# Variability in the Load of Professional Basketball Referees during Competition
## 3 Results
Thus, the random factor of the individual response of the referees affects the differences in load demands between quarters. The model is significant in 22 of the 23 variables analyzed. Only for Max Deceleration is it not necessary to control the individual variability in the referees. The ICC is moderate-high, which suggests that the individuality of the referee considerably affects the results obtained. Four variables (Explosive Distance, Accelerations/min, AVG Deceleration; Max Heart Rate) have an ICC > 0.7. \begin{table}
\begin{tabular}{c l r r r r r|r} \hline \hline  & \multicolumn{1}{c}{**Game 1**} & \multicolumn{1}{c}{**Game 2**} & \multicolumn{1}{c}{**Game 3**} & \multicolumn{1}{c}{_Mean_} & \multicolumn{1}{c}{_SD_} & \multicolumn{1}{c}{_CV (\%)_} \\ \hline  & Duration & 1:22:05 & 1:22:22 & 1:30:18 & 1:24:55 & 0:04:40 & 5.49 \\ \hline  & Distance & 4239.83 & 3950.00 & 4209.62 & 4133.15 & 159.33 & 3.86 \\  & Distance/min & 52.35 & 49.40 & 47.38 & 49.71 & 2.50 & 5.02 \\  & Explosive Distance & 450.84 & 429.84 & 422.84 & 434.51 & 14.57 & 3.35 \\  & Explosive Dist/min & 5.64 & 5.44 & 4.88 & 5.32 & 0.39 & 7.38 \\  & Max Speed & 20.71 & 23.12 & 20.31 & 21.38 & 1.52 & 7.11 \\  & AVG Speed & 4.55 & 4.61 & 4.65 & 4.60 & 0.05 & 1.11 \\  & Accelerations & 1521.33 & 1336.33 & 1482.33 & 1446.67 & 97.52 & 6.74 \\  & Decelerations & 1523.00 & 1338.67 & 1497.67 & 1453.11 & 99.92 & 6.88 \\  & Accelerations/min & 18.57 & 16.29 & 16.39 & 17.08 & 1.29 & 7.54 \\  & Decelerations/min & 18.58 & 16.34 & 16.56 & 17.16 & 1.24 & 7.21 \\  & Max Acceleration & 4.88 & 4.75 & 4.15 & 4.59 & 0.39 & 8.49 \\  & Max Deceleration & \(-4.44\) & \(-4.67\) & \(-4.11\) & \(-4.40\) & 0.28 & \(-6.43\) \\  & AVG Acceleration & 0.69 & 0.69 & 0.62 & 0.67 & 0.04 & 5.66 \\  & AVG Deceleration & \(-0.67\) & \(-0.67\) & \(-0.61\) & \(-0.65\) & 0.03 & \(-5.12\) \\ \hline  & Impacts & 6123.67 & 5413.00 & 5992.00 & 5842.89 & 378.07 & 6.47 \\  & Player Load & 44.11 & 41.97 & 48.71 & 44.93 & 3.44 & 7.67 \\  & Player Load/min & 0.55 & 0.55 & 0.55 & 0.55 & 0.00 & 0.56 \\  & Power Metabolic & 11,389.99 & 10,652.28 & 11,156.16 & 11,066.14 & 377.00 & 3.41 \\  & AVG Power Metabolic & 6.76 & 6.86 & 6.92 & 6.85 & 0.08 & 1.15 \\  & Power Metabolic/min & 140.90 & 133.48 & 125.92 & 133.43 & 7.49 & 5.61 \\ \hline  & \multirow{2}{*}{**OILM**} & Max Heart Rate & 160.67 & 159.33 & 154.00 & 158.00 & 3.53 & 2.23 \\  & AVG Heart Rate & 132.58 & 131.00 & 123.75 & 129.11 & 4.71 & 3.65 \\  & AVG HR \% & 66.27 & 73.07 & 73.37 & 70.90 & 4.01 & 5.66 \\ \hline  & Low CV & \multicolumn{3}{c}{SD: _standard deviation; CV: coefficient of variation_} & & & & \\ \multicolumn{3}{c}{Moderate CV} & & & & & & \\ \multicolumn{3}{c}{High CV} & & & & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 7: Results of the variation in the total demands by game. Differences in the kinematic demands of OEL were identified in eleven variables. In the first quarter, Q1, a shorter distance is traveled than in Q2 and Q4. However, when distance is normalized to time, a greater Distance/min is traveled compared with the rest of the quarters (\(p<0.001\)). Q4 demands the least absolute Explosive Distance and Explosive Dis/min, with Q1 being the most demanding. The AVG Speed variable is higher in the first quarter compared with the rest of the quarters (\(p<0.001\)). The load demands in the last quarter were lower compared with Q1 and Q2 in the Acceleration and Deceleration variables (\(p=0.001\)). Furthermore, at the beginning of the game, there are greater demands for Max Acceleration and Max Deceleration than at the end of the game. This fact is also evident with AVG Acceleration and AVG Deceleration (\(p<0.001\)). OEL neuromuscular demands were greater at the beginning of the game. The Player Load/min was higher in Q1 compared with the rest of the quarters. These values are repeated in Power Metabolic, AVG Power Metabolic, and Power Metabolic/min.