1,721,073 research outputs found
Algemene principes voor de preventie van sportletsels. Een benadering gericht op de individuele atleet vanuit kinesitherapeutisch oogpunt
No full textAlgemene principes voor de preventie van sportletsels. Een benadering gericht op de individuele atleet vanuit kinesitherapeutisch oogpunt
No full textPreliminary Evidence That Taping Does Not Optimize Joint Coupling of the Foot and Ankle Joints in Patients with Chronic Ankle Instability
No full textBACKGROUND: Foot-ankle motion is affected by chronic ankle instability (CAI) in terms of altered kinematics. This study focuses on multisegmental foot-ankle motion and joint coupling in barefoot and taped CAI patients during the three subphases of stance at running. METHODS: Foot segmental motion data of 12 controls and 15 CAI participants during running with a heel strike pattern were collected through gait analysis. CAI participants performed running trials in three conditions: barefoot running, and running with high-dye and low-dye taping. Dependent variables were the range of motion (RoM) occurring at the different inter-segment angles as well as the cross-correlation coefficients between predetermined segments. RESULTS: There were no significant RoM differences for barefoot running between CAI patients and controls. In taped conditions, the first two subphases only showed RoM changes at the midfoot without apparent RoM reduction compared to the barefoot CAI condition. In the last subphase there was limited RoM reduction at the mid- and rearfoot. Cross-correlation coefficients highlighted a tendency towards weaker joint coupling in the barefoot CAI condition compared to the controls. Joint coupling within the taped CAI conditions did not show optimization compared to the barefoot CAI condition. CONCLUSIONS: RoM was not significantly changed for barefoot running between CAI patients and controls. In taped conditions, there was no distinct tendency towards lower mean RoM values due to the mechanical restraints of taping. Joint coupling in CAI patients was not optimized by taping.sponsorship: This research was funded in part by a clinical research Grant of the Belgische Vereniging voor Orthopedie en Traumatologie (BVOT). (clinical research Grant of the Belgische Vereniging voor Orthopedie en Traumatologie (BVOT))status: Publishe
The assessment of movement health in clinical practice: a multidimensional perspective
No full textThis masterclass takes a multidimensional approach to movement assessment in clinical practice. It seeks to provide innovative views on both emerging and more established methods of assessing movement within the world of movement health, injury prevention and rehabilitation. A historical perspective of the value and complexity of human movement, the role of a physical therapist in function of movement health evaluation across the entire lifespan and a critical appraisal of the current evidence-based approach to identify individual relevant movement patterns is presented. To assist a physical therapist in their role as a movement system specialist, a clinical-oriented overview of current movement-based approaches is proposed within this multidimensional perspective to facilitate the translation of science into practice and vice versa. A Movement Evaluation Model is presented and focuses on the measurable movement outcome of resultants on numerous interactions of individual, environmental and task constraints. The model blends the analysis of preferred movement strategies with a battery of cognitive movement control tests to assist clinical judgement as to how to optimize movement health across an individual lifespan.</p
Variabiliteit van oppervlakte electromyografie tijdens crawlzwemmen
No full text1. Introduction and backgroundSwimming is one of the most popular forms of physical activity for persons with a disability as it has important advantages for this population. For some, activity in water has a therapeutic or recreational goal. Others choose to move further to a competitive level. Competition for persons with loco-motor disabilities is organized under a functional classification system in which swimmers with various impairments compete against one anotherin one of 10 classes. The purpose of classification is to minimise the impact of impairment on the outcome of competition, so that athletes whosucceed in competition are those with best anthropometry, physiology and psychology and who have enhanced them to best effect. The vast majority of studies in Paralympic swimming have been related to classification. As Paralympic swimming matured, researchers concluded that the current functional classification system is fair, especially in sprint freestyle events. These conclusions however, are based on studies of end race results only (or derivates of end results). Furthermore, although the functional classification system combines dry land musculoskeletal assessment with a point system, the final decision is taken after a water based assessment depending largely on expert opinion. To address this issue, the International Paralympic Committee has begun a research project tofurther develop valid and reliable swimming specific measures of the impact of impairment on Paralympic swimming.The first study in this project aims to follow up on previous research. In the second and third study, two swimspecific measures will be examined.1. Swim speed is the resultant of propulsion and drag forces. If the purpose of classification is to estimate potential performance from a series of uncomplicated tests, the measurement of passive drag couldbe of interest. This test is a standardized method of measurement in which little skill is involved but where deliberate misrepresentation is possible and must be dealt with. 2. EMG measurements have been used for many years in competitive swimming to describe swimming technique, fatigue and causes of injuries. Differences in muscle activity could distinguish between Paralympic and Able bodied swimmers and even between classes. Muscle recruitment could also be used as a control measure during passive drag testing to counter deliberate misrepresentation.2. General hypothesis and specific aims General hypothesis : EMG can be used as a control measure during passive drag testing.As stated above, the measurement of passive drag is a potential valid and reliable measure for classification. A swimmer can alter his/her passive drag by activating certain muscles. In a classification setting, this could be considered as deliberate misrepresentation and must be countered. EMG can be used to ascertain the swimmer is passive (relaxed) during the test. Step 1No type of impairment dominates the opportunity towin a medal, or advance to the finals within the current functional classification system in freestyle events.If this hypothesis is rejected, the fairness of the current classification system can be questioned and the search for a new method of classification, not only based on expert opinion, but also on valid and reliable swimming specific measures, is justified.The second aim of this study is to follow up on the study of Wu & Williams, by including statistics from the last 3 Paralympic Games.The third aim of this study is to define the distribution of the most prominent impairment groups in each functional class to determine participant inclusion in study 3.Step 2There is no difference in muscle activity during front crawl swimming between single arm amputee S9 swimmers and single leg amputee S9swimmers.The aims of this study are to: 1. confirm whether the wireless EMG equipment is valid and reliable when compared to standardized (wired) EMG equipment during dry land EMG tests. 2.verify whether there is a different muscle recruitment pattern in swimming specific muscles between 2 impairment groups competing in the same functional class.Step 3EMG cannot detect differences in muscle activity during passive drag testing between a relaxed swimmerand a cheating swimmer in different impairment groups.The aims of this step are to:- examine the relation between physical impairment and the drag force in water during passive towing in a sample of elite competitors with loco-motor disabilities.- examine the potential of EMG being used as a control measure during passive drag testing. 3. ConclusionThe end point of the PhD is to provide the International Paralympic Committee with knowledge and tools to develop an improved classification system for swimmers with motor disabilities no longer only relying on expert opinion, but on evidence based swimming specific functional measures such as passive drag and muscle activity.status: Publishe
Posturale controle in relatie tot knie- en enkelblessures tijdens quasi-statische en dynamische taken
No full textstatus: Publishe
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Klinische en biomechanische resultaten bij patiënten met een knieprothese
No full textKnee arthroplasty is still the treatment of choice for end-stage knee osteoarthritis. The Belgian national register for arthroplasty reports that over 20.000 knee replacement procedures are performed each year. Mostly total knee arthroplasty (TKA) is performed. This type of arthroplasty replaces the entire articular surfaces (tibial and femoral) of the knee, including both cruciate ligaments. In contrast, unicondylar knee arthroplasty (UKA) replaces solely the compartment (medial or lateral) that is the most worn out. Furthermore, UKA preserves the integrity of the cruciate ligaments, which are considered to have a crucial role in joint proprioception and stability [2].
Despite the high prevalence of knee replacement procedures, up to 30% of patients experience difficulties when returning to recreational and work related activities, leaving them dissatisfied with the results of the surgery [1]. Regrettably, the underlying cause for this high dissatisfaction rate is still unclear. Furthermore, there are little to no studies comparing the differences in clinical (muscle strength, mobility, pain and function) and biomechanical (kinematics and kinetics of gait and functional movements) outcome after UKA and TKA. Moreover, Komnik et al. stated in a recent systematic review an urgent need for studies comparing UKA and TKA patients during more demanding tasks of daily living [3]. Therefore, it is of the utmost importance that good quality movement research is conducted to address these shortcomings.
This doctoral project will primarily focus on the longitudinal evaluation of clinical and biomechanical parameters of patients with UKA and TKA. In this longitudinal study, patients will be assessed five times (3 days, 6 weeks, 6 months, 1 year and 2 years postoperatively) during a 2 year follow-up. The clinical outcome measurements will be evaluated by means of standardized questionnaires (functionality), hand held dynamometry (muscle strength) and goniometry (range of motion). The biomechanical variables will be evaluated using inertial measurement units (IMUs). These sensors are lightweight boxes that comprise an accelerometer, gyroscope and a magnetometer. Furthermore, these devices are wireless and battery powered and can therefore be implemented in settings where the use of a standard gait analysis system may be not possible [4]. These features will allow the biomechanical evaluation of patients with UKA and TKA in more realistic, daily situations and in the hospital.
1. Bourne R, Chesworth B, Davis A, Mahomed N, Charron K (2010) Patient Satisfaction after Total Knee Arthroplasty: Who is Satisfied and Who is Not? Clin Orthop Relat Res 468:57-63
2. Fridén T, Roberts D, Ageberg E, Waldén M, Zätterström R Review of knee proprioception and the relation to extremity function after an anterior cruciate ligament rupture. The Journal of orthopaedic and sports physical therapy 31:567
3. Komnik I, Weiss S, Fantini Pagani CH, Potthast W (2015) Motion analysis of patients after knee arthroplasty during activities of daily living - A systematic review. Gait & Posture 41:370-377
4. Shull PB, Jirattigalachote W, Hunt MA, Cutkosky MR, Delp SL Quantified self and human movement: A review on the clinical impact of wearable sensing and feedback for gait analysis and intervention. Gait & Posture 40:11-19status: Publishe
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