PA, Bones and Body Compensation Flashcards
What is the equation for BMI
BMI= ( Weight (kg))/(Height2 (m) )
In 2015, what number of males and females were overweight
7/10 males and 6/10 women
In 2015, what fraction of people were obese
1/4
Define fitness
A person’s ability to perform physical activities which require • Aerobic capacity • Endurance • Strength • Flexibility
Describe Lee 1999’s fat-fit findings
you at a similar risk of death if you are both fat and fit compared to normal and fit. Lean fitness is better than normal or obese fitness.
Define physical activity
any bodily movement produced, which results in energy expenditure above the basal level.
Activity guidelines for toddlers
o 180 minutes a day
o Minimised extended periods of sedentary behaviour
Activity guidelines for children
o Vigorous intensity 60 mins a day
o Several hours of activity
Activity guidelines for adults
o 150 minutes a week of moderate activity
o 75 minutes vigorous a week
o 2 muscle strengthening sessions
o Minimise sedentary behaviours
3 measurements of body fat
Skinfolds (subcutaneous)
DXA (xray)
Bodpod (air mass)
DXA can be used to record bone density via
the bone mineral content
Define T score
A comparison to reference data (e.g. sex and ethnicity
T score equation
(x-∓)/STD
• X = bone density
• += bone mineral density compared to reference
• STD of reference
Define Z score
population data
Z score equation
(x-∓)/σ
Sigma = population data
