Table 3. Multiple regression calculations (forward and backward stepwise model) for the 30CODS² test.
| Dependent variable |
nv |
Independent variables |
r |
R2 |
R2 variation |
F value |
p |
| 10-m CODS² |
3 |
10-m Sprint |
0.71 |
50% |
50% |
58.653 |
<0.001 |
| Prediction equation: 10-m CODS² = 0.361+0.864 x “10 m Sprint” |
| 30-m CODS² |
5 |
30-m Sprint |
0.60 |
36% |
36% |
32.561 |
<0.001 |
| Prediction equation: 30-m CODS²= 2.538+1.096 x “30 m Sprint” |
| F&BCOD |
2 |
Body mass |
0.42 |
17% |
17% |
12.239 |
<0.001 |
|
|
Body mass + 30-m sprint |
0.49 |
24% |
7% |
5.288 |
0.025 |
| Prediction equation: F&BCOD = 2.230 +0.23 x “30-m sprint” -0.009 x “Body mass” |
| B&FCOD |
2 |
10 m Sprint |
0.35 |
12% |
12% |
8.091 |
0.006 |
| Prediction equation: B&FCOD = 1.274+0.946 x “10-m Sprint” |
n
v = number of significant variables used in the regression model or interaction between variables; 10-m Sprint = 10-m starting speed time in the 30-m Sprint test (30S); 30-m Sprint = final time in the 30S; 10-m CODS² = 10-m starting speed time in the 30-m Backward and Forward Sprint Test (30CODS²); 30-m CODS² = the final time in the 30CODS²; F&B
COD = time of COD from forward movement to backward movement (10-m distance) in the 30CODS²; B&F
COD = time of COD from backward movement to forward movement (10-m distance) in the 30CODS²; r = Pearson correlation coefficient; R
2 = coefficient of determination; p = significance level; 95% CI = confidence interval.
