Table 1.
Baseline profiles of the non-anemic athletes were recruited at either clinical site to evaluate the effect of low-dose iron supplementation during four weeks of the training exercise.
| Characteristics | Site-1; Male |
||||||
|---|---|---|---|---|---|---|---|
| All Subjects (N = 51) |
Placebo (N = 25) |
Fe-treatment (N = 26) |
P- Value‡ |
||||
| Mean ± sem | 95% CI | Mean ± sem | 95% CI | Mean ± sem | 95% CI | (Between groups) | |
| Age (Years) | 28.2 ± 0.8 | 26.7–29.7 | 28.3 ± 1.1 | 26.2–30.4 | 28.2 ± 1.1 | 26.0–30.3 | 0.94 |
| Height (Cm) | 173.7 ± 0.9 | 172.0–175.4 | 173.6 ± 1.2 | 171.2–176.0 | 173.8 ± 1.2 | 171.5–176.2 | 0.91 |
| Body weight (Kg) | 68.6 ± 1.03 | 66.5–70.6 | 68.8 ± 1.27 | 66.3–71.2 | 68.4 ± 1.62 | 65.2–71.5 | 0.85 |
| BMI (Kg/m2) | 22.7 ± 0.25 | 22.2–23.2 | 22.8 ± 0.31 | 22.2–23.4 | 22.6 ± 0.39 | 21.8–23.3 | 0.65 |
| Hemoglobin (g/dL) | 14.51 ± 0.19 | 14.14–14.88 | 14.61 ± 0.26 | 14.11–15.11 | 14.42 ± 0.29 | 13.85–14.99 | 0.63 |
| Amylase (U/L) |
15.65 ± 1.80 |
12.12–19.18 |
13.04 ± 1.85 |
9.42–16.66 |
18.15 ± 3.00 |
12.26–24.05 |
0.16 |
| Characteristics |
Site-2; Female | ||||||
| All Subjects (N = 42) | Placebo (N = 21) | Fe-treatment (N = 21) | P- Value | ||||
| Mean ± sem |
95% CI |
Mean ± sem |
95% CI |
Mean ± sem |
95% CI |
(Between groups) |
|
| Age (Years) | 41.8 ± 1.5 | 38.9–44.8 | 41.4 ± 2.0 | 37.6–45.3 | 42.2 ± 2.2 | 37.9–46.6 | 0.76 |
| Height (Cm) | 159.3 ± 0.88 | 157.6–161.0 | 159.0 ± 1.2 | 156.7–161.3 | 159.6 ± 1.3 | 157.1–162.2 | 0.77 |
| Body Weight (Kg) | 55.6 ± 1.5 | 52.6–58.6 | 55.1 ± 2.0 | 51.1–59.1 | 56.1 ± 2.3 | 51.7–60.6 | 0.80 |
| BMI (Kg/m2) | 21.86 ± 0.48 | 20.92–22.80 | 21.75 ± 0.63 | 20.52–22.98 | 21.96 ± 0.72 | 20.54–23.38 | 0.84 |
| Body Temp. (°C) | 36.3 ± 0.1 | 36.2–36.5 | 36.2 ± 0.1 | 36.0–36.5 | 36.4 ± 0.1 | 36.2–36.6 | 0.27 |
| Hemoglobin (g/dL) | 12.59 ± 0.18 | 12.24–12.93 | 12.75 ± 0.24 | 12.28–13.23 | 12.42 ± 0.25 | 11.93–12.91 | 0.19 |
| Cortisol# (nM) | 2.64 ± 0.37 | 1.91–3.37 | 3.00 ± 0.69 | 1.65–4.35 | 2.28 ± 0.28 | 1.73–2.82 | 0.38 |
| s-IgA# (ng/mL) | 161.9 ± 16.3 | 129.9–193.8 | 179.9 ± 30.6 | 119.9–239.8 | 143.8 ± 11.1 | 122.1–165.6 | 0.23 |
| Fatigue Condition | 0.46 ± 0.04 | 0.38–0.54 | 0.49 ± 0.06 | 0.37–0.61 | 0.44 ± 0.06 | 0.34–0.54 | 0.41 |
| Pulse Rate (bpm) | 70 ± 2 | 67–73 | 69 ± 2 | 65–73 | 70 ± 2 | 65–74 | 0.95 |
#: N = 40 (P = 20, Fe = 20); bpm = beats per minute; N = Number of subjects; sem = Standard error of mean; CI = Confidential interval; Significant P ≤ 0.05; ‡ Mann-Whitney rank test.