| Energy cost of spontaneous walking in Parkinson's disease patients. | |
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MedLine Citation:
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PMID: 22042531 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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In healthy subjects, comfortable walking minimizes the energy cost (E (c)) of locomotion. In Parkinson's disease (PD) patients walking is slower than in healthy subjects: this may increase E (c). Our aims were to analyze gait and E (c) in PD patients during walking, particularly at self-selected speed, and the possible pathological, mechanical, and cardiorespiratory limitations. Fourteen mild-to-moderate PD and 14 control subjects were enrolled. Subjects underwent 5-min walking tests at two speeds: self-selected and as-fast-as-possible speeds. Cardiopulmonary and gait parameters (heart rate, ventilation, gas exchanges, step count) were recorded. Velocity was reduced in PD compared to control subjects at both speeds (P < 0.05), and PD patients had shorter strides (P < 0.05) at both speeds and reduced cadence (P = 0.01) at fastest speed. No significant difference was found in E (c) at self-selected (0.12 ± 0.04 versus 0.11 ± 0.02 mLO(2) kg(-1) m(-1) in PD and control subjects, respectively) and maximal (0.14 ± 0.03 versus 0.15 ± 0.02 mLO(2) kg(-1) m(-1) in PD and control subjects, respectively) speed. However, the E (c) increment from self-selected to fastest velocity was significantly lower (P = 0.02) in PD patients. PD patients failed to walk at a self-selected speed, which minimizes the E (c). This could be mainly due to the inability to develop a wider stride. Cardiorespiratory adaptation was not affected, except for the possible reduced cardiac adaptation observed in some (28%) cases. Presumably, rehabilitation procedures that improve flexibility and step length may help maintain walking ability. |
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Authors:
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Martina A Maggioni; Arsenio Veicsteinas; Susanna Rampichini; Emiliano Cè; Raffaello Nemni; Giulio Riboldazzi; Giampiero Merati |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-11-1 |
Journal Detail:
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Title: Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology Volume: - ISSN: 1590-3478 ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-11-1 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100959175 Medline TA: Neurol Sci Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Sport, Nutrition and Health Sciences, University of Milan, Via Giuseppe Colombo, 71, 20133, Milan, Italy, martina.maggioni@unimi.it. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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