Skin-fold Thickness and Training Volume in Ultra-triathletes

Abstract

We investigated the relationship between variables of anthropometry and training volume on race performance in 29 male non-professional ultra-triathletes. Anthropometric variables were determined in order to calculate body mass index, sum of skin-folds and percent body fat. Participants kept a comprehensive training diary recording their training volume in hours and kilometres in the 3 months before the race. The relationship of anthropometry and average weekly training volume with race performance was investigated with linear regression analysis. The sum of 8 skin-fold thicknesses was associated with total race time (r²=0.33, p<0.001), whereas the average weekly training volume was not (r²=0.00, p>0.05). The training volume showed no association with the sum of 8 skin-folds (r²=0.00, p>0.05). The sum of 8 skin-folds was neither associated with speed in the swim (r²=0.10, p>0.05) nor in the bike split (r²=0.10, p>0.05) but showed a significant association with speed in the run split (r²=0.38, p<0.0001). We concluded that anthropometry was of more importance than training volume in male Triple Iron triathletes and that these athletes were close to runners regarding the relationship of anthropometry with race performance.

Key words

ultra-endurance - body fat - anthropometry

References

• 1 Arrese AL, Ostariz ES. Skinfold thicknesses associated with distance running performance in highly trained runners.  J Sports Sci. 2006;  24 69-76
• 2 Bale P, Rowell S, Colley E. Anthropometric and training characteristics of female marathon runners as determinants of distance running performance.  J Sports Sci. 1985;  3 115-126
• 3 Bale P, Bradbury D, Colley E. Anthropometric and training variables related to 10 km running performance.  Br J Sports Med. 1986;  20 170-173
• 4 Ball SD, Altena TS, Swan PD. Comparison of anthropometry to DXA: a new prediction equation for men.  Eur J Clin Nutr. 2004;  58 1525-1531
• 5 Geladas ND, Nassis GP, Pavlicevic S. Somatic and physical traits affecting sprint swimming performance in young swimmers.  Int J Sports Med. 2005;  26 139-144
• 6 Hagan RD, Upton SJ, Duncan JJ, Gettman LR. Marathon performance in relation to maximal aerobic power and training indices in female distance runners.  Br J Sports Med. 1987;  21 3-7
• 7 Jagomagi G, Jurimae T. The influence of anthropometrical and flexibility parameters on the results of breaststroke swimming.  Anthropol Anz. 2005;  63 213-219
• 8 Keatinge WR, Khartchenko M, Lando N, Kioutov V. Hypothermia during sports swimming in water below 11 degrees C.  Br J Sports Med. 2001;  35 352-353
• 9 Knechtle B, Duff B, Welzel U, Kohler G. Body mass and circumference of upper arm are associated with race performance in ultra-endurance runners in a multi-stage race – the Isarrun 2006.  Res Q Exerc Sport. 2008;  , in press
• 10 Knechtle B, Knechtle P, Schulze I, Kohler G. Upper arm circumference has an effect on race performance in ultra-endurance runners.  Br J Sports Med. 2008;  42 295-299
• 11 Knechtle B, Kohler G. Running performance not anthropometric factors is associated with race success in a Triple Iron Triathlon.  Br J Sports Med Jan. 2008;  , doi:10.1136/bjsm.2007.039602
• 12 Knechtle B, Duff B, Amtmann G, Kohler G. Cycling and running performance, not anthropometric factors, are associated with race performance in a Triple Iron Triathlon.  Res Sports Med. 2007;  15 257-269
• 13 Landers GJ, Blanksby BA, Ackland TR, Smith D. Morphology and performance of world triathletes.  Ann Hum Biol. 2000;  27 387-400
• 14 Leake CN, Carter JE. Comparison of body composition and somatotype of trained female triathletes.  J Sports Sci. 1991;  9 125-135
• 15 Lee RC, Wang Z, Heo M, Ross R, Janssen I, Heymsfield SB. Total-body skeletal muscle mass: development and cross-validation of anthropometric prediction models.  Am J Clin Nutr. 2000;  72 796-803
• 16 Legaz Arrese A, Gonzalez Badillo JJ, Serrano Ostariz E. Differences in skinfold thicknesses and fat distribution among top-class runners.  J Sports Med Phys Fitness. 2005;  45 512-517
• 17 Legaz A, Eston R. Changes in performance, skinfold thicknesses, and fat patterning after three years of intense athletic conditioning in high level runners.  Br J Sports Med. 2005;  39 851-856
• 18 Maldonado S, Mujika I, Padilla S. Influence of body mass and height on the energy cost of running in highly trained middle- and long-distance runners.  Int J Sports Med. 2002;  23 268-272
• 19 McLean BD, Parker AW. An anthropometric analysis of elite Australian track cyclists.  J Sports Sci. 1989;  7 247-255
• 20 Sharwood K, Collins M, Goedecke J, Wilson G, Noakes T. Weight changes, sodium levels, and performance in the South African Ironman triathlon.  Clin J Sport Med. 2002;  12 391-399
• 21 Siders WA, Lukaski HC, Bolonchuk WW. Relationships among swimming performance, body composition and somatotype in competitive collegiate swimmers.  J Sports Med Phys Fitness. 1993;  33 166-171
• 22 Sleivert GG, Rowlands DS. Physical and physiological factors associated with success in the triathlon.  Sports Med. 1996;  22 8-18
• 23 Tanaka K, Matsuura Y. A multivariate analysis of the role of certain anthropometric and physiological attributes in distance running.  Ann Hum Biol. 1982;  9 473-482
• 24 Tuuri G, Loftin M, Oescher J. Association of swim distance and age with body composition in adult female swimmers.  Med Sci Sports Exerc. 2002;  34 2110-2114

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