COMPARATIVE ANALYSIS OF METHODS FOR ESTIMATING THE POWER OUTPUT OF SKI RACERS WHEN CHANGING THE LEVEL OF RELIEF GRADIENT

The purpose of research: to conduct a comparative analysis of the formulas used to calculate the power output of ski racers, taking into account the impact of external forces.

Methods and organization of research. The research methodology consists of an analysis of scientific literature on the problem of studying the assessment of power output under the influence of external forces on the body of a skier-racer.

The research results and their discussion. In endurance sports, the indicator of power output is of particular importance for building the training process. The power developed during movement is one of the key variables determining competitive performance in many cycling sports. Special attention should be paid to external forces that affect the body of a ski racer during the movement of an athlete on a ski track. In the process of special physical training, the following forces should be distinguished that affect the skier's body: gravity, rolling friction and air resistance.

Conclusion. An analysis of the external forces acting on the body of a ski racer has shown that the results of calculating each of the forces have special features when evaluating the physical quantities used in the formula. Regarding the choice of one or another formula for determining the power output, the authors J.F. Moxnes, K. Hausken, O. Sandbakk, E.P. Andersson, K. McGawley use two identical versions of the equation, which are based on the sum of the opposing forces.

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