises in Trained and Untrained Men. J Strength Cond Res, 2006; 20(4): 819-23.[PubMed]
- Short KR, Sedlock DA. Excess postexercise oxygen uptake and recovery rate in trained and untrained subjects. J Appl Physiol, 1997; 83(1): 153-9.[PubMed]
- Siri WE. Body composition from fluid spaces and density. In: Brozek J, Henschel A, editors. Techniques for measuring body composition. Washington DC: National Academy of Science, 1961; 223-44.
- Smolander J, Aminoff T, Korhonen I, Tervo M, Shen N, Korhonen O, et al. Heart rate and blood pressure responses to isometric exercise in young and older men. Eur J Appl Physiol; 1998; 77(5): 439-44.[Crossref]
- Suminski RR, Robertson RJ, Arslanian S, Kang J, Utter AC, DaSilva SG, et al. Perception of Effort During Resistance Exercise. J Strength Cond Res, 1997; 11(4): 261-5.
- Sweet TW, Foster C, Mcguigan MR, Brice G. Quantitation of resistance training using the session rating of perceived exertion method. J Strength Cond Res, 2004; 18(4): 796-802.[WoS][PubMed]
- Wernbom M, Augustsson J, Thomeé R. Effects of Vascular Occlusion on Muscular Endurance in Dynamic Knee Extension Exercise At Different Submaximal Loads. J Strength Cond Res, 2006; 20(2): 372-7.[PubMed]
- Woods S, Bridge T, Nelson D, Risse K, Pincivero DM. The effects of rest interval length on ratings of perceived exertion during dynamic knee extension exercise. J Strength Cond Res, 2004; 18: 540-545.[PubMed]