6-Year Follow-Up of a World Record Breaking Master Marathon Runner.
Fiche publication
Date publication
octobre 2024
Journal
Journal of applied physiology (Bethesda, Md. : 1985)
Auteurs
Membres identifiés du Cancéropôle Est :
Pr LEPERS Romuald
Tous les auteurs :
Romberger NT, Stock JM, McMillan RK, Overstreet ML, Lepers R, Joyner MJ, Farquhar WB
Lien Pubmed
Résumé
Endurance performance declines with advancing age. Of the three main physiological factors that determine endurance running performance (maximal oxygen consumption [V̇Omax], lactate threshold, and running economy [RE]), V̇Omax appears to be most affected by age. While endurance performance declines with age, recently, endurance performance has rapidly improved in master athletes as the number of master athletes competing in endurance events has increased. Master athletes represent an intriguing model to study healthy aging. In this case study, we reassessed the physiological profile of a 76-year-old distance runner who broke the marathon world record for men over 70 years of age in 2018. This runner was tested a few months before breaking the world record and retested in 2024. Between 2018 and 2024, his marathon running velocity decreased significantly. Therefore, the purpose of this case study was to determine the physiological changes that explain his performance decline. RE remained similar to 2018, and while there was not a clear breakpoint in blood lactate, he still likely runs marathons at a high percentage (~90%) of his V̇Omax. However, V̇Omax declined by 15.1%. HRmax declined by 3.2% and maximal O pulse declined by 12.4%, suggesting that maximal stroke volume and/or arteriovenous O difference decreased. Altogether, although this marathoner continues to compete at an elite level, his performance has declined since his record-breaking marathon due to a reduction in V̇Omax. This is likely caused by reductions in maximal stroke volume and/or arteriovenous O difference. We speculate that these changes reflect primarily age-related processes.
Mots clés
aging, case study, master athlete, oxygen consumption, running
Référence
J Appl Physiol (1985). 2024 10 3;: