Case studies in Physiology: Analysis of the World record time for combined father and son marathon The aim of this study was to examine the physiological profiles and the pacing of the father (59 years old) and the son (34 years old), which the world record time (4:59:22 h: min: s; Father: 2:27: 52 H: Min: S, son: 2:31:30 h: min: s) have broken for the combined father-son marathon in 2019. The oxygen uptake (VO2), the heart rate (HR), the breathing (VE), the blood lactate concentration (LA) and the tread economy (RE) were measured during treadmill running tests. The total distance of the marathon was divided into 8 sections of 5 km and a last section of 2.195 km, and the relative average running speed on each section was calculated individually.Vo2max, Hrmax, Vemax, Lamax were 65.4 ml × kg-1 × min-1, 165 beats × min-1, 115 l × min-1, 5.7 mmol × L-1 for the father and 66.9ML × kg-1 × min-1, 181 beats × min-1, 153 l × min-1, 11.5 mmol × L-1 for the son.At 17 km × H-1 fraud re 210 ml × kg-1 × min-1 for the father and 200 ml × kg-1 × min-1 for the son, and% Vo2max was 90.9% for the father and 84, 5% for the son. The father held a uniform running speed during the marathon (running speed CV <1%), while the son ran the second half marathon 7% slower than the first, and his running speed dropped significantly from the 35th kilometer. Father and son, who had broken the world record time for the combined marathon of father and son, had a similar performance level, but their physiological profiles and pacing strategies during the marathon were different.
A more uniform speed for the son could help you to improve your own time in the near future. The case report can be found under https://pubmed.ncbi.nlm.nih.gov/31917623/