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. 2021 May 26;59(11):1162–1169. doi: 10.1038/s41393-021-00642-4

Table 4.

Borg’s RPE scale and proposed transformed values of RPE on the CR10.

Borg’s RPE value Transformed value on CR10
AB-CYC AB-HC PARA TETRA
6 0.5 0.5 0 0.5
7 1 0.5 0.5 1
8 1 1 1 1
9 2 2 2 2
10 2 2 2 3
11 3 3 3 3
12 3 3 3 4
13 4 4 4 5
14 5 5 5 5
15 5 6 6 6
16 6 6 7 7
17 7 7 7 8
18 8 8 8 8
19 9 9 9 9
20 10 10 10 10

CR10 Category Ratio 10, RPE rating of perceived exertion.