Multiple choice questions from Chapter 3 reading Module 3: Discussion Board Post
ID: 144819 • Letter: M
Question
Multiple choice questions from Chapter 3 reading Module 3: Discussion Board Post 1 Understanding energy expenditure is very important when considering caloric intake and how it relates to healthy weight maintenance. Metabolism is something that may come up in conversations with individuals when discussing body weight or weight loss. Consider this scenario: You are speaking to a friend or family member about health and nutrition and they bring up the topic of weight loss. Your friend or family member says, "It's just How can I increase my Post your response to your friend or family member expenditure and how to choose activities to increase metabolism?" on the discussion board. Your response should include all components of metaboli energy expenditure and how to monitor it. Your response should explain these components and the factors that influence them. Please refer to yourExplanation / Answer
Components of energy expenditure includes 1: Basal metabolic rate, 2: energy expenditure on physical acitivity and 3: thermic effect of food. Basal metabolic rate refers to the energy used while the person is at rest (no physical activity). It results in around 60% of total energy expenditure. Second component is the energy expenditure during physical activity. Thermic effect of food refers to the energy expenditure during digestion, absorption and storage of food. It accounts for around 5-15% of the total energy expenditure.
Basic metabolic rate varies person to person depending on age, gender, physical fitness, body weight (size). It is also regulated by genetic as well as environmental factors. Basal metabolic rate can be meaasured by indirect calorimetry by measurement of O2 consumption and CO2 production. To measure the total energy expenditure, direct calorimetry is used wherein heat produced by body is measured directly in whole room calorimeters. Other methods are double labeled water, bioeletrical impedance analysis, records of physical activities and predictive equations.
Based of the results of the measurement, the activities can be decided to increase the metabolism. The energy expenditure of the body can be increased by muscular exercise which in turn burn the calories. Some of these are sports (basket ball, boxing, swimming), dancing, horse riding etc Since thermic effect of food is responsible for only 10% of the energy expenditure; increased physical acitivity can result in weight loss as it accounts for 20-30% of the daily energy expenditure. Walking, exercise, dance, aerobics are some of these which can boost up the daily energy expenditure and thereby serve in weight loss.
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