chapter 1: Understanding Physical Activity And Exercise

Question 1

Define physical activity

Answer 1

Any bodily movement produced by contracting skeletal muscles with a concomitant increase in energy expenditure

Question 2

Voluntary Muscle Contractions can be …

Answer 2

1) static: isometric contractions that produce no change in the affected joint angle
- muscle strength is gained in 1 position only which will limit the application of the strength
- strength gains will be lost quickly if not practiced daily

                                                    or

2) dynamic: isotonic contractions produce a change in the affected joint angle
- ex. Squat causing a change in knee angle
- ex. Pull-up resulting in a change in elbow angle

Question 3

Define dynamic movement

Answer 3

Allows muscle strength gains to occur across the full range of motion

• can better mimic daily activities or sporting movements
• displays of functional strength

Question 4

Define exercise training

Answer 4

• It can be a component of physical activity
• Exercise is more specific to an end goal and quantifiable in its def:
• Definition is any planned, structured, repetitive and purposeful activity that seeks to improve or maintain any component of fitness for life or sport

Question 5

Define physical fitness

Answer 5

• a set of attributes that people have or achieve that relates to the ability to perform physical activity