Skip to main content

Table 2 Plasma amino acids concentrations.

From: Brain serotonergic and dopaminergic modulators, perceptual responses and endurance exercise performance following caffeine co-ingested with a high fat meal in trained humans

  

Blood collection time (min)

Variables

Trials

Rest

30 min

90 min

End

Total [Trp] (μmol·l-1)

Control

38 ± 8

36 ± 7

39 ± 3

46 ± 9

 

F

38 ± 7

39 ± 7§

43 ± 6§

42 ± 9

 

FC

38 ± 7

39 ± 7

43 ± 9§

43 ± 7§

[Tyrosine] (μmol·l-1)

Control

54 ± 8

53 ± 7

61 ± 7

71 ± 8

 

F

52 ± 3

58 ± 6§

65 ± 7§

68 ± 5§

 

FC

51 ± 4

55 ± 6§

64 ± 8§

66 ± 7§

[LNAA] (μmol·l-1)

Control

500 ± 50

487 ± 35

486 ± 51

531 ± 60

 

F

522 ± 46

532 ± 50

518 ± 45

518 ± 54

 

FC

505 ± 40

499 ± 48

504 ± 48

506 ± 44

Total [Trp]:[LNAA] ratio

Control

.076 ± .013

.077 ± .012

.081 ± .009

.088 ± .016

 

F

.072 ± .012

.074 ± .013

.083 ± .015§

.083 ± .021

 

FC

.075 ± .012

.080 ± .013

.085 ± .013§

.085 ± .015§

Total [Trp]:[Tyrosine] ratio

Control

0.72 ± .15

0.69 ± .13

.064 ± .08

0.66 ± .11

 

F

0.72 ± .14

0.68 ± .13§

0.67 ± .11

0.63 ± .15§

 

FC

0.74 ± .17

0.72 ± .14

0.67 ± .14

0.65 ± .10§

  1. Values are presented as the mean ± SD
  2. §: Significant difference within the trials compared with the resting values.
Back to article page

Journal of the International Society of Sports Nutrition

ISSN: 1550-2783

Contact us