Fig. 1

Near infrared spectroscopy variable responses during leg extensor exercise. ANOVA revealed no main effect of treatment or interaction with independent variables. Thus, a) minimum oxygenated hemoglobin (Min O₂Hb), b) maximum deoxygenated hemoglobin (Max HHb), c) minimum O₂Hb and HHb difference (Min HbDiff), and d) maximum total hemoglobin (Max tHb) are presented as mean values ± standard deviation for low (30% of 1RM) and high (80% of 1RM) load conditions for each set of leg extensor exercise. Relevant ANOVA p-values regarding set and load variables are presented within each panel. When a significant set*load interaction was found, post-hoc analysis with Bonferroni correction was employed for between intensity differences within each set. *, significantly different from 30% load condition (p < 0.0125)