1. Weight Management: Finding a Healthy Balance
Chapter 15
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2. Table of Contents Energy Balance Equation Body Composition Obesity
Consequences of Dieting
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3. Introduction
More than 50 percent of American adults are considered overweight or obese
More than 30 percent of American children are considered overweight or obese
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4. Introduction
Physical activity has been engineered out of day-to-day life
The food environment has become more “toxic” by the day
Eating disorders have emerged due to social pressures to be thin
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5. Energy-Balance Equation
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6. Energy-Balance Equation
Body weight is influenced by:
Energy expended through physical activity
Energy gained through dietary intake
Energy is measured in kilocalories (kcal)
This is expressed by the ‘energy-balance equation’
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7. Energy consumed = Energy expended
Weight Stability
2000 kcal
The left side represents energy consumed
The right side represents energy expended through physical activity or exercise
This situation depicts a balanced energy equation – a stable weight is achieved
Energy consumed = Energy expended
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8. Energy consumed > Energy expended
Weight Gain
2300 kcal
1840 kcal
Energy consumed beyond the body’s needs are stored as fat
Weight gain occurs when energy consumed exceeds energy expended through physical activity
Energy consumed > Energy expended
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9. Weight Loss
2000 kcal
2400 kcal
Energy expended through physical activity must exceed energy consumed for weight loss to occur
Energy consumed < Energy expended
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10. Energy-Balance Equation
Some people want to put on a few pounds to look better, or to “bulk up” for athletic events
Healthy weight gain is best achieved through a regimen of increasing (healthy) food intake while participating in a strength training program to develop lean muscle tissue
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11. Energy Needs of the Body
A large amount of energy must be consumed by the body in order to carry out vital functions such as:
Blood circulation
Respiration
Brain activity
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12. Basal Metabolic Rate (BMR)
The minimum amount of energy the body requires to carry on all vital functions
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