Table 2. Correlation (r, [95%Confidence intervals]) matrix between the delta (post-baseline) values for the physical fitness outcomes and the accumulated training load variables over the 12-week observation period. Acc. sRPE (A.U.) Acc. TRIMP (A.U.) Acc. TD (km) Acc. HSR (km) Acc. VHSR (km) YYIRT delta (m) r = 0.668 [0.447;0.807]; p < 0.001** r = 0.646 [0.416;0.793]; p < 0.001** r = -0.098 [-0.393;0.217]; p = 0.542 r = -0.001 [-0.308;0.307]; p = 0.996 r = -0.048 [-0.350;0.264]; p = 0.768 30-m sprint delta (s) r = -0.100 [-0.395;0.215]; p = 0.533 r = -0.073 [-0.372;0.241]; p = 0.650 r = -0.062 [-0.362;0.251]; p = 0.702 r = -0.078 [-0.375;0.237]; p = 0.629 r = -0.210 [-0.484;0.107]; p = 0.187 RSAmean delta (s) r = 0.060 [-0.253;0.360]; p = 0.709 r = 0.059 [-0.254;0.359]; p = 0.716 r = 0.202 [-0.115;0.478]; p = 0.206 r = -0.352 [-0.592;-0.045]; p = 0.024* r = -0.550 [-0.730;-0.285]; p < 0.001** CMJ delta (cm) r = -0.050 [-0.351;0.263]; p = 0.758 r = -0.057 [-0.358;0.255]; p = 0.721 r = 0.198 [-0.119;0.475]; p = 0.214 r = 0.075 [-0.239;0.374]; p = 0.639 r = -0.091 [-0.387;0.224]; p = 0.572 YYIRT: Yo-Yo Intermittent recovery test level 1; RSA: repeated sprint ability; CMJ: countermovement jump; Acc.: accumulated over the 12 weeks; sRPE: session rating of perceived exertion; TRIMP: training impulse; TD: total distance; HSR: high-speed running; VHSR: very high speed running; Delta represents the absolute values post-baseline. *: significant correlations (p < 0.05); **: significant correlations (p < 0.001).