This study analyses the differences in the relative cross - sectional area ( rcsa ) of several cervical extensor muscles , assessed by magnetic resonance imaging ( mri ) , between patients with chronic tension - type headache ( ctth ) and healthy controls 該研究運(yùn)用mri評價慢性緊張型頭痛患者和健康對照者頸部伸肌的橫截面積的差異。
Conclusion : the muscle strength of shoulder girdle is weak in amateur sprinters , indicating that it is one of the principal factors affecting the performance . the extensor muscle strength of shoulder joint is more influencing than the flexor muscle strength 應(yīng)用要點(diǎn):文章以專業(yè)和業(yè)余的短跑運(yùn)動員為觀察對象,測試了其肩關(guān)節(jié)各肌群的力矩,結(jié)果發(fā)現(xiàn)專業(yè)運(yùn)動員無論是肩關(guān)節(jié)屈肌群還是伸肌群力矩均大于業(yè)余運(yùn)動員,證實了短跑運(yùn)動員肩帶肌群力量是造成運(yùn)動員成績差異的主要原因之一。