Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Schematic representation of the cellular energy handling versus time of exercise. From the top red: free ATP and phosphocreatine/creatine system, blue: anaerobic glycolysis (muscular glycogen), brown: aerobic oxidation (muscular glycogen, plasma glucose, liver glycogen), black: aerobic oxidation (adipose tissue triglycerides, plasma free fatty acids).
