Research
Metabolic adaptation
Increased fatty acid availability does not systematically improve exercise capacity despite substantial muscle glycogen sparing (15-48% compared with control).
Increased fat availability may not enhance performance, even with reduced glycogen use.
StrongRefutesmedium confidence
Despite substantial muscle glycogen sparing (15-48% compared with control), exercise capacity is not systematically improved in the face of increased FA availability.
Why this rating
The findings are based on studies involving both untrained and well-trained subjects.
Source
Effect of increased fat availability on metabolism and exercise capacity
John A. Hawley · Medicine & Science in Sports & Exercise · 2002
otherCited 66×
Read the paper This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →