Normal changes associated with ageingThese changes occur gradually , in the absence of disease and do not significantly affect the way an older person function . However, these changes will affect each older person differently depending on the person's past lifestyle choices . Older people may be more prone to respiratory tract infection due to these changes A decrease in the strength of respiratory accessory muscleA decline in vatal capacity -poor exercise tolerance A decrease in ciliary function An impaired cough mechanism
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