TY  - JOUR
PY  - 2016//
TI  - Energy expenditure derived from micro-technology is not suitable for assessing internal load in collision-based activities
JO  - International journal of sports physiology and performance
A1  - Highton, Jamie
A1  - Mullen, Thomas
A1  - Norris, Jonathan
A1  - Oxendale, Chelsea
A1  - Twist, Craig
SP  - 264
EP  - 267
VL  - 12
IS  - 2
N2  - 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.<p />  <p>Language: en</p>
LA  - en
SN  - 1555-0265
UR  - http://dx.doi.org/10.1123/ijspp.2016-0069
ID  - ref1
ER  -