Physiological, Spatiotemporal, Anthropometric, Training, and Performance Characteristics of a 75-Year-Old Multiple World Record Holder Middle-Distance Runner

Purpose: This study assessed the cardiorespiratory capacity, anaerobic speed reserve, and anthropometric and spatiotemporal variables of a 75-year-old world-class middle-distance runner who previously obtained several European and world records in the age categories of 60-70 years, achieved 13 European titles and 15 world champion titles, and also holds several European records for the 75-year-old category. Methods: Heart rate, oxygen uptake, carbon dioxide production, ventilation, step frequency, contact time, and velocity at maximal oxygen uptake (VO2max) were measured during treadmill running. Maximal sprinting speed was assessed during track sprinting and used to compute anaerobic speed reserve. Body fat percentage was assessed using air displacement plethysmography. Results: Body fat percentage was 8.6%, VO2max was 50.5 mL center dot kg-1 center dot min-1, maximal ventilation was 141 L center dot min-1, maximum heart rate was 164 beats center dot min-1, maximum respiratory exchange ratio was 1.18, and velocity at VO2max was 16.7 km center dot h-1. The average stride frequency and contact time during the last 30 seconds of the 4-minute run at 10 km center dot h-1 were 171 steps center dot min-1 and 241 ms and 187 steps center dot min-1 and 190 ms in the last 40 seconds at 17 km center dot h-1, respectively. The anaerobic speed reserve was 11.4 km center dot h-1, corresponding to an anaerobic speed reserve ratio of 1.68. Conclusion: This 75 -year-old runner has an exceptionally high VO2max and anaerobic speed reserve ratio. In addition, his resilience to injuries, possibly due to a relatively high volume of easy runs, enabled him to sustain regular training since his 50s and achieve international performance in his age group.