Question

what are the two components of energy required of one body . explain​

Answer 1

The energy requirement was defined (section 2) as the amount needed to maintain health, growth, and an “appropriate” level of physical activity. Using this definition it is impossible entirely to avoid value judgements on what is meant by health and appropriate activity. Values, and consequently decisions, may change under different conditions. The aim of this report is to provide the information on which decisions can be based.

The energy requirement was defined (section 2) as the amount needed to maintain health, growth, and an “appropriate” level of physical activity. Using this definition it is impossible entirely to avoid value judgements on what is meant by health and appropriate activity. Values, and consequently decisions, may change under different conditions. The aim of this report is to provide the information on which decisions can be based.Energy needs are determined by energy expenditure. Therefore, in principle, as was recognized in the report of the 1971 Committee (1), estimates of requirements should be based on measurements of energy expenditure. This kind of information is difficult to obtain, and sometimes the only feasible approach is to estimate requirements from measurements of intake. If people are, on average, in a steady state, with appropriate body composition and levels of activity, measurements of their mean habitual intake will provide an estimate of their mean expenditure. The intention of the word “habitual” is to even out short-term fluctuations in intake, but it is not possible to define it with precision.

The energy requirement was defined (section 2) as the amount needed to maintain health, growth, and an “appropriate” level of physical activity. Using this definition it is impossible entirely to avoid value judgements on what is meant by health and appropriate activity. Values, and consequently decisions, may change under different conditions. The aim of this report is to provide the information on which decisions can be based.Energy needs are determined by energy expenditure. Therefore, in principle, as was recognized in the report of the 1971 Committee (1), estimates of requirements should be based on measurements of energy expenditure. This kind of information is difficult to obtain, and sometimes the only feasible approach is to estimate requirements from measurements of intake. If people are, on average, in a steady state, with appropriate body composition and levels of activity, measurements of their mean habitual intake will provide an estimate of their mean expenditure. The intention of the word “habitual” is to even out short-term fluctuations in intake, but it is not possible to define it with precision.As in all previous reports, the requirements derived in this report are intended to apply to people who are healthy, and in general the effects of disease should be considered separately. However, it is recognized that in many populations this condition is unrealistic. In children in particular, repeated infections are so common that the effects are discussed separately in section 9.

Answer 2

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The energy cost of growth includes two components: the energy value of the tissue or product formed and the energy cost of synthesizing it. The total cost will therefore depend upon the composition of the product.