Energy expenditure during a race orienteering

Abstract

The objective of this Study was to estimate the energy expenditure during a race pedestrian orienteering in male athletes of category H21E. The study population was consisted of runners affiliated to the Gaúcha Orienteering Federation (FGO) and the Brazilian Orienteering Confederation (CBO). The sample consisted of 06 athletes from the elite category. They followed a track with 30 control points, with a distance between the points a total of 8100 meters. Therefore, to determine the distance and time, were used the Helga Orienteering Software Program, version 2010/07-1, specific software for analysis of route guidance. Through the OCAD Program was made a topographical analysis of the letter and thus determining the slope the terrain. The O2 consumption is a function that depends on the intensity of the work performed and body mass displaced, so it was necessary to check the corporal weight of each athlete. To represent the amount of energy expended was used the formula where 1 = V02 1 .min 5 Kcal. To estimate O2 consumption equations were used to ACSM, during the race at speeds above 134 m / min, we used the formula, VO2 = (0.2 x speed) + (0,9 x speed x 9 x Tilt) + 3.5 and for walking at speeds between 50 and 100 m / min the equation, VO2 = (speed x 0.1) (1.8 x speed x Tilt) + 3.5 and for speed between 100m/min and 134m/min, considered trot, it was for this work the same formula of the race, this equation is capable of use for these speeds if the individual is actually running. The average energy consumption of advisors during the execution of the track was 659.43 kcal. It is concluded that physical activity performed was predominantly aerobic, intensity medium, but the supervisor needs to constantly anaerobic substrate, due to constant changes of pace and intensity.