Table 4.
Absolute and percent change in blood marker data from seated rest to immediately post-treadmill graded exercise test.
| Absolute Values | Percent Change (%) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||||||
| Seated Rest | Post No Mask | Post Surgical Mask | Post FFP/N95 Mask | No Mask | Surgical Mask | FFP/N95 Mask | p Within Percent Change | ||||||
| PLT (*10 3 /μl ) | 222.1 ± 43.5 | 278.5 ± 48.2 | 291.9 ± 55.9 | 297.6 ± 50.2 | 27.4 ± 21.4 | 32.9 ± 20.9 | 36.4 ± 24.6 | 0.004 | |||||
| WBC (*10 3 /μl ) | 6.1 ± 0.8 | 9.6 ± 1.7 | 9.8 ± 2.1 | 10.0 ± 2.2 | 57.9 ± 30.6 | 60.3 ± 33.7 | 65.2 ± 36.0 | 0.46 | |||||
| RBC (*10 6 /μl ) | 5.5 ± 0.5 | 5.8 ± 0.5 | 5.7 ± 0.5 | 5.7 ± 0.5 | 5.1 ± 2.9 | 3.2 ± 4.0 | 4.2 ± 3.7 | 0.106 | |||||
| HGB (g/dl) | 15.5 ± 1.0 | 16.5 ± 1.0 | 16.5 ± 0.9 | 16.7 ± 1.0 | 6.3 ± 3.8 | 6.1 ± 3.2 | 7.5 ± 3.1 | 0.275 | |||||
| HCT (%) | 46.2 ± 2.0 | 49.5 ± 1.9 | 47.4 ± 2.0 | 47.8 ± 2.4 | 7.2 ± 3.3 | 2.6 ± 3.5 | 3.5 ± 3.9 | < 0.001 | |||||
| TIBC (mcg/dl) | 313.1 ± 61.9 | 290.4 ± 75.4 | 317.2 ± 51.1 | 312.4 ± 50.1 | −7.3 ± 11.8 | 2.3 ± 9.3 | 0.8 ± 11.1 | 0.003 | |||||
| FE (mcg/dl) | 124.8 ± 42.4 | 135.2 ± 31.8 | 135.1 ± 54.0 | 100.1 ± 28.0 | 16.1 ± 30.4 | 12.9 ± 46.8 | −13.5 ± 31.1 | 0.001 | |||||
| MCV (fl) | 84.0 ± 6.2 | 85.3 ± 6.4 | 84.1 ± 6.3 | 83.9 ± 6.3 | 1.6 ± 1.1 | 0.07 ± 1.3 | −0.1 ± 1.5 | < 0.001 | |||||
| MCH (pg) | 28.3 ± 2.7 | 28.4 ± 2.7 | 29.2 ± 2.7 | 29.2 ± 2.7 | 0.5 ± 2.5 | 3.4 ± 1.8 | 3.1 ± 2.7 | < 0.001 | |||||
| MCHC (g/dl) | 33.6 ± 1.4 | 33.2 ± 1.2 | 34.8 ± 1.2 | 34.8 ± 1.2 | −1.2 ± 2.3 | 3.5 ± 2.3 | 3.7 ± 3.3 | < 0.001 | |||||
| CRP (mg/l) | 0.42 ± 0.55 | 0.16 ± 0.26 | 0.88 ± 1.73 | 0.57 ± 1.05 | 52.1 ± 262.3 | 284.3 ± 519.7 | 124.7 ± 214.1 | 0.12 | |||||
| Cortisol (μg/dl) | 6.3 ± 2.6 | 15.4 ± 4.1 | 13.1 ± 3.1 | 19.7 ± 8.8 | 187.0 ± 144.5 | 144.9 ± 114.8 | 256.2 ± 182.0 | 0.001 | |||||
Note: Data are reported as mean ± standard deviation. Percent change reflect change from seated rest to immediately post-graded exercise test for the respective no mask/masked trials. PLT=platelets. WBC=white blood cells. RBC=red blood cells. HGB=hemoglobin. HCT=hematocrit. TIBC=total iron binding capacity. FE=iron. MCV=mean corpuscular volume. MCH=mean corpuscular hemoglobin. MCHC=mean corpuscular hemoglobin. CRP=C-reactive protein.