Calculadora EER (Estimated Energy Requirement)

The EER (Estimated Energy Requirement) Calculator estimates the daily caloric needs of an adult based on the Institute of Medicine (IOM) 2005 equation. The result is obtained by multiplying the Basal Metabolic Rate (BMR) by the Physical Activity Level (PAL). BMR represents calories burned at rest for vital functions, while PAL adjusts this value according to additional energy expenditure from daily activities and exercise. This tool is useful for meal planning, weight management, and diet prescription, providing a personalized caloric target.

The calculation follows the formula EER = BMR × PAL. BMR is calculated using specific equations for sex, weight, height, and age (such as Mifflin-St Jeor). PAL is selected from categories like sedentary (1.2), lightly active (1.375), moderately active (1.55), very active (1.725), or extremely active (1.9). The result is an approximation, as individual factors like body composition and genetics can influence it. It is recommended to use the calculator as a starting point, adjusting according to the body's response.

When to use? Ideal for nutritionists, physical educators, and people who want to understand their energy needs to lose, gain, or maintain weight. For example, a sedentary adult wanting to lose weight can use the EER as a caloric ceiling, while an athlete seeking muscle gain can use it as a baseline for a caloric surplus. Important: the calculator does not replace professional evaluation, especially in cases of metabolic diseases, pregnancy, or lactation.

Cautions: the IOM 2005 EER formula was developed for healthy adults with normal BMI. It may not be accurate for obese individuals, the elderly, or those with atypical body composition. Additionally, PAL is self-reported, which can lead to overestimation or underestimation of actual expenditure. For greater accuracy, consider using indirect calorimetry measurements or consulting a nutritionist.