kinetic chain
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2022 ◽  
Vol 17 (1) ◽  
Author(s):  
Elisa Raulino Silva ◽  
Nicola Maffulli ◽  
Filippo Migliorini ◽  
Gilmar Moraes Santos ◽  
Fábio Sprada de Menezes ◽  
...  

Abstract Background The shoulder joint is the most commonly injured joint in CrossFit practitioners, because of the high intensity and loads associated with this sport. Despite the large number of clinical cases, there is a shortage of studies that investigate influence of biomechanical aspects of upper limbs' injuries on CrossFit practitioners. This study hypothesized that there would be a difference in function, strength, and muscle activation between Crossfit practitioners with and without shoulder pain. Methods We divided 79 Crossfit practitioners into two groups according to whether they reported pain (n = 29) or no pain (n = 50) in the shoulder during Crossfit training. Muscle function, strength, and activation were assessed using the Disability Arm, Shoulder and Hand function questionnaire, Upper Quarter Y Balance Test and Closed Kinetic Chain Upper Extremity Stability Test shoulder tests, isometric muscle strength assessment by manual dynamometry and muscle activation by surface electromyography and pain report. Results The function based on questionnaire was associated with pain (p = 0.004). We observed a statistically significant difference between the two groups only in the surface electromyography activity of the lower trapezius, and in the variables of shoulder pain and function (p = 0.038). Conclusion Crossfit practitioners with shoulder pain occurring during training showed good function and stability of the shoulder joint, but there was a reduction in the activation of stabilizing muscles, especially the lower trapezius. Trial registration Registro Brasileiro de Ensaios Clinico (Brasilian National Registry) with the ID: RBR-2gycyv.


2022 ◽  
Vol 12 (2) ◽  
pp. 830
Author(s):  
Pedro Harry-Leite ◽  
Manuel Paquete ◽  
José Teixeira ◽  
Miguel Santos ◽  
José Sousa ◽  
...  

This study aimed to compare the acute effect of a proprioceptive exercise session and a non-specific exercise session on knee position sense, and the static and dynamic balance of athletes. Sixty male athletes (19.4 ± 1.2 years) participated in a within-subjects repeated-measures study. Knee position sense in closed kinetic chain, and static (BESS test) and dynamic balance (Y-balance test) were measured before and after two exercise sessions, consisting of 10 min of non-specific exercise in a cycle-ergometer or proprioceptive exercise with an unstable platform. Overall, both exercise sessions significantly improved knee position sense, BESS score, and YBT composite score, and no differences were detected between proprioceptive and non-specific sessions (knee position sense, −6.9 ± 65.2% vs. −11.5 ± 75.0%, p = 0.680; BESS, −19.3 ± 47.7% vs. −29.03 ± 23.5%, p = 0.121; YBT, 2.6 ± 2.7% vs. 2.2 ± 2.2%, p = 0.305). Twenty athletes did not improve knee position sense after the exercise session (non-responders). When analyzing only the exercise responders, both sessions improved knee position sense, but the improvement was greater after the proprioceptive exercise session (56.4 ± 25.6% vs. 43.8 ± 18.9%, p = 0.023). In conclusion, a single proprioceptive, as well as non-specific, exercise session increased knee position sense and balance. The proprioceptive exercise seems to be more effective in improving joint position sense when considering only athletes who respond to the intervention.


Author(s):  
Anna Luiza Teixeira ◽  
Anamaria Siriani de Oliveira ◽  
Nathália Alves Rodrigues ◽  
Guilherme Augusto Santos Bueno ◽  
Maria Eduarda Oliveira Novais ◽  
...  

Author(s):  
Eleftherios PARASKEVOPOULOS ◽  
Theocharis SIMEONIDIS ◽  
Charilaos TSOLAKIS ◽  
Panagiotis KOULOUVARIS ◽  
Maria PAPANDREOU

2021 ◽  
Vol 33 (6) ◽  
pp. 278-285
Author(s):  
Song Yeon Yi ◽  
Young Ju Kim ◽  
Dong Yeop Lee ◽  
Jae Ho Yu ◽  
Jin Seop Kim ◽  
...  

2021 ◽  
Vol 10 (2) ◽  
pp. 671-675
Author(s):  
Abdul Herman Syah Thalib ◽  
Sunarti Sunarti

Introduction: The prevalence of osteoarthritis increases with age with functional impairment. With Closed Kinetic Chain Exercise (CKCE) patients are able to increase movement in the knee area. Objective: To provide an overview of various evidence from previous studies regarding the effectiveness of Closed Kinetic Chain Exercise in improving functional ability in patients with knee osteoarthritis. Methods: Conducted a literature review by searching through electronic databases namely Garuda, Pubmed, and Google Scholar, and obtained 5 relevant research articles from 2016-2021 based on inclusion and exclusion criteria. Results: After being given closed kinetic chain exercise, it was found that there was a decrease in complaints such as pain and an increase in the strength of functional movement in patients with knee osteoarthritis. Conclusion: closed kinetic chain exercise is effective in improving functional ability in patients with knee osteoarthritis


2021 ◽  
pp. 194173812110568
Author(s):  
Alexander W. Brinlee ◽  
Scott B. Dickenson ◽  
Airelle Hunter-Giordano ◽  
Lynn Snyder-Mackler

Context: Anterior cruciate ligament (ACL) reconstruction (ACLR) and postoperative rehabilitation continues to be a multidisciplinary focus in both research and clinical environments. Recent research on ACLR warrants a reexamination of clinicians’ current rehabilitation practices to optimize the strikingly variable clinical outcomes after ACLR and return to sport. The purpose of the article and updated guidelines is to use contemporary evidence to systematically revisit our practice guidelines and validate our clinical milestones with data from our university-based practice. Evidence Acquisition: Using the PubMed search engine, articles that reported on ACLR rehabilitation and protocols, guidelines, graft type, healing and strain, return to sport, psychological considerations, and secondary injury prevention published from 1979 to 2020 were identified using the search terms ACLR protocols, guidelines, ACLR rehabilitation, ACL graft, ACL open kinetic chain (OKC) exercise and closed kinetic chain (CKC) exercise, ACLR return to sport, ACLR psychological factors, and ACL injury prevention. Study Design: Clinical review. Level of Evidence: Level 5. Results: Clinical milestones after ACLR were validated using clinical data collected from 2013 to 2017 at a university-based practice. Variables including knee joint range of motion, effusion, Knee Outcome Survey–Activities of Daily Living Scale, and quadriceps strength index were tracked throughout rehabilitation and analyzed to help inform an updated ACLR rehabilitation guideline. Conclusion: Incorporating the latest research, combined with direct clinical data, provides a current, realistic, and clinically benchmarked strategy for ACLR rehabilitation. Commonly held clinical beliefs regarding rehabilitation after ACL injury must be challenged by the latest research to improve patient outcomes and decrease the risk of reinjury. Key updates to the practice guidelines include the use of frequent and accurate quadriceps strength testing, delayed return-to-sport timeline, immediate use of open kinetic chain exercise, criterion-based progressions for running, sprinting, plyometrics, agility, cutting/pivoting, return to competition, and the inclusion of a secondary prevention program after return to sport. Strength of Recommendation Taxonomy (SORT): B.


2021 ◽  
Vol 2130 (1) ◽  
pp. 012009
Author(s):  
R Karpiński ◽  
P Krakowski ◽  
J Jonak ◽  
A Machrowska ◽  
M Maciejewski ◽  
...  

Abstract Osteoarthritis (OA) is currently the most generic form of joint disease. It is a complex process in which degenerative changes occur in the articular cartilage [AC], subchondral bone, and synovial membrane and can lead to permanent joint failure. The primary and most commonly used method of diagnosing degenerative changes is classic radiography. Magnetic resonance imaging (MRI) may be used to assess the extent of damage to joint surfaces, but this method is limited by the availability of specialised equipment and the excessive cost of the examination. Arthroscopy, an invasive procedure, is considered the “gold standard” in joint diagnosis. The occurrence of degenerative changes is closely related to the friction and lubrication processes within the joint. The main causes of osteoarthritis are a change or lack of synovial fluid, deformation of the joint bones, local damage to the articular cartilage, and a change in the mechanical properties of the articular cartilage due to water loss from the damaged superficial layer. An alternative, non-invasive method that allows for a delicate assessment of the condition of moving joints is vibroarthrography (VAG). The analysis of vibroacoustic signals generated by moving joint surfaces has an immense potential in the non-invasive assessment of the degree of damage to articular cartilage, meniscus and ligaments and the general diagnosis of degenerative diseases. The purpose of this study is to analyse and statistically compare the basic characteristics of vibroacoustic signals recorded with a CM-01B contact microphone placed on the patella for motion in the 90°–0°–90° range in a closed kinetic chain (CKC) in a control group (HC) and a group of patients diagnosed with osteoarthritis (OA), qualified for the knee alloplasty.


Author(s):  
Simran Narang ◽  
Deepali Patil

Aims: During regular training, players sustain injuries on a regular basis. Based on the fact that badminton isn't seem at all a contact sport the majority of ailments are caused by overuse. A participant must perform a variety of quick yet repeated shoulder actions and repetitive motions put tension mostly on tissues with time, putting them at risk of damage. Current study was done to compare the effects of Ballistic Six training and Theraband exercises on shoulder strength, agility, speed and function in novice badminton player. Study Design: Randomized Controlled Trial. Place and Duration of Study: Sport clubs were selected according to feasibility in Wardha, from July 2020 to June 2021. Methodology: 40 subjects of both gender aged between 18 to 25 years were selected who have being playing badminton for more than a year. Subjects were randomized into two groups, Group A (Ballistic Six Exercise group) and Group B (Theraband exercise group). Assessments done were sitting medicine ball throw test (SMBT) for shoulder strength, closed kinetic chain upper extremity stability test (CKUCEST) for agility, plate tapping test (PTT) for speed and Kerlan Jobe Orthopaedic Clinical Score (KJOC) for shoulder function. Assessments were done at baseline, post 8 weeks of training and at the end of 6 months. Results: Significant increase in mean sitting medicine ball throw test SMBT, CKUCEST, PTT and KJOC score in both group but Group A showed more improvement than Group B. Conclusion: Study concluded that adding of Ballisitic Six plyometric training for novice badminton players would increase the shoulder strength, agility, speed and function than the theraband exercises.


Author(s):  
Anna Gabriel ◽  
Andreas Konrad ◽  
Anna Roidl ◽  
Jennifer Queisser ◽  
Robert Schleip ◽  
...  

Prior studies have shown that self- and manual massage (SMM) increases flexibility in non-adjacent body areas. It is unclear whether this also influences performance in terms of force generation. Therefore, this study investigated the effect of SMM on the plantar surface on performance in the dorsal kinetic chain. Seventeen young participants took part in this within-subject non-randomized controlled study. SMM was applied on the plantar surface of the dominant leg, but not on the non-dominant leg. A functional performance test of the dorsal kinetic chain, the Bunkie Test, was conducted before and after the intervention. We measured the performance in seconds for the so-called posterior power line (PPL) and the posterior stabilizing line (PSL). The performance of the dominant leg in the Bunkie Test decreased significantly by 17.2% from (mean ± SD) 33.1 ± 9.9 s to 27.4 ± 11.1 s for the PPL and by 16.3% from 27.6 ± 9.8 s to 23.1 ± 11.7 s for the PSL. This is in contrast to the non-dominant leg where performance increased significantly by 5.1% from 29.7 ± 9.6 s to 31.1 ± 8.9 s for the PPL and by 3.1% from 25.7 ± 1.5 s to 26.5 ± 1.7 s for the PSL. SMM interventions on the plantar surface might influence the performance in the dorsal kinetic chain.


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