Research

Mixed

Sprint interval training does not increase the muscle content of fatty acid transport proteins (FAT/CD36 or FABPpm) in humans, suggesting that lipid oxidation capacity may adapt differently or slower than carbohydrate metabolism.

Don't worry if you don't see immediate changes in your body's fat-burning machinery after starting sprint training. Your body adapts to handle glucose and energy production more efficiently first. Focus on the performance benefits and overall metabolic health improvements, as these are the primary drivers of long-term fitness gains from SIT.

GoodRefutesHIGH confidence
There was no effect of training or detraining on the muscle content of fatty acid translocase (FAT/CD36) or plasma membrane associated fatty acid binding protein (FABPpm) (P > 0.05).
Kirsten A. Burgomaster et al. · American Journal of Physiology-Regulatory, Integrative and Comparative Physiology · 2007

Why this rating

Clear negative finding with statistical significance, though limited by small sample size.

Source

Divergent response of metabolite transport proteins in human skeletal muscle after sprint interval training and detraining

Kirsten A. Burgomaster et al. · American Journal of Physiology-Regulatory, Integrative and Comparative Physiology · 2007

DOI 10.1152/ajpregu.00503.2006

rct · n=16Cited 256×
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DOI resolved against Crossref · corpus check 2026-06-10

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