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Aim of the study was to determine physical activity’s part of daily energy expenditure by heart rate monitoring and using data to control athletes’ nutritional intake. Group of 10 male and 4 female wrestlers (age = 21 ± 1.8) at national level, who train 15 hours per week served as subjects in this investigation. The 72-hour HR recording was performed with a TEMEO cardiotelemetric system (made in Bulgaria). The energy expenditure during physical activity is determined by Method 1 of Hiilloskorpi et al. (2003). The determined daily energy expenditure is compared to the theoretically calculated. The deference is less than 100 kcal, but if subjects change the intensity, volume or duration of the workouts or increase their number, the difference will be much more evident.

Determining Energy Expenditure from Heart Rate Monitoring during Training Sessions at Bulgarian Wrestlers