TAILIEUCHUNG - Six minute walking distance in healthy elderly subjects

Among those above age 70, the average number of diseases that each person reports has increased in recent years (17). This increase is because people have survived a number of diseases that once would have been fatal, and they have lived to acquire additional conditions, both potentially fatal and nonfatal, such as arthritis. Thus, older people have more diseases, but less disability, than in the past. Inclusion of indicators of cognitive functioning in nationally representative surveys of the older population has allowed Freedman and colleagues (29) to estimate change in the prevalence of cognitive impairment during a five-year period during the mid 1990s. They estimate very significant reduction. | Eur Respir J 1999 14 270-274 Printed in UK - all rights reserved Copyright ERS Journals Ltd 1999 European Respiratory Journal ISSN 0903-1936 Six minute walking distance in healthy elderly subjects T. Troosters R. Gosselink M. Decramer Six minute walking distance in healthy elderly subjects. T. Troosters R. Gosselink M. Decramer. ERS Journals Ltd 1999. ABSTRACT The six minute walking distance 6MWD test is a commonly used test to estimate functional exercise capacity in patients with chronic diseases including chronic obstructive lung disease. Surprisingly no attempt has been made to establish normal values for the 6MWD. The aim of this study therefore was to evaluate the 6MWD in healthy elderly volunteers and to evaluate its determining factors. Fifty-one healthy subjects aged 50 85 yrs volunteered to participate in the trial. All subjects were free of diseases that could interfere with performance in a walking test. Tests were performed in a quiet 50-m long hospital corridor. Patients were encouraged every 30 s to continue walking as quickly as possible. Walking distance averaged 631 93 m and was 84 m greater in the male compared to female subjects p . The 6MWD showed significant correlations with age r p and height r p . Stepwise multiple regression analysis showed that age height sex and weight were independent contributors to the 6MWD in healthy subjects thus explaining 66 of the variability. It is concluded that the six minute walking distance can be predicted adequately using a clinically useful model in healthy elderly subjects. Its variability is explained largely by age sex height and weight. Results of the six minute walking distance may be interpreted more adequately if expressed as a percentage of the predicted value. Eur Respir J 1999 14 270-274. Respiratory Rehabilitation and Respiratory Division University Hospitals Katholieke Universiteit Leuven B-3000 Belgium and Faculty of Physical Education and Physiotherapy Katholieke .

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