University of Tehran Journal of Exercise Science and Medicine 2717-2422 6 1 2014 04 21 The Comparison of Lumbar Spine Strength, Endurance and Range of Motion in Athletes with and without Low Back Pain مقایسه قدرت، استقامت و دامنه حرکتی ستون فقرات کمری ورزشکاران با و بدون کمر درد 1 17 50127 10.22059/jsmed.2014.50127 EN Ali Asghar Norasteh Hasan Daneshmandi Jafar Vaghefi Sare Shah Heidari Journal Article 2010 04 07 <em>Low back injuries account for 10-15% of all athletic injuries. It is difficult to design an exercise program to prevent and rehabilitate low back injury without knowing the differences in the kinematics and spinal loads in the sports techniques and the physical characteristics associated with low back pain (LBP). The aim of this study was to compare strength, endurance and range of motion of lumbar spine in athletes with and without LBP. 15 male athletes (mean age 21.35<span style="text-decoration: underline;">+</span>3.7 yr, height 177<span style="text-decoration: underline;">+</span>8.44 cm and weight 72.8<span style="text-decoration: underline;">+</span>6.3 kg) without any history of LBP were matched by age and handicap to 15 male athletes (mean age 21.8<span style="text-decoration: underline;">+</span>2.34 yr, height 173.6<span style="text-decoration: underline;">+</span>6.38 cm and weight 70.65<span style="text-decoration: underline;">+</span>8.18 kg) with a history of non-specific LBP. The subjects voluntarily participated in this study. An Oswestry and Quebec questionnaire was used to determine handicap and severity of low back pain. </em><em>A spinal mouse device was used to determine lumbar range of motion, and Nicholas manual muscle tester (MMT) was used to assess muscular strength of lumbar muscles, and Ito endurance tests was used to measure lumbar muscular endurance.</em><em> The LBP athletes significantly demonstrated less lumbar extension muscle endurance (P=0.016) and less lumbar extension range of motion (P=0.05). No significant differences were found in lumbar flexor endurance, lumbar flexors and extensors muscular strength and lumbar flexion range of motion </em><em>(P>0.05).</em><em> Although differences found in this study cannot be determined as causes or results of low back injuries in athletes, clinicians may be able to design a more appropriate exercise program for athletes to prevent or rehabilitate low back injury based on these findings.</em> https://jsmed.ut.ac.ir/article_50127_615e5e0462863abfd9f3652af0efb724.pdf