Int J Sports Physiol Perform. 2013 May 20. [Epub ahead of print]
The Energetics of Semi-Contact 3 x 2 min Amateur Boxing.
Source
Centre for Sport and Exercise Science, Biological Sciences, University of Essex, Colchester, UK.
Abstract
The energy expenditure of amateur boxing is unknown.
PURPOSE:
Total metabolic cost (Wtot) as an aggregate of aerobic (Waer), anaerobic lactic (W[lactate]) and anaerobic alactic (WPCr) energy of a 3x2 min semi-contact amateur boxing bout were analysed.
METHODS:
Ten boxers (mean±SD (lower/upper 95% confidence intervals) age: 23.7±4.1 (20.8/26.6)yrs; height: 180.2±7.0 (175.2/185.2)cm; body mass: 70.6±5.7 (66.5/74.7)kg) performed a semi-contact bout against hand held pads created from previously analysed video footage of competitive bouts. Net metabolic energy was calculated using respiratory gases and blood [lactate].
RESULTS:
Waer 526.0±57.1 (485.1/566.9)kJ was higher (p<0.001) than WPCr 58.1±13.6 (48.4/67.8)kJ. W[lactate] 26.2±7.1 (21.1/31.3)kJ was lower (p<0.001) than Waer and WPCr. A ~70kJ fraction of the aerobic energy expenditure reflects re-phosphorilation of high energy phosphates during the breaks between rounds which elevated Wtot to ~680kJ with relative contributions of 77% Waer, 19% WPCr and 4% W[lactate].
CONCLUSIONS:
The results indicate that the metabolic profile of amateur boxing is predominantly aerobic. It also highlights the importance of a highly developed aerobic capacity as prerequisite of a high activity rate during rounds and recovery of the high energy phosphate system during breaks as interrelated requirements of successful boxing.
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