The exercise group: pre (0 h), immediately after 3 h of bicycle exercise (3 h), and 1.5 (4.5 h), 3 (6 h), 6 (9 h) and 21 h (24 h) postexercise. The rest group: pre (0 h), after 3, 4.5, 6, and 9 h of rest, and 24 h after the presample. Values are means ± s.e.m. (n = 6 subjects).