energy cost of physical activity definition

The basic and largest component of the TEE is basal energy expenditure (BEE). This technique accounts for all factors and measurements to determine PAL and energy expended from daily physical activity and should provide a useful approach for academic, research, clinical, and public health settings.Ĭomponents of the EER are incorporated in the template spreadsheet using Microsoft Excel 2000 (Microsoft Corp, Redmond, Wash) ( Table) to calculate TEE based on PAL for a man or a woman aged 19 years or older. The template includes components of energy expenditure that include PAL calculation in user-friendly spreadsheets. We have created a template using a spreadsheet to simplify the EER calculation process. Using the EER predictive equations, we devised an easy way to calculate daily energy requirements for both men and women based on PAL. But understanding EER equation components and factors can be time consuming. In addition, it has the potential for use in clinical settings as well as academic and research settings for nutritional and physical activity assessment and for weight management studies when energy expenditure from physical activity is not measurable. This approach differs from the more commonly used predictive equations used in clinical settings (e.g., the Harris–Benedict equation) to estimate basal energy expenditure or TEE or to assess energy requirement ( 4). All aspects of energy expenditure in a 24-hour period, including energy expended in synthesizing new tissues or as a result of lactation or growth and development, are accounted for ( 3). The equations used to calculate the EER consider factors that affect an individual's daily energy expenditure, account for increments in energy expenditure based on physical activity, and quantify the effect of the PAL on total energy expenditure (TEE) ( 1). Based on the energy intake needed to maintain energy balance in individuals with healthy weights, the EER consists of predictive equations for calculating the amount of energy intake that will maintain any individual's body weight, as measured by doubly labeled water studies ( 1). The EER is calculated from a set of equations and factors that account for an individual's energy intake, energy expenditure, age, sex, weight, height, and physical activity level (PAL). The motivation for establishing the EER was tied to public health awareness and concern about the increased prevalence of overweight and obesity in North America and the need to adequately assess energy balance ( 2). In the report Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein and Amino Acids (Macronutrients) ( 1), the Institute of Medicine (IOM) of The National Academies sets the Dietary Reference Intake for energy as the Estimated Energy Requirement (EER).

It should prove a useful approach in research, clinical, and public health settings. This technique accounts for all factors and measurements to determine physical activity level and energy expended from daily physical activity. We use the EER equations of the DRI Committee and provide a spreadsheet template for the calculation of physical activity level. We provide an easy way to calculate daily EERs for adults based on physical activity level. However, physical activity level is often difficult to measure and accurate assessment of energy expenditure not always possible. Including physical activity level in the calculations makes determining energy expenditure possible and achieving energy balance a more realistic goal. The EER is based on calculations that account for an individual's energy intake, energy expenditure, age, sex, weight, height, and physical activity level. The Dietary Reference Intakes (DRIs) define the daily requirement for energy as the Estimated Energy Requirement (EER).

Energy cost of physical activity definition