HPRO 3250 Chapter Notes - Chapter 11: Anabolic Steroid, Androstenedione, Childhood Obesity
16 Jan 2013
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Underweight is having too little body fat to maintain optimum health. Overweight occurs when someone has a moderate amount of excess body fat, while obesity when someone has excess body fat that adversely affects health. Body mass index, body composition, and the waist to hip ratio and waist circumference are tools that can help you evaluate the health of your current body weight. None of these methods is completely accurate, but most may be used appropriately as general health indicators. The energy balance equation relates food intake to energy expenditure. Eating more energy that you expend causes weight gain, while eating less energy than you expand causes weight loss. The three components of energy expenditure are basal metabolic rate, the thermic effect of food, and the energy cost of physical activity. There are many factors that affect our ability to gain and lose weight. Our genetic background influences our height, weight, body shape and metabolic rate.
