Table 1. Measures of interest for Shuar and industrialized cohorts.
| Population | ||
| Shuar (n = 44) | Industrial (n = 40)† | |
| Descriptive, mean (95% CI) | ||
| Sex (% male) | 50% | 56% |
| Age (years) | 8.1 (7.5 to 8.7)* | 7.1 (6.7 to 7.5) |
| Anthropometry, adjusted mean (95% CI) | ||
| Stature (cm) | 117.0 (115.2 to 118.8)*** | 124.6 (122.7 to 126.4) |
| Body mass (kg) | 22.8 (21.6 to 24.0)*** | 26.0 (24.7 to 27.3) |
| Body mass index (kg/m2) | 16.5 (16.1 to 17.0) | 16.5 (16.1 to 17.0) |
| Fat mass (kg)‡ | 2.7 (2.4 to 3.0)*** | 5.7 (5.0 to 6.4) |
| Fat-free mass (kg)‡ | 19.7 (18.9 to 20.3) | 19.5 (18.7 to 20.3) |
| Body fat percentage (%)‡ | 11.9% (11.0 to 12.9)*** | 22.4% (20.5 to 24.5) |
| Energetics, adjusted mean (95% CI) | ||
| TEE (kcal/day)‡ | 1738 (1670 to 1809) | 1811 (1733 to 1892) |
| REE (kcal/day)‡ | 1255 (1215 to 1296)*** | 1042 (1006 to 1080) |
| Activity energy expenditure (kcal/day)‡ |
276 (225 to 338)*** | 558 (447 to 698) |
| Physical activity level | 1.38 (1.31 to 1.46)*** | 1.76 (1.68 to 1.84) |
| Shuar (n = 30) | Industrial (n = 2855)§ | |
| Daily physical activity, mean (95% CI) | ||
| Activity wear time (hours/day) |
12.2 (11.6 to 12.8)*** | 13.5 (13.4 to 13.6) |
| Activity counts (CPM) | 474 (433 to 516)*** | 379 (365 to 392) |
| Sedentary activity (min/day) |
240 (228 to 252)*** | 478 (473 to 483) |
| Light activity (min/day) | 405 (382 to 428)*** | 273 (268 to 278) |
| MVPA (min/day) | 89 (76 to 102)*** | 58 (55 to 61)|| |
‡Values back-converted from analysis of log-transformed measures (table S1); *P < 0.05; ***P < 0.001; population-level differences in two-tailed t tests (daily physical activity measures) or multivariable models controlling for age and sex (anthropometry measures) or age, sex, log-FM, and log-FFM (energetics measures).
§Canadian cohort (18).
||U.K. sample reported 64 min/day of moderate-vigorous activity (17).