On 11 July 2019, Alison Dos Santos (Brazil) ran their 400 metres hurdles in 48.57 seconds at Napoli (Universiade).
On 4h/world, this time earns Alison a Top 29% World ranking.
| 17.82 |
| 8.66 |
13 L |
L |
| H5 | 3.96(-0.08) | 21.78 | 8.84 | 13 L | L |
| H6 | 4.04(+0.08) | 25.82 | 8.66 | 13 L | L |
| H7 | 4.18(+0.14) | 30.00 | 8.37 | 13 L | L |
| H8 | 4.41(+0.23) | 34.41 | 7.94 | 14 R | R |
| H9 | 4.48(+0.07) | 38.89 | 7.81 | 14 L | L |
| H10 | 4.56(+0.08) | 43.45 | 7.68 | 14 R | R |
| Finish | 5.12 | 48.57 | 7.81 | — — | — |
Avg. interval
4.16s
Std. deviation
0.25
Deceleration
Stride pattern
Very consistent intervals (σ=0.25s).
Fastest interval: 3.78s (H2–H3).
Very low deceleration (5.5%: 8.49 → 8.03 m/s), a likely sign of an over-managed first half.
Steady stride pattern.
Lead leg alternation: 8× Left, 2× Right.
All-time slowest sectors
Max speed
9.26m/s
Avg speed
8.24m/s
Std. deviation
0.25s