Which supplement works better to improve cycling sprint performance: glutamine or glycine-arginine-alpha-ketoisocaproic acid (gakic)?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Glutamine
Glycine-Arginine-Alpha-Ketoisocaproic Acid (GAKIC)

Effectiveness Rating: Glutamine vs Glycine-Arginine-Alpha-Ketoisocaproic Acid (GAKIC)

The effectiveness rating is a measure of the supplements' ability to improve cycling sprint performance. This rating answers the question of whether or not a supplement does what it claims. The evidence backing up glutamine to improve cycling sprint performance is much better than the evidence backing up glycine-arginine-alpha-ketoisocaproic acid (gakic). Glutamine should provide positive results while glycine-arginine-alpha-ketoisocaproic acid (gakic) will not.

Confidence Rating: Glutamine vs Glycine-Arginine-Alpha-Ketoisocaproic Acid (GAKIC)

Another factor to take into account when comparing supplements is the confidence rating. This rating is a measure of how valid each supplement's effectiveness rating is. Remember, the confidence rating is a measure of how much you can trust the effectiveness rating. This rating is based on how many studies are included in the database on a supplement's claims. Ideally, you want a high effectiveness AND confidence rating.

Both glutamine and glycine-arginine-alpha-ketoisocaproic acid (gakic) have low confidence ratings. This means neither supplement has an adequate amount of research to back up this claim. A low confidence rating questions the validity of the effectiveness rating.