In 1983, Dave Scott and Sylviane Puntous won the men’s and women’s Ironman Hawaii titles in 9:05:57 and 10:43:36, respectively. In 2018, Patrick Lange and Daniela Ryf won in 7:52:39 and 8:26:18. The difference in Kona-winning times is huge but, as investigated by a group of researchers, which discipline has enjoyed the greatest performance improvements in this period? The team, led by Lucas Barbosa, analysed the top-three men and women each year between 1983 and 2018 and discovered that, perhaps not surprisingly, it was the 180km bike leg that witnessed the greatest evolution. Men enjoyed a 16.9% boost; women, a staggering
26.4%. Swimming saw the slowest rate of performance growth – men just 3%, women 12.1%. The reasons why the bike trumps the swim or run? Gear, of course, with…