Experimental Applications of the use of Perceived Exertion Scales for Aerobic, Strength and Muscular Endurance

Participation in fitness programs, physical activity and exercise is an important element of wellbeing and reduction of disease risk. Choosing the right exercise intensity and prescribing exercise activities in physical education classes and wellness program is essential for the success of the program. Millions of people all over the world use perceived exertion scales during exercise evalZuation and to prescribe exercise intensity. Human perceptual response have been studied by William James of Harvard university and Wilhelm Wundt at the university of Leipzig. Both scientists are considered to be the founders of experimental Psychology (Noble and Robertson 96). In the early1960’s, Borg of Sweden was the first to find the relation between the real physical effort and the subjective sensation of effort (Perceived Exertion). He developed an international recognized practical tool to measure perceptual effort (the Borg scale). Nowadays, thousands of researches have been focusing on the use of such scales similar to the Borg scale for the rating of perceived exertion for specific population. Since the development of this scale, a number of scales for the measurement of perceived effort or exertion have been developed and validated. These scales allow the user to choose a number (rating of perceived exertion) to describe their effort during exercise. More specific research has involved the exact intensity of perceived exertion as it relates to anatomical location as the origin or source of the feeling of exertion (i. g. legs, chest, and arms). In addition, more research involved the specific intensity of perceived exertion as it relates to the intensity and specificity of the effort (e. g. biking, running ..etc) . Physical exertion subjective perception is the result of the feeling of effort, strain, discomfort and fatigue that a person experiences during exercise (Robertson and Noble 1997). The subjective responses involve three main effort continua : physiological, perceptual, and performance (Robertson 2004). As the exercise intensity or exercise performance increases, changes should occur on both the physiological and perceptual exertion. Moreover, this indicates that the perceptual response about the performance may provide as much information as the physiological response. This area of research has gained a great interest from exercise physiologist, sport experts, sport psychologist and clinicians. The following terms and definitions were proposed by Robertson (2004) to indicate the mostly commonly used terms in this area :
Category RPE scales : A perceived exertion rating scales which have numerical categories that represent equal intensity interval such Borg 6-20 and OMNI Differentiated RPE :
an RPE assigned specifically for some anatomical areas such as the Arms, legs, and/or chest.
Physiological mediators : physiological factors that influence the intensity of the RPE such as lactate, ventilation and heart rate.

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