Effect of exercise on metabolism of glycogen and triglycerides in the respiratory muscles.

It was shown that during muscular exertion the diaphragm muscle and the intercostal muscles utilize endogenous glycogen whereas only the diaphragm muscle utilizes endogenous triglycerides. The post-excercise glycogen repletion in the diaphragm muscle was much faster than in the intercostal muscles. In the diaphragm muscle, marked overshoot of the glycogen level occurred early after the exercise.