Table 2. Effects of six weeks repeated sprint training on jump and repeated sprint-related variables of college soccer players (mean ± SD). |
| Variables |
Groups |
Pre-intervention |
Post-intervention |
Pre-Post
(%) |
Interaction
effect |
Hedges’
g (95%CI) |
SJ
(cm) |
SAND |
40.8 ±
2.41 |
43.7 ±
2.19 a,b
c |
6.9 b,c |
F
= 50.7;
p < 0.01 |
2.02 (1.12,
2.91) Very Large↑ |
| GRASS |
40.4 ±
2.46 |
42.3 ±
2.28 a,b |
4.7 b |
1.36 (0.56,
2.16) Large↑ |
| CON |
40.9 ±
2.74 |
40.6 ±
2.55 |
-0.8 |
-0.22 (-0.94,
0.50) Small↓ |
CMJ
(cm) |
SAND |
44.1 ±
2.46 |
47.7 ±
2.42 a,b |
8.2 b |
F
= 44.1;
p < 0.01 |
2.03 (1.14,
2.93) Very Large↑ |
| GRASS |
44.1 ±
2.48 |
47.0 ±
2.43 a,b |
6.5 b |
1.61 (0.78,
2.44) Large↑ |
| CON |
44.4 ±
2.47 |
43.9 ±
2.63 |
-1.2 |
-0.30 (-1.03,
0.42) Small↓ |
| Best
sprint time (s) |
SAND |
5.0 ±
0.07 |
4.9 ±
0.07 a,b |
-2.1 b |
F
= 40.4;
p < 0.01 |
-1.58 (-2.41,
-0.75) Large↓ |
| GRASS |
5.0 ±
0.09 |
4.9 ±
0.08 a,b |
-2.0 b |
-1.46 (-2.28,
-0.65) Large↓ |
| CON |
5.0 ±
0.06 |
5.0 ±
0.05 |
-0.03 |
-0.02 (-0.74,
0.70) Trivial↓ |
Peak
power
(w) |
SAND |
717.2 ±
23.93 |
762.7 ±
20.94 a,b |
6.4 b |
F
= 35.3;
p < 0.01 |
1.94 (1.06,
2.82) Large↑ |
| GRASS |
718.4 ±
23.87 |
758.0 ±
21.19 a,b |
5.5 b |
1.67 (0.83,
2.52) Large↑ |
| CON |
715.8 ±
23.94 |
713.3 ±
24.29 |
-0.4 |
-0.11 (-0.83,
0.61) Trivial↓ |
Minimum
power
(w) |
SAND |
445.3 ±
19.70 |
533.3 ±
20.63 a,b,c |
19.8 b,c |
F
= 136.9;
p < 0.01 |
1.29 (0.50,
2.09) Large↑ |
| GRASS |
443.6 ±
20.00 |
511.8 ±
21.29 a
b |
15.4 b |
1.00 (0.23,
1.77) Moderate↑ |
| CON |
454.5 ±
19.04 |
446.4 ±
21.97 |
-1.8 |
-0.12 (-0.84,
0.60) Trivial↓ |
Mean
power
(w) |
SAND |
571.2 ±
27.01 |
640.1 ±
21.12 a,b,c |
12.1b |
F
= 58.3;
p < 0.01 |
1.96 (1.07,
2.84) Large↑ |
| GRASS |
563.3 ±
27.02 |
616.5 ±
25.28 a,b |
9.4 b |
1.51 (0.69,
2.33) Large↑ |
| CON |
571.2 ±
25.75 |
562.4 ±
25.68 |
-1.5 |
-0.25 (-0.97,
0.47) Small↓ |
Fatigue
index |
SAND |
8.3 ±
0.32 |
7.3 ±
0.37 a,b,c |
-12.1 b,c |
F
= 29.9;
p < 0.01 |
-1.87 (-2.74,
-1.00) Large↓ |
| GRASS |
8.4 ±
0.42 |
7.8 ±
0.33 a,b |
-7.1 b |
-1.12 (-1.90,
-0.35) Moderate↓ |
| CON |
8.0 ±
0.44 |
8.2 ±
0.45 |
2.5 |
0.37 (-0.35,
1.10) Small↑ |
|
a Significantly different from pre-intervention (p < 0.05); |
b Significantly different from CON (p < 0.05); |
c Significantly different from GRASS (p < 0.05). |
|