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There
is an epidemic of obesity in many countries such as the US and
Western Europe. Although studies have supported the role of
genetics, our genes have been the same for thousands of years,
but only recently has obesity increased. It
appears that reduced physical activity, rather than increased
food intake, is the major culprit and the difference is about
300 Calories a day, which could be offset by an hour of easy cycling
per day.
In
an 8-year-old project that has studied weight loss in 3500 extremely
obese patients who lost (and maintained the loss) of an average
of 60+ pounds. The common factor was a
high level of physical activity with an average weekly
expenditure of 2545 exercise Calories in women and 3293 Calories
in men (equal to an hour of moderate physical activity per day)
coupled with an estimated intake of 1500 Calories per day.
These
Calories were eaten in 4 or 5 small meals throughout the day rather
than skimping on breakfast and lunch and then eating a large meal
at night. Plus it was a low fat diet with only about 20% of total
Calories coming from fat.
Most
had failed to maintain their weight loss with other weight loss
regimens, and almost universally attributed the success in this
program to the sustained increase in their weekly level of physical
activity.
Physical
activity undoubtedly has a positive effect on your weight and
figure by:
- increasing energy output and Caloric expenditure
- supressing your appetite
- increasing Basal Metabolic Rate (BMR)
- maintaining lean body mass at the expense of fat
The
basic premise of all weight control programs is that weight loss
occurs when the number of Calories "burned" over a 24
hour period is greater than the number consumed. The net deficit
results in weight loss. (1 pound of body fat = 3500 Calories)
WEIGHT
LOSS (IN LBS) = (CALORIES BURNED - CALORIES CONSUMED)/3500
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