فهرست مطالب mh. kordi ashkezari

Ankle sprain is one of the most common lower limb injuries. The sprain symptoms can be permanent and the person has functional instability of the ankle, but some people can return to their pre-injury period, and these people are called Cooper. Ankle sprain and subsequent functional instability may cause a disturbance in the proprioceptive sense of the ankle joint. Therefore, the purpose of this study was to compare the sense of the ankle joint position in athletes with functional ankle instability (non-Coper), healthy and Coper.

This was a comparative causal study that was conducted in Yazd in 1402. A number of 75 athletes were placed in three groups of ankle functional instability, Coper and healthy. Functional Ankle Instability Diagnosis Questionnaire (IdFAI) was used to diagnose Coper and Non-Coper athletes. At first, with the help of proprioceptive photography, their ankle joint was evaluated as an active reconstruction of the angle with closed eyes in the angles of 20 degrees of plantar flexion and 10 degrees of dorsiflexion, and then the three groups were compared with each other. The collected data were analyzed using one-way analysis of variance, Levens test, Shapiro-Wilk, and Tukey's post hoc statistical tests.

The results of Levens and Shapiro-Wilk test showed that the normality of the data and the equality of variances as the assumptions of the one-way analysis of variance were observed (p>0.05). In addition, the research results showed that between the three groups of ankle functional instability, Coper and healthy in ankle proprioception in plantar flexion (p=0.003) and dorsiflexion (p=0.001), the mean of the functional instability group had more reconstruction error. The results of the Tukey test showed that there was a significant difference between the functional reconstruction error of dorsiflexion and plantarflexion in the functional instability group with the Coper and healthy groups (p<0.05), but no significant difference was observed between the mean of the Cooper and Salem groups (p>0.05).

It seems that athletes with functional instability of the ankle have more angle reconstruction error than the other two groups and as a result have a weaker sense of proprioception. Therefore, sports therapists and rehabilitators should include exercises to proprioception in designing training programs and rehabilitating people with functional instability of the ankle.

Athletes with a history of anterior cruciate ligament reconstruction need to return to sports after completing their medical rehabilitation, but they usually refuse to do so due to several months of absence from sports and fear of re-injury. Therefore, for these people, an ideal training protocol with appropriate intensity should be considered, so that they can prepare to return to sports, mentally and physically. The purpose of this research is to investigate the effect of suspension exercises using TRX (total body resistance exercise) on the fear of re-injury and return to sport criteria in athletes with a history of anterior cruciate ligament reconstruction.

The sample of the present study included 26 male athletes (football and futsal) aged 18 to 30 years with a history of anterior cruciate ligament reconstruction, who were randomly divided into two experimental groups of 13 people (Age 24.54±3.45 years, Height 179.15±4.27 cm, Weight 82.31±6.67 kg, BMI 25.58±1.04) and control (Age 24.62±3.79 years, Height 179.00±3.91 cm, Weight 82.62±10.57 kg, BMI 25.77±2.83). To check the level of fear of re-injury, the Tempa 11 questionnaire was used, and to evaluate the criteria for returning to sports, side jump, 8 jump, and single leg triple jump tests were used. After the pre-test, the athletes did exercises for 6 weeks and at the end, the post-test was performed. The comparison of the mean variables between the two groups in the pre-test and post-test was done using the analysis of covariance test at a significance level of 0.05.

The results showed that 6 weeks of suspension training using TRX led to a significant decrease in the scores of fear of re-injury tests of Tempa 11 (p=0.001), single leg side jump (p=0.001) and single leg 8 jump (p=0.001) and there was a significant increase in the single leg triple jump test score (p=0.001) in the experimental group compared to the control group.

Among the features of TRX trainings are the ease of doing these exercises, affordable cost, and the ability to perform them at any time and place. Also, considering that the results of this research showed that performing TRX trainings can improve the athletes' performance and reduce the fear of re-injury in Tempa 11 tests, side jumps, 8 jumps and single leg triple jumps, so to all trainers Sports and therapists are suggested to use the exercises used in this research to improve the performance and reduce the fear of athletes with a history of anterior cruciate ligament reconstruction.

Ankle sprain is one of the most common sports injuries. While the effects of static constraints in stabilizing the ankle joint are relatively well understood, those of dynamic constraints are less clear and require further investigation. The purpose of this study was to compare kinematic variables of ankle joint in athletes with functional ankle instability, Coper and healthy during running.

75 athletes were randomly divided into 3 groups of functional ankle instability (age: 24.04±4.42 years, height: 182.20±6.63 cm, weight: 73.96±7.06 kg), Coper (age: 25.56±4.96 years, height: 185.44±6.97 cm, weight: 77.44±7.03 kg) and healthy (age: 26.40±4.71 years, height: 183.72±6.52 cm, weight: 74.26±6.56 kg). Subjects were asked to run on a treadmill at a speed of 10 km / h for 30 seconds. Kinematic data were recorded using a 3D optic track camera and then used with MATLAB to construct a dynamic model and analyze the data. To compare three groups, one-way analysis of variance test with a significance level of 0.05 was used.

The present study showed that there was a significant difference in dorsiflexion and ankle inversion between the three groups at the moment of initial contact (P≤0/05). Also, the results of the Toki follow-up test showed that there was no significant difference between the Coper and healthy groups in the dorsiflexion and inversion (P≥0/05).

The results showed that functional ankle instability group had less dorsiflexion and more inversion than Coper and healthy group at the moment of initial contact. There was also no significant difference between Coper and healthy groups in dorsiflexion and inversion. Therefore, athletes' strategy of functional ankle instability has altered and the focus of rehabilitation protocols should be on the kinematics of ankle joint in functional activities to prevent recurrent sprain.