Self-Selected Pacing During a World Record Attempt in 40 Ironman-Distance Triathlons in 40 Days In the present case study, performance, speed and potential predictors were analyzed in a world record attempt of a professional triathletes to end 40 Ironman triathlons within 40 days. Intermediate times (swimming, cycling, running) and total times, body weight, daily highest temperature, wind speed, energy consumption, middle heart rate and sleep time were recorded. Nonlinear regressions have been used to examine changes in the distribution and total times for days.Multivariate regression analyzes were performed to test which variables showed the greatest influence on the dependent variable cycle, running and overall time. The athlete completed the 40 Ironman routes in a total time of 444: 22 h: min.He spent 50:26 h: min during swimming, 245: 37 h: min at cycling, 137: 17 h: min while running and 11:02 h: min in the change zone.The swimming and cycling times were slower over the days, while the maturities were slower until the 20th day and then slower until the 40th day.The total times were slowed down until the 15th day, until the 31st faster and then began to become slower until the end. The wind speed, the final time of the previous day and heart rate during cycling were important independent variables that influenced the cycle time.The body weight and average heart rate during the run were significant independent variables that influenced the mileage.Wheel capacity, mileage and body weight were significant independent variables that influenced the total time.
In summary, the term was influenced by the body weight, cycling through the wind speed and the total time both through the running and bicycle performance. The whole case report can be found under https://www.mdpi.com/1660-4601/17/7/2390