## 3 Results  
### Behavioral Results  
#### 3.1.1 Physical Fitness Measures  
Mean and standard deviation measures of physical fitness for the two groups are presented in Table 1. Results of repeated ANOVA of 2 (group: experimental group and control group) \(\times\) 2 (time measurement: pre-test and post-test) for physical fitness are exhibited in Table 2. The interaction between group and time measurement was significant. The post hoc test showed that the aerobic fitness of the experimental group improved after intervention, but that of the control group did not, except the measure of \"sit-and-reach\", see Table 3. The post hoc test results from the other direction are provided in Supplementary Table S1. (Supplementary Table S1 shows that the experimental group performed worse than the control group in the test of \"10 m shuttle run\" and \"throw a tennis ball\" at  
Figure 2: (**a**) Optode placement in our experiment. (**b**) A photograph of the wearable functional near-infrared spectroscope (fNIRS) and (**c**) Schematic diagrams of the channels corresponding to multiple distances of 30, 35, and 40 mm between the sources and the detector. pre-test, but no difference was found between the two groups in the other tests at pre-test.) Body Mass Index (BMI) in both the experimental and the control group decreased after eight weeks, \(F(1,\,18)=8.37\), \(p<0.01\), \(\eta_{\text{p}}{}^{2}=0.32\), but neither the group difference, \(F(1,\,18)=0.52\), \(p=0.48\), nor the interaction between group and test time was significant, \(F(1,\,18)=0.08\), \(p=0.78\). \begin{table}
\begin{tabular}{c} **Experimental** \\ **Group** \\ \end{tabular} \\ \hline
**10 m shuttle run (s)** & 6.99 (0.54) & 7.63 (0.73) & 7.13 (0.60) & 6.46 (0.33) \\
**Standing broad jump (cm)** & 104.50 (9.62) & 95.00 (11.43) & 107.30 (8.62) & 113.10 (8.14) \\
**Throw a tennis ball (m)** & 6.03 (1.30) & 4.16 (1.66) & 6.30 (1.01) & 7.30 (1.62) \\
**Both legs jump in succession (s)** & 5.34 (0.54) & 5.78 (0.90) & 5.10 (0.41) & 4.65 (0.50) \\
**Balance beam (s)** & 4.81 (1.41) & 5.95 (1.40) & 4.43 (0.98) & 3.96 (0.68) \\
**Sit and reach (cm)** & 8.84 (3.71) & 7.53 (4.07) & 11.00 (3.29) & 11.60 (2.49) \\
**Body Mass Index (BMI, kg/m\({}^{2}\))** & 16.39 (1.74) & 16.60 (2.76) & 15.97 (1.80) & 16.34 (2.86) \\ \hline \end{tabular}
\end{table} 
Table 1: Means and standard deviations for two groups on measures of physical fitness, M (SD). \begin{table}
\begin{tabular}{c c c c c} \hline  & & **Df\({}_{1}\)** & **Df\({}_{2}\)** & **F** & \(\eta_{\text{p}}{}^{2}\) \\ \hline
**10 m shuttle run** &
\begin{tabular}{c} Group \\ Group \(\times\) test time \\ \end{tabular} & 1 & 18 & 13.49 *** & 0.43 \\
**Standing broad jump** &
\begin{tabular}{c} Group \\ Group \(\times\) test time \\ \end{tabular} & 1 & 18 & 22.00 *** & 0.55 \\
**Throw a tennis ball** &
\begin{tabular}{c} Group \\ Group \(\times\) test time \\ \end{tabular} & 1 & 18 & 11.06 ** & 0.38 \\ \hline
**Throw a tennis ball** &
\begin{tabular}{c} Group \\ Group \(\times\) test time \\ \end{tabular} & 1 & 18 & 46.30 *** & 0.72 \\
**Both legs jump in succession** &
\begin{tabular}{c} Group \\ Group \(\times\) test time \\ \end{tabular} & 1 & 18 & 32.80 *** & 0.65 \\ \hline
**Balance beam** &
\begin{tabular}{c} Group \\ Group \(\times\) test time \\ \end{tabular} & 1 & 18 & 45.26 *** & 0.72 \\
**Balance beam** &
\begin{tabular}{c} Group \\ Group \(\times\) test time \\ \end{tabular} & 1 & 18 & 18.91 *** & 0.51 \\ \hline
**Sit and reach** &
\begin{tabular}{c} Group \\ Group \(\times\) test time \\ \end{tabular} & 1 & 18 & 13.98 *** & 0.58 \\
**Sit and reach** &
\begin{tabular}{c} Group \\ Group \(\times\) test time \\ \end{tabular} & 1 & 18 & 6.50 ** & 0.39 \\ \hline  & \multicolumn{2}{c}{} & 1 & 18 & 76.40 *** & 0.81 \\  & \multicolumn{2}{c}{} & 1 & 18 & 7.18 * & 0.29 \\ \hline  & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \multicolumn{2}{c}{} & \\ \end{tabular}
\end{table}