Health Sciences 3071A/B Lecture Notes - Lecture 10: Hypertension, Active Transport, Calorie
17 Dec 2016
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Why Sitting is the new Smoking
Physical and Biological determinants of health
• Sedentary behaviour causes disease
o Heart disease
o High blood pressure
▪ Etc
• Learning objectives
o Describe and differentiate Sedentary behaviour from inactivity
▪ Inactivity is 1.5 METs of less
▪ Sedentary has to be sitting or reclining or lying
o Understand the consequences of excessive sedentary behaviour
o Interpret and utilize Oen’s Eologial Model of sedentary ehaiour
▪ The domains
• Household
• Leisure
• Transportation
• Occupation
o Multiple environments within these domains
o Compose relevant and actionable solutions for reducing personal sedentary
behaviour
• What is sedentary behaviour
o Any waking behaviour that is
▪ Seated
▪ Lying
▪ Reclining
• Not stand essentially
• Must be awake
o When you are sleeping your body is in a different mode
▪ Less than or equal to 1.5 METs
• Our body burns this due to internal processes
o Anything else means movement and activity
o Light physical activity
▪ Daily activities
• Like walking
o Moderate and vigorous
▪ Meaningful
▪ Exercise
• What is inactivity
o Burning less than 1.5 METs
▪ But you can be standing
find more resources at oneclass.com
find more resources at oneclass.com
• How much do we sit?
o The average office worker sits for up to 6 hours a day according to Neuhaus
2014
o We sit everywhere
▪ It is comfortable
▪ Socially acceptable
▪ Based off transportation
• In a car or bus
o There are no immediate or tangible health risks to sitting
▪ Why is Sedentary Behaviour harmful?
o They are chronic
o They are invisible
• As soon as you sit
o Electrical activity in the leg muscle shuts off
o Calorie burning drops to 1 per minute
o Enzymes that help break down fat drop by 90%
• Are two hours of sitting
o Good cholesterol drops by 20%
• After 24 hours
o Insulin effectiveness drops 24% and risk of diabetes rises
o People with sitting jobs have twice the rate of
cardiovascular disease as people with standing jobs
▪ Also after you retire from a sedentary job you
are far more likely to stay sedentary
• As you get older it is more important
you sit less
• Effect of sitting is universal
o Regardless of
▪ Gender
▪ Age
▪ Physical activity levels
• This means if you are a fairly active person and did 150 minutes
of activity per day you are at the same risk of chronic disease as
someone who does not exercise at all
▪ BMI
• Active Couch Potato numbers
o 50% sitting at work
o 25% activities of daily living
o 6% leisure time
▪ Running, cycling, being active
o 19% other leisure time that is mostly sedentary
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Physical and biological determinants of health: sedentary behaviour causes disease, heart disease, high blood pressure, etc. Learning objectives: describe and differentiate sedentary behaviour from inactivity. Inactivity is 1. 5 mets of less: sedentary has to be sitting or reclining or lying, understand the consequences of excessive sedentary behaviour. Interpret and utilize o(cid:449)en"s e(cid:272)ologi(cid:272)al model of sedentary (cid:271)eha(cid:448)iour: the domains. Leisure: household, transportation, occupation, compose relevant and actionable solutions for reducing personal sedentary, multiple environments within these domains behaviour, what is sedentary behaviour, any waking behaviour that is, seated. Lying: reclining, not stand essentially, must be awake, when you are sleeping your body is in a different mode. Less than or equal to 1. 5 mets: our body burns this due to internal processes, anything else means movement and activity, light physical activity, daily activities. It is comfortable: socially acceptable, based off transportation. If the infrastructure has more parks and bike lanes: climate.
