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Open AccessCase Report

Self-Selected Pacing during a 24 h Track Cycling World Record

Medbase St. Gallen Am Vadianplatz, 9000 St. Gallen, Switzerland
Institute of Primary Care, University of Zurich, 8006 Zurich, Switzerland
Exercise Physiology Laboratory, 18450 Nikaia, Greece
School of Health and Caring Sciences, University of West Attica, 11244 Athens, Greece
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2019, 16(16), 2943;
Received: 24 July 2019 / Revised: 6 August 2019 / Accepted: 13 August 2019 / Published: 16 August 2019
(This article belongs to the Special Issue Health, Exercise and Sports Performance)
The present case study analyzed the pacing in a self-paced world record attempt during a 24 h track cycling event by the current world record holder. The cyclist completed 3767 laps on a 250 m long cycling track and covered a total distance of 941.873 km, breaking the existing world record by 37.99 km. The average cycling speed was 39.2 ± 1.9 km/h (range 35.5–42.8 km/h) and the power output measured was 214.5 ± 23.7 W (range 190.0–266.0 W) during the 24 h of cycling. We found a positive pacing result with negative correlations between cycling speed (r = −0.73, p < 0.001), power output (r = −0.66, p < 0.001), and laps per hour (r = −0.73, p < 0.001) and the covered distance. During the 24 h, we could identify four different phases: the first phase lasting from the start till the fourth hour with a relatively stable speed; the second phase from the fourth till the ninth hour, characterized by the largest decrease in cycling speed; the third phase from the ninth hour till the 22nd hour, showing relatively small changes in cycling speed; and the last phase from the 22nd hour till the end, presenting a final end spurt. The performance in the 24 h track cycling was 45.577 km better than in the 24 h road cycling, where the same athlete cycled slower but with higher power output. In summary, the current world-best ultracyclist covered more kilometers with less power output during the world record 24 h track cycling than during his world record 24 h road cycling. This was most probably due to the more favorable environmental conditions in the velodrome, which has no wind and stable temperatures. View Full-Text
Keywords: bike; ultraendurance; athlete; cycling speed; power output bike; ultraendurance; athlete; cycling speed; power output
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Knechtle, B.; Rosemann, T.; Nikolaidis, P.T. Self-Selected Pacing during a 24 h Track Cycling World Record. Int. J. Environ. Res. Public Health 2019, 16, 2943.

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