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EVALUATION OF THE PERFORMANCE OF ATHLETES BY MEASURING SUBJECTIVELY PERCEIVED LOAD

V.A. KURASHVILI FSBI FEDERAL SCIENCES CENTER FOR PHYSICAL CULTURE AND SPORT, MOSCOW, RUSSIA

Objective: researchers have contributed to an increased collective understanding of the physiological demands in cross-country skiing. The aim of the study was to evaluate the correlation of physiological and psychometric determinants of physical performance of skiers.
Materials and Methods: this study compared the physiological responses (the blood lactate concentration and heart rate) and rating of perceived exertion (RPE) of 8 top Nordic skiers to treadmill running. RPE is an individual's evaluation of fatigue based on a scale from 0 to 10. Test consisted of a maximal incremental protocol involving 3 min steps during which metabolic and cardio-respiratory parameters were measured, as well as RPE.
Results: it is found that elite endurance skiers perform 80% or more of their training at intensities clearly below their lactate threshold and use high-intensity training surprisingly sparingly. Studies involving RPE in already well-trained athletes have shown equivocal results at best.
Conclusions: the available evidence suggests that physiological responses and rating of perceived exertion show close agreement during endurance performance.
Keywords: 
KEY WORDS: comparative analysis; physiological and psychometric determinants; physical performance of athletes.