Table 1 Participant characteristics
Variables | Total (n = 56) | Male (n = 39) | Female (n = 17) |
|---|---|---|---|
Participant Characteristics | |||
Age (years) | 20 [20, 22] | 20 [20, 22] | 20 [19, 21] |
Years of sports/athletics | 15 [13, 17] | 15 [13, 17] | 15 [13, 17] |
Body mass index (kg/m2) | 24.4 [23.3, 26.5] | 24.7 [23.5, 26.6] | 23.8 [22.3, 26.9] |
Body fat percentage‡ | 18.3 [14.8, 23.9] | 16.3 [13.5, 18.4] | 26.6 [23.8, 29.1] |
Previous history of anemia | 4 (8) | 1 (3) | 3 (19) |
Previous use of iron supplements | 11 (21) | 6 (16) | 5 (31) |
Anemia status | |||
Prevalence of anemia | 0 (0) | 0 (0) | 0 (0) |
Erythrocyte count (× 104/μL) ‡ | 496 [469, 554] | 505 [487, 541] | 444 [425, 473] |
Hemoglobin (g/dL) ‡ | 14.8 [14.0, 15.8] | 15.1 [14.7, 16.1] | 13.4 [12.7, 14.9] |
Hematocrit (%)‡ | 45.7 [43.6, 48.0] | 46.8 [44.8, 48.4] | 41.7 [39.9, 44.5] |
MCV (fL) † | 93 [90, 94] | 92 [90, 94] | 94 [92, 96] |
MCH (pg) | 30.1 [29.4, 30.6] | 30.1 [29.4, 30.4] | 30.2 [29.7, 30.8] |
MCHC (g/dL) † | 32.6 [31.9, 33.1] | 32.8 [32.4, 33.3] | 31.9 [31.6, 32.5] |
Iron metabolism | |||
Ferritin (ng/mL) ‡ | 91 [49, 130] | 108 [80, 144] | 43 [25, 58] |
> 100 and ≤ 300 ng/mL | 25 (45) | 24 (62) | 1 (6) |
> 50 and ≤ 100 ng/mL | 16 (29) | 11 (28) | 5 (29) |
> 30 and ≤ 50 ng/mL | 8 (14) | 4 (10) | 4 (24) |
> 15 and ≤ 30 ng/mL | 5 (9) | 0 (0) | 5 (29) |
≤ 15 | 2 (4) | 0 (0) | 2 (12) |
Serum iron (μg/dL) | 90 [65, 142] | 91 [62, 144] | 83 [72, 113] |
TIBC (μg/dL) | 333 [319, 355] | 330 [319, 349] | 347 [326, 386] |
Transferrin saturation (%) | 26.8 [18.8, 40.1] | 27.8 [18.3, 45.5] | 24.6 [20.5, 33.3] |