BPK 110 Lecture Notes - Lecture 9: Leptin, Neuropeptide Y, Peptide Yy
9 Apr 2017
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Lecture 9 energy balance and weight management. Cardiovascular diseases (high blood lipids, hypertension, stroke) Body mass index (but not always accurate: <18. 5 = underweight, 18. 5-25 = healthy, 25+ = over, 30+ = obese. Most important to have lean body mass (muscle, bone, internal organs) and min/low levels of body fat (body composition) Visceral: around organs: higher health risks, bmi, waist circumference estimate visceral fat, bmi = obese and wc > 102cm (m) or 88cm (f) increase health risk. Factors that increase bmr: higher lean body (muscles, mass, exercise, greater height/weight, male, pregnancy, lactation, growth, fever, elevated thyroid hormone levels, stimulants (caffines/tobacco) Excess energy stored in adipose tissue (adipocytes) Fat gained adipocytes increase in size and number. Lose weight adipocytes decrease in size only; number stay same. Ca(cid:374)ada"s e(cid:374)ergy i(cid:373)(cid:271)ala(cid:374)(cid:272)e eating more, moving less. Only 15% canadians meet new recommendations for physical activity: 150 minutes moderate/vigorous physical activity per week, 10 minute bouts.
