درخت حوزه‌های تخصصی

Introduction: The aim of present study was to determine the effect of biofeedback training on electrical activity of trapezius muscles and range of motion in people with shoulder impingement syndrome. Martials and Methods: In this study, 20 patients with shoulder impingement syndrome in age range of 20-40 y were selected as the statistical sample and were divided into experimental (n=10) and control (n=10) groups. The experimental group trained by using EMG biofeedback for 8 weeks and 3 sessions per week. The control group was applied only for pre-test and posttest measurements. For data collection, surface electromyography was used to analyze the muscle activity patterns of trapezius muscles (upper, middle, lower), and a goniometer was executed to evaluate the flexion. Shapiro-Wilk test was used to confirm the normality of the data and covariance analysis test was applied to compare pre-test and post-test. Correlated t-test was used to examine within-group changes. Results: In this study, after 8 weeks of biofeedback training in the experimental group, a significant improvement in the electrical activity of the middle trapezius (P=0.000) and lower trapezius muscles (P=0.016) was observed. In addition, a significant improvement in the amount of flexion range of motion (P=0.000) was indicated in the experimental group compared to the pretest and also the control group (P=0.05). However, no significant difference was shown in the muscle activity of the upper trapezius muscle (P=0.776). Conclusion: The present study showed that biofeedback training is effective to improve the electrical activity of trapezius muscle and flexion in people with SIS.

Emotional abuse is one of the most common types of abuse in sports. However, due to the lack of awareness of its harmful effects and the hiding of this abuse in the shadow of success, less attention has been paid to it. Objective: Emotional abuse is a repetitive pattern of intentional and non-contact behaviors that is performed to control a person and is detrimental to their emotional, cognitive, or physical health. The purpose of the present study was to investigate the prevalence of emotional abuse among semi-professional adolescent male football players in Mazandaran province. Method: the present study is cross-sectional. A total of 59 football players (aged from 15 to 18 years old) participated in the study voluntarily. Semi-structured interviews were employed to collect data and descriptive statistics and Spearman correlation coefficient were utilized at a significance level of 0.05 to analyze them. Results: The results showed that 37.25% of the participants have experienced emotional abuse such as humiliation, insult, ignoring, ridicule, etc. by the coach during their sports career which resulted in outcomes such as depression, eating disorders, anxiety, and low self-esteem. Conclusion: Based on the findings, it can be concluded that significant ratios of athletes have experienced emotional abuse that has adverse consequences and, in some cases, has led to quitting sport. Therefore, teaching athletes appropriate coping techniques reduces the frequency of common emotional abuse and protects them from it harm in the future.