Citation

Highton J, Mullen T, Norris J, Oxendale C, Twist C. Int. J. Sports Physiol. Perform. 2016; 12(2): 264-267.

Affiliation

Department of Sport and Exercise Sciences, University of Chester, Chester, UK.

Copyright

(Copyright © 2016, Human Kinetics Publishers)

DOI

10.1123/ijspp.2016-0069

PMID

27193085

Abstract

This aim of this study was to examine the validity of energy expenditure derived from micro-technology when measured during a repeated effort rugby protocol. Sixteen male rugby players completed a repeated effort protocol comprising 3 sets of 6 collisions during which movement activity and energy expenditure (EEGPS) were measured using micro-technology. In addition, energy expenditure was also estimated from open circuit spirometry (EEVO2). Whilst related (r = 0.63, 90%CI 0.08-0.89), there was a systematic underestimation of energy expenditure during the protocol (-5.94 ± 0.67 kcal·min-1) for EEGPS (7.2 ± 1.0 kcal·min-1) compared to EEVO2 (13.2 ± 2.3 kcal·min-1). High-speed running distance (r = 0.50, 95%CI -0.66-0.84) was related to EEVO2, while Player Load was not (r = 0.37, 95%CI -0.81-0.68). Whilst metabolic power might provide a different measure of external load than other typically used micro-technology metrics (e.g. high-speed running, Player Load), it underestimates energy expenditure during intermittent team sports that involve collisions.

Language: en