PE 116 Chapter Notes - Chapter 8: Insulin Resistance, Fidgeting, Overconsumption
19 Jun 2018
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● Overweight
– Having a BMI of 25 to 29, or having a body weight more than 10% above
recommended levels
● Obese
– Having a BMI of 30 or more, or having a body weight more than 20% above
recommended levels
● Underweight
– Having a BMI below 18.5, or having a body weight at least 10% less than
recommended levels
Key Points in Weight Management
● Successful changes to diet and exercise cannot be short-term fixes.
● Your overall percentage of body fat is more important than your weight or weight
loss.
● "Healthy weight loss" means slow, sustained loss of fat.
● Energy balance is achieved when long-term weight management balances
calories consumed with calories expended.
Why Is Obesity on the Rise?
● Worldwide trend:
– "Globesity" is reaching epidemic rates due to diets high in processed fats, meats,
sugars, and refined starches, combined with more sedentary lifestyles.
● Energy imbalance is common in America due to:
– Overconsumption
– Too little exercise
– Hereditary factors
– Limited non-exercise activity, such the activity described in the human "fidget factor"
– Demographic and lifestyle factors
How Body Weight Affects Wellness
● High BMI and abdominal fat are associated with higher chronic disease risk.
● Body weight:
– Can promote or diminish fitness
– Can have social consequences
– Can influence risks for chronic diseases
– Affects life expectancy
● Metabolic syndrome:
– Condition marked by high blood pressure,
cholesterol, and abdominal fat deposits, along
with insulin resistance
Diets often lead to weight cycling
(repeatedly losing and then gaining back weight).
