Construct and concurrent validation of a new resistance intensity scale for exercise with thera-band® elastic bands

Juan C Colado; Xavier Garcia-Masso; N Travis Triplett; Joaquin Calatayud; Jorge Flandez; David Behm; Michael E Rogers

Construct and concurrent validation of a new resistance intensity scale for exercise with thera-band® elastic bands

J Sports Sci Med. 2014 Dec 1;13(4):758-66. eCollection 2014 Dec.

Authors

Juan C Colado¹, Xavier Garcia-Masso¹, N Travis Triplett², Joaquin Calatayud¹, Jorge Flandez³, David Behm⁴, Michael E Rogers⁵

Affiliations

¹ Research Group in Sport and Health, University of Valencia , Valencia, Spain.
² Neuromuscular Laboratory, Department of Health, Leisure and Exercise Science, Appalachian State University , Boone, NC, USA.
³ Austral University of Chile, Faculty of Pedagogy in Physical Education, Sports and Recreation , Valdivia, Chile.
⁴ Memorial University of Newfoundland St. John´s , Newfoundland, Canada ; Invited researcher, University of Valencia , Valencia, Spain.
⁵ Department of Human Performance Studies, Center for Physical Activity and Aging, Wichita State University , Wichita, Kansas, USA.

PMID: 25435767
PMCID: PMC4234944

Abstract

The construct and concurrent validity of the Thera-Band Perceived Exertion Scale for Resistance Exercise with elastic bands (EB) was examined. Twenty subjects performed two separate sets of 15 repetitions of both frontal and lateral raise exercise over two sessions. The criterion variables were myoelectric activity and heart rate. One set was performed with an elastic band grip width that permitted 15 maximum repetitions in the selected exercise, and another set was performed with a grip width 50% more than the 15RM grip. Following the final repetition of each set, active muscle (AM) and overall body (O) ratings of perceived exertion (RPE) were collected from the Thera-Band® resistance exercise scale and the OMNI-Resistance Exercise Scale of perceived exertion with Thera-Band® resistance bands (OMNI-RES EB). Construct validity was established by correlating the RPE from the OMNI-RES EB with the Thera-Band RPE scale using regression analysis. The results showed significant differences (p ≤ 0.05) in myoelectric activity, heart rate, and RPE scores between the low- and high-intensity sets. The intraclass correlation coefficient for active muscles and overall RPE scale scores was 0.67 and 0.58, respectively. There was a positive linear relationship between the RPE from the OMNI-RES EB and the Thera-Band scale. Validity coefficients for the RPE AM were r(2) = 0.87 and ranged from r(2) = 0.76 to 0.85 for the RPE O. Therefore, the Thera-Band Perceived Exertion Scale for Resistance Exercise can be used for monitoring elastic band exercise intensity. This would allow the training dosage to be better controlled within and between sessions. Moreover, the construct and concurrent validity indicates that the OMNI-RES EB measures similar properties of exertion as the Thera-Band RPE scale during elastic resistance exercise. Key pointsThis new resistance intensity scale is an appropriate and valid tool for assessing perceived exertion during strength training with elastic bands.This scale can be used without reducing the accuracy of the dosage prescribed during training/rehabilitation sessions and while carrying out medium and/or long-term periodization programs or therapeutic interventions.Populations with specific physical or physiological needs could have access to an easy-to-use resource that allows them to carry out their training/rehabilitation programs with greater efficacy and without any risk to health.

Keywords: RPE; heart rate; myoelectric activity; resistance exercise.