Skip to main content

Table 4 Effect of repeated blood donations on hematological parameters

From: Effect of Repeated Whole Blood Donations on Aerobic Capacity and Hemoglobin Mass in Moderately Trained Male Subjects: A Randomized Controlled Trial

   Test series 1 Test series 2 Test series 3
   -1w 2d 1w 2w 4w -1w 2d 1w 2w 4w -1w 2d 1w 2w 4w
Hematocrit P 46.6 ± 1.2 46.4 ± 0.6 46.1 ± 1.0 46.4 ± 1.3 46.1 ± 1.1 44.5 ± 1.5 45.3 ± 1.5 44.7 ± 1.4 46.2 ± 1.5 46.3 ± 1.5 43.5 ± 1.6 45.9 ± 1.2 46.0 ± 1.2 45.9 ± 0.9 45.3 ± 1.5
(%) D 45.8 ± 0.6 40.9 ± 0.9*** 41.9 ± 0.6*** 42.4 ± 0.5*** 43.9 ± 0.5** 44.5 ± 0.5### 42.2 ± 0.6*** 41.0 ± 0.5*** 43.0 ± 0.4** 43.2 ± 0.5** 43.8 ± 0.5### 41.7 ± 0.7*** 41.9 ± 0.6*** 42.1 ± 0.7*** 43.4 ± 0.5
Hemoglobin P 15.9 ± 0.6 15.7 ± 0.3 15.5 ± 0.5 15.4 ± 0.6 15.3 ± 0.5 15.0 ± 0.7 15.0 ± 0.7 14.9 ± 0.7 15.4 ± 0.7 15.3 ± 0.7 14.7 ± 0.8 15.2 ± 0.6 15.2 ± 0.6 15.2 ± 0.5 15.3 ± 0.8
(g/dl) D 15.6 ± 0.2 13.7 ± 0.3*** 14.2 ± 0.2*** 14.2 ± 0.2*** 14.5 ± 0.2*** 14.9 ± 0.2### 14.0 ± 0.3*** 13.7 ± 0.2*** 14.2 ± 0.2*** 14.4 ± 0.2** 14.6 ± 0.2### 13.7 ± 0.3*** 14.1 ± 0.2** 14.1 ± 0.3** 14.5 ± 0.2
Iron P 112 ± 20 101 ± 18 83 ± 17 98 ± 30 99 ± 20 85 ± 8 99 ± 35 78 ± 23 82 ± 11 110 ± 27 84 ± 19 136 ± 31 85 ± 13 133 ± 15 127 ± 36
(μg/dl) D 106 ± 9 90 ± 8 74 ± 8** 66 ± 7*** 96 ± 6 115 ± 20 101 ± 13 66 ± 7** 81 ± 10* 69 ± 6** 97 ± 9# 109 ± 9 76 ± 10 82 ± 11 99 ± 12
Ferritin P 72 ± 12 64 ± 14 56 ± 11 53 ± 11 58 ± 11 64 ± 16 50 ± 11 68 ± 18 64 ± 16 59 ± 11 77 ± 22 71 ± 17 82 ± 15 76 ± 15 69 ± 13
(μg/l) D 55 ± 8 45 ± 7* 43 ± 8* 37 ± 8*** 27 ± 5*** 40 ± 6## 42 ± 7 27 ± 4** 28 ± 3* 23 ± 4** 41 ± 5### 37 ± 5 30 ± 5*** 29 ± 4*** 33 ± 5**
MCH P 29.9 ± 0.6 29.7 ± 0.6 29.4 ± 0.6*** 29.4 ± 0.7** 29.4 ± 0.6** 29.9 ± 0.5### 29.4 ± 0.5 29.8 ± 0.5 29.9 ± 0.5 29.5 ± 0.6 29.8 ± 0.7## 29.6 ± 0.6 29.5 ± 0.5 29.6 ± 0.5 30.0 ± 0.6
(pg) D 30.0 ± 0.3 29.6 ± 0.4** 29.7 ± 0.4** 29.4 ± 0.3*** 29.5 ± 0.4*** 29.4 ± 0.4### 29.3 ± 0.4 29.4 ± 0.4 29.3 ± 0.4 29.1 ± 0.4 29.0 ± 0.4## 28.6 ± 0.4** 29.3 ± 0.4* 29.0 ± 0.5 29.1 ± 0.4
MCHC P 34.1 ± 0.4 33.7 ± 0.4* 33.6 ± 0.5*** 33.2 ± 0.5** 33.1 ± 0.4** 33.6 ± 0.5## 33.1 ± 0.6* 33.3 ± 0.6 33.3 ± 0.5 33.0 ± 0.6* 33.8 ± 0.8### 33.1 ± 0.7 33.0 ± 0.6 33.2 ± 0.6 33.6 ± 0.7
(g/dl) D 34.0 ± 0.2 33.6 ± 0.2** 33.8 ± 0.2* 33.4 ± 0.2*** 33.1 ± 0.3*** 33.6 ± 0.3### 33.2 ± 0.3 33.4 ± 0.2 33.1 ± 0.2* 33.3 ± 0.3 33.4 ± 0.3## 32.7 ± 0.3*** 33.6 ± 0.2 33.3 ± 0.3 33.4 ± 0.3
RDW P 12.9 ± 0.2 12.9 ± 0.2 13.0 ± 0.2 13.2 ± 0.2 13.2 ± 0.2* 13.1 ± 0.3# 13.2 ± 0.4 13.1 ± 0.4 13.2 ± 0.4 13.1 ± 0.3 13.2 ± 0.5## 13.4 ± 0.5 13.4 ± 0.5 13.4 ± 0.5 13.4 ± 0.6
(%) D 12.8 ± 0.1 12.7 ± 0.1 12.8 ± 0.1 12.9 ± 0.1 13.0 ± 0.1* 12.6 ± 0.1 12.7 ± 0.1** 13.0 ± 0.1*** 12.9 ± 0.1 12.8 ± 0.1 13.2 ± 0.1### 13.4 ± 0.2 13.3 ± 0.1 13.4 ± 0.1 13.1 ± 0.1
RBC P 5.3 ± 0.2 5.3 ± 0.1 5.3 ± 0.2 5.3 ± 0.2 5.2 ± 0.2 5.0 ± 0.2 5.1 ± 0.2 5.0 ± 0.2 5.1 ± 0.2 5.2 ± 0.1 5.0 ± 0.2 5.2 ± 0.1 5.2 ± 0.1 5.1 ± 0.1 5.1 ± 0.2
(1012/l) D 5.2 ± 0.1 4.6 ± 0.1*** 4.8 ± 0.1*** 4.8 ± 0.1*** 4.9 ± 0.1** 5.1 ± 0.1### 4.8 ± 0.1*** 4.7 ± 0.1*** 4.9 ± 0.1** 4.9 ± 0.1* 5.1 ± 0.1### 4.8 ± 0.1*** 4.8 ± 0.1*** 4.8 ± 0.1*** 5.0 ± 0.1
  1. Values are means ± SEM (n = 7 in P and n = 13 in D for test series 1; n = 5 in P and n = 13 in D for test series 2 and 3. MCH mean corpuscular hemoglobin, MCHC mean corpuscular hemoglobin concentration, RDW red blood cell distribution width, RBC red blood cell count, P placebo, D donation. # p < 0.05, ## p < 0.01, ### p < 0.001 vs. -1w of test series 1, same group. *p < 0.05, **p < 0.01, ***p < 0.001 vs. -1w of the same test series, same group
\