Effect of L-Tryptophan and L-Leucine on Gut Hormone Secretion, Appetite Feelings and Gastric Emptying Rates in Lean and Non-Diabetic Obese Participants: A Randomized, Double-Blind, Parallel-Group Trial.

The maximal plasma concentration (Cmax) in response to 1.56 g L-trp was statistically significant compared to tap water (Cmax: p = 0.0257, Fig 3 ), however, the integrated effect did not reach statistical significance ( Table 1 ).

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