Table 2.

Blood passport values of players depending on their position and the time spent on the field

Position and time spent on the field (minimum)	In competition				Precompetition
	n	HGB (g/dL)	RET (%)	Off-score	n	HGB (g/dL)	RET (%)	Off-score
Defender	96	14.9	1.24	82.9	194	14.9	1.21	83.9
0–45	45	14.8	1.25	81.1
45–90	3	14.8	0.96	89.7
90–135	48	15.1	1.25	84.2
Forward	78	15.1	1.26	84.0	140	15.1	1.22	85.4
0–45	38	14.8	1.27	80.8
45–90	19	15.6	1.31	88.4
90–135	21	15.1	1.20	85.9
Goalkeeper	43	15.0	1.15	86.2	80	15.2	1.24	86.5
0–45	26	15.0	1.11	87.4
45–90	2	16.1	1.49	87.4
90–135	15	14.9	1.18	84.0
Midfielder	88	15.3	1.25	86.2	199	15.1	1.21	85.8
0–45	42	15.2	1.26	85.6
45–90	15	15.5	1.11	92.6
90–135	31	15.2	1.30	83.9
Unknown					156	15.1	1.20	85.5
Total/mean	305	15.1	1.24	84.6	769	15.1	1.21	85.3

HGB, haemoglobin; RET, reticulocyte percentage.