On 9 June 2017, Mohamed Seghaier (Tunisia) ran their 400 metres hurdles in 51.31 seconds at Albi (France Championships).
| 18.34 |
| 8.33 |
14 L |
L |
| H5 | 4.20(0.00) | 22.54 | 8.33 | 13 L | L |
| H6 | 4.40(+0.20) | 26.94 | 7.95 | 14 R | R |
| H7 | 4.52(+0.12) | 31.46 | 7.74 | 14 L | L |
| H8 | 4.68(+0.16) | 36.14 | 7.48 | 15 L | L |
| H9 | 4.76(+0.08) | 40.90 | 7.35 | 15 L | L |
| H10 | 4.92(+0.16) | 45.82 | 7.11 | 15 L | L |
| Finish | 5.49 | 51.31 | 7.29 | — — | — |
Avg. interval
4.40s
Std. deviation
0.33
Deceleration
Stride pattern
Fastest interval: 3.88s (H2–H3).
Excellent fatigue resistance: only 8.9% speed loss between the first and second halves (8.21 → 7.47 m/s).
Steady stride pattern.
Lead leg alternation: 8× Left, 2× Right.