## 3 Results  
### Repetition  
The repetition results for the six rest intervals condition and the seven sets condition are detailed below. As shown in Tables 2 and 3 and in Figures 3 and 4, the exercise performance level (the number of repetitions) in the rest interval condition showed a significant difference (\(p\) < 0.000) with a high effect size (ES \(\geq\) 0.70). The number of reps over the set progression was also statistically significant (\(p\) < 0.000), with a very high effect size (ES \(\geq\) 0.64). The interaction effect between the rest interval condition and sets was also statistically significant (\(p\) < 0.000), with a very high effect size (ES \(\geq\) 0.60). Post-comparisons showed that the number of reps according to rest interval conditions significantly decreased in the 30-s and 1-, 2-, and 3-min rest interval conditions, and similarly decreased in the 4-min and 5-min rest interval conditions. Furthermore, as the sets progressed, the number of reps decreased significantly to two sets in the 30-s rest interval condition, five sets in the 1-min rest interval condition, three to five sets in the 2-min rest interval condition, and three sets in the 4- and 5-min rest interval conditions. Post-comparisons according to interaction effect showed that the number of reps decreased significantly by five sets in the 30-s and 1-min rest interval conditions, by three to five sets in the 2-min conditions, and by three sets in the 4- and 5-min conditions. Furthermore, after a significant decrease in the number of reps according to the rest interval condition, there was a tendency to maintain the same level of exercise performance (number of reps). \begin{table}
\begin{tabular}{c c c c c c c c c c c c} \hline \hline
**Rest** & **1** & **2** & **3** & **4** & **5** & **6** & **7** & & & **ES** & \(p\) & **Contrast** \\
**Interval** & **1 Set** & **2 Set** & **3 Set** & **4 Set** & **5 Set** & **6 Set** & **7 Set** & & & & \\ \hline
**a** & 20.0 & 7.0 & 4.6 & 3.8 & 3.2 & 3.1 & 3.1 & Rest & & & & \\
30 s & \(\pm\) 1.5 & \(\pm\) 2.5 & \(\pm\) 1.4 & \(\pm\) 1.7 & \(\pm\)1.4 & \(\pm\) 1.2 & \(\pm\) 1.5 & Interval & 0.70 0.000 *** & **a** & **c** & **b** & **c** & **c** & **b** & **c** & **b** \\
**b** & 20.2 & 9.8 & 6.8 & 5.3 & 4.5 & 4.3 & 4.3 & & & & & \\
1 min & \(\pm\) 1.3 & \(\pm\) 2.0 & \(\pm\) 1.6 & \(\pm\) 1.5 & \(\pm\) 1.1 & \(\pm\) 1.3 & \(\pm\) 1.0 & & & & & \\
**c** & 20.5 & 13.2 & 9.8 & 8.8 & 8.0 & 7.4 & 7.3 & & & & & \\
2 min & \(\pm\) 1.0 & \(\pm\) 2.4 & \(\pm\) 2.8 & \(\pm\) 2.4 & \(\pm\) 1.8 & \(\pm\) 2.3 & \(\pm\) 2.0 & Sets & 0.64 0.000 *** & **1** & **2** & **2** & **3** & **4** \\
**d** & 20.4 & 14.9 & 11.5 & 10.1 & 8.3 & 8.4 & 7.5 & & & & & \\
3 min & \(\pm\) 1.5 & \(\pm\) 2.9 & \(\pm\) 3.0 & \(\pm\) 3.1 & \(\pm\) 1.4 & \(\pm\) 2.6 & \(\pm\) 2.8 & & & & \\
**e** & 20.4 & 17.0 & 14.1 & 12.1 & 11.8 & 11.0 & 10.1 & & & & & \\
4 min & \(\pm\) 1.4 & \(\pm\) 3.3 & \(\pm\) 3.0 & \(\pm\) 3.6 & \(\pm\) 3.2 & \(\pm\) 3.4 & \(\pm\) 3.2 & (RI) \(\times\) (S) & 0.60 0.000 *** & **b** & **c** & **b** & **c** & **b** \\
**f** & 20.6 & 18.3 & 15.8 & 13.8 & 12.9 & 12.0 & 10.8 & & & & & \\
5 min & \(\pm\) 1.4 & \(\pm\) 2.0 & \(\pm\) 3.8 & \(\pm\) 3.8 & \(\pm\) 3.1 & \(\pm\) 3.0 & \(\pm\) 3.2 & & & & & \\ \hline \hline \end{tabular} (M \(\pm\) SD), *** \(p\) < 0.001. ES: effect size range; f: small \(\geq\) 0.1, medium \(\geq\) 0.25, large \(\geq\) 0.4.  
\end{table} 
Table 2: Post-comparison results of repetitions, according to the rest interval conditions (in reps). Figure 4: Results of repetitions, shown according to rest interval conditions (reps %). Figure 3: Post-comparison results of repetitions, shown according to rest interval conditions (reps).