Imapct of Sedentarism On Behaviour (lecture 4)

Question 1

Define physical inactivity

Answer 1

A behavioural pattern that reduces physical activity time.

The absence of moderate (3METS) to vigorous (8METS) activity

Less than 7500-10000 steps a day

Question 2

Define sedentarism

Answer 2

A behavioural pattern that reduces physical activity time.

Typically defined as sitting/lying behaviour (less than 1.5METS) in a waking state

Question 3

How many UK and US don’t get enough exercise?

Answer 3

80% and 90% respectively

Question 4

What did the work of Levine (2005) and Levine (2006) find?

Answer 4

Obese stand less and sit more (2.7,2H).

NEAT was higher for lean subjects and obese walk far less (3.5miles/day)

Question 5

What did Van see Ploeg (2012) find?

Answer 5

In order to decrease mortality, an individual must increase PA and decrease physical inactivity

Question 6

What did RISC study show?

Answer 6

That an increase in sedentary time reduced insulin sensitivity

Question 7

What have studies shown about the importance of moderate-vigorous PA?

Answer 7

Studies have shown that 20 days of bed rest decrease VO2 Max by 20%.

Also going from 10,000 to 1,500 steps/day decreased it by 7%