The relationship between the free fatty acids and IL-6 during morning and evening of acute endurance exercise.

<p>Serum concentrations of free fatty acids (a) before (Pre), immediately after (Post), and 2 h after (Post 2 h) exercise. Data represent the mean ± standard error. *** <i>P</i> < 0.001, compared with values at pre-exercise. ^†<i>P</i> < 0.05, compared with values immediately after exercise. ^#<i>P</i> < 0.05, significant difference between the morning and evening values. The relationship between levels of interleukin-6 immediately post exercise and free fatty acids 2 h post exercise in the evening (r = 0.68, <i>P</i> < 0.01) (b).