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Journal of Human Kinetics

The Journal of Academy of Physical Education in Katowice

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Can Energy Cost During Low-Intensity Resistance Exercise be Predicted by the OMNI-RES Scale?

Jefferson Vianna / Victor Reis
  • Department of Sport Sciences, Exercise and Health, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
  • Research Centre for Sports Sciences, Health & Human Development (CIDESD), Vila Real, Portugal
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Francisco Saavedra
  • Department of Sport Sciences, Exercise and Health, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
  • Research Centre for Sports Sciences, Health & Human Development (CIDESD), Vila Real, Portugal
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Vinicius Damasceno / Sérgio Silva / Fredric Goss
Published Online: 2011-10-04 | DOI: https://doi.org/10.2478/v10078-011-0062-5

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.

Keywords: resistance exercise; oxygen uptake; rate of perceived exertion

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About the article


Published Online: 2011-10-04

Published in Print: 2011-09-01


Citation Information: Journal of Human Kinetics, ISSN (Online) 1899-7562, ISSN (Print) 1640-5544, DOI: https://doi.org/10.2478/v10078-011-0062-5.

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