| |
All
|
Caffeine consumers
|
Caffeine non-consumers
|
Uor t
|
P
|
rg or d
|
|---|
|
n = 22
|
n = 10
|
n = 12
|
|---|
|
SJFTR1
|
|
Baseline
|
5.3 (0.7)a
|
5.1 (0.9)a
|
5.5 (0.5)a
|
45.0
|
0.34
|
0.25
|
|
3 mg/kg
|
5.6 (0.6)ab
|
5.7 (0.5)b
|
5.6 (0.7)ab
|
51.5
|
0.60
|
−0.14
|
|
6 mg/kg
|
5.9 (0.6)bc
|
5.7 (0.5)ab
|
6.0 (0.6)b
|
45.0
|
0.34
|
0.25
|
|
9 mg/kg
|
6.0 (0.6)c
|
6.0 (0.5)b
|
6.0 (0.7)b
|
60.0
|
0.97
|
0.00
|
|
Placebo
|
5.6 (0.6)ab
|
5.6 (0.5)ab
|
5.6 (0.7)ab
|
57.0
|
0.87
|
−0.05
|
|
Χ2
|
21.46
|
12.85
|
11.67
| | | |
|
P
|
< 0.001
|
0.01
|
0.02
| | | |
|
Kendall’s W
|
0.24
|
0.32
|
0.24
| | | |
|
SJFTR2
|
|
Baseline
|
10.0 (1.2)B
|
9.9 (1.3)A
|
10.1 (1.1)B
|
0.36
|
0.72
|
0.16
|
|
3 mg/kg
|
10.1 (1.0)B
|
9.9 (1.1)B
|
10.3 (1.0)A
|
0.98
|
0.34
|
0.42
|
|
6 mg/kg
|
10.4 (0.8)B
|
10.2 (0.6)A
|
10.5 (1.0)A
|
49.0
|
0.49
|
0.18
|
|
9 mg/kg
|
10.5 (0.8)A
|
10.7 (0.7)A
|
10.3 (0.9)A
|
41.0
|
0.22
|
−0.32
|
|
Placebo
|
10.3 (0.9)B
|
10.3 (0.8)B
|
10.3 (1.0)B
|
57.0
|
0.87
|
−0.05
|
|
Χ2 or F
|
6.93
|
6.84
|
0.97
| | | |
|
P
|
0.14
|
0.14
|
0.43
| | | |
|
Kendall’s W or \( {\eta}_p^2 \)
|
0.08
|
0.17
|
0.08
| | | |
|
SJFTR3
|
|
Baseline
|
9.2 (1.3)aA
|
9.1 (1.4)A
|
9.3 (1.2)A
|
0.42
|
0.68
|
0.18
|
|
3 mg/kg
|
9.5 (1.0)aA
|
8.9 (0.9)A
|
9.9 (0.9)A
|
26.0
|
0.03
|
0.57
|
|
6 mg/kg
|
9.9 (1.1)bA
|
9.6 (1.0)A
|
10.2 (1.1)A
|
43.5
|
0.22
|
0.28
|
|
9 mg/kg
|
10.2 (1.1)bA
|
9.9 (1.1)A
|
10.4 (1.0)A
|
42.0
|
0.25
|
0.30
|
|
Placebo
|
9.4 (1.1)aA
|
9.5 (1.1)A
|
9.3 (1.2)A
|
55.0
|
0.77
|
−0.08
|
|
Χ2
|
19.58
|
6.79
|
19.93
|
–
|
–
|
–
|
|
P
|
0.006
|
0.15
|
< 0.001
|
–
|
–
|
–
|
|
Kendall’s W
|
0.22
|
0.17
|
0.42
|
–
|
–
|
–
|
|
SJFT Index
|
|
Baseline
|
13.2 (2.2)
|
13.9 (2.3)
|
12.6 (2.0)
|
–
|
–
|
–
|
|
3 mg/kg
|
12.7 (1.8)
|
13.5 (1.9)
|
12.0 (1.4)
|
–
|
–
|
–
|
|
6 mg/kg
|
12.6 (1.4)
|
13.1 (1.2)
|
12.3 (1.4)
|
–
|
–
|
–
|
|
9 mg/kg
|
12.5 (1.3)
|
12.7 (1.3)
|
12.3 (1.3)
|
–
|
–
|
–
|
|
Placebo
|
12.6 (1.7)
|
13.0 (1.4)
|
12.2 (1.9)
|
–
|
–
|
–
|
|
Dosage effect
|
|
F
|
2.38
|
–
|
–
| | | |
|
P
|
0.06
|
–
|
–
| | | |
|
\( {\eta}_p^2 \)
|
0.10
|
–
|
–
| | | |
|
Dosage x caffeine consumption effect
|
|
F
|
1.51
|
–
|
–
| | | |
|
P
|
0.21
|
–
|
–
| | | |
|
\( {\eta}_p^2 \)
|
0.07
|
–
|
–
| | | |
|
Statistical significance between SJFTR2 and SJFTR3 within the same caffeine dosage
|
|
Z or t (Baseline)
|
2.56
|
1.56
|
3.00
|
–
|
–
|
–
|
|
P
|
0.01
|
0.15
|
0.01
|
–
|
–
|
–
|
|
rc or d
|
0.66
|
0.60
|
0.65
|
–
|
–
|
–
|
|
Z or t (3 mg/kg)
|
2.83
|
2.37
|
1.57
|
–
|
–
|
–
|
|
P
|
0.005
|
0.02
|
0.12
|
–
|
–
|
–
|
|
rc or d
|
0.79
|
0.89
|
0.64
|
–
|
–
|
–
|
|
Z or t(6 mg/kg)
|
2.13
|
1.52
|
1.83
|
–
|
–
|
–
|
|
P
|
0.03
|
0.14
|
0.07
|
–
|
–
|
–
|
|
rc or d
|
0.64
|
0.57
|
0.66
|
–
|
–
|
–
|
|
Z or t (9 mg/kg)
|
1.13
|
1.84
|
−0.69
|
–
|
–
|
–
|
|
P
|
0.26
|
0.07
|
0.50
|
–
|
–
|
–
|
|
rc or d
|
0.30
|
0.61
|
−0.18
|
–
|
–
|
–
|
|
Z or t (Placebo)
|
3.29
|
2.03
|
2.67
|
–
|
–
|
–
|
|
P
|
0.001
|
0.04
|
0.008
|
–
|
–
|
–
|
|
rc or d
|
0.80
|
0.72
|
0.89
|
–
|
–
|
–
|
- Values are means (SD). abc – different letter inscriptions refer to statistical differences between caffeine dosages; ABC – different letter inscriptions refer to statistical differences between SJFT rounds (R2 and R3) within the same caffeine dosages. SJFT, Special Judo Fitness Test
