FSCN 1012 Lecture Notes - Lecture 5: Adipose Tissue, Exercise Intensity, Skeletal Muscle

• School: UMN
• Department: Food Science and Nutrition
• Course: FSCN 1012
• Professor: Reneta Korczak

Document Summary

Basic definitions: energy: the capacity to do work, aerobic: oxygen is available tissue and physical activity (pa) is moderate to low intensity, ex. Jogging or distance swimming: anaerobic: oxygen is very limited and pa is intense, ex. Fuel for exercise: the fuel mixture that powers exercise generally depends on: Intensity: duration, the exerciser"s fitness status, the exerciser"s nutritional status. Energy sources for muscle use: adenosine tri-phosphate (atp) Immediately available: phosphocreatine (pcr, stored in small amounts in muscle cells, created from atp and creatine, can be used to re-form atp from adp. Energy sources for atp synthesis: sources of energy for atp synthesis include, liver and muscle glycogen, triacylglycerols (within adipose tissue and active muscle, amino acids within skeletal muscle donate carbon skeletons. Intermediate in duration: 5 to 10 minutes, ex. Middle-distance running, swimming, basketball: longer duration, requires a steady energy supply, ex. Marathon running, distance swimming or cycling, jogging, hiking, backpacking.