alexa Energy Demands and Metabolic Equivalents (METS) in U-19
ISSN: 2161-0673

Journal of Sports Medicine & Doping Studies
Open Access

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Research Article

Energy Demands and Metabolic Equivalents (METS) in U-19 Basketball Refereeing During Official Games

Mohamed Ali Nabli1,2*, Nidhal Ben Abdelkrim1, Carlo Castagna3, Imed Jabri4, Tahar Batikh4 and Karim Chamari5

1Tunisian Research Laboratory Sports Performance Optimization, National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia

2Department of Biology, Faculty of Sciences of Bizerte, University of Carthage, Bizerte, Tunisia

3School of Sport and Exercise Sciences, Faculty of Medicine and Surgery, University of Rome Tor Vergata, Rome, Italy

4Higher School of Sciences and Techniques of Tunis, University of Tunis, Tunis, Tunisia

5Athlete Health and Performance Research Centre, Qatar Orthopedic and Sports Medicine Hospital, Doha, Qatar

*Corresponding Author:
Mohamed Ali Nabli
Faculty of Sciences of Bizerte
University of Carthage, Tunisia
Tel: +974 6651377 / +216 55 947040
E-mail: [email protected]

Received Date: February 24, 2017; Accepted Date: March 30, 2017; Published Date: April 7, 2017

Citation: Nabli MA, Abdelkrim NB, Castagna C, Jabri I, Batikh T, et al. (2017) Energy Demands and Metabolic Equivalents (METS) in U-19 Basketball Refereeing During Official Games. J Sports Med Doping Stud 7: 190. doi:10.4172/2161-0673.1000190

Copyright: © 2017 Nabli MA, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited.



The metabolic demands among U-19 basketball players were studied; however, physical and physiological demands of U-19 basketball refereeing during competition are rather scant. The aim of this study was to analyze the energy expenditure (EE) and the exercise intensity of basketball refereeing during official game and determined as Metabolic Equivalent (METs). Sixteen elite level basketball referees were studied during U-19 basketball games (n=8) for time motion analyses (TMA). The EE data were calculated, using specific equations, from the time spent by the referee in each exercise-intensity zone. During game, referees spent a mean EE of 504.4 ± 77.7 kcal. A significant difference was observed between 113.5 ± 18.2 kcal in the 1st quarter (Q1) and 137 ± 27.5 kcal in the Q4 (p=0.007). The averaged EE (~5 corresponded to “moderate energy intensity” (~5 METs) with a large contribution of the aerobic energy pathway. In all, during 88% of game the intensity was equal or lower than 3.8 METs and in 12% it was higher than 9.8 METs which were considered as low to high-intensity thresholds, respectively. The energetic profile studied in this research confirms that basketball refereeing may be regarded as a clearly intermittent-activity mode with a predominantly aerobic metabolism solicitation. Referees officiating in U-19 basketball games should carry out a physical conditioning regime that prepares them for such an effort.


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