No Improvement in Race Performance by Naps in Male Ultra-Endurance Cyclists in a 600-km Ultra-Cycling Race

10.4077/CJP.2012.BAA022

Beat Knechtle；Andrea Wirth；Patrizia Knechtle；Christoph Alexander Rüst；Thomas Rosemann；Romuald Lepers

training ； support ； anthropometry ； performance ； sleep

The Chinese Journal of Physiology

55卷2期（2012 / 04 / 01）

125 - 133

英文

Ultra-endurance performance is of increasing popularity. We investigated the associations between anthropometry, training and support during racing, with race performance in 67 male recreational ultra-endurance cyclists participating in the ”Swiss Cycling Marathon” over 600 kilometres, an official qualifier for the cycling ultra-marathon ”Paris-Brest-Paris”. The 54 finishers showed no differences in anthropometry and did not train differently compared to the 13 non-finishers. During the race, the finishers were significantly more frequently racing alone than being followed by a support crew. After bivariate analysis, percent body fat (r = 0.43), the cycling distance per training unit (r = -0.36), the duration per training unit (r = -0.31) and the sleep time during the race (r = 0.50) were related to overall race time. The 23 non-sleepers in the finisher group completed the race within (mean and IQR) 1,567 (1,453-1,606) min, highly significantly faster than the 31 sleepers with 1,934 (1,615-2,033) min (P = 0.0003). No variable of support during the race was associated with race time. After multivariate analysis, percent body fat (P = 0.026) and duration per training unit (P = 0.005) remained predictor variables for race time. To summarize, for a successful finish in a cycling ultra-marathon over 600 kilometres such as the ”Swiss Cycling Marathon”, percent body fat and duration per training unit were related to race time whereas equipment and support during the race showed no association. Athletes with naps were highly significantly slower than athletes without naps.

1. Herbst, L.,Knechtle, B.,Lopez, C. L.,Andonie, J. L.,Fraire, O. S.,Kohler, G.,Rüst, C. A.,Rosemann, T.(2011).Pacing strategy and change in body composition during a Deca Iron Triathlon.Chinese J. Physiol.,54(4),255-263.
   連結：
2. Ball, S. D.,Altena, T. S.,Swan, P. D.(2004).Comparison of anthropometry to DXA: a new prediction equation for men.Eur. J. Clin. Nutr.,58(11),1525-1531.
3. Becque, M. D.,Katch, V.,Moffatt, R. J.(1986).Time course of skin-plus-fat compression in males and females.Hum. Biol.,58(1),33-42.
4. Driver, H. S.,Rogers, G. G.,Mitchell, D.,Borrow, S. J.,Allen, M.,Luus, H. G.,Shapiro, C. M.(1994).Prolonged endurance exercise and sleep disruption.Med. Sci. Sports Exerc.,26(7),903-907.
5. Goh, V. H.,Tong, T. Y.,Lim, C. L.,Low, E. C.,Lee, L. K.(2001).Effects of one night of sleep deprivation on hormone profiles and performance efficiency.Mil. Med.,166(5),427-431.
6. Gregory, J.,Johns, D. P.,Wallis, J. T.(2007).Relative vs. absolute physiological measures as predictors of mountain bike cross-country race performance.J. Strength Cond. Res.,21(1),17-22.
7. Groslambert, A.,Candau, R.,Millet, G. P.(2008).Effect of sleep deprivation on anxiety and perceived fatigue during a one-man Atlantic Ocean crossing on a sport catamaran.Envir. Behav.,40(1),96-110.
8. Gulbin, J. P.,Gaffney, P. T.(1999).Ultraendurance triathlon participation: typical race preparation of lower level triathletes.J. Sports Med. Phys. Fitness,39(1),12-15.
9. Hoffman, M. D.(2008).Anthropometric characteristics of ultramarathoners.Int. J. Sports Med.,29(10),808-811.
10. Hopker, J.,Coleman, D.,Passfield, L.(2009).Changes in cycling efficiency during a competitive season.Med. Sci. Sports Exerc.,41(4),912-929.
11. Hulton, A. T.,Lahart, I.,Williams, K. L.,Godfrey, R.,Charlesworth, S.,Wilson, M.,Pedlar, C.,Whyte, G.(2010).Energy expenditure in the Race Across America (RAAM).Int. J. Sports Med.,31(7),463-467.
12. Impellizzeri, F. M.,Marcora, S. M.,Rampinini, E.,Mognoni, P.,Sassi, A.(2005).Correlations between physiological variables and performance in high level cross country off road cyclists.Brit. J. Sports Med.,39(10),747-751.
13. Impellizzeri, F. M.,Rampinini, E.,Sassi, A.,Mognoni, P.,Marcora, S.(2005).Physiological correlates to off-road cycling performance.J. Sports Sci.,23(1),41-47.
14. Knechtle, B.,Duff, B.,Schulze, I.,Rosemann, T.,Senn, O.(2009).Anthropometry and pre-race experience of finishers and nonfinishers in a multistage ultra-endurance run-Deutschlandlauf 2007.Percept. Mot. Skills,109(1),105-118.
15. Knechtle, B.,Duff, B.,Welzel, U.,Kohler, G.(2009).Body mass and circumference of upper arm are associated with race performance in ultraendurance runners in a multistage race-the Isarrun 2006.Res. Q. Exerc. Sport,80(2),262-268.
16. Knechtle, B.,Enggist, A.,Jehle, T.(2005).Energy turnover at the Race Across America (RAAM)-a case report.Int. J. Sports Med.,26(6),499-503.
17. Knechtle, B.,Joleska, I.,Wirth, A.,Knechtle, P.,Rosemann, T.,Senn, O.(2010).Intra- and inter-judge reliabilities in measuring the skinfold thicknesses of ultra runners under field conditions.Percept. Mot. Skills,111(1),105-106.
18. Knechtle, B.,Knechtle, P.,Lepers, R.(2011).Participation and performance trends in ultra-triathlons from 1985 to 2009.Scand. J. Med. Sci. Sports,21(6),e82-e90.
19. Knechtle, B.,Wirth, A.,Knechtle, P.,Rosemann, T.(2009).Moderate association of anthropometry, but not training volume, with race performance in male ultraendurance cyclists.Res. Q. Exerc. Sport,80(3),563-568.
20. Lee, R. C.,Wang, Z.,Heo, M.,Ross, R.,Janssen, I.,Heymsfield, S. B.(2000).Total-body skeletal muscle mass: development and crossvalidation of anthropometric prediction models.Am. J. Clin. Nutr.,72(3),796-803.
21. Lindeman, A. K.(1991).Nutrient intake of an ultraendurance cyclist.Int. J. Sport Nutr.,1(1),79-85.
22. Lucas, S. J.,Anson, J. G.,Palmer, C. D.,Hellemans, I. J.,Cotter, J. D.(2009).The impact of 100 hours of exercise and sleep deprivation on cognitive function and physical capacities.J. Sports Sci.,27(7),719-728.
23. Martin, B. J.(1981).Effect of sleep deprivation on tolerance of prolonged exercise.Eur. J. Appl. Physiol. Occup. Physiol.,47(4),345-354.
24. Meney, I.,Waterhouse, J.,Atkinson, G.,Reilly, T.,Davenne, D.(1988).The effect of one night's sleep deprivation on temperature, mood, and physical performance in subjects with different amounts of habitual physical activity.Chronobiol. Int.,15(4),349-363.
25. Nishii, T.,Umemura, Y.,Kitagawa, K.(2004).Full suspension mountain bike improves off-road cycling performance.J. Sports Med. Phys. Fitness,44(4),356-360.
26. Orzeł-Gryglewska, J.(2010).Consequences of sleep deprivation.Int. J. Occup. Med. Environ. Health,23(1),95-114.
27. O''Toole, M. L.(1989).Training for ultraendurance triathlons.Med. Sci. Sports Exerc.,21(5 Suppl),S209-S213.
28. Peters, E. M.(2003).Nutritional aspects in ultra-endurance exercise.Curr. Opin. Clin. Nutr. Metab. Care,6(4),427-434.
29. Rehrer, N. J.,Hellemans, I. J.,Rolleston, A. K.,Rush, E.,Miller, B. F.(2010).Energy intake and expenditure during a 6-day cycling stage race.Scand. J. Med. Sci. Sports,20(4),609-618.
30. Schumacher, Y. O.,Ahlgrim, C.,Prettin, S.,Pottgiesser, T.(2011).Physiology, power output and racing strategy of a race across America (RAAM) finisher.Med. Sci. Sports Exerc.,43(5),885-889.
31. Schumacher, Y. O.,Mroz, R.,Mueller, P.,Schmid, A.,Ruecker, G.(2006).Success in elite cycling: A prospective and retrospective analysis of race results.J. Sports Sci.,24(11),1149-1156.
32. Scott, J. P.,McNaughton, L. R.,Polman, R. C.(2006).Effects of sleep deprivation and exercise on cognitive, motor performance and mood.Physiol. Behav.,87(2),396-408.
33. Swain, D. P.(1994).The influence of body mass in endurance bicycling.Med. Sci. Sports Exerc.,26(1),58-63.
34. Swain, D. P.,Coast, J. R.,Clifford, P. S.,Milliken, M. C.,Stray-Gundersen, J.(1987).Influence of body size on oxygen consumption during bicycling.J. Appl. Physiol.,62(2),668-672.
35. Symons, J. D.,VanHelder, T.,Myles, W. S.(1988).Physical performance and physiological responses following 60 hours of sleep deprivation.Med. Sci. Sports Exerc.,20(4),374-380.
36. VanHelder, T.,Radomski, M. W.(1989).Sleep deprivation and the effect on exercise performance.Sports Med.,7(4),235-247.

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