Figure 1. Effect of ibuprofen on p16INK4a expression in human skeletal muscle after HIIE. Decreased p16INK4a mRNA after HIIE was attenuated by ibuprofen administration (A). A wide individual variation of the exercise response was observed for both placebo (B) and ibuprofen (C) trials. †Denotes significant difference against placebo, p < 0.05; *denotes significant difference against Pre, p < 0.05. Abbreviation: HIIE: high intensity interval exercise.