Table 1. Blood lactate concentration [La
-] and arterial oxygen saturation (S
pO
2) measured in team-sport athletes before, during, and immediately after performing the RSR
444 (4 sets of 4, 4-s sprints) in normoxic (21%) and hypoxic (14%) conditions. Data are means (±SD).
Variable |
Condition |
Baseline |
Pre-test |
Post- sprint 8 |
Post- sprint 16 |
[La-] mmol·L-1 |
Normoxia |
1.0 (.3) |
1.7 (1.4) |
7.1 (2.0) |
8.6 (2.6) |
Hypoxia |
1.0 (.2) |
2.9 (1.6)* |
8.0 (2.2) |
10.2 (2.5) * |
SpO2 (%) |
Normoxia |
- |
97.2 (1.5) |
93.8 (3.6) |
94.5 (2.5) |
Hypoxia |
- |
89.0 (2.0) * |
78.0 (6.3) * |
75.3 (6.3) * |
* Different from normoxia (p < 0.05). Baseline measurements were obtained in normoxic conditions before the warm up. Pre-test measurements were performed in the environmental condition, after the warm up and immediately before the commencement of the RSR
444.