Firefit Conference 2008 Firefit Conference 2008 ‘Fit for Service, Fit for the Future’ ‘Fit for Service, Fit for the Future’ Physiology of Ageing - and possible effects on firefighters Kevin Sykes Kevin Sykes Professor of Occupational Health & Professor of Occupational Health & Fitness Fitness Director Centre for Exercise & Nutrition Science University of Chester
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Firefit Conference 2008 ‘Fit for Service, Fit for the Future’ Kevin Sykes Professor of Occupational Health & Fitness Firefit Conference 2008 ‘Fit for Service,
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Firefit Conference 2008Firefit Conference 2008‘Fit for Service, Fit for the Future’‘Fit for Service, Fit for the Future’
Physiology of Ageing- and possible effects on firefighters
Kevin SykesKevin Sykes Professor of Occupational Health & FitnessProfessor of Occupational Health & Fitness
DirectorCentre for Exercise & Nutrition Science
University of Chester
“So, Mr Jones, how old are you?”
“32?”
If you didn’t know how old you are…….. ….how old would you think you are ?
Many of us are health-conscious
But many still take their health for granted….. … until they lose it!
Prevention is better than cure
We can now expect to live 10 years longer than in the 1950s
1950-2005
Increase in Life Expectancy
20
05
Females live 5yrslonger thanmales
UK Life Expectancy
• Females: Average 82yrsHighest 86yrs Kensington, Chelsea, E.Dorset
Lowest 70yrs Glasgow
• 75% of females will be alive after the age of 75• 50% of males will be alive after the age of 75
• Males: Average 77yrsHighest 81yrs Kensington, Chelsea, E.DorsetLowest 65yrs Glasgow
Aerobic Fitness & Ageing• Decrease in cardiac function: e.g. HR = 220-Age Cardiac Output Stroke Volume• Decrease in Circulatory capacity: e.g. Increase in peripheral resistance Less blood flow to active muscle• Decrease in muscle O2 uptake: e.g. Reduced a-vO2 diff Reduction in mitochondria & oxidative
enzymes• Reduced Respiratory function (FVC, FEV, RV, MaxVe-1)
VO2Max decreases by 10% per decade after 25-30yrs
HOWEVER……Fit 60yr old fitter than sedentary 20-30yr olds!
• Low aerobic fitness is more important precursor ofall-cause mortality than any of the other risk factors