Week 2- Physical Activity

Question 1

Sedentary

Answer 1

A class of behaviours characterised by little physical movement + low energy expenditure

Question 2

Physical Activity

Answer 2

Any bodily movement produced by skeletal muscles that requires energy expenditure

Question 3

Exercise

Answer 3

Activity requiring physical effort, carried out to improve health/fitness

Question 4

Physical Fitness

Answer 4

A set of attributes people have or receive / The ability to carry out daily tasks with vigor/alertness, w/o undue fatigue

Question 5

Benefits of PA

Answer 5

Increased CV fitness, increased bone density, decreased risk for CV disease, decreased mortality risk

Question 6

Global burden of disease study (PA & disease effects)

Answer 6

Better results in CV (ischaemic stroke, heart disease) following w/ cancer/diabetes
- Even just a small amount of PA can help to decrease risk for disease

Question 7

Sedentary affect on bone health

Answer 7

High levels -> rapid increase in bone resorption (loss of bone mass) -> reduced bone mineral content & increased risk of osteoporosis

Question 8

Sedentary affect on metabolic health

Answer 8

LPL production is suppressed -> reduction in triglyceride breakdown -> elevated circulatory trigly.

• Elevated blood glucose levels b/c reproduction in breakdown of glucose (diabetes)
• increased circulating trig = hardening of arteries/ thickening of walls.

Question 9

PA guidelines for ages 5-17

Answer 9

• 60 min. of mod -> vig daily (aerobic)
• Vigorous, muscle/bone strength 3 days/week
• Replace sedentary w/ more activity

Question 10

PA guidelines for ages 18-64

Answer 10

Active on most, preferable all days of the week.

• Each week: 150-300 min. of moderate OR 75 to 150 of vigorous OR a combo
• Muscle strength @ least 2 days/week

Question 11

PA guidelines for 65+

Answer 11

30 min. moderate on most or all days

- Incorporate fitness, strength, balance, + flexibility.

Question 12

ActivPal

Answer 12

(Free living daily activities)

- Captures the primary activities of lying, sitting, standing, stepping, + cycling every second of the day.

Question 13

Actigraph

Answer 13

Monitors human rest/activity cycles + is used to study sleep/wake patterns.

Question 14

Objective measures of intensity

Answer 14

METs/ HR max/ HRR (max hr-rest) / VO2 max

Question 15

Subjective measures of intensity

Answer 15

RPE

Question 16

METs

Answer 16

Metabolic equivalent of risk
-Ratio of working vs. resting metabolic rate
~ 4 MET = Moderate, 8 MET= vigorous

Question 17

Relative vs. absolute intensity

Answer 17

• Relative: Specific to your abilities (i.e. VO2 max)

- Absolute: METs