Differential patterns of muscle modification in women with episodic and chronic tension-type headache revealed using surface electromyographic analysis

Abstract Tension-type headache (TTH) is a prototypical disorder in which muscular factors play a key role in the pathogenesis. This study was designed to understand muscular dysfunction in patients with episodic (ETTH) and chronic TTH (CTTH) using surface electromyography analysis (SEMG). Women with...

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Bibliographic Details
Published in:Journal of electromyography and kinesiology 2013-02, Vol.23 (1), p.110-117
Main Authors: Sohn, Jong-Hee, Choi, Hui-Chul, Jun, Ah-Young
Format: Article
Language:English
Subjects:
Adaptation, Physiological
Adult
Aged
Chronic tension-type headache
Electromyography - methods
Episodic tension-type headache
Fatigability
Female
Humans
Isometric Contraction
Middle Aged
Muscle, Skeletal - physiopathology
Physical Endurance
Physical Medicine and Rehabilitation
Psychomotor Performance
Surface electromyography
Tension-Type Headache - physiopathology
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Summary:Abstract Tension-type headache (TTH) is a prototypical disorder in which muscular factors play a key role in the pathogenesis. This study was designed to understand muscular dysfunction in patients with episodic (ETTH) and chronic TTH (CTTH) using surface electromyography analysis (SEMG). Women with frequent ETTH ( n = 14), CTTH ( n = 14) and age-matched controls ( n = 13) were recruited. SEMG data were recorded from the masseter, sternocleidomastoid, and upper trapezius muscles during maximum voluntary contraction and sustained voluntary isometric clenching, the neck flexion endurance test and shoulder elevation for 30 s. The root mean square (RMS) and median frequency (MDF) of the SEMG signal were measured throughout the test. The fatigue index, which is the MDF slope during sustained muscle contraction, decreased significantly faster in the ETTH and CTTH groups compared with that in the control ( p < 0.05). The mean absolute RMS and relative percentage values at the initial and final period during sustained isometric contraction decreased significantly in the CTTH group ( p < 0.05). Furthermore, headache clinical parameters (frequency and duration) were negatively correlated with the amplitude values ( p < 0.05). A different muscle firing pattern or some muscle modifications in patients with CTTH may reflect reorganization of the motor-control strategy.
ISSN:1050-6411
1873-5711
DOI:10.1016/j.jelekin.2012.08.001