The post-exercise recovery of triglycerides in rat tissues.

Triglycerides (TG) recovery after exhaustive muscular exertion was investigated in tissues of fed rats and rats fasted for 24 h before exercise. In both groups the exercise caused reduction of TG level in the fast-twitch-oxidative-glycolytic (FOG) muscle, in heart muscle, and in plasma and accumulation of TG in liver. In the fed group the level of TG in FOG muscle, in liver, and in plasma normalized after 1 h of recovery, but only after 3 h in heart muscle. Treatment with glucose somewhat slowed down this process in FOG muscle. In the fasted group, the level of TG in each tissue returned to the pre-exercise value after 3 h of recovery.