# Quantifying Sub-Elite Youth Football Weekly Training Load and Recovery Variation
## 3 Results
### Inter-Day Analysis  
Table 2 presents the descriptive statistics for mean weekly training load and recovery status for each training day. The inter-day analysis presented significant differences in the TD covered, MRS, AvS, rHSR, HMLD, average sprint distance, DSL and DEC. The RPE, sRPE and IQR score did not present significant differences in the inter-day analysis.  
Post-hoc analysis found a significantly lower TD in MD-1 than MD-2 (\(p\) = 0.009, \(\Delta\) = 643.99 m, \(d\) = 0.26) and MD-3 (\(p\) = 0.000, \(\Delta\) = 1067.98 m, \(d\) = 3.04). MD-2 presented a significantly higher AvS than MD-1 (\(p\) = 0.023, \(\Delta\) = 8.46 m-min-1, \(d\) = 0.63). The MRS was lower in MD-2 than MD-1 (\(p\) = 0.032, \(\Delta\) = 0.68 m-s-1, \(d\) = 0.43) and MD-3 (\(p\) = 0.000,  
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline \multicolumn{1}{c}{**Variables**} & \multicolumn{1}{c}{**MD-3 (\(\mu\) = 41)**} & \multicolumn{1}{c}{**MD-2 (\(\mu\) = 38)**} & \multicolumn{1}{c}{**MD-1 (\(\mu\) = 40)**} & \multicolumn{1}{c}{\(F\)} & \multicolumn{1}{c}{\(p\)} & \multicolumn{1}{c}{\(\mathbf{n}^{2}\)} & \multicolumn{1}{c}{**Post-Hoc**} \\ \hline TD (m) & 5372.00 \(\pm\) 1452.14 & 5795.99 \(\pm\) 1773.31 & 4728.01 \(\pm\) 1618.62 & 9.90 & 0.000 & 0.058 & a,b \\ \hline AvS (m-min-1) & 5311 \(\pm\) 17.90 & 44.64 \(\pm\) 13.71 & 51.82 \(\pm\) 36.42 & 3.80 & 0.023 & 0.007 & a \\ \hline MRS (m s-1) & 7.50 \(\pm\) 2.17 & 6.81 \(\pm\) 1.00 & 7.52 \(\pm\) 2.33 & 3.90 & 0.021 & 0.024 & a,c \\ \hline rHSR (m) & 75.42 \(\pm\) 63.06 & 68.45 \(\pm\) 73.08 & 87.64 \(\pm\) 102.71 & 3.29 & 0.001 & 0.001 & - \\ \hline \multirow{2}{*}{**External load**} & HMLD (m) & 591.17 \(\pm\) 284.94 & 568.24 \(\pm\) 287.70 & 488.79 \(\pm\) 293.58 & 3.52 & 0.008 & 0.002 & - \\ \cline{2-8}  & Average sprint (m) & 39.71 \(\pm\) 49.09 & 40.40 \(\pm\) 51.11 & 58.09 \(\pm\) 76.46 & 3.90 & 0.048 & 0.024 & a \\ \cline{2-8}  & Number of sprits & 3.13 \(\pm\) 2.94 & 2.90 \(\pm\) 3.71 & 3.80 \(\pm\) 4.68 & 1.45 & 0.237 & 0.009 & - \\ \cline{2-8}  & DSL (a.u.) & 267.55 \(\pm\) 144.38 & 252.17 \(\pm\) 127.67 & 219.21 \(\pm\) 120.30 & 3.55 & 0.030 & 0.022 & b \\ \cline{2-8}  & ACC (m s-2) & 48.85 \(\pm\) 22.83 & 43.58 \(\pm\) 20.54 & 43.21 \(\pm\)19.87 & 2.61 & 0.075 & 0.016 & - \\ \cline{2-8}  & DEC (m s-2) & 45.99 \(\pm\) 25.58 & 40.33 \(\pm\) 20.80 & 34.44 \(\pm\) 21.81 & 10.65 & 0.001 & 0.041 & b \\ \hline \multirow{2}{*}{**Internal load**} & RPE (a.u.) & 13.29 \(\pm\) 2.35 & 12.51 \(\pm\) 1.74 & 13.27 \(\pm\) 2.28 & 1.12 & 0.328 & 0.007 & - \\ \cline{2-8}  & sRPE (a.u.) & 1196.05 \(\pm\) 211.17 & 1158.45 \(\pm\) 211.17 & 1194.38 \(\pm\) 205.23 & 1.12 & 0.328 & 0.007 & - \\ \hline
**Recovery** & TQR (a.u.) & 15.99 \(\pm\) 2.26 & 15.82 \(\pm\) 1.76 & 15.81 \(\pm\) 1.95 & 0.10 & 0.907 & 0.002 & - \\ \hline \hline \end{tabular}  
* Significant differences are verified as: (a) MD-1 vs. MD-2; (b) MD-1 vs. MD-3; (c) MD-2 vs. MD-3; Abbreviations: ACC—acceleration; a.u.—arbitrary unit; AvS–average speed; DEC—dedeation; \(F\)—\(F\)—\(F\) statistic; HMLD—high metabolic load; m—meters; MD—match day; min—minutes; MRS–maximum running speed; \(p\)— value; RPE—radiogs of perceived exertion; s—seconds; sRPE—session ratings of perceived exertion; TD—total distance; IQR—total quality recovery; \(n^{2}\)——eta-squared.  
\end{table}
Table 2: Mean training load and recovery status per session according to comparison between age groups.  
Figure 1: Mean training load and recovery status per session according to comparison between age groups.  
\(\Delta\) = 0.71 m\(\cdot\)s\({}^{-1}\), \(d\) = 0.95). MD-3 presented a significantly higher DSL following MD-1 (\(p\) = 0.024, MD = 48.34 a.u., \(d\) = 0.47). No significant differences were found between days for rHSR and HMLD. Figure 2 presents the mean differences (%) between each training day examined for external load, sRPE, RPE and TQR.