TAILIEUCHUNG - Reliability and Intensity of the Six-Minute Walk Test in Healthy Elderly Subjects

Potential negative consequences of early identification of cognitive impairment clearly exist. Labelling an individual as demented may affect his or her ability to obtain life or health insurance, and may influence attitudes towards the individual by health care professionals and others. The label of Alzheimer’s disease may cause prejudice and difficulty in gaining admission to some long-term facilities. The negative effects of labelling an older person as demented have not been studied systematically, although a small body of social science literature explores this important area. Negative attitudes have been identified among professionals and lay people | Reliability and Intensity of the Six-Minute Walk Test in Healthy Elderly Subjects GAELLE KERVIO1 FRANCOIS CARRE1 and NATHALIE S. VILLE2 IGroupe de Recherche Cardio-Vasculaire Universite Rennes 1 Rennes FRANCE and 2Laboratoire de Physiologie et de Biomecanique de L Exercice Musculaire Universite Rennes 2 Rennes FRANCE ABSTRACT KERVIO G. F. CARRE and N. S. VILLE. Reliability and Intensity of the Six-Minute Walk Test in Healthy Elderly Subjects. Med. Sci. Sports Exerc. Vol. 35 No. 1 pp. 169-174 2003. Purpose The 6-min walk test 6-MWT is an easy and validated field test generally used in patients to assess their physical capacity. We think that the 6-MWT could also be conducted in the same perspective in healthy subjects aged 60-70 yr. However little is known about the effect of the familiarization on the 6-MWT performance and the relative intensity of this test. The aims of this study were therefore to bring precision to the 6-MWT reliability and intensity in this population. Methods Over 3 d 12 subjects performed two maximal exercise tests on treadmill and five 6-MWT two in the morning and three in the afternoon with a portable metabolic measurement system Cosmed K4 Rome Italy . The distance walking speed oxygen uptake VO2 and heart rate HR values were measured during the 6-MWT. Results Distance walking speed and VO2 were only lower during the first two 6-MWT respectively P P and P . HR was reliable from the first 6-MWT and was higher during the tests performed in the afternoon P . The intensity of the 6-MWT corresponded to of the VO2max of the HRmax and of the HRreserve. Moreover it was higher than the ventilatory threshold in each subject P . Conclusion In healthy elderly subjects the 6-MWT represents a submaximal exercise but at almost 80 of the VO2max. To be exploitable two familiarization attempts are required to limit the learning effect. Finally the 6-MWT time of day must be taken into account when .

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