BASAL METABOLIC RATE

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BASAL METABOLIC RATE

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BASAL METABOLIC RATE Presented by, Ajith K K Asst. Prof Nursing college kishtwar
Energy Energy is the capacity to do work. We need energy for : Basal Metabolism • Basal Metabolic Rate- BMR: energy required for activity of the internal organs and maintaining of body temperature. Physical Activity Metabolizing of Food
Calorie: unit used to measure energy Kilocalorie is a unit of energy commonly used to express energy value of food. Food energy is the amount of energy in food that is a available through digestion. The energy value of food indicates its value to the body as fuel.
Kilocalories come from foods and beverages Bomb calorimeter used in laboratories to measure kilocalories in foods and beverages Results must be adjusted for the physiological fuel values Nutrition analysis software or food composition tables can estimate energy in Carbohydrate and Protein: 4 kcal/gram Fat: 9 kcal/gram Alcohol: 7 kcal/gram
What Is Energy Balance and Why Is It Important? Energy balance is achieved when the kilocalories consumed equal the kilocalories expended
The Concept of Energy Balance
The Basal Metabolic Rate Keeping your Basal Metabolic Rate (BMR) as high as possible is vital when it comes to weight loss and maintaining healthy body fat levels
Factors that Affect Basal Metabolic Rate Exercise: This is one of the biggest factors that influence BMR. BMR is higher in people who exercise regularly
Hormones: an increase in thyroid hormones increases BMR, decreased levels of the hormone lower BMR Body Temperature: Excessive heat or cold raise BMR
Gender: Males tend to have higher basal metabolism than females due to an abundance of hormones such as testosterone ad elevated levels of muscle mass compared to females • Age: as we get older basal metabolic rate becomes increasingly slower.
Surface Area: Taller individuals have a higher BMR compared to shorter individuals. More surface area means more heat lost from the body, which causes the metabolism to speed up in order to maintain body temperature.
Stress and Illness: increase in hormone activity due to physical or physiological stress increase BMR. Starvation: Fasting for more than 48 hrs. will lead to a decrease of 50% of Basal Metabolic Rate.

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