Muscle volume as a predictor of maximum force generating ability in the plantar flexors post-stroke
ABSTRACT Introduction: Post‐stroke muscle weakness is commonly thought to be the result of a combination of decreased voluntary activation and decreased maximum force generating ability (MFGA). We assessed the ability of muscle volumes obtained using MRI to estimate the MFGA of the plantar flexor mu...
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| Veröffentlicht in: | Muscle & nerve 2013-12, Vol.48 (6), p.971-976 |
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| creator | Knarr, Brian A. Ramsay, John W. Buchanan, Thomas S. Higginson, Jill S. Binder-Macleod, Stuart A. |
| description | ABSTRACT
Introduction: Post‐stroke muscle weakness is commonly thought to be the result of a combination of decreased voluntary activation and decreased maximum force generating ability (MFGA). We assessed the ability of muscle volumes obtained using MRI to estimate the MFGA of the plantar flexor muscle group in individuals post‐stroke. Methods: MRI was used to measure muscle volume of the plantar flexor muscle group in 17 individuals with post‐stroke hemiparesis. A modified burst superimposition test was used to measure force of volitional contraction and predict the MFGA of the plantar flexors. Results: While muscle volume obtained by means of MRI provided information on the overall size of muscle, it overestimated the force generating ability of the paretic plantar flexors. Conclusions: Results suggest that MRI‐derived muscle volume underestimates the functional impairment in individuals post‐stroke. Interestingly, the central activation ratio had a strong relationship with the maximum volitional force of contraction. Muscle Nerve 48: 971–976, 2013 |
| doi_str_mv | 10.1002/mus.23835 |
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Introduction: Post‐stroke muscle weakness is commonly thought to be the result of a combination of decreased voluntary activation and decreased maximum force generating ability (MFGA). We assessed the ability of muscle volumes obtained using MRI to estimate the MFGA of the plantar flexor muscle group in individuals post‐stroke. Methods: MRI was used to measure muscle volume of the plantar flexor muscle group in 17 individuals with post‐stroke hemiparesis. A modified burst superimposition test was used to measure force of volitional contraction and predict the MFGA of the plantar flexors. Results: While muscle volume obtained by means of MRI provided information on the overall size of muscle, it overestimated the force generating ability of the paretic plantar flexors. Conclusions: Results suggest that MRI‐derived muscle volume underestimates the functional impairment in individuals post‐stroke. Interestingly, the central activation ratio had a strong relationship with the maximum volitional force of contraction. Muscle Nerve 48: 971–976, 2013</description><identifier>ISSN: 0148-639X</identifier><identifier>EISSN: 1097-4598</identifier><identifier>DOI: 10.1002/mus.23835</identifier><identifier>PMID: 23494851</identifier><identifier>CODEN: MUNEDE</identifier><language>eng</language><publisher>United States: Blackwell Publishing Ltd</publisher><subject>Aged ; electrical stimulation ; Electromyography ; Female ; Foot - innervation ; Humans ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Muscle Contraction - physiology ; muscle strength ; Muscle Strength - physiology ; Muscle Weakness - diagnosis ; Muscle Weakness - etiology ; Muscle, Skeletal - pathology ; Muscle, Skeletal - physiopathology ; plantar flexors ; Predictive Value of Tests ; Regression Analysis ; stroke ; Stroke - complications ; Weightlifting</subject><ispartof>Muscle & nerve, 2013-12, Vol.48 (6), p.971-976</ispartof><rights>Copyright © 2013 Wiley Periodicals, Inc.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5515-921f6e3a0407565620a16174af026bd354c2bd700d9e9e1932fd1e4a32f6fee3</citedby><cites>FETCH-LOGICAL-c5515-921f6e3a0407565620a16174af026bd354c2bd700d9e9e1932fd1e4a32f6fee3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fmus.23835$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fmus.23835$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>230,314,780,784,885,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23494851$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Knarr, Brian A.</creatorcontrib><creatorcontrib>Ramsay, John W.</creatorcontrib><creatorcontrib>Buchanan, Thomas S.</creatorcontrib><creatorcontrib>Higginson, Jill S.</creatorcontrib><creatorcontrib>Binder-Macleod, Stuart A.</creatorcontrib><title>Muscle volume as a predictor of maximum force generating ability in the plantar flexors post-stroke</title><title>Muscle & nerve</title><addtitle>Muscle Nerve</addtitle><description>ABSTRACT
Introduction: Post‐stroke muscle weakness is commonly thought to be the result of a combination of decreased voluntary activation and decreased maximum force generating ability (MFGA). We assessed the ability of muscle volumes obtained using MRI to estimate the MFGA of the plantar flexor muscle group in individuals post‐stroke. Methods: MRI was used to measure muscle volume of the plantar flexor muscle group in 17 individuals with post‐stroke hemiparesis. A modified burst superimposition test was used to measure force of volitional contraction and predict the MFGA of the plantar flexors. Results: While muscle volume obtained by means of MRI provided information on the overall size of muscle, it overestimated the force generating ability of the paretic plantar flexors. Conclusions: Results suggest that MRI‐derived muscle volume underestimates the functional impairment in individuals post‐stroke. Interestingly, the central activation ratio had a strong relationship with the maximum volitional force of contraction. Muscle Nerve 48: 971–976, 2013</description><subject>Aged</subject><subject>electrical stimulation</subject><subject>Electromyography</subject><subject>Female</subject><subject>Foot - innervation</subject><subject>Humans</subject><subject>Magnetic Resonance Imaging</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Muscle Contraction - physiology</subject><subject>muscle strength</subject><subject>Muscle Strength - physiology</subject><subject>Muscle Weakness - diagnosis</subject><subject>Muscle Weakness - etiology</subject><subject>Muscle, Skeletal - pathology</subject><subject>Muscle, Skeletal - physiopathology</subject><subject>plantar flexors</subject><subject>Predictive Value of Tests</subject><subject>Regression Analysis</subject><subject>stroke</subject><subject>Stroke - complications</subject><subject>Weightlifting</subject><issn>0148-639X</issn><issn>1097-4598</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1kUtv1DAUhS0EosPAgj-ALLGhi7R2_EiyQUJDKZWmRYLhITaWJ7meuk3iYDtl5t_Xw7QjisTm3sX97tE5Ogi9pOSIEpIfd2M4ylnJxCM0oaQqMi6q8jGaEMrLTLLqxwF6FsIVIYSWsniKDnLGK14KOkH1-RjqFvCNa8cOsA5Y48FDY-voPHYGd3ptu7HDxvka8Ap68DrafoX10rY2brDtcbwEPLS6j9pj08La-YAHF2IWonfX8Bw9MboN8OJuT9Hiw8li9jGbfzo9m72bZ7UQVGRVTo0EpgknhZBC5kRTSQuuDcnlsmGC1_myKQhpKqiAViw3DQWu05YGgE3R253sMC47aGroo9etGrzttN8op616eOntpVq5G8UZK_I0pujNnYB3v0YIUXU21NCmZODGoCiXlHGynVP0-h_0yo2-T-m2FEmCgolEHe6o2rsQPJi9GUrUtjmVmlN_mkvsq7_d78n7qhJwvAN-2xY2_1dS51-_3Etmuw8bIqz3H9pfK1kkh-r7xama8_eLn5-_zdSC3QIwULN1</recordid><startdate>201312</startdate><enddate>201312</enddate><creator>Knarr, Brian A.</creator><creator>Ramsay, John W.</creator><creator>Buchanan, Thomas S.</creator><creator>Higginson, Jill S.</creator><creator>Binder-Macleod, Stuart A.</creator><general>Blackwell Publishing Ltd</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7T5</scope><scope>7TK</scope><scope>7TM</scope><scope>7TS</scope><scope>7U7</scope><scope>7U9</scope><scope>C1K</scope><scope>H94</scope><scope>K9.</scope><scope>NAPCQ</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>201312</creationdate><title>Muscle volume as a predictor of maximum force generating ability in the plantar flexors post-stroke</title><author>Knarr, Brian A. ; Ramsay, John W. ; Buchanan, Thomas S. ; Higginson, Jill S. ; Binder-Macleod, Stuart A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5515-921f6e3a0407565620a16174af026bd354c2bd700d9e9e1932fd1e4a32f6fee3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Aged</topic><topic>electrical stimulation</topic><topic>Electromyography</topic><topic>Female</topic><topic>Foot - innervation</topic><topic>Humans</topic><topic>Magnetic Resonance Imaging</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Muscle Contraction - physiology</topic><topic>muscle strength</topic><topic>Muscle Strength - physiology</topic><topic>Muscle Weakness - diagnosis</topic><topic>Muscle Weakness - etiology</topic><topic>Muscle, Skeletal - pathology</topic><topic>Muscle, Skeletal - physiopathology</topic><topic>plantar flexors</topic><topic>Predictive Value of Tests</topic><topic>Regression Analysis</topic><topic>stroke</topic><topic>Stroke - complications</topic><topic>Weightlifting</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Knarr, Brian A.</creatorcontrib><creatorcontrib>Ramsay, John W.</creatorcontrib><creatorcontrib>Buchanan, Thomas S.</creatorcontrib><creatorcontrib>Higginson, Jill S.</creatorcontrib><creatorcontrib>Binder-Macleod, Stuart A.</creatorcontrib><collection>Istex</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Immunology Abstracts</collection><collection>Neurosciences Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Physical Education Index</collection><collection>Toxicology Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Premium</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Muscle & nerve</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Knarr, Brian A.</au><au>Ramsay, John W.</au><au>Buchanan, Thomas S.</au><au>Higginson, Jill S.</au><au>Binder-Macleod, Stuart A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Muscle volume as a predictor of maximum force generating ability in the plantar flexors post-stroke</atitle><jtitle>Muscle & nerve</jtitle><addtitle>Muscle Nerve</addtitle><date>2013-12</date><risdate>2013</risdate><volume>48</volume><issue>6</issue><spage>971</spage><epage>976</epage><pages>971-976</pages><issn>0148-639X</issn><eissn>1097-4598</eissn><coden>MUNEDE</coden><abstract>ABSTRACT
Introduction: Post‐stroke muscle weakness is commonly thought to be the result of a combination of decreased voluntary activation and decreased maximum force generating ability (MFGA). We assessed the ability of muscle volumes obtained using MRI to estimate the MFGA of the plantar flexor muscle group in individuals post‐stroke. Methods: MRI was used to measure muscle volume of the plantar flexor muscle group in 17 individuals with post‐stroke hemiparesis. A modified burst superimposition test was used to measure force of volitional contraction and predict the MFGA of the plantar flexors. Results: While muscle volume obtained by means of MRI provided information on the overall size of muscle, it overestimated the force generating ability of the paretic plantar flexors. Conclusions: Results suggest that MRI‐derived muscle volume underestimates the functional impairment in individuals post‐stroke. Interestingly, the central activation ratio had a strong relationship with the maximum volitional force of contraction. Muscle Nerve 48: 971–976, 2013</abstract><cop>United States</cop><pub>Blackwell Publishing Ltd</pub><pmid>23494851</pmid><doi>10.1002/mus.23835</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Aged electrical stimulation Electromyography Female Foot - innervation Humans Magnetic Resonance Imaging Male Middle Aged Muscle Contraction - physiology muscle strength Muscle Strength - physiology Muscle Weakness - diagnosis Muscle Weakness - etiology Muscle, Skeletal - pathology Muscle, Skeletal - physiopathology plantar flexors Predictive Value of Tests Regression Analysis stroke Stroke - complications Weightlifting |
| title | Muscle volume as a predictor of maximum force generating ability in the plantar flexors post-stroke |
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