Lipid Metabolism During Exercise A substantial portion of energy production during prolonged light or moderate exercise comes from fatty acid oxidation.

Slides:

Advertisements

Similar presentations

CHRONIC ADAPTATIONS TO TRAINING

Advertisements

Fat Intake and Athletic Performance

What is Oxygen Uptake? What is VO 2 Max? OXYGEN UPTAKE - VO 2 amount of oxygen consumed per unit of time (usually 1 minute) expressed as VO 2 mean value.

Energy Systems Adaptations to Training

TRAINING ADAPTATIONS Lect. II.

Chapter 4 Exercise Metabolism.

Nutritional Recommendations for the Physically Active Person Chapter 7 Part 2.

Scott K. Powers Edward T. Howley Theory and Application to Fitness and Performance SEVENTH EDITION Chapter Copyright ©2009 The McGraw-Hill Companies, Inc.

Exercise Metabolism.

Chapter 4 Exercise Metabolism

Energy Transfer During Exercise

So what does Training really do?. You need to Eat About 40% of potential energy in food is transferred to ATP The rest is lost at heat This will happen.

Exercise Metabolism. The use of oxygen by cells is called oxygen uptake (VO 2 ). Oxygen uptake rises rapidly during the first minute of exercise. Between.

Protein and Amino Acid Metabolism

Metabolism of the whole organism Metabolic profiles of organs Metabolic conditions Blood glucose levels: 90 mg/dL Fuel reserves glucose triacylglycerols.

Glucose Homeostasis  brain has high consumption of glucose –uses ~20% of RMR –1° fuel for energy  during exercise, working muscle competes with brain.

Metabolic Review Questions EXS 558 October 5, 2005.

Chapter 5 Hormonal Responses to Exercise

Fats as ergogens. Fat bad, Carbohydrate good Traditionally fat as an ingested fuel source during exercise has been considered taboo Conversely, the ability.

Hormonal control and responses

Exercise Metabolism. The use of oxygen by cells is called oxygen uptake (VO 2 ). Oxygen uptake rises rapidly during the first minute of exercise. Between.

Exercise Physiology MPB 326

CONVERSION OF FOOD TO ENERGY Week 12. What you need to know… What happens when CHO break down? How are CHO used? What is the glycemic index? High GI &

Sports med 2. How Our Bodies Use Food as Fuel  It takes hours to stock/restock the energy your muscles need!  Digestion Liquefied food is sent.

Illinois State University Metabolic Adaptations to Training Chapter 5 u Aerobic training: – increases number of capillaries per muscle fiber –increases.

Childhood Overweight: Nutrition and Physical Activity Interventions Susan Algert.

Macronutrient Metabolism in Exercise and Training

Macronutrient Metabolism in Exercise and Training

Exercise… Michael Heidkamp Clinical Exercise Physiologist Advocate Weight Management September 26 th, 2014 What is it?

Brooks ch 9 p ; –Some small sections already covered Outline Maintenance of Blood Glucose during exercise –Feed forward Control - SNS –Feed.

Endocrine Block Glucose Homeostasis Dr. Usman Ghani.

Integration of Metabolism. Insulin regulation Glucagon regulation Metabolic Regulation in the Fed State Insulin stimulation: Insulin stimulation: Glucose,

CHO metabolism during prolonged exercise (~72% VO 2max ) to exhaustion w/ and w/out CHO feedings (every 20 min) Coyle et al., JAP, 1986.

Illinois State University Hormonal Regulation of Exercise Chapter 21 and 22.

ENERGY SYSTEMS YEAR 13 Physical Education. By the end of today you will Be able to:  Understand and explain how ATP is used to create energy  Explain.

Energy Systems for Exercise Energy Sources From Food: – CHO = 4 kcal – Fat = 9 kcal – Protein = 4 kcal For Exercise: ATP  ADP + P + energy (for muscle.

Glucose Homeostasis By Dr. Sumbul Fatma.

Section A: Exercise and Sport Physiology 4. Energy continuum.

Training Adaptations. LIVER SKELETAL MUSCLE TISSUE Adrenal Gland Adipocytes Mitochondria.

Lipolysis. Largest storage form of energy Provides energy at the slowest rate Stored: –adipose tissue –muscle –Brain, CNS, abdomen, etc. Use of lipids.

Metabolic Benefits of Physical Activity Richard P. Troiano, Ph.D. Second Forum on NCD Prevention and Healthy Lifestyles Promotion «For Healthy Life»

Scott K. Powers Edward T. Howley Theory and Application to Fitness and Performance SEVENTH EDITION Chapter Copyright ©2009 The McGraw-Hill Companies, Inc.

Substrate Breakdown The free Energy of oxidation of a food is the amount of energy liberated by the complete oxidation of the food.

LIPID METABOLISM. Recall the structures of storage lipids.

GLYCAEMIC INDEX IN SPORT NUTRITION: METABOLIC RESPONSES AND PHYSICAL PERFORMANCE Sareena Hanim Hamzah, PhD BSc (Mal), MMedSci, PhD (Glasgow) Deputy Director.

Oxygen Consumption and Excess Postexercise Oxygen Consumption Andrew Nasr Meyer Naidas Aaron Salazar Kevin Shreffler.

Strength Endurance Training Circuit Training. Training Circuit Training Exercises Bicep Curls Medicine ball work Press ups/Sit ups Sets 3-5 sets of 10+

Aerobic and anaerobic pathways – an introduction to the energy systems Text Reference 1.Nelson Physical Education VCE Units 1&2 – Chapter 3.

Chapter 4 Exercise Metabolism

Fitness Training Wellness 10 Ms. Howe.  Functional capacity: improved cardiac ability to accomplish common tasks  Sustainable endurance: improved ability.

KIN 392/393 Physiology of Exercise Dr. Kraemer Slides for Chapter 3/4.

Ex Nutr c2-fuel source1 Michael Phelp’s diet 193 cm, 85 kg, 8% body fat Very high metabolic rate Burning more calorie sitting than most people burn walking.

Exercise and Metabolism How fit are you?. Rest to Exercise What changes must take place in skeletal muscle at the beginning of exercise to provide the.

Maggie Binkley IDEA World Fitness Convention Los Angeles, California August 4-9 th.

Adaptations to chronic endurance training: increase capillary density increase oxidative enzymes increase mitochondrial density.

Chapter 5: Hormonal Responses to Exercise EXERCISE PHYSIOLOGY Theory and Application to Fitness and Performance, 5 th edition Scott K. Powers & Edward.

Sports med 2 Nutrient Timing.

Endocrine Block Glucose Homeostasis Dr. Usman Ghani.

Chapter 4 Exercise Metabolism

Chapter 4: Exercise Metabolism

Glucose Homeostasis By Dr. Sumbul Fatma.

Insulin action is reduced in obesity

Fitness Training.

Metabolism of the whole organism Metabolic profiles of organs Metabolic conditions Blood glucose levels: 90 mg/dL Fuel reserves glucose triacylglycerols.

Energy Transfer in the Body

Metabolic Flexibility in Health and Disease

Exercise Has a Bone to Pick with Skeletal Muscle

Endocrine system Module 4- Training.

Metabolic Flexibility in Health and Disease

Protein and Amino Acid Metabolism

Presentation transcript:

Lipid Metabolism During Exercise A substantial portion of energy production during prolonged light or moderate exercise comes from fatty acid oxidation in the muscles –The increased energy requirement of sustained low to moderate intensity exercise increases lipolysis with rise in FA mobilization and the uptake and oxidation of NEFA. –High intensity exercise results in a decreased FA utilization and more reliance on CHO sources

Low to moderate intensity exercise is dependent on fat utilization As intensity increases, theres less dependence on fat and more on CHO

Optimal Intensity The increased energy requirement of sustained moderate intensity exercise induces an increase in lipolysis with a four to tenfold increase in FA mobilization –40-70% VO2max (Ahlborg et al., 1974)

Lipid Metabolism During Recovery Moderate to high intensity exercise lead to lipid utilization during recovery when energy expenditure is matched.(Kuo, 2005) - resynthesis of glycogen during recovery - increase in lipid oxidation for energy, while sparing CHO to restore glucose homeostasis and glycogen repletion.

Effects of Resistence Training on Lipolysis during Subsequent Submaximal Exercise Fat metabolism during submaximal exercise is strongly effected by prior resistance exercise –Enhanced Fat availability –RE20 vs. RE120

Repeated bouts of aerobic exercise Markedly higher lipid mobilization during repeated exercise bout –Enhanced lipolyitic response in Ex2 –Epinephrine & Norepinephrine –Insulin