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).