How did Su Bingtian run his personal best of 9.83 seconds in the 100m at 31 years old? | Forum

Generally speaking, taller athletes reach their peak performance earlier and start to decline in performance later than shorter athletes. Usain Bolt, for example, ran the majority of his fastest 100m sprint races earlier than 26 years of age. He is 6′5 which makes him an outlier amongst sprinters, as most sprinters are around 6 feet tall. Most sprinters hit their prime when they're in their late 20s, and sometimes early 30s. Usain Bolt is an outlier, as he hit his prime in his early-mid 20s. This is expected since he's significantly taller than most sprinters. Su on the other hand is a very average size and build for a sprinter, o it's not so supprising that he ran a pb at the age of 31.