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Physical Activity And The Use Of Calories

What Is It?
- Physical activity does not need to be strenuous to achieve health benefits.
- Men and women of all ages benefit from a moderate amount of daily physical activity (for example: 30 minutes of brisk walking or 15 minutes of jogging).
- Previously sedentary people who begin physical activity programs should start with short sessions (5-10 minutes) and build up to the desired level of physical activity.

Why Is It So Important?
- Physical activity improves quality of life.
- Physical activity extends longevity, protects against the development of CHD, stroke, hypertension, obesity, non-insulin-dependent diabetes mellitus, osteoporosis, colon cancer, and depression.
-Physical activity helps maintain full functioning and independence among the elderly.
- Relationships between physical activity and improved health include:

  • A reduced oxygen demand at any given level of physical activity.
  • A reduced tendency for blood to form clots where arteries have narrowed.
  • An increased elasticity in the arteries.
  • Changes in the brain and brain chemistry that may improve mood and cognitive functioning.

PHYSICAL ACTIVITY AND THE USE OF CALORIES

  • Physical activity can increase the basal metabolic rate (BMR) by approximately 10%. This increase can last for up to 48 hours after the completion of the activity.
  • Physical activity helps in the utilization of calories. The number of calories used is dependent on the type and intensity of the activity, and on the body weight of the person performing the physical activity.
  • Physical activity assists in reducing the appetite.
  • For the purpose of weight loss, physical activity can reduce body fat and is more beneficial in combination with reduced intake of calories.
  • Physical activity also helps in the maintenance and control of weight.
  • Try our health tools to find out how many calories are burned throughout various activities.
The following are some variables when physical activity and calorie expenditure is considered:
  • Time: The amount of time spent on physical activity affects the amount of calories that will be expended. For example, walking for 45 minutes will burn more calories than walking for 20 minutes.
  • Weight: The body weight of a person doing the physical activity also impacts the amount of calories used. For example, a 250-pound person will expend more energy walking for 30 minutes than a 185-pound person.
  • Pace: The rate at which a person performs the physical activity will also affect the amount of calories used. For example, walking 3 miles per hour will burn more calories than walking 1.5 miles per hour.

Physical activity should be done at a rate that is appropriate for the person. An evaluation by an exercise physiologist is helpful to avoid injuries that can occur if physical activity is initiated without much consideration given to the type, duration of physical activity, and the physical condition of the person.

More Articles on Physical Activity


Reference Source 48, 101, 106

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