Weight Management: Finding a Healthy Balance

1
Weight Management Finding a Healthy Balance

• Chapter 15

2
Objectives

• To discuss the differences between overweight and
  obesity and implications for health
• To present the concept of caloric balance in
  weight control
• To examine the role of exercise and lifestyle
  modification in maintaining a healthy weight
• To gain familiarity with the consequences of
  dieting and eating disorders
• To set and evaluate personal goals for
  maintaining a healthy weight

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

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

5
Energy-Balance Equation
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

7
Weight Stability

• 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

8
Weight Gain

• Energy consumed beyond the bodys needs are
  stored as fat
• Weight gain occurs when energy consumed exceeds
  energy expended through physical activity
• Energy consumed gt Energy expended

9
Weight Loss

• Energy expended through physical activity must
  exceed energy consumed for weight loss to occur
• Energy consumed lt Energy expended

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

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

12
Basal Metabolic Rate (BMR)

• The minimum amount of energy the body requires
  to carry on all vital functions