Evaluation of moment-angle curves in isokinetic knee extension

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Deutscher übersetzter Titel:Untersuchung von Kraftmoment-Gelenkwinkel-Kurven bei isokinetischen Kniestreckuebungen
Autor:Bobbert, Maarten Frank; Harlaar, Jaap
Erschienen in:Medicine and science in sports and exercise
Veröffentlicht:25 (1993), 2, S. 251-259, Lit.
Format: Literatur (SPOLIT)
Publikationstyp: Zeitschriftenartikel
Medienart: Gedruckte Ressource
Sprache:Englisch
ISSN:0195-9131, 1530-0315
Schlagworte:
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Erfassungsnummer:PU199307065834
Quelle:BISp
id PU199307065834
bisp-collection db
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last_indexed 2008-05-16T09:46:46Z
first_indexed 2003-12-30T14:31:44Z
publication_source BISp
subformat Zeitschriftenartikel
hierarchy_top_id JO00000000986
hierarchy_parent_id JOI199300020000986
hierarchy_top_title Medicine and science in sports and exercise
hierarchy_parent_title Medicine and science in sports and exercise, 1993, 2
is_hierarchy_id PU199307065834
is_hierarchy_title Evaluation of moment-angle curves in isokinetic knee extension
hierarchy_sequence 0251
recordtype bisparticle
publishDate 1993
publishDate_facet 1993
language eng
title Evaluation of moment-angle curves in isokinetic knee extension
spellingShingle Evaluation of moment-angle curves in isokinetic knee extension
Elektromyographie
Extension
Kniegelenk
Kraftmessung, isokinetische
Kraftmoment
Muskelkontraktilität
Muskelkontraktion, isokinetische
Skelettmuskulatur
Sportmedizin
Winkelgeschwindigkeit
title_sort evaluation of momentangle curves in isokinetic knee extension
title_short Evaluation of moment-angle curves in isokinetic knee extension
title_alt Untersuchung von Kraftmoment-Gelenkwinkel-Kurven bei isokinetischen Kniestreckuebungen
title_alt_lang deu
media_type Gedruckte Ressource
city Indianapolis (Ind.)
abstract The purpose of this study was to challenge the notion that the relationship ofmoment of force to angular velocity, determined in isokinetic knee extension tests, reflects the force-velocity relationship of human knee extensors. For this purpose, maximum-effort isometric knee extension moments were collected at seven different knee joint angles, and maximum-effort isokinetic knee extension moments were measured as a function of knee joint angle at angular velocities of 30, 60, 120, and 210 deg/s. For the isokinetic contractions two protocols were used with a different threshold moment, i.e., the minimum knee extension moment that had to be reached isometrically before knee extension was initiated. In one protocol (LTM, for low threshold moment) the threshold was set at 5 of the maximum isometric knee extension moment produced at the starting angle of 85 deg (180 deg being full knee extension), in the second protocol (HTM, for high threshold moment) it was set at 95 of this isometric moment. Two hypotheses were specifically tested. The first was that the threshold moment does not affect knee extension moments in the middle of the range of motion. Between knee angles of 100 deg and 145 deg, no differences were found between moments produced in the HTM protocol and those produced in the LTM protocol. Thus, the first hypothesis was supported. The second hypothesis was that subjects achieve the same level of muscle excitation at different speeds. This hypothesis was rejected. Verf.-Referat (gekuerzt)
abstract_lang eng
abstract_type abstract
author2 Bobbert, Maarten Frank
Harlaar, Jaap
author_facet Bobbert, Maarten Frank
Harlaar, Jaap
author2-role Autor
Autor
author2-authorityid P377106

author_author_facet Bobbert, Maarten Frank
Harlaar, Jaap
author2-synonym

author2_hierarchy_facet 0/Autor/
1/Autor/Bobbert, Maarten Frank/
0/Autor/
1/Autor/Harlaar, Jaap/
issn 0195-9131
1530-0315
spelling 0195-9131
1530-0315
603994-7
Elektromyographie
Extension
Kniegelenk
Kraftmessung, isokinetische
Kraftmoment
Muskelkontraktilität
Muskelkontraktion, isokinetische
Skelettmuskulatur
Sportmedizin
Winkelgeschwindigkeit
angular velocity
electromyography
extension
isokinetic force measurement
isokinetic muscle contraction
knee-joint
moment of force
muscle contractility
skeletal muscles
sports medicine
Streckphase
Streckung
Streckkraft
Knie
Genu varum
Knieaussenband
Kniebandverletzung
Kniegelenkoperation
Knieinnenband
Lig. collaterale mediale
Ligamentum collaterale mediale
Genu valgum
Amplitude
Elektromyogramm
EMG
Kontraktilität
Muskulatur
Skelettmuskel
Muskel
Medizin
Geschichte der Medizin
Untersuchung, sportmedizinische
Wasserdampf
isokinetic strength measurement
torque
Evaluation of moment-angle curves in isokinetic knee extension
PU199307065834
199307065834
zdb 603994-7
location_hierarchy_facet 0/USA/
1/USA/Indiana/
topic Elektromyographie
Extension
Kniegelenk
Kraftmessung, isokinetische
Kraftmoment
Muskelkontraktilität
Muskelkontraktion, isokinetische
Skelettmuskulatur
Sportmedizin
Winkelgeschwindigkeit
topic_facet Elektromyographie
Extension
Kniegelenk
Kraftmessung, isokinetische
Kraftmoment
Muskelkontraktilität
Muskelkontraktion, isokinetische
Skelettmuskulatur
Sportmedizin
Winkelgeschwindigkeit
topic_en angular velocity
electromyography
extension
isokinetic force measurement
isokinetic muscle contraction
knee-joint
moment of force
muscle contractility
skeletal muscles
sports medicine
topic_en_facet angular velocity
electromyography
extension
isokinetic force measurement
isokinetic muscle contraction
knee-joint
moment of force
muscle contractility
skeletal muscles
sports medicine
synonym Streckphase
Streckung
Streckkraft
Knie
Genu varum
Knieaussenband
Kniebandverletzung
Kniegelenkoperation
Knieinnenband
Lig. collaterale mediale
Ligamentum collaterale mediale
Genu valgum
Amplitude
Elektromyogramm
EMG
Kontraktilität
Muskulatur
Skelettmuskel
Muskel
Medizin
Geschichte der Medizin
Untersuchung, sportmedizinische
Wasserdampf
synonym_en isokinetic strength measurement
torque
journal_facet Medicine and science in sports and exercise
container_title Medicine and science in sports and exercise
container_volume 25
container_issue 2
container_start_page S. 251-259
has_references 1
institution BISp
journal_fac JO00000000986
journal_year 1993
journal_issue 2
_version_ 1791518479492317184
score 13,546017