17th Annual ECSS-Congress, Bruges 2012

Abstract details

Abstract-ID: 778
Session: [MO-PM21] Physiology - Mixed Session
Lecture room: F2
Date & time: 08.07.2016 / -
Title of the paper: DAILY VARIATIONS IN RESTING METABOLIC RATE
Authors: Vucetic, V., Grgic, J., Tomic, J., Brborovic, H.
Institution: University of Zagreb, Faculty of Kinesiology, Croatia; Sisters of Charity Hospital; University of Zagreb, School of Medicine, Andrija Štampar School of Public Health
Department: Department of Sport Kinesiology
Country: Croatia
Abstract text INTRODUCTION Resting metabolic rate (RMR) are indicators of the amount of calories a person needs during one day at rest. They provide information on the amount of calories burnt on basic body functions and also the amount of calories burned by food intake and physical activity. The purpose of this study was to determine possible daily variations in measured values of resting metabolic rate (RMR). METHODS Twenty male students of kinesiology (A: 24.3±3.3 years, H: 180.83±19.50 cm, W: 80.36±35.10 kg) were tested for RMR via COSMED QUARK CPET during one day, in the morning (8 am) in the midday (1 pm) and in the evening (5 pm). All measurements were conducted at the Sports Diagnostic center at the Faculty of Kinesiology, University of Zagreb. During the test the subject is lying without movement for 16 minutes and the RMR values are based on the last 10 minutes of the test. Statistical analysis was done using repeated measures ANOVA (Statistica for Windows 12.0), and statistical significance was set at p≤0.05. RESULTS The test results and comparison have shown statistically significant (F(1,19)=43.,99; p≤0.05) differences between RMR results of the morning (2071.55±378.93 kcal/day) compared to the midday (2623.50±658.92 kcal/day) and evening data (2668.05±451.41 kcal/day). The results of the morning RMR testing showed that morning values are much lower and closer to the values of basal metabolic rate (BMR) than to RMR. DISCUSSION Obtained results shown that the result of RMR can vary up to 22,36 %. Lower values of the morning testing are associated with the lower activity of the digestive system, because the subjects fasted from food. During sleep the calorie consumption is also lower due to the decreased activity of muscle cells, and central nervous system. CONCLUSIONS RMR results showed daily variability. For the most accurate results, spirometry should be done early in the morning. We strongly recommend following the outlined guidelines for RMR. If RMR testing on COSMED QUARK CPET system is used following the recommendation, this system is a very good and useful tool for measuring resting metabolic rate and ventilation parameters Do not insert authors here
Topic: Training and Testing
Keyword I: Resting metabolic rate
Keyword II: student
Keyword III: daily variation