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Table 1 Plasma amino acid concentration on Day 8

From: Oral L-citrulline supplementation enhances cycling time trial performance in healthy trained men: Double-blind randomized placebo-controlled 2-way crossover study

 

before TT and before intake

after TT and after intake

 

Placebo

L-Citrulline

Placebo

L-Citrulline

L-Citrulline (nmol/ml)

39.3 ± 1.4

54.3 ± 11.0

40.0 ± 1.4

475 ± 37**

L-Arginine (nmol/ml)

110 ± 4

139 ± 7**

110 ± 4

192 ± 9**

BCAA (nmol/ml) (valine, isoleucine, leucine)

565 ± 15

553 ± 21*

518 ± 20

501 ± 15*

  1. Values are means ± S.E.M. n = 22, * p < 0.05, ** p < 0.001, indicating a significant difference from placebo