Forefoot running requires shorter gastrocnemius fascicle length than rearfoot running     

Takahito Suzuki  Rintaro Ogane  Katsutoshi Yaeshima 《Journal of sports sciences》2013,31(17):1972-1980

ABSTRACT

This study aimed to investigate the influence of foot strike patterns on the behaviour of the triceps surae muscle-tendon unit, including the Achilles tendon whose length nearly corresponds to force of the triceps surae, and the medial gastrocnemius muscle (MG) during running. Seven male volunteers ran with forefoot and rearfoot strikes at 10, 14 and 18 km h^?1 on a treadmill. The MG fascicle length was measured using ultrasonography. The in vivo length of the curved Achilles tendon was quantified by combining ultrasonography with optical motion capture of reflective markers on the right lower limb and an ultrasound probe. The forefoot strike resulted in a significantly shorter MG fascicle length at the initial contact, at Achilles tendon peak elongation, and at toe-off, than the rearfoot strike. The Achilles tendon length at initial contact was greater during the forefoot strike than during the rearfoot strike at 18 km h^?1, while its peak elongation was not significantly different during forefoot and rearfoot running. These results indicate that the MG, with a shorter length during forefoot running, manages to address demands for a similar peak force of the triceps surae than during rearfoot running.  相似文献   

应力致使腰部肌肉关节挛缩和退行性变机理分析与治疗     

施亚萍 《武汉体育学院学报》1998,(2)

运动中各种不适合于腰椎生理要求的应力致使腰部肌肉、关节发生挛缩和退行性变,其病理变化多在肌肉的起止点,即腰三横突部。本文对腰三横突综合症的发病机理与小针刀治疗方法的效果进行了分析讨论。  相似文献   

维生素E治疗运动性腰背肌肉筋膜炎的临床观察   总被引：1，自引：0，他引：1  

陈树良 《山东体育科技》2003,25(1):24-24,20

维生素E能改善微循环和局部组织营养状况，参与组织细胞的氧代谢；运用维生素E治疗腰背肌肉筋膜炎患者，改善了肌肉组织细胞的氧代谢，有利于对损伤组织的修复，在临床上取得了满意的疗效。  相似文献