Kinematic and Electromyographic Activity Changes during Back Squat with Submaximal and Maximal Loading
Joint Authors
Source
Applied Bionics and Biomechanics
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-05-04
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The aim of this study was to investigate the possible kinematic and muscular activity changes with maximal loading during squat maneuver.
Fourteen healthy male individuals, who were experienced at performing squats, participated in this study.
Each subject performed squats with 80%, 90%, and 100% of the previously established 1 repetition maximum (1RM).
Electromyographic (EMG) activities were measured for the vastus lateralis, vastus medialis, rectus femoris, semitendinosus, biceps femoris, gluteus maximus, and erector spinae by using an 8-channel dual-mode portable EMG and physiological signal data acquisition system (Myomonitor IV, Delsys Inc., Boston, MA, USA).
Kinematical data were analyzed by using saSuite 2D kinematical analysis program.
Data were analyzed with repeated measures analysis of variance (p<0.05).
Overall muscle activities increased with increasing loads, but significant increases were seen only for vastus medialis and gluteus maximus during 90% and 100% of 1RM compared to 80% while there was no significant difference between 90% and 100% for any muscle.
The movement pattern in the hip joint changed with an increase in forward lean during maximal loading.
Results may suggest that maximal loading during squat may not be necessary for focusing on knee extensor improvement and may increase the lumbar injury risk.
American Psychological Association (APA)
Yavuz, Hasan U.& Erdag, Deniz. 2017. Kinematic and Electromyographic Activity Changes during Back Squat with Submaximal and Maximal Loading. Applied Bionics and Biomechanics،Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1121179
Modern Language Association (MLA)
Yavuz, Hasan U.& Erdag, Deniz. Kinematic and Electromyographic Activity Changes during Back Squat with Submaximal and Maximal Loading. Applied Bionics and Biomechanics No. 2017 (2017), pp.1-8.
https://search.emarefa.net/detail/BIM-1121179
American Medical Association (AMA)
Yavuz, Hasan U.& Erdag, Deniz. Kinematic and Electromyographic Activity Changes during Back Squat with Submaximal and Maximal Loading. Applied Bionics and Biomechanics. 2017. Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1121179
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1121179