Comparison of Acute Responses to Isotonic or Isokinetic Eccentric Muscle Action: Differential Outcomes in Skeletal Muscle Damage and Implications for Rehabilitation
Abstract Both isotonic and isokinetic eccentric muscle contractions are commonly used in muscle research laboratories to induce muscle damage, yet, the muscle damage outcomes between these 2 modes of eccentric contraction have not been compared. The purpose of this study was to compare modes of cont...
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| Veröffentlicht in: | International journal of sports medicine 2014-01, Vol.35 (1), p.1-7 |
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| creator | Alemany, J. A. Delgado-Díaz, D. C. Mathews, H. Davis, J. M. Kostek, M. C. |
| description | Abstract
Both isotonic and isokinetic eccentric muscle contractions are commonly used in muscle research laboratories to induce muscle damage, yet, the muscle damage outcomes between these 2 modes of eccentric contraction have not been compared. The purpose of this study was to compare modes of contraction for differences in muscle damage. 16 men were placed in the isotonic (IT: 110% of maximal isometric torque) or the isokinetic (IK: 120°/s) group, with each group performing 200 eccentric muscle actions of the knee extensors. Isometric peak torque, perceived soreness and CK activity were measured immediately pre and post exercise, and 48-h post exercise. Mean total work (~1 700 J) and peak torque per set (~265 Nm) decreased over the 200 repetitions (p |
| doi_str_mv | 10.1055/s-0032-1327652 |
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Both isotonic and isokinetic eccentric muscle contractions are commonly used in muscle research laboratories to induce muscle damage, yet, the muscle damage outcomes between these 2 modes of eccentric contraction have not been compared. The purpose of this study was to compare modes of contraction for differences in muscle damage. 16 men were placed in the isotonic (IT: 110% of maximal isometric torque) or the isokinetic (IK: 120°/s) group, with each group performing 200 eccentric muscle actions of the knee extensors. Isometric peak torque, perceived soreness and CK activity were measured immediately pre and post exercise, and 48-h post exercise. Mean total work (~1 700 J) and peak torque per set (~265 Nm) decreased over the 200 repetitions (p<0.01), and was not different between groups. Damage markers changed 48-h post exercise (p<0.05): peak isometric torque (−13%), creatine kinase activity (+200%) and self-perceived muscular soreness (+4 unit change). Significant group×time interactions (p<0.01) indicated that peak isometric torque was 22% lower, and creatine kinase and self-perceived muscular soreness were 330% and 3 unit difference higher in the IT as compared to the IK groups, 48-h post exercise. When equating for total work, skeletal muscle damage markers are higher during IT vs. IK modes. This reflects differences inherent in contraction type and suggests that this should be taken into account during physical rehabilitation.</description><identifier>ISSN: 0172-4622</identifier><identifier>EISSN: 1439-3964</identifier><identifier>DOI: 10.1055/s-0032-1327652</identifier><identifier>PMID: 23780898</identifier><identifier>CODEN: IJSMDA</identifier><language>eng</language><publisher>Stuttgart · New York: Georg Thieme Verlag KG</publisher><subject>Adult ; Biological and medical sciences ; Biomarkers - blood ; Creatine Kinase - blood ; Exercise - physiology ; Fundamental and applied biological sciences. Psychology ; Human physiology applied to population studies and life conditions. Human ecophysiology ; Humans ; Isotonic Contraction - physiology ; Knee - physiology ; Linear Models ; Male ; Medical sciences ; Muscle Contraction - physiology ; Muscle Strength Dynamometer ; Muscle, Skeletal - physiology ; Musculoskeletal Pain - diagnosis ; Musculoskeletal Pain - etiology ; Musculoskeletal Pain - physiopathology ; Pain Measurement ; Physiology & Biochemistry ; Torque ; Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports</subject><ispartof>International journal of sports medicine, 2014-01, Vol.35 (1), p.1-7</ispartof><rights>2015 INIST-CNRS</rights><rights>Georg Thieme Verlag KG Stuttgart · New York.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c396t-ea14dbeacfe1dfa14ba1bb7d117f73208cda62be2ff45b5972380ce516d2a3663</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-0032-1327652.pdf$$EPDF$$P50$$Gthieme$$H</linktopdf><linktohtml>$$Uhttps://www.thieme-connect.de/products/ejournals/html/10.1055/s-0032-1327652$$EHTML$$P50$$Gthieme$$H</linktohtml><link.rule.ids>314,778,782,3006,3007,27907,27908,54542,54543</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28084496$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23780898$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Alemany, J. A.</creatorcontrib><creatorcontrib>Delgado-Díaz, D. C.</creatorcontrib><creatorcontrib>Mathews, H.</creatorcontrib><creatorcontrib>Davis, J. M.</creatorcontrib><creatorcontrib>Kostek, M. C.</creatorcontrib><title>Comparison of Acute Responses to Isotonic or Isokinetic Eccentric Muscle Action: Differential Outcomes in Skeletal Muscle Damage and Implications for Rehabilitation</title><title>International journal of sports medicine</title><addtitle>Int J Sports Med</addtitle><description>Abstract
Both isotonic and isokinetic eccentric muscle contractions are commonly used in muscle research laboratories to induce muscle damage, yet, the muscle damage outcomes between these 2 modes of eccentric contraction have not been compared. The purpose of this study was to compare modes of contraction for differences in muscle damage. 16 men were placed in the isotonic (IT: 110% of maximal isometric torque) or the isokinetic (IK: 120°/s) group, with each group performing 200 eccentric muscle actions of the knee extensors. Isometric peak torque, perceived soreness and CK activity were measured immediately pre and post exercise, and 48-h post exercise. Mean total work (~1 700 J) and peak torque per set (~265 Nm) decreased over the 200 repetitions (p<0.01), and was not different between groups. Damage markers changed 48-h post exercise (p<0.05): peak isometric torque (−13%), creatine kinase activity (+200%) and self-perceived muscular soreness (+4 unit change). Significant group×time interactions (p<0.01) indicated that peak isometric torque was 22% lower, and creatine kinase and self-perceived muscular soreness were 330% and 3 unit difference higher in the IT as compared to the IK groups, 48-h post exercise. When equating for total work, skeletal muscle damage markers are higher during IT vs. IK modes. This reflects differences inherent in contraction type and suggests that this should be taken into account during physical rehabilitation.</description><subject>Adult</subject><subject>Biological and medical sciences</subject><subject>Biomarkers - blood</subject><subject>Creatine Kinase - blood</subject><subject>Exercise - physiology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Human physiology applied to population studies and life conditions. Human ecophysiology</subject><subject>Humans</subject><subject>Isotonic Contraction - physiology</subject><subject>Knee - physiology</subject><subject>Linear Models</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Muscle Contraction - physiology</subject><subject>Muscle Strength Dynamometer</subject><subject>Muscle, Skeletal - physiology</subject><subject>Musculoskeletal Pain - diagnosis</subject><subject>Musculoskeletal Pain - etiology</subject><subject>Musculoskeletal Pain - physiopathology</subject><subject>Pain Measurement</subject><subject>Physiology & Biochemistry</subject><subject>Torque</subject><subject>Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. 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C.</creator><general>Georg Thieme Verlag KG</general><general>Thieme</general><scope>IQODW</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>7X8</scope><scope>7TS</scope></search><sort><creationdate>20140101</creationdate><title>Comparison of Acute Responses to Isotonic or Isokinetic Eccentric Muscle Action: Differential Outcomes in Skeletal Muscle Damage and Implications for Rehabilitation</title><author>Alemany, J. A. ; Delgado-Díaz, D. C. ; Mathews, H. ; Davis, J. M. ; Kostek, M. C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c396t-ea14dbeacfe1dfa14ba1bb7d117f73208cda62be2ff45b5972380ce516d2a3663</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Adult</topic><topic>Biological and medical sciences</topic><topic>Biomarkers - blood</topic><topic>Creatine Kinase - blood</topic><topic>Exercise - physiology</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Human physiology applied to population studies and life conditions. Human ecophysiology</topic><topic>Humans</topic><topic>Isotonic Contraction - physiology</topic><topic>Knee - physiology</topic><topic>Linear Models</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Muscle Contraction - physiology</topic><topic>Muscle Strength Dynamometer</topic><topic>Muscle, Skeletal - physiology</topic><topic>Musculoskeletal Pain - diagnosis</topic><topic>Musculoskeletal Pain - etiology</topic><topic>Musculoskeletal Pain - physiopathology</topic><topic>Pain Measurement</topic><topic>Physiology & Biochemistry</topic><topic>Torque</topic><topic>Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Alemany, J. A.</creatorcontrib><creatorcontrib>Delgado-Díaz, D. C.</creatorcontrib><creatorcontrib>Mathews, H.</creatorcontrib><creatorcontrib>Davis, J. M.</creatorcontrib><creatorcontrib>Kostek, M. C.</creatorcontrib><collection>Pascal-Francis</collection><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><collection>Physical Education Index</collection><jtitle>International journal of sports medicine</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Alemany, J. A.</au><au>Delgado-Díaz, D. C.</au><au>Mathews, H.</au><au>Davis, J. M.</au><au>Kostek, M. C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Comparison of Acute Responses to Isotonic or Isokinetic Eccentric Muscle Action: Differential Outcomes in Skeletal Muscle Damage and Implications for Rehabilitation</atitle><jtitle>International journal of sports medicine</jtitle><addtitle>Int J Sports Med</addtitle><date>2014-01-01</date><risdate>2014</risdate><volume>35</volume><issue>1</issue><spage>1</spage><epage>7</epage><pages>1-7</pages><issn>0172-4622</issn><eissn>1439-3964</eissn><coden>IJSMDA</coden><abstract>Abstract
Both isotonic and isokinetic eccentric muscle contractions are commonly used in muscle research laboratories to induce muscle damage, yet, the muscle damage outcomes between these 2 modes of eccentric contraction have not been compared. The purpose of this study was to compare modes of contraction for differences in muscle damage. 16 men were placed in the isotonic (IT: 110% of maximal isometric torque) or the isokinetic (IK: 120°/s) group, with each group performing 200 eccentric muscle actions of the knee extensors. Isometric peak torque, perceived soreness and CK activity were measured immediately pre and post exercise, and 48-h post exercise. Mean total work (~1 700 J) and peak torque per set (~265 Nm) decreased over the 200 repetitions (p<0.01), and was not different between groups. Damage markers changed 48-h post exercise (p<0.05): peak isometric torque (−13%), creatine kinase activity (+200%) and self-perceived muscular soreness (+4 unit change). Significant group×time interactions (p<0.01) indicated that peak isometric torque was 22% lower, and creatine kinase and self-perceived muscular soreness were 330% and 3 unit difference higher in the IT as compared to the IK groups, 48-h post exercise. When equating for total work, skeletal muscle damage markers are higher during IT vs. IK modes. This reflects differences inherent in contraction type and suggests that this should be taken into account during physical rehabilitation.</abstract><cop>Stuttgart · New York</cop><pub>Georg Thieme Verlag KG</pub><pmid>23780898</pmid><doi>10.1055/s-0032-1327652</doi><tpages>7</tpages></addata></record> |
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| subjects | Adult Biological and medical sciences Biomarkers - blood Creatine Kinase - blood Exercise - physiology Fundamental and applied biological sciences. Psychology Human physiology applied to population studies and life conditions. Human ecophysiology Humans Isotonic Contraction - physiology Knee - physiology Linear Models Male Medical sciences Muscle Contraction - physiology Muscle Strength Dynamometer Muscle, Skeletal - physiology Musculoskeletal Pain - diagnosis Musculoskeletal Pain - etiology Musculoskeletal Pain - physiopathology Pain Measurement Physiology & Biochemistry Torque Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports |
| title | Comparison of Acute Responses to Isotonic or Isokinetic Eccentric Muscle Action: Differential Outcomes in Skeletal Muscle Damage and Implications for Rehabilitation |
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