Energy expenditure and food energy intake in different professional groups of N. Novgorod
AbstractIn this paper we have studied the energy expenditure and food energy consumption of different professional groups of the adult population of the city N. Novgorod. Assessment of daily energy expenditure was performed using the coefficients of physical activity (CPA) in the working period, the free time and the total daily average activity. It is shown that the rest time averaged 40–50%, while physical activity time 60–50%, respectively. The ratio of physical activity duration to rest duration was similar in the groups with different CPA. It was revealed that the proportion of energy expenditure associated with physical activity accounted for 70–80% and was higher in the groups of occupations with a higher work intensity. It was found that on the amount of daily physical activity the CPA of the working period has a more significant impact than the CPA of the rest time. To estimate the energy intake we use data on the chemical composition and energy value of the diet. The use of the relationship of dietary energy to the value of basal metabolism allowed to compare the values of energy expenditure between different professional groups. The advantage of the new energy expenditure unit is that it, as well as the CPA, is practically independent of sex, age, height and weight. Analysis of the relationship of energy consumption and energy expenditure did not reveal any dependence on the activity in the working period or the daily physical activity. Based on these data we discuss the feasibility of normalization of the physical activity and the prevention of sedentary lifestyles.
Keywords:energy expenditure, different professional groups, coefficients of physical activity