Loading…
Changes in mechanical properties of human plantar flexor muscles in ageing
Changes in contractile and elastic properties of human plantar flexor muscles in ageing, were investigated in 12 young (19–24 years, YG) and 11 old (61–74 year, OG) men. Maximal isometric and concentric voluntary torques, at several angular velocities, were measured to construct torque-angular veloc...
Saved in:
| Published in: | Experimental gerontology 2004-03, Vol.39 (3), p.349-358 |
|---|---|
| Main Authors: | , , , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| cited_by | cdi_FETCH-LOGICAL-c355t-96b1694217db17a6adebccc2a1c3a7c3763aae7a950ffd0ee48f99e8c0066e0b3 |
|---|---|
| cites | cdi_FETCH-LOGICAL-c355t-96b1694217db17a6adebccc2a1c3a7c3763aae7a950ffd0ee48f99e8c0066e0b3 |
| container_end_page | 358 |
| container_issue | 3 |
| container_start_page | 349 |
| container_title | Experimental gerontology |
| container_volume | 39 |
| creator | Ochala, Julien Lambertz, Daniel Pousson, Michel Goubel, Francis Hoecke, Jacques Van |
| description | Changes in contractile and elastic properties of human plantar flexor muscles in ageing, were investigated in 12 young (19–24 years, YG) and 11 old (61–74 year, OG) men. Maximal isometric and concentric voluntary torques, at several angular velocities, were measured to construct torque-angular velocity relationship. This led to the calculation of an index of maximal shorting velocity (
VI
max) at low torque. Two methods were then used to calculate musculotendinous (MT, quick-release movements) and musculoarticular (MA, sinusoidal perturbations) stiffness. In both cases, stiffness was linearly related to torque, leading to the calculation of a stiffness index (SI) as the slope of the stiffness-torque relationship: SI
MT and SI
MA, respectively. MA stiffness under passive conditions (
K
p) was also determined. Surface electromyograms were useful to control agonist and antagonist myoelectrical activities. As expected, maximal isometric (
P |
| doi_str_mv | 10.1016/j.exger.2003.11.004 |
| format | article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_71765595</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0531556503003000</els_id><sourcerecordid>71765595</sourcerecordid><originalsourceid>FETCH-LOGICAL-c355t-96b1694217db17a6adebccc2a1c3a7c3763aae7a950ffd0ee48f99e8c0066e0b3</originalsourceid><addsrcrecordid>eNp9kE1LxDAQhoMouq7-AkF68taaaZq0PXiQxU8WvOg5pOm0m6VfJq2s_96sXfDmaRjmfWfeeQi5AhoBBXG7jXBXo41iSlkEEFGaHJEFZCkLRQb8mCwoZxByLvgZOXduSykVMYNTcgacMsHyZEFeVxvV1egC0wUtat8YrZpgsP2AdjR-0FfBZmpVFwyN6kZlg6rBXW-DdnK6mY2qRtPVF-SkUo3Dy0Ndko_Hh_fVc7h-e3pZ3a9DzTgfw1wUIPIkhrQsIFVClVhorWMFmqlUs1QwpTBVOadVVVLEJKvyHDPt0wukBVuSm3mvD_k5oRtla5zGxsfDfnIyhVRwnnMvZLNQ2945i5UcrGmV_ZZA5R6h3MpfhHKPUAJIj9C7rg_rp6LF8s9zYOYFd7MA_ZNfxtudNthpLI1FPcqyN_8e-AGoAIQ_</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>71765595</pqid></control><display><type>article</type><title>Changes in mechanical properties of human plantar flexor muscles in ageing</title><source>ScienceDirect Freedom Collection</source><creator>Ochala, Julien ; Lambertz, Daniel ; Pousson, Michel ; Goubel, Francis ; Hoecke, Jacques Van</creator><creatorcontrib>Ochala, Julien ; Lambertz, Daniel ; Pousson, Michel ; Goubel, Francis ; Hoecke, Jacques Van</creatorcontrib><description>Changes in contractile and elastic properties of human plantar flexor muscles in ageing, were investigated in 12 young (19–24 years, YG) and 11 old (61–74 year, OG) men. Maximal isometric and concentric voluntary torques, at several angular velocities, were measured to construct torque-angular velocity relationship. This led to the calculation of an index of maximal shorting velocity (
VI
max) at low torque. Two methods were then used to calculate musculotendinous (MT, quick-release movements) and musculoarticular (MA, sinusoidal perturbations) stiffness. In both cases, stiffness was linearly related to torque, leading to the calculation of a stiffness index (SI) as the slope of the stiffness-torque relationship: SI
MT and SI
MA, respectively. MA stiffness under passive conditions (
K
p) was also determined. Surface electromyograms were useful to control agonist and antagonist myoelectrical activities. As expected, maximal isometric (
P<0.05) and concentric torques (
P<0.05), as well as
VI
max(
P<0.05) were lower in OG compared to YG. SI
MT values were higher for OG compared to YG (
P<0.05), leading to a mean difference of 55%, whereas SI
MA and
K
p were not significantly different between the two groups. Thus, older men were weaker and exhibited higher SI
MT values. These impairments seem to be principally due to muscular atrophy and modifications in both muscle fibre-type distribution and fibre composition, in ageing. Invariance of SI
MA and
K
p would suggest an adaptive mechanism in articular structures to avoid the continuous integration of the ankle joint stiffness by the central nervous system, what may simplify most daily motor tasks.</description><identifier>ISSN: 0531-5565</identifier><identifier>EISSN: 1873-6815</identifier><identifier>DOI: 10.1016/j.exger.2003.11.004</identifier><identifier>PMID: 15036394</identifier><language>eng</language><publisher>England: Elsevier Inc</publisher><subject>Adult ; Aged ; Ageing ; Aging - physiology ; Ankle Joint - physiology ; Contractility ; Elasticity ; Electromyography ; Humans ; Joint stiffness ; Male ; Middle Aged ; Muscle Contraction - physiology ; Muscle, Skeletal - physiology ; Musculotendinous stiffness</subject><ispartof>Experimental gerontology, 2004-03, Vol.39 (3), p.349-358</ispartof><rights>2004 Elsevier Inc.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c355t-96b1694217db17a6adebccc2a1c3a7c3763aae7a950ffd0ee48f99e8c0066e0b3</citedby><cites>FETCH-LOGICAL-c355t-96b1694217db17a6adebccc2a1c3a7c3763aae7a950ffd0ee48f99e8c0066e0b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,786,790,27957,27958</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/15036394$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Ochala, Julien</creatorcontrib><creatorcontrib>Lambertz, Daniel</creatorcontrib><creatorcontrib>Pousson, Michel</creatorcontrib><creatorcontrib>Goubel, Francis</creatorcontrib><creatorcontrib>Hoecke, Jacques Van</creatorcontrib><title>Changes in mechanical properties of human plantar flexor muscles in ageing</title><title>Experimental gerontology</title><addtitle>Exp Gerontol</addtitle><description>Changes in contractile and elastic properties of human plantar flexor muscles in ageing, were investigated in 12 young (19–24 years, YG) and 11 old (61–74 year, OG) men. Maximal isometric and concentric voluntary torques, at several angular velocities, were measured to construct torque-angular velocity relationship. This led to the calculation of an index of maximal shorting velocity (
VI
max) at low torque. Two methods were then used to calculate musculotendinous (MT, quick-release movements) and musculoarticular (MA, sinusoidal perturbations) stiffness. In both cases, stiffness was linearly related to torque, leading to the calculation of a stiffness index (SI) as the slope of the stiffness-torque relationship: SI
MT and SI
MA, respectively. MA stiffness under passive conditions (
K
p) was also determined. Surface electromyograms were useful to control agonist and antagonist myoelectrical activities. As expected, maximal isometric (
P<0.05) and concentric torques (
P<0.05), as well as
VI
max(
P<0.05) were lower in OG compared to YG. SI
MT values were higher for OG compared to YG (
P<0.05), leading to a mean difference of 55%, whereas SI
MA and
K
p were not significantly different between the two groups. Thus, older men were weaker and exhibited higher SI
MT values. These impairments seem to be principally due to muscular atrophy and modifications in both muscle fibre-type distribution and fibre composition, in ageing. Invariance of SI
MA and
K
p would suggest an adaptive mechanism in articular structures to avoid the continuous integration of the ankle joint stiffness by the central nervous system, what may simplify most daily motor tasks.</description><subject>Adult</subject><subject>Aged</subject><subject>Ageing</subject><subject>Aging - physiology</subject><subject>Ankle Joint - physiology</subject><subject>Contractility</subject><subject>Elasticity</subject><subject>Electromyography</subject><subject>Humans</subject><subject>Joint stiffness</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Muscle Contraction - physiology</subject><subject>Muscle, Skeletal - physiology</subject><subject>Musculotendinous stiffness</subject><issn>0531-5565</issn><issn>1873-6815</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LxDAQhoMouq7-AkF68taaaZq0PXiQxU8WvOg5pOm0m6VfJq2s_96sXfDmaRjmfWfeeQi5AhoBBXG7jXBXo41iSlkEEFGaHJEFZCkLRQb8mCwoZxByLvgZOXduSykVMYNTcgacMsHyZEFeVxvV1egC0wUtat8YrZpgsP2AdjR-0FfBZmpVFwyN6kZlg6rBXW-DdnK6mY2qRtPVF-SkUo3Dy0Ndko_Hh_fVc7h-e3pZ3a9DzTgfw1wUIPIkhrQsIFVClVhorWMFmqlUs1QwpTBVOadVVVLEJKvyHDPt0wukBVuSm3mvD_k5oRtla5zGxsfDfnIyhVRwnnMvZLNQ2945i5UcrGmV_ZZA5R6h3MpfhHKPUAJIj9C7rg_rp6LF8s9zYOYFd7MA_ZNfxtudNthpLI1FPcqyN_8e-AGoAIQ_</recordid><startdate>20040301</startdate><enddate>20040301</enddate><creator>Ochala, Julien</creator><creator>Lambertz, Daniel</creator><creator>Pousson, Michel</creator><creator>Goubel, Francis</creator><creator>Hoecke, Jacques Van</creator><general>Elsevier Inc</general><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>7X8</scope></search><sort><creationdate>20040301</creationdate><title>Changes in mechanical properties of human plantar flexor muscles in ageing</title><author>Ochala, Julien ; Lambertz, Daniel ; Pousson, Michel ; Goubel, Francis ; Hoecke, Jacques Van</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c355t-96b1694217db17a6adebccc2a1c3a7c3763aae7a950ffd0ee48f99e8c0066e0b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Adult</topic><topic>Aged</topic><topic>Ageing</topic><topic>Aging - physiology</topic><topic>Ankle Joint - physiology</topic><topic>Contractility</topic><topic>Elasticity</topic><topic>Electromyography</topic><topic>Humans</topic><topic>Joint stiffness</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Muscle Contraction - physiology</topic><topic>Muscle, Skeletal - physiology</topic><topic>Musculotendinous stiffness</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ochala, Julien</creatorcontrib><creatorcontrib>Lambertz, Daniel</creatorcontrib><creatorcontrib>Pousson, Michel</creatorcontrib><creatorcontrib>Goubel, Francis</creatorcontrib><creatorcontrib>Hoecke, Jacques Van</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Experimental gerontology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ochala, Julien</au><au>Lambertz, Daniel</au><au>Pousson, Michel</au><au>Goubel, Francis</au><au>Hoecke, Jacques Van</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Changes in mechanical properties of human plantar flexor muscles in ageing</atitle><jtitle>Experimental gerontology</jtitle><addtitle>Exp Gerontol</addtitle><date>2004-03-01</date><risdate>2004</risdate><volume>39</volume><issue>3</issue><spage>349</spage><epage>358</epage><pages>349-358</pages><issn>0531-5565</issn><eissn>1873-6815</eissn><notes>ObjectType-Article-1</notes><notes>SourceType-Scholarly Journals-1</notes><notes>ObjectType-Feature-2</notes><notes>content type line 23</notes><abstract>Changes in contractile and elastic properties of human plantar flexor muscles in ageing, were investigated in 12 young (19–24 years, YG) and 11 old (61–74 year, OG) men. Maximal isometric and concentric voluntary torques, at several angular velocities, were measured to construct torque-angular velocity relationship. This led to the calculation of an index of maximal shorting velocity (
VI
max) at low torque. Two methods were then used to calculate musculotendinous (MT, quick-release movements) and musculoarticular (MA, sinusoidal perturbations) stiffness. In both cases, stiffness was linearly related to torque, leading to the calculation of a stiffness index (SI) as the slope of the stiffness-torque relationship: SI
MT and SI
MA, respectively. MA stiffness under passive conditions (
K
p) was also determined. Surface electromyograms were useful to control agonist and antagonist myoelectrical activities. As expected, maximal isometric (
P<0.05) and concentric torques (
P<0.05), as well as
VI
max(
P<0.05) were lower in OG compared to YG. SI
MT values were higher for OG compared to YG (
P<0.05), leading to a mean difference of 55%, whereas SI
MA and
K
p were not significantly different between the two groups. Thus, older men were weaker and exhibited higher SI
MT values. These impairments seem to be principally due to muscular atrophy and modifications in both muscle fibre-type distribution and fibre composition, in ageing. Invariance of SI
MA and
K
p would suggest an adaptive mechanism in articular structures to avoid the continuous integration of the ankle joint stiffness by the central nervous system, what may simplify most daily motor tasks.</abstract><cop>England</cop><pub>Elsevier Inc</pub><pmid>15036394</pmid><doi>10.1016/j.exger.2003.11.004</doi><tpages>10</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0531-5565 |
| ispartof | Experimental gerontology, 2004-03, Vol.39 (3), p.349-358 |
| issn | 0531-5565 1873-6815 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_71765595 |
| source | ScienceDirect Freedom Collection |
| subjects | Adult Aged Ageing Aging - physiology Ankle Joint - physiology Contractility Elasticity Electromyography Humans Joint stiffness Male Middle Aged Muscle Contraction - physiology Muscle, Skeletal - physiology Musculotendinous stiffness |
| title | Changes in mechanical properties of human plantar flexor muscles in ageing |
| url | http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-09-21T14%3A05%3A53IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Changes%20in%20mechanical%20properties%20of%20human%20plantar%20flexor%20muscles%20in%20ageing&rft.jtitle=Experimental%20gerontology&rft.au=Ochala,%20Julien&rft.date=2004-03-01&rft.volume=39&rft.issue=3&rft.spage=349&rft.epage=358&rft.pages=349-358&rft.issn=0531-5565&rft.eissn=1873-6815&rft_id=info:doi/10.1016/j.exger.2003.11.004&rft_dat=%3Cproquest_cross%3E71765595%3C/proquest_cross%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-c355t-96b1694217db17a6adebccc2a1c3a7c3763aae7a950ffd0ee48f99e8c0066e0b3%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=71765595&rft_id=info:pmid/15036394&rfr_iscdi=true |