Scientific approach to the 1-h cycling world record: a case study

• Published in: Journal of applied physiology (1985) 2000-10, Vol.89 (4), p.1522-1527
• Main Authors: Padilla, Sabino, Mujika, Inigo, Angulo, Francisco, Goiriena, Juan Jose
• Format: Article
• Language: English
• Subjects: Adult; Aerodynamics; Bicycling; Bicycling - physiology; Biological and medical sciences; Blood; Body Height; Body Weight; Case studies; Exercise - physiology; Fundamental and applied biological sciences. Psychology; Heart Rate - physiology; Humans; Lactates - blood; Male; Mathematical models; Oxygen Consumption - physiology; Records & achievements; Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports; Wind
• ISSN: 8750-7587; 1522-1601
• DOI: 10.1152/jappl.2000.89.4.1522

1  Departamento de Investigación y Desarrollo, Servicios Médicos, Athletic Club de Bilbao; 2  Mediplan Sport, Vitoria-Gasteiz; and 3  Instituto Médico Basurto, Universidad del País Vasco (UPV-EHU), Leioa, Basque Country, Spain The purpose of this study was to describe the physiological and aerodynamic characteristics and the preparation for a successful attempt to break the 1-h cycling world record. An elite professional road cyclist (30 yr, 188 cm, 81 kg) performed an incremental laboratory test to assess maximal power output ( max ) and power output ( OBLA ), estimated speed ( V OBLA ), and heart rate (HR OBLA ) at the onset of blood lactate accumulation (OBLA). He also completed an incremental velodrome (cycling track) test (VT1), during which V OBLAVT1 and HR OBLAVT1 were measured and OBLAVT1 was estimated. max was 572 W, OBLA 505 W, V OBLA 52.88 km/h, and HR OBLA 183 beats/min. V OBLAVT1 , HR OBLAVT1 , and OBLAVT1 were 52.7 km/h, 180 beats/min, and 500.6 W, respectively. Drag coefficient and shape coefficient, measured in a wind tunnel, were 0.244 and 0.65 m 2 , respectively. The cyclist set a world record of 53,040 m, with an estimated average power output of 509.5 W. Based on direct laboratory data of the power vs. oxygen uptake relationship for this cyclist, this is slightly higher than the 497.25 W corresponding to his oxygen uptake at OBLA (5.65 l/min). In conclusion, 1 ) the 1-h cycling world record is the result of the interaction between physiological and aerodynamic characteristics; and 2 ) performance in this event can be predicted using mathematical models that integrate the principal performance-determining variables. power output; onset of blood lactate accumulation; steady state; aerodynamics; performance; modeling