Humans evolved to store excess
calories as fat as a means for survival. Today, there are about one
billion obese people worldwide and the rates are increasing in most
developing countries. Although there is around $35 billion spent on
weight-loss and diets annually, 66% of Americans are overweight and 32%
are considered obese. Regular exercise has been shown to increase fat-loss
in both obese and non-obese people. (1)
Obesity related health problems
include: hypertension, type 2 diabetes, dyslipidemia, coronary artery
disease, metabolic syndrome, osteoarthritis, obstructive pulmonary
disease, sleep apnea, certain cancers, and depression. (2,3)
Obesity rates have been
increasing over the past 50 years—making poor genetics an unlikely
explanation for the rise. Other explanations may include; decreases in
human movement due to increases in general transportation, human energy
saving devices, sedentary lifestyles, TV, internet, poor sleeping habits,
more calories, larger portion sizes, and fast-food. Media influences may
compound the intake dilemma when we choose the foods we eat. A typical
American child sees 10,000 food commercials each year, mainly for fast
food, candy, soda, and sugary cereals. In children and adolescence ages
2-19; 33% are overweight and 17% are obese, and obesity has quadrupled
over the past 25 years. (4,5)
The cause of obesity has been
studied for many years. Researchers think the key to maintaining a healthy
bodyweight is management of the intake and expenditure energy balance.
Energy Intake, measured in calories, is what you take in, including, fats,
protein, carbohydrates, and alcohol. Energy Expenditure, measured in klocalories (kcal), refers to muscular activity, resting metabolic rate,
and the thermic effect of food. Caloric expenditure during physical
activity or exercise is determined by the type of exercise, frequency,
intensity, duration (6).
Overweight is defined as having
a Body Mass Index (BMI) greater than 25 kg/m2 and obesity defined as
having a BMI 30 kg/m2. There are two types of obesity—android and gynoid.
Android obeisty refers to individuals who store adipose tissue, or fat,
mainly in the trunk and abdominal region—‘apple shape’. Android obesity
is associated with an even increased risk for health problems. Gynoid
obesity refers to individuals whose body may resemble a ‘pear shape’ and
fat is stored in the hip and buttocks region. (7)
While ACSM guidelines for
physical activity include moderate-intensity cardiovascular activity 30
min five days per week, For weight loss and maintenance 60 to 90 minutes
of physical activity may be necessary.
MEP and your bodyweight management
Minnesota Exercise Professionals
can help you manage your weight, starting with an exercise program
prescription that is appropriate for your needs. In addition to
determining workloads for aerobic exercise, we will help you with
instruction and progressions for strength and core training exercises. We
can offer some nutritional guidance to help you control energy intake.
Most importantly we hope to educate and equip you with strategies on how
to maintain a healthy bodyweight.
The assessment package offered
by MEP includes measurement of height & weight, BMI calculation, body fat
% estimation, and girth measurements. We can monitor your progress by
re-assessments. Although bodyweight is one way to measure change, we can
also re-assess body composition and cardiorespiratory fitness. The scale
does not tell the whole story about your progress.
You will overcome the ominous
obesity statistics if you can embrace a healthy lifestyle. With the help
of MEP, you will be equipped with more tools to manage your bodyweight,
have more energy to perform activities of daily living, restore self
confidence, and feel better.
(1) ACSM.
ACSM’s Certified News. Managing a Healthy Bodyweight for Life. Sorace, P.
Jan-Mar 2008.
(2) ACSM.
ACSM’s Guidelines for Exercise Testing & Prescription. 7th ed. Baltimore:
Lippincot Williams & Wilkins, 2006.
(3) ACSM.
ACSM’s Certified News. Metabolic Syndrome: An Important Target for
Exercise Intervention. Myers, J. April-June 2006.
(4) Foreyt,
J. ACSM. ACSM Deskside Learning. Long-Term Weight Loss: What Works, What
Doesn’t & Why. Feb, 2008.
(5) ACSM.
ACSM’s Certified News. Coaching Weight Management Through Behavior
Modification. Sorace, P., Jan-Mar 2008.
(6) ACSM.
Health/Fitness Instructor Workshop. University of Texas, Arlington,
Department of Kinesiology, May 2005.
(7) Going,
Scott. Human Body Composition. University of Arizona Lecture, 1997.
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