Lecture 1

Question 1

What is the definition of physiology?

Answer 1

The science of life

The study of how cells, molecules and organs interact in a living being

The branch of biology dealing with the functions and activities of living organisms(physical and chemical processes)

Question 2

What is the definition of physical activity?

Answer 2

a complex set of behaviors that encompass any bodily movement produced by skeletal muscles that result in energy expenditure

Question 3

What is a useful fact about physical activity?

Answer 3

It is the the single strongest predictor of all-cause mortality

Question 4

Where does physical activity rank on the global scale as risk factor?

Answer 4

4th leading factor for mortality

Question 5

What is the definition of exercise?

Answer 5

a form of physical activity that is planned, structured and done to improve at least one aspect of physical fitness that is, strength, flexibility or aerobic endurance.
encompasses a wide variety of activities
is often associated with fitness maintenance or
improvement only

Question 6

What are the 3 criteria that physical activity is defined by?

Answer 6

Duration is the amount of time spent
participating in a physical activity session
Intensity is the rate of energy
expenditure
Frequency is the number of physical
activity sessions during a specific time
period (e.g. one week)

Question 7

What is the definition of exercise physiology?

Answer 7

The study of the effects of exercise on the
body.
Body’s responses and adaptations to
exercises
–Subcellular level to system level
–Acute (short term) to chronic (long term)
adaptations

Question 8

What are the 5 different types of physical activity?

Answer 8

• Aerobic/endurance activity
– Uses large muscles
– Increases HR and breathing frequency
• Anaerobic
– Intense activity of short duration
• Muscle-strengthening
– Improves strength, power and endurance of muscles
• Bone-strengthening
– Feet, legs and/or arms support body weight and muscles 
push against bones
• Stretching
– Helps improve one’s flexibility and joint mobility

Question 9

What is the definition of fitness?

Answer 9

a state in which people’s health characteristics and behaviours enhance
the quality of their lives.

Question 10

What are the 3 different types of fitness?

Answer 10

Physical fitness, Health related physical fitness, skill related physical fitness

Question 11

What are defining characteristics of each type of fitness?

Answer 11

Physical fitness-A set of physical attributes related to a person’s ability to
perform physical activity successfully, without undue strain and with a margin of
safety

Health related physical fitness-A physiological state of well-being that reduces the
risk of hypokinetic disease; a basis for participation in sports; and a vigor for the
tasks of daily living. Components include cardio-respiratory endurance, muscle strength endurance, flexibility, and body composition.

Skill related physical fitness-Common components of physical fitness (e.g.,
agility, balance, coordination, speed, power, reaction time) that enable participation in sports and other physical activities; also called performance or motor fitness