ABSTRACT
Perceived exertion has been defined as the ability to detect and respond to sensations that arise as a result of physiological adaptations to exercise[1]. This cognitive assimilation of physiological parameters is a form of biofeedback, in which information about central, peripheral and metabolic changes during exercise are generated. Such a feedback system involves complex neuronal and hormonal integration, which eventually make up subjective experience and may facilitate continuation or discontinuation of the activity. Ratings of perceived exertion, most commonly made in children by the 6-20 scale (RPE) proposed by Borg[2], provide an assessment of perceptual recognition of combinations of physiological responses to exercise.
