Metabolic Power in Team Sports - Part 2: Aerobic and Anaerobic Energy Yields

Abstract

A previous approach to estimate the time course of instantaneous metabolic power and O₂ consumption in team sports has been updated to assess also energy expenditure against air resistance and to identify walking and running separately. Whole match energy expenditure turned out ≈14% smaller than previously obtained, the fraction against the air resistance amounting to ≈2% of the total. Estimated net O₂ consumption and overall energy expenditure are fairly close to those measured by means of a portable metabolic cart; the average difference, after a 45 min exercise period of variable intensity and mode, amounting to ≈10%. Aerobic and anaerobic energy yields, metabolic power, energy expenditure and duration of High (HI) and Low (LI) intensity bouts can also be estimated. Indeed, data on 497 soccer players during the 2014/2015 Italian "Serie A" show that the number of HI efforts decreased from the first to the last 15-min periods of the match, without substantial changes in mean metabolic power (≈22 W·kg⁻¹) and duration (≈6.5 s). On the contrary, mean metabolic power of the LI decreased (5.8 to 4.8 W·kg⁻¹), mainly because of a longer duration thereof, thus underscoring the need for longer recovery periods between HI.

Key words

acceleration/deceleration - energy cost - oxygen consumption - walking/running - energy balance - high intensity/low intensity

• References

• 1 Brown DM, Dwyer DB, Robertson SJ, Gastin PB. Metabolic power method: Underestimation of energy expenditure in field-sport movements using a global positioning system tracking system. Int J Sports Physiol Perform 2016; 11: 1067-1073
• 2 Buchheit M, Manouvrier C, Cassirame J, Morin JB. Monitoring locomotor load in soccer: Is metabolic power, powerful?. Int J Sport Med 2015; 36: 1149-1155
• 3 Capelli C, Cautero M, Pogliaghi S. Algorithms, modelling and VO₂ kinetics. Eur J Appl Physiol 2011; 111: 331-342
• 4 Castagna C, Varley M, Povoas SCA, D’Ottavio S. Evaluation of the match external load in soccer: Methods comparison. Int J Sports Physiol Perform 2017; 12: 490-495
• 5 di Prampero PE, Botter A, Osgnach C. The energy cost of sprint running and the role of metabolic power in setting top performances. Eur J Appl Physiol 2015; 115: 451-469
• 6 di Prampero PE, Ferretti G. The energetics of anaerobic muscle metabolism: A reappraisal of older and recent concepts. Respir Physiol 1999; 118: 103-115
• 7 di Prampero PE, Osgnach C. Metabolic power in team sports – part 1: An update. Int J Sports Med 2018. doi: https:// doi.org/10.1055/a-0592-7660
• 8 Harriss DJ, Macsween A, Atkinson G. Standards for ethics in sport and exercise science research: 2018 Update. Int J Sports Med 2017; 38: 1126-1131
• 9 Margaria R, Edwards HT, Dill DB. The possible mechanism of contracting and paying the oxygen debt and the role of lactic acid in muscular contraction. Am J Physiol 1933; 106: 689-714
• 10 Oxendale CL, Highton J, Twist C. Energy expenditure, metabolic power and high speed activity during linear and multi-directional running. J Sci Med Sport 2017; 20: 957-961
• 11 Polglaze T. Metabolic power in team sports – controversies. 22nd Annual Congress of the European College of Sport Science 2017, Essen, Germany; Pre-conference workshop, July 5–8, 2017
• 12 Polglaze T, Hogan C, Dawson B, Osgnach C, Buttfield A, Lester L, Peeling P. Classification of intensity in team-sport activity. Med Sci Sports Exerc 2018;
• 13 Stevens TG, De Ruiter CJ, Van Maurik D, Van Lierop CJ, Savelsbergh GJ, Beek PJ. Measured and estimated energy cost of constant and shuttle running in soccer players. Med Sci Sports Exerc 2015; 47: 1219-1224