On 28 May 2022, Alison Dos Santos (Brazil) ran their 400 metres hurdles in 47.23 seconds at Eugene (Diamond League).
On 4h/world, this time earns Alison a Top 6% World ranking.
| 16.98 |
| 9.38 |
12 L |
L |
| H5 | 3.73(0.00) | 20.71 | 9.38 | 12 R | R |
| H6 | 4.03(+0.30) | 24.74 | 8.68 | 12 L | L |
| H7 | 4.17(+0.14) | 28.91 | 8.39 | 13 L | L |
| H8 | 4.23(+0.06) | 33.14 | 8.27 | 13 L | L |
| H9 | 4.60(+0.37) | 37.74 | 7.61 | 14 R | R |
| H10 | 4.47(-0.13) | 42.21 | 7.83 | 13 R | R |
| Finish | 5.02 | 47.23 | 7.97 | — — | — |
Avg. interval
4.03s
Std. deviation
0.34
Deceleration
Stride pattern
Fastest interval: 3.67s (H2–H3).
Excellent fatigue resistance: only 9.2% speed loss between the first and second halves (8.93 → 8.11 m/s).
Steady stride pattern.
Lead leg alternation: 6× Left, 4× Right.
All-time slowest sectors
Max speed
9.54m/s
Avg speed
8.47m/s
Std. deviation
0.34s