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The role of muscle fatigue on knee biomechanics during single leg landings


Kasović, Mario; Mejovšek, Mladen; Medved, Vladimir; Lončar, Vedrana
The role of muscle fatigue on knee biomechanics during single leg landings // Book of Abstracts of the 12th Annual Congress of the European College of Sports Science / Kallio, Jouni ; Komi V., Paavo ; Komulainen, Jyrki ; Avela, Janne (ur.).
Jyvaskyla, Finland: Otavan Kirjapaino Oy, 2007. str. 325-326 (poster, međunarodna recenzija, sažetak, znanstveni)


Naslov
The role of muscle fatigue on knee biomechanics during single leg landings

Autori
Kasović, Mario ; Mejovšek, Mladen ; Medved, Vladimir ; Lončar, Vedrana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts of the 12th Annual Congress of the European College of Sports Science / Kallio, Jouni ; Komi V., Paavo ; Komulainen, Jyrki ; Avela, Janne - Jyvaskyla, Finland : Otavan Kirjapaino Oy, 2007, 325-326

ISBN
978-951-790-242-7

Skup
12th Annual Congress of the European College of Sports Science

Mjesto i datum
Jyvaskyla, Finland, 11-14.07.2007

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Muscle fatigue; knee biomechanics; landings

Sažetak
The purpose of this research was to determine the role of the lower extremity muscle fatigue on the knee biomechanics and proprioceptive sensitivity during single leg landings. Following kinematic variables were studied: valgus and varus angle, angle of the inner and outer rotation as well as the angle of the flexion and extension in the knee joint and ground reaction force (GRF). The original EMG signals m. vastus medialis, m. vastus lateralis, m. biceps femoris and m. gastrocnemius, have been measured during execution of the maximum static contraction lasting for 10 seconds, with the aid of an dynamo-metric bench, and used for assessment of the fatigue by spectral analysis. Statistically significant drop in correlation coefficient of the kinematic parameters, within the experimental group after fatiguing, is particularly expressed in inner and outer rotation angle as well as valgus-varus movement of both legs, what points at a motor deficit i.e. decrease of the proprioceptive senses caused by musculature fatigue. The analysis of the GRF signal also shows statistically significant differences between groups at almost all components, excluding component in direction front - back. This research showed a significant influence of the fatigue on the proprioceptive sensitivity and the motor control in knee joint.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Kliničke medicinske znanosti, Pedagogija



POVEZANOST RADA


Projekt / tema
034-0000000-2340 - Biomehanička efikasnost vrhunskih hrvatskih sportaša (Ljubomir Antekolović, )
034-0362979-2334 - Automatizirano mjerenje pokreta i ekspertna procjena u studiju lokomocije (Vladimir Medved, )

Ustanove
Kineziološki fakultet, Zagreb