Journal of Physical Therapy Science
Online ISSN : 2187-5626
Print ISSN : 0915-5287
ISSN-L : 0915-5287
Original Articles
Effects of Various Foot Wedge Boards on Vastus Medialis Oblique and Vastus Lateralis Muscles during Lunge Exercise
Min-hee KimWon-gyu Yoo
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2013 Volume 25 Issue 3 Pages 233-234

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Abstract

[Purpose] This study applied the lunge exercise using a variety of foot wedge boards to analyze differences in the muscle activities of the vastus lateralis (VL) and vastus medialis oblique (VMO) and the VMO/VL ratios. [Subjects] This study was performed on 20 asymptomatic males. [Methods] Surface electromyography measurements were obtained under 5 lunge exercise conditions. [Result] The EMG activity for the VL muscle significantly increased in the order of conditions as follows: anterior wedge < no wedge and medial wedge < lateral wedge and posterior wedge. The EMG activity for the VMO muscle significantly increased in the order of conditions as follows: anterior wedge < no wedge and lateral wedge < medial wedge and posterior wedge. The VMO/VL ratios under the medial wedge and posterior wedge conditions were significantly increased. [Conclusion] Use of medial and posterior wedge boards during the lunge exercise can selectively strengthen the VMO.

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© 2013 by the Society of Physical Therapy Science
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