Table 1. Average ± SD peak metatarsophalangeal joint (MTPJ) dorsiflexion angles during push off in humans and chimpanzees.
| MTPJ | Human (N = 25) | Chimp Biped (N = 20) | Chimp Quadruped (N = 10) |
|---|---|---|---|
| 1 | 48 ± 12°* | 12 ± 7° | 12 ± 4° |
| 2 | 48 ± 4°* | 30 ± 6° | 33 ± 5° |
| 3 | 47 ± 4°* | 23 ± 5°§ | 28 ± 3° |
| 4 | 41 ± 7°* | 14 ± 4° | 17 ± 3° |
| 5 | 21 ± 6°* | 11 ± 3° | 13 ± 6° |
*Significant difference between human and chimpanzee (bipedal and quadrupedal) angles (P < 0.001).
§Significant difference between chimpanzee bipedal and chimpanzee quadrupedal angles (P < 0.003).