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Baseline demographic characteristics
| Young men (n = 8) | Young women (n =11) | Elderly men (n =8) | Elderly women (n =8) | |
|---|---|---|---|---|
| Mean age (range) (years) | 24 (18–39) | 31 (18–44) | 70 (66–74) | 70 (65–76) |
| Mean weight (range) (kg) | 74 (61–90) | 65 (44–84) | 79 (72–93) | 62 (50–73) |
| White | 7 | 9 | 8 | 8 |
| Black | 1 | 1 | 0 | 0 |
| Hispanic | 0 | 1 | 0 | 0 |
