Performance and Sex Differences in 'Isklar Norseman Xtreme Triathlon'

10.4077/CJP.2016.BAE420

Beat Knechtle；Pantelis Theodoros Nikolaidis；Michael Stiefel；Thomas Rosemann；Christoph Alexander Rust

athlete ； cycling ； man ； running ； swimming ； woman

The Chinese Journal of Physiology

59卷5期（2016 / 10 / 31）

276 - 283

英文

The performance and sex differences of long-distance triathletes competing in 'Ironman Hawaii' are well investigated. However, less information is available with regards to triathlon races of the Ironman distance held under extreme environmental conditions (e.g. extreme cold) such as the 'Isklar Norseman Xtreme Triathlon' which started in 2003. In 'Isklar Norseman Xtreme Triathlon', athletes swim at a water temperature of ~13-15°C, cycle at temperatures of ~5-20°C and run at temperatures of ~12-28°C in the valley and of ~2-12°C at Mt. Gaustatoppen. This study analysed the performance trends and sex differences in 'Isklar Norseman Xtreme Triathlon' held from 2003 to 2015 using mixed-effects regression analyses. During this period, a total of 175 women (10.6%) and 1,852 men (89.4%) successfully finished the race. The number of female (r^2 = 0.53, P = 0.0049) and male (r^2 = 0.37, P = 0.0271) finishers increased and the men-to-women ratio decreased (r^2 = 0.86, P ＜ 0.0001). Men were faster than women in cycling (25.41 ± 2.84 km/h versus 24.25 ± 2.17 km/h) (P ＜ 0.001), but not in swimming (3.06 ± 0.62 km/h vs. 2.94 ± 0.57 km/h), running (7.43 ± 1.13 km/h vs. 7.31 ± 0.93 km/h) and overall race time (874.57 ± 100.62 min vs. 899.95 ± 90.90 min) (P ＞ 0.05). Across years, women improved in swimming and both women and men improved in cycling and in overall race time (P ＜ 0.001). In running, however, neither women nor men improved (P ＞ 0.05). In summary, in 'Isklar Norseman Xtreme Triathlon' from 2003 to 2015, the number of successful women increased across years, women achieved a similar performance to men in swimming, cycling and overall race time, and women improved across years in swimming, cycling and overall race time.

1. Rüst, C.A.,Knechtle, B.,Knechtle, P.,Wirth, A.,Rosemann, T.(2012).A comparison of anthropometric and training characteristics among recreational male Ironman triathletes and ultra-endurance cyclists.Chinese J. Physiol.,55,114-124.
   連結：
2. Rüst, C.A.,Knechtle, B.,Knechtle, P.,Wirth, A.,Rosemann, T.(2012).A comparison of anthropometric and training characteristics among recreational male Ironman triathletes and ultra-endurance cyclists.Chinese J. Physiol.,55,114-124.
   連結：
3. Rüst, C.A.,Knechtle, B.,Wirth, A.,Knechtle, P.,Ellenrieder, B.,Rosemann, T.,Lepers, R.(2012).Personal best times in an Olympic distance triathlon and a marathon predict an ironman race time for recreational female triathletes.Chinese J. Physiol.,55,156-162.
   連結：
4. Cheuvront, S.N.,Carter, R.,Deruisseau, K.C.,Moffatt, R.J.(2005).Running performance differences between men and women: an update.Sports Med.,35,1017-1024.
5. Cordain, L.,Kopriva, R.(1991).Wetsuits, body density and swimming performance.Brit. J. Sports Med.,25,31-33.
6. Dähler, P.,Rüst, C.A.,Rosemann, T.,Lepers, R.,Knechtle, B.(2014).Nation related participation and performance trends in 'Ironman Hawaii' from 1985 to 2012.BMC Sports Sci. Med. Rehabil.,6,16.
7. Ely, M.R.,Cheuvront, S.N.,Roberts, W.O.,Montain, S.J.(2007).Impact of weather on marathon-running performance.Med. Sci. Sports Exerc.,39,487-493.
8. Ely, M.R.,Martin, D.E.,Cheuvront, S.N.,Montain, S.J.(2008).Effect of ambient temperature on marathon pacing is dependent on runner ability.Med. Sci. Sports Exerc.,40,1675-1680.
9. Gallmann, D.,Knechtle, B.,Rüst, C.A.,Rosemann, T.,Lepers, R.(2014).Elite triathletes in 'Ironman Hawaii' get older but faster.Age,36,407-416.
10. Ghiani, G.,Marongiu, E.,Melis, F.,Angioni, G.,Sanna, I.,Loi, A.,Pusceddu, M.,Pinna, V.,Crisafulli, A.,Tocco, F.(2015).Body composition changes affect energy cost of running during 12 months of specific diet and training in amateur athletes.Appl. Physiol. Nutr. Metab.,40,938-944.
11. Haake, S.J.(2009).The impact of technology on sporting performance in Olympic sports.J. Sports Sci.,27,1421-1431.
12. Janssen, I.,Heymsfield, S.B.,Wang, Z.M.,Ross, R.(2000).Skeletal muscle mass and distribution in 468 men and women aged 18-88 yr.J. Appl. Physiol.,89,81-88.
13. Jeukendrup, A.E.,Martin, J.(2001).Improving cycling performance: how should we spend our time and money.Sports Med.,31,559-569.
14. Knechtle, B.,Knechtle, P.,Rüst, C.A.,Rosemann, T.(2011).A comparison of anthropometric and training characteristics of Ironman triathletes and Triple Iron ultra-triathletes.J. Sports Sci.,29,1373-1380.
15. Knechtle, B.,Müller, G.,Willmann, F.,Kotteck, K.,Eser, P.,Knecht, H.(2004).Fat oxidation in men and women endurance athletes in running and cycling.Int. J. Sports Med.,25,38-44.
16. Knechtle, B.,Rosemann, T.,Lepers, R.,Rüst, C.A.(2014).Women outperform men in ultradistance swimming: the Manhattan Island Marathon Swim from 1983 to 2013.Int. J. Sports Physiol. Perform.,9,913-924.
17. Knechtle, B.,Rosemann, T.,Rüst, C.A.(2015).Ice swimming - 'Ice Mile' and '1 km Ice event'.BMC Sports Sci. Med. Rehabil.,7,20.
18. Knechtle, B.,Rosemann, T.,Rüst, C.A.(2015).Women cross the 'Catalina Channel' faster than men.Springerplus,4,332.
19. Knechtle, B.,Rosemann, T.,Zingg, M.A.,Rüst, C.A.(2015).Increase in participation but decrease in performance in age group mountain marathoners in the 'Jungfrau Marathon': a Swiss phenomenon?.Springerplus,4,523.
20. Knechtle, B.,Wirth, A.,Baumann, B.,Knechtle, P.,Rosemann, T.,Oliver, S.(2010).Differential correlations between anthropometry, training volume, and performance in male and female Ironman triathletes.J. Strength Cond. Res.,24,2785-2793.
21. Lepers, R.(2008).Analysis of Hawaii ironman performances in triathletes from 1981 to 2007.Med. Sci. Sports Exerc.,40,1828-1834.
22. Lepers, R.,Cattagni, T.(2012).Do older athletes reach limits in their performance during marathon running?.Age,34,773-781.
23. Lepers, R.,Maffiuletti, N.(2011).Age and gender interactions in ultraendurance performance: insight from triathlon.Med. Sci. Sports Exerc.,43,134-139.
24. Lepers, R.,Rüst, C.A.,Stapley, P.J.,Knechtle, B.(2013).Relative improvements in endurance performance with age: evidence from 25 years of Hawaii Ironman racing.Age,35,953-962.
25. Perez-Gomez, J.,Rodriguez, G.V.,Ara, I.,Olmedillas, H.,Chavarren, J.,González-Henriquez, J.J.,Dorado, C.,Calbet, J.A.(2008).Role of muscle mass on sprint performance: gender differences?.Eur. J. Appl. Physiol.,102,685-694.
26. Rüst, C.A.,Bragazzi, N.L.,Signori, A.,Stiefel, M.,Rosemann, T.,Knechtle, B.(2015).Nation related participation and performance trends in 'Norseman Xtreme Triathlon' from 2006 to 2014.Springerplus,4,469.
27. Rüst, C.A.,Knechtle, B.,Knechtle, P.,Rosemann, T.(2013).A comparison of anthropometric and training characteristics between recreational female marathoners and recreational female Ironman triathletes.Chinese J. Physiol.,56,1-10.
28. Rüst, C.A.,Knechtle, B.,Rosemann, T.,Lepers, R.(2012).Sex difference in race performance and age of peak performance in the Ironman Triathlon World Championship from 1983 to 2012.Extrem. Physiol. Med.,1,15.
29. Stiefel, M.,Knechtle, B.,Lepers, R.(2014).Master triathletes have not reached limits in their Ironman triathlon performance.Scand. J. Med. Sci. Sports,24,89-97.
30. Stiefel, M.,Knechtle, B.,Rüst, C.A.,Rosemann, T.,Lepers, R.(2013).The age of peak performance in Ironman triathlon: a crosssectional and longitudinal data analysis.Extrem. Physiol. Med.,2,27.
31. Stiefel, M.,Rüst, C.A.,Rosemann, T.,Knechtle, B.(2013).A comparison of participation and performance in age-group finishers competing in and qualifying for Ironman Hawaii.Int. J. Gen. Med.,6,67-77.
32. Toussaint, H.M.,de Groot, G.,Savelberg, H.H.,Vervoorn, K.,Hollander, A.P.,van Ingen Schenau, G.J.(1988).Active drag related to velocity in male and female swimmers.J. Biomech.,21,435-438.
33. Vihma, T.(2010).Effects of weather on the performance of marathon runners.Int. J. Biometeorol.,54,297-306.
34. Zingg, M.A.,Knechtle, B.,Rüst, C.A.,Rosemann, T.,Lepers, R.(2013).Reduced performance difference between sexes in master mountain and city marathon running.Int. J. Gen. Med.,6,267-275.