## 3 Materials and Methods
### Validity and Reliability of the Measurement Tools
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline
**Factors** & **Questions** & \(\beta\) & \(SE\) & \(t\) & **AVE** & **CR** \\ \hline \multirow{4}{*}{Enjoyment} & I enjoy providing services through the TBSS system & 0.844 & - & - & & \\  & I find it interesting to provide services through the TBSS system & 0.956 & 0.052 & 19.699 & 0.773 & 0.911 \\  & I think providing services through the TBSS system is a new challenge & 0.831 & 0.057 & 15.159 & & \\ \hline \multirow{4}{*}{Usefulness} & I think the overall performance of gym operation has improved through the TBSS system & 0.893 & - & - & & \\  & I think it is possible to operate the gym smoothly through the & 0.861 & 0.056 & 16.820 & & \\  & I think the TBSS system is efficient for Taekwondo participants and & 0.872 & 0.053 & 17.280 & & \\ \hline \multirow{4}{*}{Ease of use} & I can easily participate in the operation of the gym using the TBSS system & 0.863 & - & - & & \\  & I was effectively guided on how to use the TBSS system & 0.829 & 0.067 & 15.221 & 0.703 & 0.876 \\  & I think the use of the TBSS system is generally easy & 0.811 & 0.063 & 14.633 & & \\ \hline \multirow{4}{*}{Reliability} & I think the TBSS system accurately provides guidance on the services & 0.896 & - & - & & \\  & & needed to operate the academy & 0.858 & 0.055 & 16.445 & 0.717 & 0.883 \\  & I think the provision of services for the TBSS system is consistent & 0.858 & 0.055 & 16.445 & 0.717 & 0.883 \\  & I think the TBSS system will work without a problem even if an & 0.767 & 0.067 & 13.343 & & \\ \hline \multirow{4}{*}{Model Fit} & \(\chi^{2}\) & \(df\) & \(p\) & \(\chi^{2}\)/df & NFI & TLI & CFI & RMR & RMSEA \\  & I47.156 & 47 & 0.000 & 3.13 & 0.937 & 0.956 & 0.031 & 0.097 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Results of CFA on TBSS characteristics. \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline
**Factors** & **Question** & \(\beta\) & \(SE\) & \(t\) & **AVE** & **CR** \\ \hline \multirow{8}{*}{Perceived value} & I am happy when I provide services through the TBSS system & 0.836 & - & - & & \\  & Using the TBSS system is fun & 0.817 & 0.045 & 22.028 & & \\  & The use of the TBSS system is interesting & 0.771 & 0.054 & 17.912 & & \\  & The cost of using a TBSS system is reasonable & 0.849 & 0.073 & 14.766 & & \\  & Buying services from the TBSS system is a smart way of consumption & 0.861 & 0.063 & 15.115 & 0.742 & 0.963 \\  & TBSS systems offer a variety of values at a low cost & 0.838 & 0.068 & 14.445 & & \\  & TBSS systems effectively improve academy performance & 0.923 & 0.061 & 17.121 & & \\  & TBSS systems contribute to gym performance and achievement & 0.912 & 0.065 & 16.749 & & \\  & TBSS systems have various functions & 0.798 & 0.066 & 13.369 & & \\ \hline \multirow{4}{*}{Intention to use continuously} & I will continue to use the TBSS system & 0.937 & - & - & & \\  & I will increase the frequency of use of the TBSS system & 0.942 & 0.040 & 25.641 & & \\  & I plan to use the TBSS system more & & 0.952 & 0.038 & 26.782 & & \\ \hline \multirow{2}{*}{Model Fit} & \(\chi^{2}\) & \(df\) & \(p\) & \(\chi^{2}\)/df & NFI & TLI & CFI & RMR & RMSEA \\  & I19.558 & 48 & 0.000 & 2.491 & 0.959 & 0.966 & 0.975 & 0.021 & 0.089 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Results of CFA on single-dimensional factor.