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” nv = 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&BCOD = time of COD from forward movement to backward movement (10-m distance) in the 30CODS²; B&FCOD = time of COD from backward movement to forward movement (10-m distance) in the 30CODS²; r = Pearson correlation coefficient; R2 = coefficient of determination; p = significance level; 95% CI = confidence interval.