Document Detail


How is walking speed related to muscle strength? A study of healthy persons and persons with late effects of polio.
MedLine Citation:
PMID:  15605327     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVES: To evaluate the relationship between walking speed and muscle strength in the lower extremities in healthy persons and in persons with late effects of polio and to compare the models for these relationships. DESIGN: Retrospective analysis. SETTING: University hospital department. PARTICIPANTS: An urban sample of 144 healthy men and women (age range, 40-79 y) and 234 (146 women, 88 men) subjects with late polio. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Muscle strength in the lower extremities was measured and combined into an index. Walking speed for spontaneous and maximal walking was measured. A nonlinear regression model was developed. RESULTS: Evidence was provided for the nonlinear relationship between walking speed and strength. A specific strength threshold could not be identified. The asymptote of this curve for maximal walking was 2.57 m/s in the healthy group and 2.02 m/s in the subjects with late effects of polio. A high body mass index (>25 kg/m2) lowered the asymptote. CONCLUSIONS: It is important to prevent strength decrease that approaches the critical level where a further reduction affects walking speed more evidently. The difference in the relationship between muscle strength and walking speed for the 2 groups studied may partly depend on biomechanic imbalance between muscle groups.
Authors:
Carin Willén; Katarina Stibrant Sunnerhagen; Claes Ekman; Gunnar Grimby
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Archives of physical medicine and rehabilitation     Volume:  85     ISSN:  0003-9993     ISO Abbreviation:  Arch Phys Med Rehabil     Publication Date:  2004 Dec 
Date Detail:
Created Date:  2004-12-17     Completed Date:  2005-01-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  2985158R     Medline TA:  Arch Phys Med Rehabil     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1923-8     Citation Subset:  AIM; IM    
Affiliation:
Institute of Neurosciences-Rehabilitation Medicine, Sahlgrenska Academy, University of Göteborg, Sweden.
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MeSH Terms
Descriptor/Qualifier:
Adult
Age Factors
Aged
Body Mass Index
Female
Humans
Lower Extremity / physiopathology
Male
Middle Aged
Muscle, Skeletal / physiopathology*
Poliomyelitis / physiopathology*
Regression Analysis
Retrospective Studies
Self-Help Devices
Sex Factors
Walking / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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