Table 1

Subjects characteristics at baseline

NORMHYPStandardised differenceChances for greater/similar/lower values for HYP compared with NORM
N89
Age (year)21.5±1.722.0±2.2+0.2 (−0.6;1.0)53/29/18—Unclear
Height (cm)190.7±5.9189.5±7.1−0.2 (−1.0;0.6)21/31/48—Unclear
Body weight (kg)88.6±7.990.6±9.6+0.2 (−0.6;1.0)50/30/20—Unclear
Yo-YoIR2 (m)705±105711±1090.0 (−0.8;0.9)37/33/30—Unclear
CMJ (cm)50±547±3−0.5 (−1.4;0.4)8/18/74—Unclear
HRex (% HRmax)91±192±2+0.1 (−0.7;0.9)42/33/25—Unclear
Htc (%)42.9±2.443.7±2.8+0.3 (−0.5;1.0)57/27/15—Unclear
Hb (g/dL)15.0±1.015.3±0.7+0.4 (−0.4;1.2)67/22/10—Unclear
Hbmass (g)985±561032±137+0.4 (−0.4;1.2)65/24/11—Unclear
Hbmass (g/kg)11.2±0.511.4±0.7+0.3 (−0.5;1.1)59/27/14—Unclear
PV (mL)4443±6014461±5880.0 (−0.8;0.9)36/33/31—Unclear
PV (mL/kg)50.1±4.349.2±3.2−0.2 (−1.0;0.6)21/30/50—Unclear
RCV (mL)2833±1762947±457+0.3 (−0.5;1.1)57/28/15—Unclear
RCV (mL/kg)32.0±1.632.5±3.1+0.2 (−0.6;1.0)47/31/21—Unclear
BV (mL)7267±7627409±972+0.1 (−0.7;0.9)45/32/24—Unclear
BV (mL/kg)82.0±5.081.7±4.8−0.1 (−0.9;0.8)29/33/38—Unclear
Transferrin2.6±0.32.8±0.30.6 (−0.3;1.4)78/15/6—Unclear
Ferritin114.3±51.4103.1±30.6−0.1 (−1.0;0.7)24/31/45—Unclear
  • Mean values (SD) for the final sample size of players allocated in either the NORM and HYP group during the initial camp.

  • BV, blood volume; CMJ, counter movement jump; Hb, haemoglobin; Hbmass, Hb mass; HRex, heart rate during the submaximal run; Htc, haematocrit; HYP, hypoxic; NORM, normoxic; PV, plasma volume; RCV, red cell volume; Yo-YoIR2, Yo-Yo intermittent recovery level 2.