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Descriptive statistics (mean (s.d., range)) for male participants in US and Hadza samples.
| variable | US sample | Hadza sample |
|---|---|---|
| height (cm) | 178.8 (6.9, 158.5–197.3) | 162.5 (7.2, 145.8–179.3) |
| weight (kg) | 78.7 (13.4, 53.1–131.9) | 51.4 (6.3, 38.8–67.2) |
| biceps (cm) | 33.4 (3.2, 26.1–42.0) | 25.1 (1.6, 22.0–28.5) |
| hand strength (kg) | 49.5 (8.1, 31.3–69.3) | 35.0 (5.6, 21.5–45.0) |
| triceps skinfold (cm) | — | 5.3 (1.8, 3.0–9.7) |
| physical aggression | 21.8 (6.6, 9–39) | — |
| T levels (pg ml–1) | 92.9 (34.2, 36.3–254.5) | — |
