fall 2007-lecture 6

fall 2007-lecture 6 - Body Composition and Health Lecture#6...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Body Composition and Health Lecture #6 September 13, 2007 Body Fat % Norms – – Fat mass (FM) Essential fat – – – Optimal range Storage Fat/Nonessential Males: 10­20% Females: 15­25% See table 4.8 Males = 3% Females = 12% Path to Obesity 1st Law of Thermodynamics – Energy balance Obesity = cumulative positive energy balance diff. between energy intake and energy expenditure – Genetic and environmental factors Obesity and Disease Risk ⇑ BF% ⇒ ⇑ risk for CVD ⇑ BF% ⇒ insulin resistance, ⇓ glucose tolerance ⇒ Type 2 Diabetes Obesity ⇒ 15­20% of deaths in US Weight Management – RMR – EMR – Thermogenic effect of food Ideal Body Weight Negative Caloric Balance Positive Caloric Balance TDEE Skender et al. study – Followed for 2 years – Diet + Exercise and Diet only group greatest weight loss at 1 year – Diet + Exercise maintained loss at 2 years 100 men and women + For optimal results – combine diet and exercise Weight Loss – – – – Healthy Weight Loss = 1­2 lbs/week 3500 kcal/week 500 kcal/day 250 kcal ⇑ energy expenditure 250 kcal ⇓ energy consumption – aerobic activity + resistance training ⇑ energy expenditure Behavior Modification Weight Loss Myths Spot Reduction Late Night Snacks Diet Pills Cellulite Creams Temperature­induced weight loss Unhealthy Weight Loss – Anorexia Nervosa – Bulimia Rapid Weight Loss Restricting and Fad Diets Eating Disorders Weight Gain – 500 kcal/day – Fat surplus? – Protein surplus? Positive Caloric Balance – 2500 kcal ⇒ synthesize 1 lb muscle – Rate of synthesis = 0.25 lb/week ⇑ caloric intake by 90 kcal/day Resistance training ⇑ sleep, ⇓ caffeine intake, etc. ...
View Full Document

This note was uploaded on 10/25/2010 for the course EXSC 203 taught by Professor Raney during the Spring '07 term at USC.

Ask a homework question - tutors are online