Effect of eccentric exercise-induced muscle damage on electromyographyic activity of quadriceps in untrained healthy females.

Background: The aim of this study was to investigate muscle damage indicators and electromyography activities of quadriceps muscles at 25° of hip flexion in untrained healthy females after an eccentric exercise induced muscle fiber damage.

Methods: A total of 14 healthy females participated in this pre-experimental study. The subjects performed maximal eccentric quadriceps contractions at 25˚ of hip flexion.

Isokinetic dynamometry of the knee extensors and flexors in Iranian healthy males and females.

Background: This paper explores the gender-related bilateral differences of extensor and flexor torques of the knee joint at low and high angular velocities in Iranian healthy males and females.

Methods: 70 healthy subjects (29 males (26.61±4.