Maximal aerobic capacity in ageing subjects: actual measurements versus predicted values
We evaluated the impact of selection of reference values on the categorisation of measured maximal oxygen consumption (V′O2peak) as “normal” or “abnormal” in an ageing population. We compared measured V′O2peak with predicted values and the lower limit of normal (LLN) calculated with five equations....
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2016-03-01
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doaj-9b0e625e94404566bf6caf67cacc97582020-11-24T22:35:43ZengEuropean Respiratory SocietyERJ Open Research2312-05412016-03-012110.1183/23120541.00068-201500068-2015Maximal aerobic capacity in ageing subjects: actual measurements versus predicted valuesCristina Pistea0Evelyne Lonsdorfer1Stéphane Doutreleau2Monique Oswald3Irina Enache4Anne Charloux5 Service de Physiologie et d'Explorations Fonctionnelles, Pôle de Pathologie Thoracique, Hôpitaux Universitaires de Strasbourg et Equipe d'Accueil 3072, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France Service de Physiologie et d'Explorations Fonctionnelles, Pôle de Pathologie Thoracique, Hôpitaux Universitaires de Strasbourg et Equipe d'Accueil 3072, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France Service de Physiologie et d'Explorations Fonctionnelles, Pôle de Pathologie Thoracique, Hôpitaux Universitaires de Strasbourg et Equipe d'Accueil 3072, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France Service de Physiologie et d'Explorations Fonctionnelles, Pôle de Pathologie Thoracique, Hôpitaux Universitaires de Strasbourg et Equipe d'Accueil 3072, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France Service de Physiologie et d'Explorations Fonctionnelles, Pôle de Pathologie Thoracique, Hôpitaux Universitaires de Strasbourg et Equipe d'Accueil 3072, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France Service de Physiologie et d'Explorations Fonctionnelles, Pôle de Pathologie Thoracique, Hôpitaux Universitaires de Strasbourg et Equipe d'Accueil 3072, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France We evaluated the impact of selection of reference values on the categorisation of measured maximal oxygen consumption (V′O2peak) as “normal” or “abnormal” in an ageing population. We compared measured V′O2peak with predicted values and the lower limit of normal (LLN) calculated with five equations. 99 (58 males and 41 females) disease-free subjects aged ≥70 years completed an incremental maximal exercise test on a cycle ergometer. Mean V′O2peak was 1.88 L·min−1 in men and 1.26 L·min−1 in women. V′O2peak ranged from 89% to 108% of predicted in men, and from 88% to 164% of predicted in women, depending on the reference equation used. The proportion of subjects below the LLN ranged from 5% to 14% in men and 0–22% in women, depending on the reference equation. The LLN was lacking in one study, and was unsuitable for women in another. Most LLNs ranged between 53% and 73% of predicted. Therefore, choosing an 80% cut-off leads to overestimation of the proportion of “abnormal” subjects. To conclude, the proportion of subjects aged ≥70 years with a “low” V′O2peak differs markedly according to the chosen reference equations. In clinical practice, it is still relevant to test a sample of healthy volunteers and select the reference equations that better characterise this sample.http://openres.ersjournals.com/content/2/1/00068-2015.full |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Cristina Pistea Evelyne Lonsdorfer Stéphane Doutreleau Monique Oswald Irina Enache Anne Charloux |
spellingShingle |
Cristina Pistea Evelyne Lonsdorfer Stéphane Doutreleau Monique Oswald Irina Enache Anne Charloux Maximal aerobic capacity in ageing subjects: actual measurements versus predicted values ERJ Open Research |
author_facet |
Cristina Pistea Evelyne Lonsdorfer Stéphane Doutreleau Monique Oswald Irina Enache Anne Charloux |
author_sort |
Cristina Pistea |
title |
Maximal aerobic capacity in ageing subjects: actual measurements versus predicted values |
title_short |
Maximal aerobic capacity in ageing subjects: actual measurements versus predicted values |
title_full |
Maximal aerobic capacity in ageing subjects: actual measurements versus predicted values |
title_fullStr |
Maximal aerobic capacity in ageing subjects: actual measurements versus predicted values |
title_full_unstemmed |
Maximal aerobic capacity in ageing subjects: actual measurements versus predicted values |
title_sort |
maximal aerobic capacity in ageing subjects: actual measurements versus predicted values |
publisher |
European Respiratory Society |
series |
ERJ Open Research |
issn |
2312-0541 |
publishDate |
2016-03-01 |
description |
We evaluated the impact of selection of reference values on the categorisation of measured maximal oxygen consumption (V′O2peak) as “normal” or “abnormal” in an ageing population. We compared measured V′O2peak with predicted values and the lower limit of normal (LLN) calculated with five equations. 99 (58 males and 41 females) disease-free subjects aged ≥70 years completed an incremental maximal exercise test on a cycle ergometer. Mean V′O2peak was 1.88 L·min−1 in men and 1.26 L·min−1 in women. V′O2peak ranged from 89% to 108% of predicted in men, and from 88% to 164% of predicted in women, depending on the reference equation used. The proportion of subjects below the LLN ranged from 5% to 14% in men and 0–22% in women, depending on the reference equation. The LLN was lacking in one study, and was unsuitable for women in another. Most LLNs ranged between 53% and 73% of predicted. Therefore, choosing an 80% cut-off leads to overestimation of the proportion of “abnormal” subjects. To conclude, the proportion of subjects aged ≥70 years with a “low” V′O2peak differs markedly according to the chosen reference equations. In clinical practice, it is still relevant to test a sample of healthy volunteers and select the reference equations that better characterise this sample. |
url |
http://openres.ersjournals.com/content/2/1/00068-2015.full |
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