Physical Activity And The Use Of Calories
What Is It?
- Physical activity does not need to be strenuous to achieve health
- 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
- 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
The following are some variables when physical activity and calorie
expenditure is considered:
- Physical activity can increase the basal metabolic rate
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
- Try our health
tools to find out how many calories are burned throughout
- 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
- 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
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.
Articles on Physical Activity
Reference Source 48, 101, 106