## 3 Results  
The ANOVA revealed significant between-group differences in power outputs during standing trunk rotations across different loads. As shown in Table 2, the highest values of power were produced by boxers and Thai boxers (445.3 \(\pm\) 43.2 W at 10.5 kg), followed by hockey players (407.0 \(\pm\) 41.5 W at 15.5 kg), karate and tae kwon do competitors (348.1 \(\pm\) 35.4 W at 10.5 kg), canoeists and kayakers (346.9 \(\pm\) 36.1 W at 20 kg), wrestlers (288.7 \(\pm\) 27.9 W at 20 kg), judo competitors (266.4 \(\pm\) 26.3 W at 15.5 kg), tennis players (227.3 \(\pm\) 22.6 W at 10.5 kg) and golfers (169.9 \(\pm\) 19.5 W at 10.5 kg). When comparing maximal values of power at 10.5 kg, fighting sports athletes were better than water sports (\(p\) = 0.035; d = 0.86), combat sports (\(p\) = 0.001; d = 1.53) and ball sports athletes (\(p\) = 0.001; d = 1.48), with no significant differences between combat and ball sports athletes (Figure 1). At 15.5 kg, significantly higher values of power were found in water sports athletes than those of combat sports (\(p\) = 0.027; d = 0.91) and ball sports (\(p\) = 0.009; d = 1.17). However, values did not differ significantly from those achieved by fighting sports athletes. Additionally, at 20 kg, the power was significantly higher in water sports athletes than that of combat sports (\(p\) = 0.013; d = 0.98) and ball sports (\(p\) = 0.006; d = 1.33) athletes, with no significant differences with fighting sports athletes. Angular velocity showed a similar tendency, depending on the weight used (Figure 2). Interestingly, fighting sports athletes produced greater velocity at lower weights than the remaining three groups of athletes, whereas water sports athletes performed bette \begin{table}
\begin{tabular}{l c c c c c} \hline \hline \multicolumn{5}{c}{**Mean Power in the Acceleration Phase of Trunk Rotations at Different Weights (W)**} \\ \hline
**Groups of Athletes** & **1 kg** & **5.5 kg** & **10.5 kg** & **15.5 kg** & **20 kg** \\ \hline Boxers and Thai boxers & \(130.1\pm 17.8\) & \(276.2\pm 30.1\) & \(445.3\pm 43.2\) & \(436.4\pm 41.8\) & \(423.5\pm 44.1\) \\ Canoeists and kayakers & \(75.1\pm 9.2\) & \(201.3\pm 20.9\) & \(332.6\pm 25.6\) & \(345.3\pm 30.4\) & \(346.9\pm 36.1\) \\ Golfers & \(60.4\pm 8.4\) & \(118.6\pm 13.2\) & \(169.9\pm 19.5\) & \(136.2\pm 16.6\) & \(107.3\pm 14.2\) \\ Hockey players & \(120.7\pm 14.5\) & \(236.3\pm 27.6\) & \(393.7\pm 34.7\) & \(407.0\pm 41.5\) & \(404.0\pm 38.1\) \\ Judo competitors & \(71.0\pm 9.0\) & \(160.7\pm 19.3\) & \(254.2\pm 25.2\) & \(266.4\pm 26.3\) & \(252.3\pm 27.0\) \\ Karate and tae kwon do competitors & \(99.0\pm 11.9\) & \(213.5\pm 22.8\) & \(348.1\pm 35.4\) & \(321.3\pm 29.9\) & \(271.5\pm 26.8\) \\ Tennis players & \(95.7\pm 10.1\) & \(173.9\pm 20.0\) & \(227.3\pm 22.6\) & \(213.2\pm 23.7\) & \(183.9\pm 21.9\) \\ Wrestlers & \(68.8\pm 8.9\) & \(158.5\pm 18.9\) & \(271.7\pm 28.5\) & \(286.1\pm 30.3\) & \(288.7\pm 27.9\) \\ \hline \multicolumn{5}{c}{**Mean Power in the Acceleration Phase of Trunk Rotations at Different Weights (W)**} \\ \hline
**Groups of Athletes** & **25 kg** & **30 kg** & **35 kg** & **40 kg** & **45 kg** & **50 kg** \\ \hline Boxers and Thai boxers & \(398.8\pm 35.7\) & \(371.0\pm 33.4\) & \(350.9\pm 34.1\) & \(327.3\pm 29.8\) & \(290.1\pm 26.3\) & \(250.5\pm 25.0\) \\ Canoeists and kayakers & \(312.7\pm 28.0\) & \(248.3\pm 24.7\) & \(201.7\pm 23.4\) & \(155.0\pm 18.1\) & & \\ Golfers & \(94.2\pm 11.1\) & \(85.6\pm 10.5\) & & & & \\ Hockey players & \(365.6\pm 33.2\) & \(340.8\pm 30.9\) & \(332.8\pm 31.9\) & \(310.0\pm 27.7\) & \(270.0\pm 26.9\) & \\ Judo competitors & \(214.4\pm 24.9\) & \(180.0\pm 20.9\) & \(155.0\pm 17.3\) & \(110.0\pm 13.1\) & & \\ Karate and tae kwon do competitors & \(232.3\pm 22.7\) & \(200.3\pm 20.5\) & \(165.0\pm 18.8\) & & & \\ Tennis players & \(149.9\pm 18.4\) & \(138.6\pm 16.3\) & \(109.1\pm 15.0\) & & & \\ Wrestlers & \(263.1\pm 27.4\) & \(227.7\pm 26.6\) & \(190.5\pm 23.5\) & \(140.0\pm 19.9\) & & \\ \hline \hline \end{tabular}
\end{table}