Figure 1. Values are mean with 90% confidence intervals. High-intensity running performance (vYo-YoIR1, A) and distance covered above 14.4 km.h^-1 (D>14.4 km·h^-1, B) and above 80% of vYo-YoIR1 (D>80% vYo-YoIR1, C) during matches at sea-level (SL) and at altitude (Day-1, Day-6 and Day-13) in the Australian (AUS) and Bolivian (BOL) players. See methods for the exact timing of the different performance measures. The magnitude of between-team difference on each testing/match day is shown by the number of ‘*’ symbols, with 1 and 2 symbols referring to clear moderate and large differences. Note that vYo-YoIR1 values at ALT2 have been interpolated (see methods).