Document Detail


Reference Values for Cardiorespiratory Response and Fitness on the treadmill in a 20-85-year-old Population.
MedLine Citation:
PMID:  23287878     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
ABSTRACT BACKGROUND: Existing reference values for clinical exercise testing have been derived from small nonrandom samples, lacking women and older individuals and some with poor or no maximal end criteria. The objective was to study the cardiorespiratory response during maximal exercise in a representative predominant Caucasian sample of men and women. METHODS: Nine hundred four randomly sampled men and women, 20-85 years old, exercised on a treadmill to exhaustion. Oxygen uptake (VO2), heart rate (HR), blood pressure, blood lactate, and ventilatory variables were measured. RESULTS: Seven hundred fifty-nine participants met the criteria for an acceptable VO2max based on a respiratory exchange ratio (RER) ≥1.10 or a Borg score ≥17. In the 20-29-year age group, VO2max (mL∙kg-1∙min-1) was 40.3 (±7.1) in women and 48.6 (±9.6) in men. A linear decline (8% per decade) was observed after age 30 years in both sexes. HRmax decreased with age by ±6.3 beats∙min-1 per decade. The maximal oxygen pulse was 33% lower in women, and decreased significantly with age in both sexes by 5% and 3% per decade for women and men, respectively. Women's maximal ventilation was 66% that of men and decreased with age after 40-49 years in both sexes. Breathing reserve was higher and blood lactate was lower in women than in men. CONCLUSIONS: This study establishes reference values for VO2max (absolute, relative to body-and fat free weight), HRmax, oxygen pulse, blood pressure, ventilation, breathing reserve, RER, and blood lactate concentration during maximal exercise on treadmill in a large population.
Authors:
E Edvardsen; B H Hansen; I M Holme; S M Dyrstad; S A Anderssen
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-3
Journal Detail:
Title:  Chest     Volume:  -     ISSN:  1931-3543     ISO Abbreviation:  Chest     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0231335     Medline TA:  Chest     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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