Sökresultat

Filtyp

Din sökning på "*" gav 533241 sökträffar

The biogeochemical impact of glacial meltwater from Southwest Greenland

Biogeochemical cycling in high-latitude regions has a disproportionate impact on global nutrient budgets. Here, we introduce a holistic, multi-disciplinary framework for elucidating the influence of glacial meltwaters, shelf currents, and biological production on biogeochemical cycling in high-latitude continental margins, with a focus on the silica cycle. Our findings highlight the impact of sign

Fetal programming and parent-of-origin effects of type 2 diabetes and insulin secretion

Abstract Type 2 diabetes mellitus (T2DM) is a heterogeneous and a complex disease defined by hyperglycemia. Thepancreas and its islets are central for glucose homeostasis and healthy adipose tissue. In turn, lipid levels in the bloodare crucial for glucose level stability. Both genetic and environmental factors and their interaction play a pivotal role inthe risk and development of the disease. In

Association between left ventricular lead position and intrinsic QRS morphology with regard to clinical outcome in cardiac resynchronization therapy for heart failure

BackgroundLeft ventricular (LV) lead position may be an important factor for delivering effective cardiac resynchronization therapy (CRT). We therefore aimed to evaluate the effects of LV lead position, stratified by native QRS morphology, regarding the clinical outcome.MethodsA total of 1295 CRT-implanted patients were retrospectively evaluated. LV lead position was classified as lateral, anterio

Revisiting the Standard of Proof for Charges of Exceptional Gravity before the International Court of Justice

The International Court of Justice has consistently required a stricter standard of proof for ‘charges of exceptional gravity’. The Bosnia Genocide and Croatia Genocide cases saw the Court require the high standard of ‘fully conclusive’ evidence across all elements of the allegations of genocide. Despite the difficulties associated with obtaining the necessary evidence of the intent of the perpetr

Postoperative three-dimensional endoanal ultrasound findings and relation to anal fistula plug failure

ObjectivesTo explore the utilization of three-dimensional (3D) endoanal ultrasound (EAUS) for the follow-up of the anal fistula plug (AFP), describe morphological findings in postoperative 3D EAUS, and evaluate if postoperative 3D EAUS combined with clinical symptoms can predict AFP failure.Materials and methodsA retrospective analysis of 3D EAUS examinations performed during a single-centre study

Standardization proposal of soft tissue artefact description for data sharing in human motion measurements

Soft tissue artefact (STA) represents one of the main obstacles for obtaining accurate and reliable skeletal kinematics from motion capture. Many studies have addressed this issue, yet there is no consensus on the best available bone pose estimator and the expected errors associated with relevant results. Furthermore, results obtained by different authors are difficult to compare due to the high v

Validation of knee joint models - An in vivo study

The effect of modeling the knee as a simple spherical or revolute joint during gait, cutting and hopping were evaluated. The results indicate that, even during gait, a revolute joint may be too restrictive in its representation of the knee, with flexion/extension errors as high as 9.4°. By imposing the spherical joint, joint angles showed consistent and strong correlations with the true joint angl

Predicting post-operative functional ability from pre-operative measures in ACL-injured individuals

Purpose: This study aimed to quantify the relationship between objective and subjective measures of functional ability and determine if measures in the deficient (ACLd) state were correlated to, and capable of predicting a patient's objective and subjective measures in the reconstructed (ACLr) state. Methods: Twenty ACL-injured participants completed hop and side cut movements prior to and 10 mont

Use of muscle synergies and wavelet transforms to identify fatigue during squatting

The objective of this study was to supplement continuous wavelet transforms with muscle synergies in a fatigue analysis to better describe the combination of decreased firing frequency and altered activation profiles during dynamic muscle contractions. Nine healthy young individuals completed the dynamic tasks before and after they squatted with a standard Olympic bar until complete exhaustion. El

Gait training after stroke : A pilot study combining a gravity-balanced orthosis, functional lectrical stimulation, and visual feedback

RATIONALE: This case report describes the application of a novel gait retraining approach to an individual with poststroke hemiparesis. The rehabilitation protocol combined a specially designed leg orthosis (the gravity-balanced orthosis), treadmill walking, and functional electrical stimulation to the ankle muscles with the application of motor learning principles. CASE: The participant was a 58-

Knee joint kinematics and kinetics during the hop and cut after soft tissue artifact suppression : Time to reconsider ACL injury mechanisms?

The recent development of a soft tissue artifact (STA) suppression method allows us to re-evaluate the tibiofemoral kinematics currently linked to non-contact knee injuries. The purpose of this study was therefore to evaluate knee joint kinematics and kinetics in six degrees of freedom (DoF) during the loading phases of a jump lunge and side cut using this in silico method. Thirty-five healthy adu

Protocol for the systematic review of return-to-activity criteria in adolescent patients following an anterior cruciate ligament reconstruction

Background: Anterior cruciate ligament (ACL) rupture is a debilitating knee injury associated with sequela such as joint instability and progressive degeneration. Unfortunately, following surgical ACL reconstruction in adolescents, the rates of ACL graft failure range from 17 to 19%. A contributing factor to the high reinjury rate in this population may be the limited evidence regarding appropriat

Effect of implementing magnetic resonance imaging for patient-specific OpenSim models on lower-body kinematics and knee ligament lengths

Background: OpenSim models are typically based on cadaver findings that are generalized to represent a wide range of populations, which curbs their validity. Patient-specific modelling through incorporating magnetic resonance imaging (MRI) improves the model's biofidelity with respect to joint alignment and articulations, muscle wrapping, and ligament insertions. The purpose of this study was to d

An approach for improving repeatability and reliability of non-negative matrix factorization for muscle synergy analysis

The aim of this study was to evaluate non-negative matrix factorization (NMF) and concatenated NMF (CNMF) to analyze and reliably extract muscle synergies. NMF and CNMF were used to extract knee joint muscle synergies from surface EMGs collected during a weight bearing, force matching task. Repeatability and between subject similarity were evaluated for each method using intra-class correlation co

Loading intensity of jumping exercises in post-menopausal women : Implications for osteogenic training

Post-menopausal women frequently exhibit low bone mineral density, and therefore, evidence-based exercises that induce osteogenic loading and prevent osteoporosis are often essential. The purpose of this study was to investigate the loading intensity of 3 different jumping exercises in post-menopausal women. Fourteen post-menopausal women participated in this study and completed a series of counte

Females with knee osteoarthritis use a detrimental knee loading strategy when squatting

Background: The purpose of this study was to identify sex differences in lower limb kinematics, kinetics, and muscle activation patterns between individuals with osteoarthritis and healthy controls during a two-legged squat. Method: Thirty OA (15 females) and 30 healthy (15 females) participants performed three 2-legged squats. Sagittal and frontal plane hip, knee, and ankle kinematics and kinetic