NTDT200 Lecture Notes - Lecture 16: Vo2 Max, Phosphocreatine, Exercise Intensity
10 Dec 2018
School
Department
Course
Professor
Document Summary
Physical activity includes exercise as well as daily living activities. Physical activity: any bodily movement produced by skeletal muscle that causes energy expenditure. Short term: helps people lose body fat, build muscle mass, physically fat. Long term: maintains healthy body weight, reduces risk of heart disease, stroke, type 2 diabetes, osteoporosis, and certain cancers, lowers risk of premature death, manages stress, anxiety, and depression. Promotes physical fitness (ability to perform moderate to vigorous activity without undue fatigue) Acsm recommends four types of physical exercise to promote health and prevent diseases. Resistance: increases muscle strength, body composition, bone health. Cardiorespiratory: increases the heart rate and use of oxygen. Flexibility: ability to move joints through whole span of movement. Energy to fuel working muscles comes from two main sources. Energy substrates provide fuel for working muscles, stored in chemical bonds. Bonds broken to release usable form of atp. Atp is produced in the body by seperate energy systems.
