## 5 Discussion
### Spontaneous Nerve Activity  
Compared with the control group that did not learn the football juggling, the ALFF value of the right cerebellum area 8 of the FJ group that learned the football juggling \begin{table}
\begin{tabular}{c c c} \hline \hline  & **FJ Group** & **Control Group** \\ \hline Age (years) & 18.24 \(\pm\) 0.55 & 18.27 \(\pm\) 0.46 \\ Gender (males/females) & 25/12 & 15/7 \\ BMI & 20.65 \(\pm\) 2.95 & 21.17 \(\pm\) 2.79 \\ Strength (cm) & 1.96 \(\pm\) 0.26 & 2.05 \(\pm\) 0.41 \\ Speed (s) & 7.93 \(\pm\) 0.75 & 7.79 \(\pm\) 0.86 \\ Flexibility (cm) & 13.18 \(\pm\) 7.31 & 13.56 \(\pm\) 7.71 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Baseline characteristics of participants (M \(\pm\) standard deviation (SD)). Figure 2: Brain regions with significantly increased ALFF values after learning football juggling 70 times. Note: the yellow highlight area is the right cerebellum area 8 (rCbe8), (**a**) is the coronal plane, (**b**) is the Sagittal plane, (**c**) is the axial plane. increased. It is suggested that learning football juggling can cause an increase in the level of spontaneous nerve activity in the cerebellum of the college student. Previous studies have shown that motor learning can cause the occurrence of brain plasticity, and the development of motor behavior must be accompanied by the change of internal neural mechanisms [1; 2; 4; 18]. The findings of this study are consistent with previous studies that motor learning leads to an increase in the ALFF value of the cerebellum region [29; 30; 31]. The cerebellum is crucial for both motor control and learning, therefore due to regulation to multi-joint movements during motor control tasks [32]. [PERSON] et al. [33] reported that the cerebellum may be related to the learning process, and studies have shown that cerebellum activity changes significantly before and after motor learning. An action learning task in the experiment, research has been conducted for adults' and children's PET scans and functional magnetic resonance imaging [9; 11; 12; 15], confirming the cerebellum activation in the process of learning, and found that activation of the decrease of the area is highly correlated with reductions of motion error, and activates the changing area is located in the left cerebellar hemisphere, also found on the right side and the former vermis cerebellar hemisphere activation associated with the subjects' ability and speed of finish [1]. In other words, when more mistakes are made during motor learning, more spontaneous neural activity will occur in the brain and the corresponding area of activation will also increase. In the process of learning football juggling, it is inevitable to experience body tension and stiffness, low degree of completion of movements, and many mistakes. Therefore, the corresponding activation area is bound to increase. In another study, participants were given a finger sequence exercise for 41 days, followed by functional magnetic resonance imaging scans before and after learning [34]. The results showed that both sides of the cerebellum were activated. In the case that the exercise frequency was controlled, the activation volume of the training sequence and the control sequence significantly changed during learning, which is believed to be related to the balance and coordination ability of the body [35]. In the process of learning football juggling, coordination and cooperation of multiple limbs are needed, especially the coordination and cooperation between the lower limbs. Untrained individuals generally have poor coordination ability of the lower limbs, and due to learning football juggling in the real environment, the movement of the ball and the changes of the surrounding environment should receive attention in the process of kicking the ball alternately between the lower limbs, which requires dynamic adjustments to maintain the balance of the body.