title: Comparison of the electromyographic activity of the tibialis anterior and gastrocnemius in stroke patients and healthy subjects during squat exercise.
abstract: [Purpose] The purpose of this study was to compare the EMG activity of the tibialis anterior (TA) and gastrocnemius (GCM) during the downward, maintenance, and upward phases of the squat exercise and during passive ankle dorsiflexion range of motion between stroke patients and healthy subjects. [Subjects] Fifteen hemiplegic (8 males, 7 females) and 15 healthy subjects (4 males, 11 females) volunteered for this study. [Methods] All subjects performed a double-leg squat exercise with the knee joint flexed to 30°. Surface electromyography (EMG) signals were recorded from the TA and GCM on the paretic or nondominant side. Passive ankle dorsiflexion range of motion (DF PROM) was measured using a goniometer in the knee-extended prone position. [Results] In the downward and maintenance phases, TA activity was significantly higher in stroke patients compared with healthy subjects. In the upward phase, GCM activity was significantly lower in stroke patients compared with healthy subjects. Ankle DF PROM was significantly lower in stroke patients compared with healthy subjects. [Conclusion] The observed EMG patterns should be taken into consideration to inform and enhance therapy for stroke patients.
authors: Department of Rehabilitation Science, Graduate School, Inje University, Republic of Korea.
authors: Dong-Kyu
authors: DK
authors: Lee
authors: Department of Physical Therapy, Graduate School, Inje University, Republic of Korea.
authors: Jun-Seok
authors: JS
authors: Kim
authors: Department of Occupational Therapy, Dongseo University, Republic of Korea.
authors: Tae-Hoon
authors: TH
authors: Kim
authors: Department of Physical Therapy, College of Biomedical Science and Engineering, Inje University, Republic of Korea.
authors: Jae-Seop
authors: JS
authors: Oh
keywords: EMG; Squat exercise; Stroke
references: Brain. 1995 Apr;118 ( Pt 2):495-510
references: 7735890
references: Clin Neurophysiol. 2012 Feb;123(2):344-50
references: 21816669
references: J Rehabil Res Dev. 2008;45(2):323-8
references: 18566949
references: Physiother Res Int. 2012 Sep;17(3):150-6
references: 22147298
references: Clin Orthop Relat Res. 1983 May;(175):147-54
references: 6839580
references: J Rehabil Med. 2013 Jun;45(6):541-5
references: 23793340
references: J Appl Biomech. 2008 Nov;24(4):333-9
references: 19075302
references: J Head Trauma Rehabil. 1999 Apr;14(2):116-35
references: 10191371
references: J Sport Rehabil. 2012 May;21(2):144-50
references: 22100617
references: J Appl Physiol (1985). 2013 Dec;115(12):1742-50
references: 24136108
references: J Rehabil Med. 2008 Apr;40(4):284-90
references: 18382824
references: Clin Neurophysiol. 2006 Oct;117(10):2328-37
references: 16926111
references: J Rehabil Res Dev. 2004 May;41(3A):293-312
references: 15543447
references: Arch Phys Med Rehabil. 2003 Dec;84(12 ):1753-9
references: 14669179
references: Muscle Nerve. 2004 Dec;30(6):732-42
references: 15468340