Effects of fatigue on lower limb, pelvis and trunk kinematics and muscle activation: Gender differences.

Background: Muscle fatigue is associated with biomechanical changes that may lead to anterior cruciate ligament (ACL) injuries. Alterations in trunk and pelvis kinematics may also be involved in ACL injury. Although some studies have compared the effects of muscle fatigue on lower limb kinematics between men and women, little is known about its effects on pelvis and trunk kinematics.

Analisys of pectoralis major tendon in weightlifting athletes using ultrasonography and elastography.

Objective: To evaluate tendinopathy of the pectoralis major muscle in weightlifting athletes using ultrasound and elastography.

Methods: This study included 20 patients, 10 with rupture of the pectoralis major muscle and 10 control patients. We evaluated pectoralis major muscle contralateral tendon with ultrasonographic and elastography examinations.