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Physiological cost of walking in those with CFS

Wednesday 28 October 2009

Disability & RehabilitationDisability & Rehabilitation, official journal of the International Society of Physical and Rehabilitation Medicine (ISPRM), has published the results of a study that looked at the manner of walking in people with ME/CFS:

Physiological cost of walking in those with chronic fatigue syndrome (CFS): A case-control study

Authors: Lorna Paul a;  Danny Rafferty b; Rebecca Marshal a

a Faculty of Medicine, Nursing and Health Care, University of Glasgow, Glasgow, UK
b School of Health and Social Care, Glasgow Caledonian University, Glasgow, UK

DOI: 10.1080/09638280802652015
Publication Frequency: 18 issues per year
Published in: Disability & Rehabilitation, Volume 31, Issue 19 January 2009, pages 1598 - 1604
Subject: Rehabilitation Medicine

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Purpose. To examine the physiological cost of walking in subjects with chronic fatigue syndrome (CFS) and a matched control group, walking at their preferred and at matched walking speeds.

Methods. Seventeen people with CFS and 17 matched-controls participated in this observational study of physiological cost during over-ground gait. Each subject walked for 5 min at their preferred walking speed (PWS). Controls then walked for 5 min at the same pace of their matched CFS subject. Gait speed and oxygen uptake, gross and net were measured and oxygen uptake was expressed per unit distance ambulated. CFS subjects completed the CFS-Activities and Participation Questionnaire (CFS-APQ).

Results. At PWS the CFS group walked at a slower velocity of 0.84 ± 0.21 m s-1 compared to controls with a velocity of 1.19 ± 0.13 m s-1 (p < 0.001). At PWS both gross and net oxygen uptake of CFS subjects was significantly less than controls (p = 0.023 and p = 0.025 respectively). At matched-velocity both gross and net physiological cost of gait was greater for CFS subjects than controls (p = 0.048 and p = 0.001, respectively).

Conclusion. The physiological cost of walking was significantly greater for people with CFS compared with healthy subjects. The reasons for these higher energy demands for walking in those with CFS have yet to be fully elucidated.

Keywords: Chronic fatigue syndrome; physiological cost; over-ground gait

The above originally appeared here.



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