Figure 2

Representative time course of original near infrared spectroscopy (NIRS) signals during intermittent knee extension in the hypoxia test. Firstly, rest1 was performed for 3 min with normoxia, after which the gas mixture was switched to hypoxia. StO2, tissue oxygen saturation; Total-Hb/Mb, total haemoglobin/myoglobin; Oxy-Hb/Mb, oxy haemoglobin/myoglobin; Deoxy-Hb/Mb, deoxyhaemoglobin/myoglobin.