2.50
Hdl Handle:
http://hdl.handle.net/2436/111441
Title:
Isokinetic eccentric exercise of quadriceps femoris does not affect running economy.
Authors:
Paschalis, Vassilis; Baltzopoulos,; Mougios, Vassilis; Athanasios, Jamurtas Z..; Theoharis, Vassilis; Karatzaferi, Christina; Koutedakis, Yiannis
Abstract:
The purpose of this study was to investigate whether running economy is affected by isokinetic eccentric exercise designed to cause muscle damage. Twenty-four young healthy men performed 120 maximal voluntary eccentric actions at each thigh's quadriceps muscle at an angular velocity of 60 degrees .s. The participants were then randomly divided into 2 equal groups, 1 of which exercised 24 hours later, while the other group rested. Muscle damage indicators (i.e., serum creatine kinase, delayed onset muscle soreness, and eccentric, concentric, and isometric peak torque) and running economy indicators (i.e., oxygen consumption, pulmonary ventilation, respiratory exchange ratio, respiratory rate, and heart rate during treadmill running at 2.2 and 3.3 m.s) were assessed prior to and 48 hours following the eccentric exercise. All muscle damage indicators changed significantly in both groups (p < 0.05) in a way suggestive of considerable muscle damage. Running economy indicators of the exercise group demonstrated only an elevation of respiratory rate at 48 hours (p < 0.05) and a tendency to lower economy compared to the resting group. It can be concluded that isokinetic eccentric exercise applied to the quadriceps femoris muscles did not affect running economy 48 hours later and that resting during this period tended to result in more economical running compared to exercising at 24 hours.
Affiliation:
Institute of Human Performance and Rehabilitation, Center for Research and Technology of Thessaly, Trikala, Greece. vpasxal@pe.uth.gr
Citation:
Journal of strength and conditioning research, 22 (4):1222-7
Publisher:
Human Kinetics Publishers, Inc.
Journal:
Journal of strength and conditioning research / National Strength & Conditioning Association
Issue Date:
2008
URI:
http://hdl.handle.net/2436/111441
DOI:
10.1519/JSC.0b013e318173da21
PubMed ID:
18545185
Additional Links:
http://proquest.umi.com/pqdweb?RQT=572&TS=1284118059&clientId=53702&VType=PQD&VName=PQD&VInst=PROD&PMID=68236&PCID=41315051&SrtM=0&SrchMode=3&aid=1
Type:
Article
Language:
en
ISSN:
1533-4287
Appears in Collections:
Sport, Exercise and Health Research Group

Full metadata record

DC FieldValue Language
dc.contributor.authorPaschalis, Vassilisen
dc.contributor.authorBaltzopoulos,en
dc.contributor.authorMougios, Vassilisen
dc.contributor.authorAthanasios, Jamurtas Z..en
dc.contributor.authorTheoharis, Vassilisen
dc.contributor.authorKaratzaferi, Christinaen
dc.contributor.authorKoutedakis, Yiannisen
dc.date.accessioned2010-09-20T13:19:02Z-
dc.date.available2010-09-20T13:19:02Z-
dc.date.issued2008-
dc.identifier.citationJournal of strength and conditioning research, 22 (4):1222-7en
dc.identifier.issn1533-4287-
dc.identifier.pmid18545185-
dc.identifier.doi10.1519/JSC.0b013e318173da21-
dc.identifier.urihttp://hdl.handle.net/2436/111441-
dc.description.abstractThe purpose of this study was to investigate whether running economy is affected by isokinetic eccentric exercise designed to cause muscle damage. Twenty-four young healthy men performed 120 maximal voluntary eccentric actions at each thigh's quadriceps muscle at an angular velocity of 60 degrees .s. The participants were then randomly divided into 2 equal groups, 1 of which exercised 24 hours later, while the other group rested. Muscle damage indicators (i.e., serum creatine kinase, delayed onset muscle soreness, and eccentric, concentric, and isometric peak torque) and running economy indicators (i.e., oxygen consumption, pulmonary ventilation, respiratory exchange ratio, respiratory rate, and heart rate during treadmill running at 2.2 and 3.3 m.s) were assessed prior to and 48 hours following the eccentric exercise. All muscle damage indicators changed significantly in both groups (p < 0.05) in a way suggestive of considerable muscle damage. Running economy indicators of the exercise group demonstrated only an elevation of respiratory rate at 48 hours (p < 0.05) and a tendency to lower economy compared to the resting group. It can be concluded that isokinetic eccentric exercise applied to the quadriceps femoris muscles did not affect running economy 48 hours later and that resting during this period tended to result in more economical running compared to exercising at 24 hours.en
dc.language.isoenen
dc.publisherHuman Kinetics Publishers, Inc.en
dc.relation.urlhttp://proquest.umi.com/pqdweb?RQT=572&TS=1284118059&clientId=53702&VType=PQD&VName=PQD&VInst=PROD&PMID=68236&PCID=41315051&SrtM=0&SrchMode=3&aid=1en
dc.subjectOxygen consumptionen
dc.subjectDelayed onset muscle sorenessen
dc.subjectIsokinetic peak torqueen
dc.subject.meshAdulten
dc.subject.meshCreatine Kinaseen
dc.subject.meshHeart Rateen
dc.subject.meshHumansen
dc.subject.meshIsometric Contractionen
dc.subject.meshLower Extremityen
dc.subject.meshMaleen
dc.subject.meshMuscle, Skeletalen
dc.subject.meshOxygen Consumptionen
dc.subject.meshPhysical Education and Trainingen
dc.subject.meshRespirationen
dc.subject.meshRunningen
dc.titleIsokinetic eccentric exercise of quadriceps femoris does not affect running economy.en
dc.typeArticleen
dc.contributor.departmentInstitute of Human Performance and Rehabilitation, Center for Research and Technology of Thessaly, Trikala, Greece. vpasxal@pe.uth.gren
dc.identifier.journalJournal of strength and conditioning research / National Strength & Conditioning Associationen

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