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Showing 1-6 of 6 trials
NCT07485530
This three-year research project aims to test the hypothesis that strain and displacement characteristics of human soft tissues are influenced by (1) habitual physical activity, (2) functional impairment, and (3) training interventions. Over the three years, the ulnar collateral ligament of the elbow, the ankle tendon, and the hamstring muscles will be investigated sequentially. Ultrasound speckle-tracking techniques will be employed to verify these hypotheses and to provide a basis for clinical risk assessment of injury, development of therapeutic strategies, and evaluation of rehabilitation outcomes. In the first year, strain and displacement of the medial ulnar collateral ligament (MUCL) in both longitudinal and transverse directions during passive isokinetic elbow valgus loading will be analyzed in baseball pitchers at high and low injury risk and in healthy controls. The results will be compared with ultrasonic shear-wave elastography. Participants will then undergo an 8-week low- to moderate-intensity blood-flow restriction resistance training program. This phase is expected to characterize ligament mechanical adaptations to long-term sports training, elucidate the relationship between such adaptations and injury risk, and evaluate the effects of resistance training on enhancing medial elbow joint stability. In the second year, individuals with posterior tibial tendon dysfunction and healthy controls will be examined. Longitudinal strain and displacement, as well as transverse rotation and displacement of the tibialis posterior tendon during active ankle movements will be quantified and compared with shear-wave elastography measurements. These results are expected to clarify the relationship between tendon strain-displacement behavior and tendon dysfunction, provide mechanistic insights into tendon pathology, and inform optimal therapeutic strategies. In the third year, patients following anterior cruciate ligament (ACL) reconstruction will be investigated. Longitudinal strain and displacement of the hamstring graft donor site, specifically the semitendinosus muscle-tendon unit, following eccentric training will be assessed and compared with shear-wave elastography and electromyography. This phase is expected to characterize post-harvest semitendinosus muscle activity patterns and their associations with postoperative muscle strength deficits. By integrating findings across the three phases, the anticipated clinical implications of this project include determining whether: 1. adaptive responses of ligaments to repetitive tensile loading during long-term sports participation (including strain behavior and mechanical properties) can serve as screening indicators for injury risk, and evaluating the effects of blood-flow restriction resistance training in these populations; 2. three-dimensional strain, displacement, and rotation of tendons in response to muscle contraction and joint motion are associated with tendon dysfunction; and 3. strain and displacement characteristics of the semitendinosus muscle (in relation to muscle recruitment) can be improved through postoperative functional training following its use as a graft source.
NCT06762392
The goal of this clinical trial is to evaluate the effectiveness of adding Blood Flow Restriction (BFR) therapy to a standardized rehabilitation protocol in patients undergoing postoperative rehabilitation following anterior cruciate ligament (ACL) repair surgery. The main questions it aims to answer are: Does combining BFR therapy with a standardized rehabilitation protocol improve functional recovery compared to rehabilitation alone? Does the addition of BFR therapy enhance muscle strength and reduce recovery time in patients after ACL repair surgery? Participants will undergo their assigned rehabilitation protocol and will be assessed prior to and after the intervention to determine if the addition of BFR therapy to the standard rehabilitation programme significantly improves functional recovery, muscle strength, and overall rehabilitation outcomes following ACL repair surgery.
NCT07328139
The main purpose of this study is to evaluate and compare the effects of an 8-week core stabilization exercise program on balance, trunk muscle endurance, and lower body strength. The study includes two groups of participants: 15 individuals who have had Anterior Cruciate Ligament (ACL) reconstruction surgery and 15 healthy individuals. Both groups will perform the same core stabilization exercises for 8 weeks, twice a week, under the supervision of a physiotherapist. The goal is to determine if this exercise program improves balance and core strength in people who have had ACL surgery and to compare these results with those of healthy individuals performing the same exercises.
NCT06845150
The goal of this clinical trial is to investigate changes in cognitive and physical performance after 10 weeks of dual or single task training in anterior cruciate ligament (ACL) reconstructed individuals. The main questions it aims to answer are: * Does cognitive performance in ACL reconstructed individuals change after multiple training sessions incorporating single versus dual-task? * Does physical performance and intrinsic motivation for training change over the course of 10 weeks when performing single versus dual-task training sessions? * What movement patterns do ACL reconstructed individuals show during a dual-task training in an immersive environment? Researchers will compare a combined dual-task training (combined physical and cognitive training) to a single task training (physical and cognitive training separately) to see if there are changes on cognitive performance depending on the training type. Participants will: * Perform dual-task or single task training twice per week for 10 weeks * Visit the clinic before and after the training period for tests * Visit the movement laboratory once for analysis of movement patterns
NCT06818201
Anterior Cruciate Ligament (ACL) is a prevalent injury, particularly among young and physically active individuals. The efficacy of transcranial direct current stimulation (tDCS) and exercise-based rehabilitation on neuromuscular control in post-ACL reconstruction patients is evaluated, and these techniques are combined.
NCT07128602
After knee surgery for a torn ACL, many women struggle with weak thigh muscles for years, partly due to reduced brain signals to these muscles. Our research tests a new approach to improve recovery by using low-level brain stimulation to boost these signals. The investigators will study 42 women, aged 18-35, who had ACL surgery. They'll be split into two groups: one receiving real brain stimulation and another getting a placebo, both during thigh-strengthening exercises. Over six sessions, the investigators measure thigh muscle strength, speed, and steadiness, plus two brain signal measures, using special equipment. The investigators will also check if stronger brain signals lead to better muscle performance, especially in women. Our goal is to show that this new method strengthens thigh muscles better than standard rehab, helping women recover better after surgery. If successful, this could improve physical therapy for women recovering from ACL surgery, making daily activities and return to sport easier.