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Table 3 Blood levels of glucose and lactate at pre-exercise and during CLT and TT in the YMD-CHO, YMD-F, and Control-CHO interventions

From: The Impact of Pre-Exercise Carbohydrate Meal on the Effects of Yerba Mate Drink on Metabolism, Performance, and Antioxidant Status in Trained Male Cyclists

Variables

Rest

CLT

TT

10 min

20 min

30 min

40 min

Average

5 min

10 min

15 min

20 min

Average

Glucose (g/dL)

YMD-CHO

0.97 ± 0.12#

0.59 ± 0.09a

0.60 ± 0.10a,*,#

0.66 ± 0.12

0.74 ± 0.12

0.65 ± 0.10

0.74 ± 0.13

0.82 ± 0.23

0.84 ± 0.28

0.96 ± 0.38

0.84 ± 0.35

YMD-F

0.65 ± 0.11*

0.70 ± 0.07

0.73 ± 0.09*

0.72 ± 0.12

0.76 ± 0.09a

0.73 ± 0.09

0.75 ± 0.10

0.85 ± 0.11

0.90 ± 0.20

1.02 ± 0.24c

0.88 ± 0.15

Control-CHO

1.00 ± 0.22

0.62 ± 0.13a

0.57 ± 0.10a

0.67 ± 0.12a

0.81 ± 0.14b

0.67 ± 0.11

0.79 ± 0.16

0.85 ± 0.19

0.87 ± 0.23

0.85 ± 0.26

0.84 ± 0.20

YMD-CHO

1.62 ± 0.59#

1.41 ± 0.72

1.32 ± 0.53

1.28 ± 0.43

1.25 ± 0.36

1.31 ± 0.47

7.57 ± 3.22

9.00 ± 4.25

8.42 ± 3.65

8.94 ± 3.21

8.48 ± 3.44*

YMD-F

1.04 ± 0.30*

1.38 ± 0.58

1.32 ± 0.45

1.25 ± 0.33

1.46 ± 0.63

1.36 ± 0.43

7.44 ± 3.32

8.77 ± 3.37

8.61 ± 3.40

9.27 ± 3.33*

8.52 ± 3.29*

Control-CHO

1.42 ± 0.23

1.48 ± 0.76

1.19 ± 0.47

1.16 ± 0.30

1.35 ± 0.39

1.29 ± 0.46

6.46 ± 3.26

7.71 ± 3.85

7.23 ± 3.35

7.02 ± 3.38

7.10 ± 3.40

  1. Data are presented as mean ± SD. aP < 0.05, compared with resting values; bP < 0.05, compared with the time point 20 min during CLT; cP < 0.05, compared with the time point 5 min during TT; *P < 0.05, compared with control-CHO; #P < 0.05, compared with YMD-F
  2. CLT constant load test, TT time trial, YMD-CHO yerba mate drink and carbohydrate meal, YMD-F yerba mate drink and fasted state, Control-CHO control (water) and carbohydrate meal, [La–] blood lactate concentration