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Identification of elderly fallers by muscle strength measures

For efficient prevention of falls among older adults, individuals at a high risk of falling need to be identified. In this study, we searched for muscle strength measures that best identified those individuals who would fall after a gait perturbation and those who recovered their balance. Seventeen... Full description

Journal Title: European Journal of Applied Physiology 2008, Vol.102 (5), p.585-592
Main Author: Pijnappels, M.A.G.M
Other Authors: van der Burg, P.J , Reeves, N.D , van Dieen, J.H
Format: Electronic Article Electronic Article
Language: English
Subjects:
Publisher: Berlin/Heidelberg: Springer-Verlag
ID: ISSN: 1439-6319
Link: https://www.ncbi.nlm.nih.gov/pubmed/18071745
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recordid: cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_2226001
title: Identification of elderly fallers by muscle strength measures
format: Article
creator:
  • Pijnappels, M.A.G.M
  • van der Burg, P.J
  • Reeves, N.D
  • van Dieen, J.H
subjects:
  • Accidental Falls
  • Aged
  • Aged - physiology
  • Ageing
  • Analysis
  • Ankle - physiology
  • Biomedical and Life Sciences
  • Biomedicine
  • Classification
  • Environmental
  • Fall risk
  • Female
  • Gait - physiology
  • Hand - physiology
  • Hand Strength - physiology
  • Human Physiology
  • Humans
  • Isometric Contraction - physiology
  • Leg - physiology
  • Male
  • Models, Statistical
  • Muscle Strength - physiology
  • Occupational Health
  • Occupational Medicine/Industrial Medicine
  • Original
  • Original Article
  • Orthopedics
  • Perturbation
  • Physical capacity
  • Physical Fitness - physiology
  • Physiology (medical)
  • Public Health
  • Sports Medicine
ispartof: European Journal of Applied Physiology, 2008, Vol.102 (5), p.585-592
description: For efficient prevention of falls among older adults, individuals at a high risk of falling need to be identified. In this study, we searched for muscle strength measures that best identified those individuals who would fall after a gait perturbation and those who recovered their balance. Seventeen healthy older adults performed a range of muscle strength tests. We measured maximum and rate of development of ankle plantar flexion moment, knee extension moment and whole leg push-off force, as well as maximum jump height and hand grip strength. Subsequently, their capacity to regain balance after tripping over an obstacle was determined experimentally. Seven of the participants were classified as fallers based on the tripping outcome. Maximum isometric push-off force in a leg press apparatus was the best measure to identify the fallers, as cross-validation of a discriminant model with this variable resulted in the best classification (86% sensitivity and 90% specificity). Jump height and hand grip strength were strongly correlated to leg press force (r = 0.82 and 0.59, respectively) and can also be used to identify fallers, although with slightly lower specificity. These results indicate that whole leg extension strength is associated with the ability to prevent a fall after a gait perturbation and might be used to identify the elderly at risk of falling. © Springer-Verlag 2007.
language: eng
source:
identifier: ISSN: 1439-6319
fulltext: no_fulltext
issn:
  • 1439-6319
  • 1439-6327
url: Link


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descriptionFor efficient prevention of falls among older adults, individuals at a high risk of falling need to be identified. In this study, we searched for muscle strength measures that best identified those individuals who would fall after a gait perturbation and those who recovered their balance. Seventeen healthy older adults performed a range of muscle strength tests. We measured maximum and rate of development of ankle plantar flexion moment, knee extension moment and whole leg push-off force, as well as maximum jump height and hand grip strength. Subsequently, their capacity to regain balance after tripping over an obstacle was determined experimentally. Seven of the participants were classified as fallers based on the tripping outcome. Maximum isometric push-off force in a leg press apparatus was the best measure to identify the fallers, as cross-validation of a discriminant model with this variable resulted in the best classification (86% sensitivity and 90% specificity). Jump height and hand grip strength were strongly correlated to leg press force (r = 0.82 and 0.59, respectively) and can also be used to identify fallers, although with slightly lower specificity. These results indicate that whole leg extension strength is associated with the ability to prevent a fall after a gait perturbation and might be used to identify the elderly at risk of falling. © Springer-Verlag 2007.
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subjectAccidental Falls ; Aged ; Aged - physiology ; Ageing ; Analysis ; Ankle - physiology ; Biomedical and Life Sciences ; Biomedicine ; Classification ; Environmental ; Fall risk ; Female ; Gait - physiology ; Hand - physiology ; Hand Strength - physiology ; Human Physiology ; Humans ; Isometric Contraction - physiology ; Leg - physiology ; Male ; Models, Statistical ; Muscle Strength - physiology ; Occupational Health ; Occupational Medicine/Industrial Medicine ; Original ; Original Article ; Orthopedics ; Perturbation ; Physical capacity ; Physical Fitness - physiology ; Physiology (medical) ; Public Health ; Sports Medicine
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descriptionFor efficient prevention of falls among older adults, individuals at a high risk of falling need to be identified. In this study, we searched for muscle strength measures that best identified those individuals who would fall after a gait perturbation and those who recovered their balance. Seventeen healthy older adults performed a range of muscle strength tests. We measured maximum and rate of development of ankle plantar flexion moment, knee extension moment and whole leg push-off force, as well as maximum jump height and hand grip strength. Subsequently, their capacity to regain balance after tripping over an obstacle was determined experimentally. Seven of the participants were classified as fallers based on the tripping outcome. Maximum isometric push-off force in a leg press apparatus was the best measure to identify the fallers, as cross-validation of a discriminant model with this variable resulted in the best classification (86% sensitivity and 90% specificity). Jump height and hand grip strength were strongly correlated to leg press force (r = 0.82 and 0.59, respectively) and can also be used to identify fallers, although with slightly lower specificity. These results indicate that whole leg extension strength is associated with the ability to prevent a fall after a gait perturbation and might be used to identify the elderly at risk of falling. © Springer-Verlag 2007.
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8Classification
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authorPijnappels, M.A.G.M ; van der Burg, P.J ; Reeves, N.D ; van Dieen, J.H
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abstractFor efficient prevention of falls among older adults, individuals at a high risk of falling need to be identified. In this study, we searched for muscle strength measures that best identified those individuals who would fall after a gait perturbation and those who recovered their balance. Seventeen healthy older adults performed a range of muscle strength tests. We measured maximum and rate of development of ankle plantar flexion moment, knee extension moment and whole leg push-off force, as well as maximum jump height and hand grip strength. Subsequently, their capacity to regain balance after tripping over an obstacle was determined experimentally. Seven of the participants were classified as fallers based on the tripping outcome. Maximum isometric push-off force in a leg press apparatus was the best measure to identify the fallers, as cross-validation of a discriminant model with this variable resulted in the best classification (86% sensitivity and 90% specificity). Jump height and hand grip strength were strongly correlated to leg press force (r = 0.82 and 0.59, respectively) and can also be used to identify fallers, although with slightly lower specificity. These results indicate that whole leg extension strength is associated with the ability to prevent a fall after a gait perturbation and might be used to identify the elderly at risk of falling. © Springer-Verlag 2007.
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pmid18071745
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