## 3 Results  
All linear regression models performed well for both movement constraints (R = 0.960-0.999, R\({}^{2}\) = 0.922-0.999; Root-mean-square error (RMSE) = 0.047-0.242, \(p\) < 0.001). The results of all linear regression models are detailed in Table 4, and each model is illustrated in Figures 2-6. GNSSD (small circle, R = 0.999, R\({}^{2}\) = 0.997, RMSE = 0.047, \(p\) < 0.001; large circle, R = 0.999, R\({}^{2}\) = 0.999, RMSE = 0.027, \(p\) < 0.001) and the accelerometry derived metric MAG (small circle, R = 0.992, R\({}^{2}\) = 0.983, RMSE = 0.112, \(p\) < 0.001; large circle, R = 0.997, R\({}^{2}\) = 0.995, RMSE = 0.064, \(p\) < 0.001) performed best among  
Figure 4: The relationship between log transformed DIST and MAG around the small circle and the large circle. SC = small circle, LC = large circle.  
Figure 3: The relationship between log transformed DIST and IL around the small circle and the large circle. SC = small circle, LC = large circle.  
Figure 5: The relationship between log transformed DIST and SUM around the small circle and the large circle. SC = small circle, LC = large circle.  
Figure 6: The relationship between log transformed DIST and PL around the small circle and the large circle. SC = small circle, LC = large circle.  
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**Participant**} & \multicolumn{6}{c}{**Large Circle**} \\ \cline{2-9}  & **Number of Laps** & **Known Distance/m** & **GNSSD/m** & **Impulse Load** & **MAG** & **SUM** & **Player Load** \\ \hline
1 & 0.5 & 12.57 & 12.3 & 35.95 & 25.49 & 1615.13 & 0.48 \\
2 & 1 & 25.13 & 25.2 & 103.53 & 57.66 & 2789.17 & 1.88 \\
3 & 1.5 & 37.70 & 36.6 & 198.92 & 90.43 & 4607.63 & 2.59 \\
4 & 2 & 50.27 & 45.5 & 274.39 & 117.24 & 5121.1 & 2.86 \\
5 & 2.5 & 62.83 & 61.3 & 297.61 & 126.21 & 6540.61 & 3.2 \\
6 & 3 & 75.40 & 75.2 & 229.65 & 172.02 & 8491.27 & 3.9 \\
7 & 3.5 & 87.96 & 82.1 & 374.6 & 185.52 & 9026.94 & 5.23 \\
8 & 4 & 100.53 & 97.8 & 390.72 & 213.75 & 9869.57 & 4.98 \\
9 & 4.5 & 113.10 & 109.4 & 598.23 & 235.34 & 10,437.65 & 5.88 \\
10 & 5 & 125.66 & 122.9 & 597.66 & 264.97 & 11,826.61 & 5.94 \\
11 & 5.5 & 138.23 & 131.6 & 439.48 & 311.61 & 16,615.76 & 6.93 \\
12 & 6 & 150.80 & 148.8 & 471.66 & 350.42 & 18,919.17 & 8.81 \\
13 & 6.5 & 163.36 & 158.5 & 719.49 & 358.9 & 18,218.36 & 7.93 \\
14 & 7 & 175.93 & 172.4 & 895.41 & 399.65 & 17,302.98 & 9.91 \\
15 & 7.5 & 188.50 & 174 & 1071.26 & 418.64 & 23,473.34 & 10.5 \\
16 & 8 & 201.06 & 192.5 & 999.68 & 437.84 & 22,546.53 & 9.62 \\ \hline \hline \end{tabular}
\end{table}
Table 6: Details for each trial include laps and known distance completed around the large circle course, GNSS measured distance, and all accelerometry derived metrics.  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{**Participant**} & \multicolumn{6}{c}{**Small Circle**} \\ \cline{2-7}  & **Number of Laps** & **Known Distance/m** & **GNSSD/m** & **Impulse Load** & **MAG** & **SUM** & **Player Load** \\ \hline
1 & 60 & 376.99 & 339.6 & 1234.76 & 848.23 & 57,277.7 & 17.36 \\
2 & 58 & 364.43 & 322.7 & 1285.58 & 846.6 & 46,164.84 & 22.06 \\
3 & 56 & 351.86 & 324.4 & 2018.93 & 1006.59 & 59,245