Rating of perceived exertion

In sports and in particular stress tests, the perceived effort assessment (EPR), measured by the Borg scale of the perceived effort scale (EPR scale), is a frequently used quantitative measure of perceived exertion during physical activity. In medicine, this serves to document the patient’s effort during a test, and athletic trainers use the scale to assess the intensity of training and competition. The original scale introduced by Gunnar Borg evaluated the effort on a scale of 6-20. Borg then built a category scale (C) (R), the Borg CR10 scale. This is particularly used in the clinical diagnosis of shortness of breath and dyspnea, chest pain, angina and musculoskeletal pain. The CR-10 is best when there is a dominant sensation from either a specific area of ​​the body, such as muscle pain, quadriceps pain or fatigue, or lung responses. The Borg scale can be compared to other linear scales such as the Likert scale or a visual analogue scale. The sensitivity and reproducibility of the results are overall very similar, although the Borg can surpass the Likert scale in some cases.

The Borg EPR scale is a numerical scale from 6 to 20, where 6 means “no effort at all” and 20 means “maximum effort”. When a measurement is taken, a number is chosen from the following scale by an individual who best describes his level of effort during physical activity.

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