AETIOLOGY
BMI and cardiorespiratory fitness predicted mortality in older adults
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Dr X Sui
Correspondence to: Dr X Sui, University of South Carolina, Columbia, SC, USA; msui@gwm.sc.edu
STUDY QUESTION
In older adults, do measures of adiposity and cardiorespiratory fitness predict mortality?
STUDY DESIGN
prospective cohort study with mean follow-up of 12 years.
healthcare clinic in Dallas, Texas, USA.
2603 people 
60 years of age (mean 64 y, 80% men) who completed a maximal treadmill exercise test with 85% of age-predicted maximal heart rate and had body mass index (BMI) 18.5 kg/m2.
fitness (total treadmill time) and measures of adiposity (BMI, percentage of body fat, fat-free mass, and waist circumference).
all-cause mortality identified through the National Death Index and death certificates.
MAIN RESULTS
Risk of death decreased with increasing levels of fitness (table). BMI had a J-shaped association with mortality (table). People with abdominal obesity (waist circumference 88 cm in women and 102 cm in men) had increased mortality, but this did not differ from those with
Monash University, Melbourne, Victoria, Australia
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