Introduction: The idiopathic scoliosis is a spinal deformity developed in threedimensions that if untreated, can worsened to back pain, impaired vital capacity and psychosocial disturbances. The aim of this study was to investigate the influence of a course of corrective exercises on postural and biomechanical parameters in patients with idiopathic scoliosis. Materials and Methods: 25 patient with idiopathic scoliosis participated for 10 weeks (three sessions per week) in the program of corrective exercises. In order to measuring the angle of scoliosis and the relative difference between inferior angle of the scapula and shoulders, posterior view photogrammetric method was used. Shapiro test was used to determine the normal distribution of data and T-Test to analyze between the results of before and after the test. Results: The results showed a significant decrease in the angle of lateral curvature of the spine (P = 0.000), the markedly differences between the inferior angle of the scapula (P = 0.001) and shoulders (P = 0.035) after participation in the program of corrective exercises. Conclusions: Proper corrective exercises can be effective in reducing the angle of lateral curvature of the spine and the inferior angle of the scapula and shoulders in patients with idiopathic scoliosis.
Running asymmetry has not been assessed among patients with anterior cruciate ligament (ACL) deficiency. The aim of this study was to evaluate the spatiotemporal and muscle force asymmetry indexes in the subjects with ACL reconstruction (ACLR) compared with normal subjects. Eight individuals with a reconstructed ACL and eight individuals with intact ACLs were participated in this study. A Vicon motion analysis system and two Kistler force plates were used to record data. Muscle forces analysis was done by the use of OpenSim software. The results of this study showed that ACLR group had a significant weakness in hip abductor, extensor, and adductor muscles of the affected limb compared with healthy subjects (p < 0.05). In ACLR group, asymmetry of gluteus minimus muscle force was significantly greater than that of healthy group (p = 0.04). After the reconstruction of the ACL, there is still a significant asymmetry in muscle force as well as a reduction in force production of ACLR group especially in reconstructed side which put a person at high risk of reinjuries. Thus, strengthening of these muscles on the affected side to increase running performance of ACLR group is recommended.
Introduction: After reconstructing the anterior cruciate ligament, to prevent re-injury of the ligament, evaluation of neuromuscular function is of clinical importance in coordinating the onset time and time to peak of lower limb's muscles activity. Aim: Therefore, the purpose of this study was to compare the timing of muscle activity in the stance phase of running between athletes with reconstructed anterior cruciate ligament and healthy subjects. Methods: This study was a semi-experimental and applied type. Ten athletes with reconstructed anterior cruciate ligament who at least one year had passed since their surgery, as experimental group and ten healthy subjects as the control group of Hamedan city were volunteered to participate in the study. The control group, in terms of age, height, and weight, were homological with the experimental group. The surface electromyography system was used to quantify the onset time and time to peak of the lower limb's muscle activity. Multivariate MANOVA, with a significance level of P < 0.05, was used for statistical analysis. Results: In the experimental group, the onset of the activity in tibialis anterior, medial gastrocnemius, vastus medialis, vastus lateralis, gluteus medius (P = 0.001), as well as the time to peak in tibialis anterior, vastus lateralis, vastus medialis, gluteus medius, semitendinosus (P = 0.001) and biceps femoris (P = 0.045), were delayed. Conclusions: During the stance phase of running, the experimental group displayed a delay in the activation onset and a longer time to peak in the lower limb's muscles. It is not clear if these changes are due to a neuromuscular adaptation or proprioception related damage. A more comprehensive study is recommended to clarify this aspect. It is recommended to assess the possible link between these delays with the reoccurrence of anterior cruciate ligament rupture.
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