Abstract
Our objective was to determine the effects of long-lasting endurance events on the energy cost of running (C r), and the role of maximal oxygen uptake (VO2max), its fractional utilisation (F) and C r in determining the performance. Ten healthy runners (age range 26–59 years) participated in an ultra-endurance competition consisting of three running laps of 22, 48 and 20 km on three consecutive days in the North–East of Italy. Anthropometric characteristics and VO2max by a graded exercise test on a treadmill were determined 5 days before and 5 days after the competition. In addition, C r was determined on a treadmill before and after each running lap. Heart rate (HR) was recorded throughout the three laps. Results revealed that mean C r of the individual laps did not increase significantly with lap number (P = 0.200), thus ruling out any chronic lap effect. Even so, however, at the end of lap 3, C r was 18.0% (P < 0.001) greater than before lap 1. In addition, a statistically significant acute lap effect on C r was observed at the end of the second and third laps (by 11.4 and 7.2%, respectively). The main factors determining performance were VO2max, F, as estimated from the average HR, and the average C r-mean throughout the three laps; the grand average speed over the three laps being described by v end-mean = F × VO2max × C −1r-mean . We concluded that (1) the substantial increase of C r-mean during the competition yields to marked worsening of the performance, and (2) the three variables F, VO2max and C r-mean combined as described above explaining 87% of the total competition time variance.
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References
Beaver WL, Wasserman K, Whipp BJ (1986) A new method for detecting anaerobic threshold by gas exchange. J Appl Physiol 60:2020–2027
Beneke R, Hutler M (2005) The effect of training on running economy, performance in recreational athletes. Med Sci Sports Exerc 37(10):1794–1799
Billat V, Demarle A, Paiva M, Koralsztein JP (2002) Effect of training on the physiological factors of performance in elite marathon runners (males and females). Int J Sports Med 23(5):336–341
Brueckner JC, Atchou G, Capelli C, Duvallet A, Barrault D, Jousselin E, Rieu M, di Prampero PE (1991) The energy cost of running increases with the distance covered. Eur J Appl Physiol Occup Physiol 62(6):385–389
Conley DL, Krahenbuhl GS (1980) Running economy and distance running performance of highly trained athletes. Med Sci Sports Exerc 12(5):357–360
Craig CL, Marshall AL, Sjostrom M, Bauman AE, Booth ML, Ainsworth BE, Pratt M, Ekelund U, Yngve A, Sallis JF, Oja P (2003) International physical activity questionnaire: 12-country reliability and validity. Med Sci Sports Exerc 35(8):1381–1395
Daniels JT (1985) A physiologist’s view of running economy. Med Sci Sports Exerc 17(3):332–338
Davies CT, Thompson MW (1986) Physiological responses to prolonged exercise in ultramarathon athlete. J Appl Physiol 61(2):611–617
di Prampero PE (2003) Factors limiting maximal performance in humans. Eur J Appl Physiol 90(3-4):420–429
di Prampero PE, Atchou G, Brueckner JC, Moia C (1986) The energetics of endurance running. Eur J Appl Physiol Occup Physiol 55(3):259–266
di Prampero PE, Capelli C, Pagliaro P, Antonutto G, Girardis M, Zamparo P, Soule RG (1993) Energetics of best performances in middle-distance running. J Appl Physiol 74(5):2318–2324
Holloszy JO, Coyle EF (1984) Adaptations of skeletal muscle to endurance exercise and their metabolic consequences. J Appl Physiol 56(4):831–838
Jones AM (1998) A five year physiological case study of an Olympic runner. Br J Sports Med 32(1):39–43
Jones AM, Doust JH (1996) A 1% treadmill grade most accurately reflects the energetic cost of outdoor running. J Sports Sci 14(4):321–327
Joyner MJ (1991) Modeling: optimal marathon performance on the basis of physiological factors. J Appl Physiol 70(2):683–687
Laursen PB, Rhodes EC (2001) Factors affecting performance in an ultra endurance triathlon. Sports Med 31(3):195–209
Lukaski HC, Bolonchuk WW, Hall CB, Siders WA (1986) Validation of tetrapolar bioelectrical impedance method to assess human body composition. J Appl Physiol 60(4):1327–1332
Maughan RJ, Leiper JB (1983) Aerobic capacity and fractional utilisation of aerobic capacity in elite and non-elite male and female marathon runners. Eur J Appl Physiol Occup Physiol 52(1):80–87
Millet GY, Morin JB, Degache F, Edouard P, Feasson L, Verney J, Oullion R (2009) Running from Paris to Beijing: biomechanical and physiological consequences. Eur J Appl Physiol 107(6):731–738
Sjodin B, Svedenhag J (1985) Applied physiology of marathon running. Sports Med 2(2):83–99
Acknowledgments
We are grateful to the athletes for their kind collaboration, to Mr A. Iossa, Mr P. Tedeschi, and the A.S.D. Triathlon Team – Pordenone, Italy, for their qualified assistance during the study. We are grateful to Dr. M. Isola for his advises for statistical analyses. The financial support of the Lions Club, Udine-Duomo, Italy, is gratefully acknowledged.
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The authors declare that they have no conflict of interest.
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Communicated by Jean-René Lacour.
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Lazzer, S., Salvadego, D., Rejc, E. et al. The energetics of ultra-endurance running. Eur J Appl Physiol 112, 1709–1715 (2012). https://doi.org/10.1007/s00421-011-2120-z
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DOI: https://doi.org/10.1007/s00421-011-2120-z