NUTR 200 Lecture Notes - Lecture 25: Nutrient, Glycogen, Triglyceride
31 May 2018
School
Department
Course
Professor
NUTR 200 Nutrition for Today 5/23/2018
MJ Gunnarson, MS, RD 1
Nutrition and Physical Activity
Reading:
P 365-382
Chapter 16 - Itrodutio, Copoets…, Fueling., Measures…, Dietar Carohdrates…, U“
Gastis…, Feale Athlete Triad, Bod Buildig, Hdratig the Athlete, “ports “uppleets,
Phsial Fitess…
Objectives for today:
• Describe the energy systems used during physical activity
• Understand the recommendations for carbohydrates, fats, protein, and fluids for
physically-active people
• Describe nutrition strategies for pre-, during, and post-event nutrition support
Fueling Physical Activity
Intensity and duration of effort determine the fuel mixture that powers exercise
Energy Production during Exercise
find more resources at oneclass.com
find more resources at oneclass.com
NUTR 200 Nutrition for Today 5/23/2018
MJ Gunnarson, MS, RD 2
When exercise begins:
-ATP stored in muscle tissues will sustain activity for ~1-3 seconds
-Creatine Phosphate: can provide enough energy for another ~10sec of activity
ATP/creatine phosphate
ATP: fuels exercise of very short duration (1-3 seconds)
CP: fuels exercise of ~10 seconds
Glycolysis
[Glucose Pyruvate] Lactate
Energy yielding
Changes in Energy Metabolism during Exercise
Aerobic fuels
Glucose (from blood or glycogen) undergoes glycolysis – pyruvate processed in mitochondria
for energy production
Fatty acids from blood or tissue stores processed in mitochondria for energy production
Macronutrient Fuels
• Liver
✓ Recycled to glucose
• Other tissues
✓ Used to make energy
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Chapter 16 - i(cid:374)trodu(cid:272)tio(cid:374), co(cid:373)po(cid:374)e(cid:374)ts , fueling. , measures , dietar(cid:455) car(cid:271)oh(cid:455)drates , u . G(cid:455)(cid:373)(cid:374)asti(cid:272)s , fe(cid:373)ale athlete triad, bod(cid:455) buildi(cid:374)g, h(cid:455)drati(cid:374)g the athlete, ports upple(cid:373)e(cid:374)ts, Objectives for today: describe the energy systems used during physical activity, understand the recommendations for carbohydrates, fats, protein, and fluids for physically-active people, describe nutrition strategies for pre-, during, and post-event nutrition support. Intensity and duration of effort determine the fuel mixture that powers exercise. Atp stored in muscle tissues will sustain activity for ~1-3 seconds. Creatine phosphate: can provide enough energy for another ~10sec of activity. Atp: fuels exercise of very short duration (1-3 seconds) Glucose (from blood or glycogen) undergoes glycolysis pyruvate processed in mitochondria for energy production. Fatty acids from blood or tissue stores processed in mitochondria for energy production. Sources of energy for atp synthesis: carbohydrate, muscle and liver glycogen, blood glucose, fat, triglycerides within adipose tissue and active muscle, proteins, water/fluid.
