TY - JOUR T1 - The effect of two different Training methods on isometric strength of the head and neck extensor muscles TT - اثر دو روش تمرینی مختلف بر قدرت ایزومتریک عضلات اکستانسور سروگردن JF - J-Mazand-Univ-Med-Sci JO - J-Mazand-Univ-Med-Sci VL - 22 IS - 1 UR - http://jmums.mazums.ac.ir/article-1-3606-en.html Y1 - 2013 SP - 267 EP - 272 KW - Exercise KW - Isometric KW - Extensor muscles KW - Neck KW - Head N2 - Background and purpose: Strengthening the cervical extensor muscles is recommended as a way of prevention and treatment of neck pain. The purpose of this study was to investigate the effect of two different exercise protocols on isometric strength of the head and neck extensor muscles in healthy subjects. Material and Methods: In this study, a total of twenty-eight healthy females, 20-25 years of age, were randomly allocated into a head and neck-extension strengthening exercise group (n=14) and a shoulder-abduction strengthening exercise group (n=14). Each two study groups performed exercises 3 days/week for 10 weeks. In groups, head and neck muscle isometric strength was measured by an isometric muscle strength measurement device both before and after the intervention. Results: Two study groups showed a significant increase in isometric strength of the head and neck extensor muscles (p M3 ER -