No Correlation of Skin-Fold Thickness with Race Performance in Male Recreational Mountain Bike Ultra-Marathoners

Knechtle, Beat; Rosemann, Thomas

doi:10.2478/v10036-009-0023-4

Cited by 10 publications

(9 citation statements)

References 27 publications

(34 reference statements)

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“…In ultra-cyclists, a lower body fat was associated with a faster race time (Knechtle, et al, 2009d), but not skin-fold thicknesses (Knechtle & Rosemann, 2009;Knechtle, et al, 2009b). An interesting finding was that no anthropometric variables were related to overall race time after bivariate analysis in the Race Across America-qualifiers, but body fat and the sum of total skin-fold thicknesses were significantly and positively associated with overall race time in the Paris-Brest-Paris-qualifiers.…”

Section: Discussionmentioning

confidence: 91%

“…Their findings include differences among cyclists and changes in many variables related to the extreme race distances and training regimens, such as in body mass (Bircher, Enggist, Jehle, & Knechtle, 2006;Knechtle, Enggist, & Jehle, 2005;Knechtle, Wirth, Knechtle, & Rosemann, 2009a), intensity and energy turnover (Bircher, et al, 2006;Francescato & Di Prampero, 2002;Knechtle, et al, 2005;Reher, Hellemans, Rolleston, Rush, Miller, 2009;Wirnitzer & Kornexl, 2008), and nutrition (Ebert, Martin, Stephens, McDonald, & Withers, 2007;Martin, Martin, Collier, & Burke, 2002). Other studies have tested associations between race performance measures and anthropometric and training variables (Knechtle & Rosemann, 2009;Knechtle, Knechtle, Rosemann, 2009b;Knechtle, Wirth, Knechtle, & Rosemann, 2009c).…”

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confidence: 99%

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A Comparison of Ultra-Endurance Cyclists in a Qualifying Ultra-Cycling Race for Paris-Brest-Paris and Race across America—Swiss Cycling Marathon

Knechtle¹,

Wirth²,

Knechtle³

et al. 2012

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Ultra-endurance events test the adaptation of human physiology to extreme physical and mental demands, high levels of training, motivation, and physical conditioning among participants. To understand basic differences among participants according to the severity of the race, participants in qualifying events for two ultra-endurance cycling races, differing in length and intensity, were compared on measures of anthropometry, training, and support. One race was four times longer, required supporting teams, and racers typically had little sleep, which should lead to the qualifiers being substantially more highly trained than those from the shorter race. The qualifiers in the longer race had greater intensity in training while the qualifiers in the shorter race relied more on training volume. Different strategies and types of training reflected the different demands of the races. Future studies should evaluate personality and motivational differences in ultra-endurance events and between these athletes and athletes in other sports.

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Section: Discussionmentioning

confidence: 91%

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confidence: 99%

A Comparison of Ultra-Endurance Cyclists in a Qualifying Ultra-Cycling Race for Paris-Brest-Paris and Race across America—Swiss Cycling Marathon

Knechtle¹,

Wirth²,

Knechtle³

et al. 2012

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“…The finding that calf skin-fold thickness is related to running performance could be reproduced only in one study investigating ultra-marathoners (27). For other ultra-endurance athletes such as ultra-cyclists (20,28), however, skinfold thicknesses of the lower limbs were not related to an ultra-endurance performance.…”

Section: Discussionmentioning

confidence: 96%

A Comparison of Anthropometric and Training Characteristics among Recreational Male Ironman Triathletes and Ultra-Endurance Cyclists

2012

Chin. J. Physiol.

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"The physique of Ironman triathletes was considered to be similar to that of cyclists. We intended to investigate differences and similarities in anthropometry and training between 83 Ironman triathletes competing in a qualifier for 'Ironman Hawaii' and 84 ultra-endurance cyclists competing in a qualifier for the 'Race across America'. The anthropometric and training characteristics were compared between these two groups of athletes; associations of anthropometric and training characteristics with race time were investigated using bi- and multi-variate analysis. The Ironman triathletes had shorter legs, lower circumferences of upper arm, thigh and calf and a lower skeletal muscle mass compared to the ultra- cyclists. The Ironman triathletes invested more weekly training hours but fewer weekly cycling hours than the ultra-cyclists; the ultra-cyclists completed more cycling kilometres per week. In the multi- variate analysis, the skin-fold thicknesses at abdominal (P = 0.02) and iliacal site (P = 0.02) as well as percent body fat (P = 0.0008) were associated with race time for the Ironman triathletes. The abdominal (P = 0.003) and the iliacal (P = 0.02) skin-fold thicknesses, percent body fat (P = 0.001) and cycling speed during training (P = 0.01) were related to cycling split time in the Ironman race. For the ultra-cyclists, percent body fat (P = 0.04) was related to race time. We concluded that anthropometry and training of Ironman triathletes were different when compared to ultra-endurance cyclists."

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“…Skinfold thicknesses, however, generally refl ect body composition and the metabolic/dietary energy balance between the calorie intake and what the body has used. Endurance athletes often have relatively low body fat percentages (4,(9)(10)(11)(12)(13)(21)(22)(23)(24)(25)(26). However, other factors infl uence the storage of body fat, such as genetics, hormone levels, training levels, and exposure to low temperatures (acclimatization).…”

Section: Discussionmentioning

confidence: 99%

“…Ultra-endurance is defi ned as performance for 6 hours or more (8). No association has been found between skinfold thicknesses and race performance in male ultra-endurance cyclists competing in a 600-km ultracycling marathon for 1596 (SD 296) min (21) and in male mountain bike ultra-marathoners in a 120-km race over 541 (SD 81) minutes (22). For ultra-marathoners, in contrast, volume (23) and intensity in training (24), as well as personal best time in a marathon (24)(25)(26), seem to predict race performance, but not anthropometric characteristics.…”

Section: Discussionmentioning

confidence: 99%

Leg Skinfold Thicknesses and Race Performance in Male 24-Hour Ultra-Marathoners

Knechtle¹,

Knechtle²,

Rüst³

et al. 2011

Baylor University Medical Center Proceedings

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The association of skinfold thicknesses with race performance has been investigated in runners competing over distances of ≤50 km. This study investigated a potential relation between skinfold thicknesses and race performance in male ultra-marathoners completing >50 km in 24 hours. Variables of anthropometry, training, and previous performance were related to race performance in 63 male ultra-marathoners aged 46.9 (standard deviation [SD] 10.3) years, standing 1.78 (SD 0.07) m in height, and weighing 73.3 (SD 7.6) kg. The runners clocked 146.1 (SD 43.1) km during the 24 hours. In the bivariate analysis, several variables were associated with race performance: body mass (r = -0.25); skinfold thickness at axilla (r = -0.37), subscapula (r = -0.28), abdomen (r = -0.31), and suprailiaca (r = -0.30); the sum of skinfold thicknesses (r = -0.32); percentage body fat (r = -0.32); weekly kilometers run (r = 0.31); personal best time in a marathon (r = -0.58); personal best time in a 100-km ultra-run (r = -0.31); and personal best performance in a 24-hour run (r = 0.46). In the multivariate analysis, no anthropometric or training variable was related to race performance. In conclusion, in contrast to runners up to distances of 50 km, skinfold thicknesses of the lower limbs were not related to race performance in 24-hour ultra-marathoners.

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No Correlation of Skin-Fold Thickness with Race Performance in Male Recreational Mountain Bike Ultra-Marathoners

Cited by 10 publications

References 27 publications

A Comparison of Ultra-Endurance Cyclists in a Qualifying Ultra-Cycling Race for Paris-Brest-Paris and Race across America—Swiss Cycling Marathon

A Comparison of Ultra-Endurance Cyclists in a Qualifying Ultra-Cycling Race for Paris-Brest-Paris and Race across America—Swiss Cycling Marathon

A Comparison of Anthropometric and Training Characteristics among Recreational Male Ironman Triathletes and Ultra-Endurance Cyclists

Leg Skinfold Thicknesses and Race Performance in Male 24-Hour Ultra-Marathoners

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