HOSA Nutrition Weight Management
Across the Life Cycle
Regulation of eating occurs primarily in the - answer brain in the hypothalamus where
hunger and satiety chemicals work to regulate eating.
Leptin - answer an appetite-suppressing hormone involved in maintenance of body
composition, receives signals from fat and the intestine to make you feel full so eating
will stop.
Ghrelin - answer a hormone from the stomach that signals the brain that it's time to eat,
released from the stomach and signals the hypothalamus that it's time to eat
Factors that affect BMR include - answer age, height, growth cycle, and body
composition, temperature (body temperature as well as climate temperature) and
fasting, or undereating
Hypothyroidism - answer a condition in which the thyroid gland secretes too little
thyroxine and T3, resulting in a lower basal metabolic rate
Obesity can be defined as - answerexcess fat accumulation under the skin and around
the organs in the body.
subcutaneous fat - answerFat accumulated in the lower body (the pear shape), directly
under skin
visceral fat - answerFat in the abdominal area (the apple shape), stored in abdominal
cavity
Abdominal fat correlates more with health risks such as - answercardiovascular disease
and type 2 diabetes. In women, it also correlates with breast cancer risk and gallbladder
disease.
Where we deposit fat is influenced by - answerhormones and heredity.
Limits of calculating BMI - answerIt may overestimate body fat in athletes and others
who have a muscular build, It may underestimate body fat in older persons and others
who have lost muscle.
Hamwi method - answerassess ideal body weight by considering height, frame size,
and gender.
, Hamwi formula for men - answer5-ft man at 106 lb. Add or subtract 6 lb for every inch
above or below 5 ft. This is for a medium frame man. For a small frame, deduct 10%,
and for a large frame, add 10% to calculation. A 6-ft man with a medium frame therefore
would have an ideal body weight of 178 lb.
Hamwi formula for women - answer5-ft woman at 100 lb. Add or subtract 5 lb for every
inch above or below 5 ft. For a small frame, deduct 10%, and for a large frame, add
10% to calculation. A 5-ft 3-in woman of medium frame's ideal body weight would be
115 lb.
How is frame size estimated for Hamwi method - answerdoing a wrist measurement.
The wrist measurement for a medium frame woman would be 6 in. and for a man 7 in.
Obesity is now viewed as a - answerchronic inflammatory disease because it is believed
that inflammation is "turned on" in the body with increasing visceral or abdominal fat
Being overweight can increase of - answerCoronary heart disease, Insulin resistance
and type 2 diabetes, Cancers (endometrial, breast, and colon), Hypertension (high
blood pressure), Dyslipidemia, Stroke, Liver and gallbladder disease, Sleep apnea and
respiratory problems, Osteoarthritis, Gynecological problems (abnormal menses,
infertility)
Disease risk increases as waist circumference and BMI - answerincrease
Body fat assessment is much more specific to your - answeractual fat content and thus
provides a more accurate picture.
The two most common methods of body fat assessment used are - answerskinfold
measurement and bioelectrical impedance analysis (BLA) machines or scales.
What happens in skinfold measurement - answera trained specialist uses calipers to
measure specific spots on the body. These measurements are compared to a chart that
estimates fat percentage.
Accuracy of a skinfold measurement - answervaries greatly based on the user's
abilities.
Bioelectrical impedance analysis (BLA) is the - answertechnology behind the many fat
percentage machines in use at fitness centers and in scales sold for home use.
Accuracy of BLA - answerthe error rates for these can be as high as 8%.
Body fat measures that are more accurate are - answerX-ray analysis (DEXA scan) and
water displacement method
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