THE RESPIRATORY EXCHANGE RATIO IN ATHLETES’ NUTRITIONAL PRACTICE
Abstract:
Purpose: Identify the main factors influencing energy consumption through respiratory exchange ratio (RMR) and macronutrients consumption at rest, reported to muscle/liver enzymes. Materials and methods: We conducted a cross-sectional study on a group of elite athletes consisting of 23 rowers, mean age 18.83±1.46 years, 91.65±7.67 kg weight, and 194.6±4.97 cm height. The resting metabolic rate has been determined among athletes using Cosmed Quark CPET equipment and the metabolic rate at rest protocol (RMR), associated with blood determinations of the main muscle, and liver enzymes (CK, LDH). Results: We achieved an average energy consumption at rest equivalent to 2732±249.3 kcal. R value reached an average of 0.89±0.93. Value associated with resting energy expenditure, both in the case of carbohydrates (%), and in the case of lipids (%) p =0.0001. Signifying that R≤0.86 represents a protective factor in order to obtain a lipid consumption value at rest ≥45% of total energy consumption. Conclusions: We established a definite relationship in the consumption of macronutrients at rest, and metabolic/ respirators indications of athletes. Also, adaptation of their daily activities will help increasing the effort capacity of the athlete by balancing the respiratory exchange rate.
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