# Defining the Influence of Fatigue Protocol on Kinematic Parameters of Ippon Seoi Nage
## 4 Discussion  
This research aimed to determine the influence of the fatigue protocol on the performance of ISN throws. The main findings of the presented research comprise the changes in kinematic parameters under fatigue conditions. As these conditions are similar to specific situations in judo combat, the stated results highlight the importance of understanding how fatigue conditions affect the performance of an ISN throw. Ippon sei nege is a throw that requires a significant level of connection, speed, timeliness, and technical excellence from the tori, in order to effectively apply it in situational conditions. Compared to other throws (osoto gari, harai goshi), in ISN performance, the influence of the tori's force on the uke is reduced, and more of the tori's own abilities, such as speed and explosive power, are applied in order to take the ideal position for throwing the uke [9]. Consequently, there are several studies on the kinematics of ippon seoi nage throwing. The goal of this research was to determine how fatigue protocol affects the observed performance parameters of ippon seoi nage throwing in all phases. By comparing HR values (188.17 b/min) with the results of a judo fight (174-185 b/min) [32], it can be concluded that the fatigue protocol made it possible to simulate conditions, i.e., fatigue manifested during a fight. The kinematic parameter data show that there is a statistically significant difference in all observed variables when performing the ISN throw before and after the fatigue protocol. Therefore, it can be concluded that the observed kinematic \begin{table}
\begin{tabular}{c c c} \hline \hline
**Dependent Variable** & **F** & \(\mathbf{p}\) \\ \hline
**L\_shou\_A** & 18.73 & 0.00 * \\ \hline
**R\_shou\_A** & 9.23 & 0.00 * \\ \hline
**PeI\_tsu\_H** & 18.54 & 0.00 * \\ \hline
**PeI\_kake\_H** & 10.76 & 0.00 * \\ \hline
**Hand\_V** & 30.85 & 0.00 * \\ \hline
**Head\_pos** & 4.52 & 0.03 * \\ \hline \hline \end{tabular} Legend: **L\_shou\_A—**the angle of the left shoulder; **R\_shou\_A—**the angle of the right shoulder; **PeI\_tsu\_H —**difference in the height of the pelvis in the skuluri phase; **PeI\_kake\_H—**difference in the height of the pelvis in the kake phase; **Hand\_V—**hand velocity; **Head\_pos—**head position. * Values are significant when \(p<0.05\).  
\end{table} 
Table 4: Results of ANOVA for repeated measurements for a single variable. \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline  & **Protocol** & **N** & **Mean** & **Minimum** & **Maximum** & **St. Dev.** \\ \hline
**PeI\_tsu\_H** & Pre & 90 & 14.80 & 6.12 & 29.50 & 4.62 \\  & Post & 90 & 11.93 & 1.46 & 21.49 & 4.34 \\ \hline
**PeI\_kake\_H** & Pre & 90 & 12.60 & \(-\)3.24 & 26.74 & 6.02 \\  & Post & 90 & 9.84 & \(-\)2.58 & 22.72 & 5.21 \\ \hline
**Hand\_V** & Pre & 90 & 3.37 & 1.91 & 5.47 & 0.88 \\  & Post & 90 & 2.45 & 0.55 & 5.82 & 1.30 \\ \hline
**Head\_pos** & Pre & 90 & 65.02 & 25.79 & 84.44 & 10.94 \\  & Post & 90 & 68.87 & 39.10 & 104.07 & 13.25 \\ \hline \hline \end{tabular} Legend: **L\_shou\_A—**the angle of the left shoulder; **R\_shou\_A—**the angle of the right shoulder; **PeI\_tsu\_H —**difference in the height of the pelvis in the skuluri phase; **PeI\_kake\_H—**difference in the height of the pelvis in the skuke phase; **Hand\_V—**hand velocity; **Head\_pos—**head position.  
\end{table} 
Table 2: _Cont._ \begin{table}
\begin{tabular}{c c c c c} \hline \hline  & **Test** & **Value** & **F** & \(\mathbf{p}\) & \(\mathbf{\eta^{2}}\) \\ \hline
**Group** & Wilks & 0.77 & 8.47 & 0.00 * & 0.23 \\ \hline Legend: Value—Wilks’ Lambda value; F—F value distribution; p—significance level; \(\eta^{2}\)—partial eta squared (measure of effect size). * Values are significant when \(p<0.05\). & & \\ \hline \hline \end{tabular} Legend: Value—Wilks’ Lambda value; F—F value distribution; p—significance level; \(\eta^{2}\)—partial eta squared (measure of effect size). * Values are significant when \(p<0.05\).  
\end{table}