Table 1.
Participants’ characteristics.
| Characteristics | Female (n=15), mean (SD) | Male (n=15), mean (SD) | Differences | P value | Overall (N=30), mean (SD) |
| Age (years) | 30.1 (1.7) | 28.9 (1.8) | −1.3 | .51 | 29.5 (5.1) |
| Body height (m) | 1.7 (0.1) | 1.8 (0.1) | 0.1 | <.001 | 1.7 (0.8) |
| Body weight (kg) | 60.2 (4.5) | 74.8 (4.7) | 14.7 | <.001 | 67.5 (8.7) |
| Body mass index (kg/m2) | 21.1 (1.3) | 23.5 (1.5) | 2.4 | <.001 | 22.3 (1.8) |
| Wrist circumference (cm) | 15.5 (0.8) | 17.1 (0.9) | 1.6 | <.001 | 16.3 (1.2) |
| Skin hair on the wrista | 0.0 (0.0) | 0.3 (0.5) | −0.3 | <.001 | 0.2 (0.4) |
| Skin colorb | 2.9 (0.4) | 2.9 (0.4) | 0.0 | >.99 | 2.9 (0.4) |
| Maximal oxygen uptake (mL/min·kg) | 49.7 (6.0) | 57.2 (5.5) | 7.5 | <.001 | 53.4 (6.8) |
| Resting heart rate (bpmc) | 54 (10) | 53 (7) | −0.7 | .82 | 54 (9) |
| Maximal heart rate (bpm) | 181 (11) | 189 (9) | 7.8 | .04 | 185 (11) |
a0=little hair, 1=moderate or a lot of hair.
bFitzpatrick scale 1 to 6.
cbpm: beats per minute.