Day 1 | Day 2 | Day 3 | Day 4 | |||||
---|---|---|---|---|---|---|---|---|
Before | After | Before | After | Before | After | Before | After | |
Values are mean ( SD). Differences for resting values of BV, PV and RCV from the initial values (day 1) are calculated for every day (column “before”); exercise related changes are calculated for every day from the respective pre-exercise data (column “after”). | ||||||||
*Significant difference from day 1 (same sampling time); †significant difference from same day pre-exercise value. | ||||||||
sTfr, soluble transferrin receptor; PCV, packed cell volume; BV, blood volume; PV, plasma volume; RCV, red cell volume. | ||||||||
Men (n=7) | ||||||||
sTfr (mg/l) | 1.39 (0.1) | 1.39 (0.2) | 1.31 (0.2) | 1.37 (0.2)† | 1.32 (0.2) | 1.36 (0.2) | 1.3 (0.1) | 1.4 (0.2) |
Ferritin (ng/ml) | 83 (40) | 87 (39) | 67 (30) | 75 (34) | 77 (36) | 87 (38)† | 87 (38) | 94 (44) |
Transferrin (mg/dl) | 219 (32) | 232 (43) | 206 (38) | 219 (46) | 207 (44) | 233 (35)† | 211 (37) | 212 (33) |
Iron (μg/dl) | 104 (31) | 110 (22) | 132 (51) | 108 (49)† | 136 (48) | 101 (49)† | 131 (43)* | 150 (57) |
Protein (g/dl) | 7.9 (0.3) | 8.2 (0.4)† | 7.3 (0.7) | 7.5 (0.8) | 7.3 (1) | 8.2 (0.6)† | 7.6 (0.6) | 8 (0.6)† |
Haemoglobin (g/dl) | 14.2 (0.5) | 14.8 (0.6)† | 14.1 (0.9) | 14.4 (0.8) | 13.5 (0.7)* | 14.9 (0.5)† | 13.4 (0.8)* | 14 (0.7)† |
PCV (%) | 43.7 (2.2) | 45.2 (2.6)† | 43.1 (3.2) | 44.3 (2.8) | 41.8 (2.1)* | 45.4 (1.9)† | 41.4 (2.0)* | 43.2 (1.8)† |
BV (% change) | −4.0 (1.2)† | 0.7 (0.3) | −2.1 (0.8) | 5.2 (1.9)* | −9.4 (3.2)† | 6 (1.3)* | −4.2 (1.0)† | |
PV (% change) | −6.6 (2.1)† | 1.8 (0.5) | −4.2 (1.2) | 8.7 (3.1)* | −15.0 (5.3)† | 10.3 (3.1)* | −7.2 (1.9)† | |
RCV (% change) | −0.8 (0.1) | −0.6 (0.1) | 0.6 (0.1) | 0.6 (0.1) | −1.6 (0.4) | 0.4 (0.2) | −0.1 (0.0) | |
Women (n=6) | ||||||||
sTfr (mg/l) | 1.52 (0.3) | 1.47 (0.2) | 1.5 (0.3) | 1.6 (0.4) | 1.6 (0.3) | 1.6 (0.3) | ||
Ferritin (ng/ml) | 50 (27) | 50 (7) | 50 (29) | 52 (29) | 45 (26) | 47 (28) | ||
Transferrin (mg/dl) | 271 (36) | 282 (40) | 262 (36) | 288 (33) | 276 (20) | 296 (24) | ||
Iron (μg/dl) | 129 (25) | 84 (31) | 115 (43) | 128 (16) | 106 (26) | 120 (27) | ||
Protein (g/dl) | 7.9 (0.3) | 8.1 (0.7) | 7.9 (0.6) | 8.5 (0.4)† | 8 (0.4) | 8.4 (0.6)† | ||
Haemoglobin (g/dl) | 13.7 (0.6) | 14.1 (0.8) | 13.4 (0.9) | 14.5 (0.7)† | 12.8 (0.6)* | 13.4 (0.8)† | ||
PCV (%) | 42.1 (2.7) | 43.2 (2.4) | 40.9 (2.9) | 44.1 (2.1)† | 38.1 (2.6)* | 40.8 (2.9)† | ||
BV (% change) | −2.8 (1.2) | 2.2 (0.6) | −7.6 (2.1)† | 7 (2.9)* | −4.8 (1.6)† | |||
PV (% change) | −4.7 (1.8) | 4.4 (1.5) | −12.6 (3.2)† | 14.4 (5.2)* | −8.6 (2.9)† | |||
RCV (% change) | −0.3 (0.1) | −0.6 (0.1) | −0.4 (0.1) | −3 (1.3) | 2.2 (0.1) |