جستجوی مقالات مرتبط با کلیدواژه « chronic ankle instability » در نشریات گروه « پزشکی »

 This study evaluated the effects of neuromuscular training compared with neurofeedback and neuromuscular training on brain waves, foot and ankle ability, and pain intensity of table tennis players with chronic ankle instability.

 This clinical trial study was conducted on 29 table tennis players with chronic ankle instability, which were randomly divided into combined neurofeedback+neuromuscular (Mean±SD age: 21.73±2.60 years, hieght: 173.42±5.57 cm, wieght: 77.10±10.42 kg) and neuromuscular groups (Mean±SD age: 22.14±2.53 years, Mean±SD height: 169.26±6.77 cm, Mean±SD weight:77.95±15.70 kg). ProComp Infiniti System and BioGraph Infiniti version 5 software were used to measure brain waves and perform neurofeedback protocol. The foot and ankle disability questionnaire and the visual analog scale were employed to assess foot and ankle ability and pain intensity, respectively. The rehabilitation protocol was performed for eight weeks. The paired t test and 1-way analysis of covariance were used for the data analyses.

 The paired t test results revealed a significant decrease in the amplitude of theta, alpha, and sensorimotor rhythm (SMR) waves in both groups (P<0.05) and an increase in the amplitude of the beta wave only in the combined group (P<0.05). In addition, ankle ability was significantly increased during daily activities and exercise in both groups (P<0.05). On the other hand, the results of a 1-way analysis of covariance indicated a significant difference between the two groups regarding theta and beta amplitudes and degree of ankle disability during exercise, and the improvement was greater in the combined group (P<0.05).

 According to the results, combined exercises (neuromuscular and neurofeedback) can be used as rehabilitation in table tennis players with chronic ankle instability to correct brain waves, improve leg and ankle ability, and reduce pain.

Although volleyball is a contact sport, there are a high number of injuries in volleyball during training or competitions. Since many jumps are performed during training, it is not surprising that a high number of injuries are caused by jumping and landing. The present study aims to investigate the effect of taping on the feedforward activity of non-dominant leg muscles during single-leg jump-landing in professional volleyball players with chronic ankle instability.

In this study, participants were 13 volleyball players with chronic ankle instability who were selected by a purposive sampling method. Electromyographic activity of peroneus longus, anterior tibialis, gastrocnemius, vastus lateralis, gluteus medius, and rectus femoris muscles of the non-dominant leg during a single-leg jump-landing task following a spike shot before and after taping was evaluated. Root mean square was used to calculate muscle activity before and after taping. The data were analyzed using paired t-test. The significance level was set at 0.05.

The findings showed the significant effect of taping only on maximum feedforward activity (P=0.02) and average feedforward activity (P=0.03) of the peroneus longus muscle. The effect was not statistically significant for other muscles (P>0.05).

  It seems that taping is not useful for improving the feedforward activity of muscles in volleyball players with chronic ankle instability during single-leg jump-landing. Hence, other exercises or methods are recommended for these players during recovery or training.

The present study aims to compare the effects of two types of hopping and strength-balance exercises on the balance and strength of selected muscles in athletes with chronic ankle instability.

Participants were 30 male athletes with chronic ankle instability, who were selected using a purposive sampling method and randomly divided into two groups of hopping and strength-balance exercise. A questionnaire was used to record demographic characteristics and the information about the history of sports. To measure strength, a dynamometer was used. The Standing stork test and Y balance test were used to measure static and dynamic balances, respectively. Analysis of covariance and the Least Significant Difference post hoc test were used to compare the means.

There was a significant difference in the static balance (P<0.001) and the total dynamic balance between the two groups (P<0.001). The strength-balance exercise group in all directions of the Y balance test performed better than the hopping exercise group. Moreover, hip abduction strength (P=0.02) and the inversion (P=0.005) and eversion strengths (P=0.002) of ankle were significantly different between the two groups after training, where the strength-balance group had higher scores. There was no significant difference between the two groups in other factors.

Both hopping and strength-balance exercises can be effective in improving the balance and strength of male athletes with chronic ankle instability, where the strength -balance exercise program seems to be more useful due to its comprehensiveness and given that it emphasizes the improvement of balance, proprioception, trunk strength, and lower limb strength, and can have a greater effect on the fast recovery of athletes.

 Given the high prevalence of functional ankle instability, its primary and secondary costs, and most importantly, the personal suffering of injured people, proposing an effective rehabilitation program is essential. Therefore, the aim of the present study was to review the effectiveness of VR-based interventions in the rehabilitation of patients with ankle instability.

 Articles were searched on the SportDiscus, PubMed, Web of Science, Medline, Scopus, and EMBASE databases without any time limit from the inception to Jun 2021. Selective keywords were virtual reality, ankle instability, and clinical outcomes such as balance, postural control, range of motion, pain, strength, function, and gait function. The Pedro scale was used to evaluate the methodological quality of the selected articles. The reporting of this systematic review was guided according to the standards of the PRISMA statement.

 After removing duplicate and irrelevant articles, the full text of 10 articles was obtained from the databases, and the required information was extracted. The results of studies used within group analysis indicated that VR-based interventions had a significant effect on balance, postural control, and motor and self-report function of people with functional ankle instability. However, there is no significant difference between the effectiveness of VR-based interventions and traditional physiotherapy in terms of effects on balance, postural control, and self-report performance in people with functional ankle instability.

 Although there is no evidence that virtual reality-based interventions are superior to traditional rehabilitation, the results of the present study suggest that virtual reality-based interventions are at least as effective as traditional exercises for people with ankle instability. However, due to the methodological weaknesses of current studies, more detailed studies are needed to evaluate the effectiveness of VR-based interventions for patients with ankle instability.

Objective:

 Identifying the factors affecting the reduction of ankle sprain complications, rapid recovery, and prevention of re-injury after an ankle sprain are essential. Therefore, the present meta-analysis investigates which training modalities have a better effect on the balance and motor function of people with chronic ankle instability.

Materials & Methods :

The relevant articles were identified by searching 8 international databases of MEDLINE/PubMed, Embase/Scopus, LILACS, CINAHL, Central (Cochrane Central Register of Controlled Trials), Web of Science, PEDro, and Google Scholar. This work was also done in Persian databases Magiran, Irandoc, Iranmedex, MedLib, and SID, equivalent to English keywords searched from 8 databases. After collecting the search results, first, the title and then the abstracts of the articles were read. If the articles met the inclusion and exclusion criteria, their results would be used in the review study, otherwise discarded. The search period comprised from the beginning to December 2021. In addition, a manual search and full review of article sources was performed. The exclusion criteria were articles whose statistical population was people other than people with chronic ankle instability, published articles other than English and Persian, and articles that examined the effect of exercise programs on factors other than balance and motor function had paid. Hedges’ effect size (ratio of the mean difference between the two groups to the mixed weight standard deviation) was used for meta-analysis. Heterogeneity between studies was assessed using the I2 index. If the heterogeneity is above 50%, the random effects model method is used, and if it is below 50%, the fixed-effects model method is used. The bias of published studies was assessed using Egger’s test. Comprehensive meta-analysis v.2.0 software was used to analyze the data.

Results :

After reviewing the full text of the found articles, 21 articles using 24 training protocols were selected. The final articles were divided into two categories for analysis: articles comparing neuromuscular exercises with other exercises and articles comparing new and combined balance exercises with other exercises with traditional balance exercises. By a superficial qualitative review of articles with the PEDro tool, the average scores that articles received from this scale were higher than 7, which shows that the articles used for the meta-analysis of this study are of high quality and the results of these studies are reliable.

Conclusion :

The results of studies showed that neuromuscular training has a better effect on static and dynamic balance in people with chronic ankle instability than other training protocols. However, there was no significant difference between the two types of training groups in motor performance. The results of studies also showed that balance-combination exercises, as well as new methods of balance exercises compared to traditional balance exercises, have a more significant effect on static balance and motor function of people with chronic ankle instability. However, no significant difference between the two types of training groups was observed in the dynamic balance. Also, the effect of new combined-balance exercises on dynamic balance was better than traditional balance exercises. It seems that the usefulness of balance-combination exercises and performing balance exercises with new methods is more useful than other training protocols on balance and postural control of people with chronic ankle instability.

With respect to the prevalence of chronic ankle instability and adverse consequences, such as neuromuscular dysfunction of the proximal joints, the implementation of preventive proceeding in the proximal limb of the ankle is very necessary. Therefore, the present study was done to investigate the effect of six weeks of plyometric training with feedback on maximum knee flexion and maximum vertical GRF on the drop landing technique of male basketball players with chronic ankle instability.

The present study has a quasi-experimental research design. Twenty-four male basketball players with chronic ankle instability participated in this study. After identifying individuals using the Cumberland Ankle Instability Tool, athletes were divided into two experimental groups (n=12) and a control (n=12) group. Evaluation of maximum knee flexion and maximum vertical ground reaction force was conducted using ten cameras and two distinct forces, respectively. The participants in the experimental groups performed plyometric training with feedback for six weeks. After examining the normality of data by the Shapiro-Wilk test, a paired t-test was used to compare differences within groups and an independent t-test was used to compare differences between groups.

The results showed that six weeks of plyometric training with feedback on maximum knee flexion and maximum vertical GRF on drop landing technique of male basketball players with chronic ankle instability significantly increased maximum knee flexion and reduced the maximum vertical GRF (P≤0.05).

Adding plyometric training with feedback to the chronic ankle instability basketball program to prevent subsequent damage later in the proximal limb is recommended.

The aim of the present study was to investigate the impact of chronic ankle instability on biomechanical parameters of gait initiation in semipro football players.

A total of 26 young were divided into two equal groups of normal and injured. To measure the biomechanical parameters, motion analysis system (Qualisys model with eight cameras) and two force plate system (Kistler 9286A) were used. We measured istance, time, and speed of gait initiation, swing and double stance time, speed of clearing the swing limb from ground, hip, knee and ankle range of motion and center of mass displacement in medio-lateral, anteroposterior, and vertical directions in  the current study.

The results showed significant increase in the knee (p = 0.016) flexion range of motion and significant decrease in center of mass displacement in vertical ((p=0.00) and medio-lateral (p=0.00) directions of gait initiation.

The results of our study did not show any significant change in injured joint and many other parameters. Thus, considering the significant changes that occur in adjacent joint, it is recommended that rehabilitation specialists use global training protocol for both the injured and non-injured limbs of chronic ankle instability patients to prevent motor control change and to restore proper motor control following a peripheral joint injury.

Ankle sprain is one of the most commonly damaged lower extremities. More than 70% of people with ankle sprain experience chronic ankle instability. However, some people are well adapted to this damage (Coper people) and do not suffer from chronic ankle instability. The aim of this study was to compare the balance in healthy athletes with chronic ankle instability and coper during one leg standing.

13 athletes with chronic ankle instability with mean age of 22.3 ± 2.21 years, weight 57.07 ± 7.48 kg and height 166.76 ± 5.8 cm, 10 Cooper athletes with an average age of 1.37 ± 21.9  years, weigh 56.5 ± 5.78 kg and height 165.9 ± 7.4 cm and 11 healthy athletes with an average age of 24.44 ± 4.3 years, weight 57 kg ± 97.7 kg, and The height of 165.72 ± 27.57 cm was participated in this study. Each participant for 20 seconds maintained their single-foot balance on the 3rd and 12th balance points of Biodex. The results of the study were analyzed using MANOVA at a significant level of 95% and alpha less than or equal to 0.05.

The results showed that the balance index did not differ significantly between healthy and Coper Groups However, in the group of chronic ankle instability, the internal-external balance index and the overall index were significantly higher than the healthy group (p≤0/05).

The chronic ankle instability group has poor balance, especially in the internal-external direction, which can be due to damage to the ankle ligament and some deep receptors located on the ankle ligament of the ankle.

Chronic ankle instability is a common injury in athletes that leads to postural control disorders. The aim of this study was to compare the effect of external focus of attention and postural task alone on center of pressure sway in athletes with chronic ankle instability and healthy athletes during dual task training.

This cross-sectional study was performed on 29 male volleyball athletes with a referral from a specialist and 29 healthy athletes matched with the affected group in terms of age, height and weight. Subjects in the two groups were on the balance board with single-leg and double-leg stance, standing in the center of the force plate for 60 seconds and performing postural tasks alone and with external focus. The degree of displacement of the pressure center was measured to investigate the variables of standard deviation of amplitude and mean velocity.

In double-leg stance, standard deviation of amplitude in medio-lateral (14.2±2.1) and anterior-posterior (16.7±3.3), mean velocity in medio-lateral (39.2±9.8) and anterior-posterior (40.7 ± 6.1) directions in patients during external focus were significantly less than the standard deviation of amplitude in medio-lateral (12.2±1.5) and anterior-posterior (13.9±2.4), mean velocity in medio-lateral (46.2±13.1) and anterior-posterior (48.4±9.6) directions during the single task. In single-leg stance, standard deviation of amplitude in medio-lateral (16.1±2.1) and anterior-posterior (13.1±1.7), mean velocity in medio-lateral (42.2±13.3) and anterior-posterior (40.7±8.6) directions in patients during external focus were significantly less than the standard deviation of amplitude in medio-lateral (11.1±2.1) and anterior-posterior (17.4±3.3), mean velocity in medio-lateral (47.8±16.6) and anterior-posterior (55.2±17.4) directions during the single task.

The results of the study showed that external focus task leads to distraction from postural control and reduces postural sway in athletes with chronic ankle instability.

Considering relationship between chronic ankle instability and postural instability, and the importance of the understanding of athletes with chronic instability for rehabilitation clinics, this study was conducted to evaluate functional tests as a distinctive tools in individuals with and without chronic ankle instability.

This case-control study was conduct on 40 athletes (20 athletes with chronic ankle injury and 20 healthy athletes). In order to distinguish between athletes with chronic ankle instability and healthy athletes, they are participated in five functional tests including; Latin-Latin test, side-to-face tests, Lilli square test, Zigzag jump test for distance, single jump test for distance. For statistical analysis, test-retest, correlation coefficient and independent t-test were used at the significant level of P <0.05.

Athletes with chronic ankle instability compared to healthy athletes showed weaker function. There was a significant difference between participants with chronic ankle instability and healthy participants in performing functional tests (P<0.05). Significant correlation was found between ankle instability and eight Latin (ICC = 0.67, p <0.001), bilateral mutations (ICC = 0.75, P<0.001), square jump (ICC=0.51, P <0.001), zigzag jump (ICC = 0.82, P <0.001).

It seems that functional tests (Latin eight test, side leak test, Lilli square test, Zigzag jump test for distance, single jump test for distance) can be good tools to identify people with chronic ankle instability from healthy individuals.

Considering the high prevalence of sprain and ankle instability and the disturbing side effects, like decreased stability and increased posture vacillation, it is necessary to perform preventive exercises to avoid such injuries. Thus, the goal of the present research was analyzing the effect of eightweeks of combined exercises on the time of accessing to stability and replacement of press center of active men with chronic ankle instability An experimental study was performed on 24 active men with functional ankle instability. Initial screening and identifying qualified athletes were done using Ankle Disability Questionnaire and Foot and Ankle Disability Index. Athletes were divided into two groups of Experimental (n= 12) and control (n= 12). Kinetic variables were evaluated using force platform. Experimental group performed the resistance exercises for eight weeks. For data analysis and statistical analysis, after using Shapirovailk test to normalize the data, dependent t-test was run to check inter group performance and independent t-tests were run to evaluate between group performance at a significance level of 0.05%. The results of statistical tests showed that the combined exercises had a significant effect on the time to reach stability and the rate of displacement of the active men’s pressure center with functional ankle instability (P≤0/05). According to the findings, it is suggested that comprehensive combined training programs be used in the rehabilitation programs of male individuals suffering from functional ankle instability to ease restrictions caused by FAI, like balance and stability defects.

Ankle joint is known as one of the most vulnerable joints of the body. The aim of the present study was to compare the impacts and sustainabilities of NASM and combined excersices (neuromuscular and core stability) on the functional charactristics and balance of individuals with unilateral chronic ankle injury. A total of 36 male athlete students suffering from chronic ankle instability voluntarily participated in the present study and were randomly divided into three groups of 12: NASM excersices, combined training, and the control group. All the participants’ performance characteristics and dynamic balance were evaluated prior to, after, and four weeks after the exercises. To evaluate the functional characteristics, we used Side-to-Side Hop Test, Figure-eight Hop Test, Triple Hop Test, and questionnaires measuring the ability of the foot and ankle in sports and daily activities and to evaluate the dynamic balance, the balance test Y was used. Then, the NASM and combined groups performed the relevant exercises. The results showed that both NASM and compound exercises caused improvement in the dependent variables. Also, NASM exercises had lasting impacts four weeks after the exercise protocol in indicators of figure-eight hop test and the ability of ankle and foot test. Also, combination exercise had lasting effects observed in side-to-side hop test, figure-eight hop test, and the ability of ankle and foot scale. The results also showed that compound exercises, as compared with NASM exercises, were more effective as observed in the ability of the ankle and foot test. Doing eight weeks of combined training (neuromuscular and core stability) was observed to be significantly more effective, compared with NASM training, in the performance and postural control in patients with chronic ankle instability.

Ankle sprain is one of the most common injuries among the athletes. According to some research, balance deficit and ankle instability are reported in those with chronic ankle instability. The aim of this study was studying the effect of 6 weeks' new balance training in the land and water on balance, instability index and pain in the athletes with chronic ankle instability. In this semi-experimental study, 30 athletes with chronic ankle instability were selected with purposeful sampling and randomly were placed in two groups (aquatic and land therapy). Pain, instability, the static and semi-static balance were measured pre and post training. The intervention included the six-week modern balance training in the water and land. To analyze the data, SPSS (22) software was used. to compare the results of the pre-test and post-test, paired sample t-test and to compare the means between two groups, the independent sample t-test was used. The significance level was 0.05. The results showed that both experimental groups had a significant difference in the instability index (P=0.001), static (P=0.001) and semi-dynamic (P=0.002) balance compared to the pre-intervention stage, but there was no significant difference in pain variable (P=0.38). However, comparison of the means of the studied variables between the two groups did not show a significant difference in the instability index (P=0.1), static (P=0.8, P=0.6), semi-dynamic (P=0.9, P=0.5) and pain (P=0.8). Many clinicians propose water-based exercises in the ankle injured athletes, which are costly in addition to time-consuming. The results of this study suggest that the patients with chronic ankle instability can rehabilitate by use of available tools, even at home

Today, the benefits of balance exercise and taping are considered in the prevention and improvement of sports injuries, especially in sprains and dislocations in imbalance as well as defects of proprioceptive. The purpose of the current study was to evaluate the effect of six weeks of balance exercises protocol, taping, and mixed on proprioception and functional performance in teenager male volleyball players with chronic ankle instability.
A total of 45 teenager male volleyball players with chronic ankle instability participated in the study. Eligibility of ankle instability was assessed using Cumberland Ankle Instability Tool (CAIT) and anterior drawer test. The Biodex system was used for measuring proprioception (ICC=0/99) and Eight Hop Test was used for conducted functional performance. The covariance (ANCOVA) and post hoc Sidac tests were used for statistical analysis at P=0/05.
The results in all groups showed significant differences between pre-test and post-test in proprioception 10 ° dorsiflexion, 20 ° plantar flexion, and functional performance (p Considering the extremely large effect size of the balance and combined groups, it is recommended that these program be used to improve ankle proprioception and functional performance of teenager male volleyball players with chronic ankle instability.

Objective Lateral ankle sprains (LAS) are common among athletes and can result in a high rate of reinjury and Chronic Ankle Instability (CAI). CAI can affect dynamic stability in athletes. On the other hand, fatigue can disrupt dynamic stability in injured as well as healthy athletes. Recent studies support the use of taping and braces in subjects with chronic ankle instability. Nonetheless, it is not known if applying ankle taping can improve dynamic stability in fatigued people. So the goal of this research is to study the effect of ankle taping and fatigue on dynamic stability in female athletes with and without chronic ankle instability.
Materials & Methods Twenty female athletes including 10 subjects with chronic ankle instability (age 22.02±1.98 years, height 163.80±2.74 cm, weight 58.68±7.10 kg, FADI 80.78±1.03% and FADI Sport 65.10±1.75%) and 10 healthy subjects (age 21.70±0.67 years, height 162.90±5.06 cm, weight 59.10±7.04 kg, FADI and FADI Sport 100%) participated in two separate testing sessions. Different conditions (no taping and with closed basket-weave ankle taping) were applied at each session . Three trials of a jump landing task were performed under each condition before and after induced functional fatigue. The jump-landing task involved a single-leg landing onto a force plate from a height equivalent to 50 percent of each participant’s maximal jump height and from a starting position 70 cm from the center of the force plate. The functional fatigue protocol comprised three stations: Modified Southeast Missouri (SEMO) agility drill, stationary lunges, and quick jumps. The participants continued to run through each station until the time to finish the stations increased by 50% compared with their baseline timed runs. Time to stabilization was measured in the anterior-posterior (APTTS), medial-lateral (MLTTS) and vertical directions. Three separate repeated-measure analyses of variance with two within-subjects factor (condition and time) were performed for each dependent variable in each group..
Results The results of this investigation revealed that in healthy athletes group, the difference between MLTTS and vertical TTS was statistically significant {f=7.52, P=0.001}, {f=9.69, P=0.004}. Bonferroni post hoc testing revealed faster pretest MLTTS than posttest for taping condition and faster pretest vertical TTS than posttest for no taping condition. In injured athletes group, the difference between MLTTS and vertical TTS was statistically significant {f=10.57, P=0.001}, {f=14.27, P=0.001}. This testing also revealed faster pretest MLTTS than posttest for no taping condition, faster pretest vertical TTS than posttest for both conditions, and faster vertical TTS after taping than before taping.
Conclusion In the athletes with chronic ankle instability, taping without fatigue improved dynamic balance in the vertical direction. Taping after fatigue could not improve dynamic stability in the athletes with and without chronic ankle instability. Future researchers should examine injured and uninjured participants tested under these conditions to determine if these results are useful in selecting appropriate prophylactic method that can treat or prevent injury to the ankle during functional activities.