Fig. 4

Mean (± 95% confidence interval) (1) total haemoglobin changes (tHb); (2) tissue saturation index (TSI) in flexor digitorum profundus; and (3) skin temperatures during passive recovery (PAS), cold water immersion at 8 °C (CW8) and at 15 °C (CW15) after repeated handgrip exercise to failure. Bold horizontal lines indicate cold water immersion (CWI) time. There were no differences between males and females, their results are summarised together.*CW8 statistically different from PAS at P < 0.05; #CW15 statistically different from the PAS at P < 0.05; ^CW8 statistically different from the CW15 at P < 0.05