Search results for "reliability"

Analysis of the psicometric properties of a multiplication and division processes assessment scale

2019

Esta comunicación se encuentra disponible en la siguiente URL: http://www.infad.eu/RevistaINFAD/OJS/index.php/IJODAEP/article/view/1464/1321 Este número está dedicado a la "Psicología de la Educación y Saberes Originarios". The domain of multiplication and division operations depends on both algorithm management and the ability to identify the semantic structure of the problem and to translate it into mathematical language. Many students present difficulties in identifying the semantic structure of the problem but not applying the algorithm when the problem is presented numericaly. The aim of the study is to validate an assessment tool of the processes involved in multiplication and divisio…

An Optoelectronic System for Measuring the Range of Motion in Healthy Volunteers: A Cross-Sectional Study.

2019

Background and Objectives: Within the clinical evaluation of multiple pathologies of the lower limb, the measurement of range of motion (ROM) of its joints is fundamental. To this end, there are various tools, from the goniometer as a reference to more recent devices such as inclinometry-based applications, photo capture applications, or motion capture systems. This study aimed to assess the validity, intra-rater, and inter-rater reliability of the VeloFlex system (VS), which is a new camera-based tool designed for tracking joint trajectories and measuring joint ROM. Materials and Methods: Thirty-five healthy volunteers (16 females

2019

Ultrasound tissue characterization (UTC) imaging has been previously used to describe the characteristics of patellar and Achilles tendons. UTC imaging compares and correlates successive ultrasonographic transverse tendon images to calculate the distribution of four color-coded echo-types that represent different tendon tissue types. However, UTC has not been used to describe the characteristics of patellar tendons after anterior cruciate ligament reconstruction (ACLR). The aim of this cross-sectional study was to assess the intra and inter-rater reliability of the UTC in unharvested and harvested patellar tendons of patients undergoing ACLR. Intra and inter-rater reliability of both UTC da…

Inter- and intra-tester reliability of selected clinical tests in examining patients with early phase lumbar spine and sacroiliac joint pain and dysf…

2010

AbstractOf all patients with low back pain (LBP), 85% are diagnosed as “non-specific lumbar pain”. It has been postulated that the only reliable test is a straight leg raise test for detecting sciatic pain, and for other diagnostic subgroups, tests are of varying value. Only a few standardized tests exist to test function, inspection, mobility, pain, muscle flexibility or stability for patients with early phase lumbar spine and sacroiliac joint pain and dysfunction in the non-laboratory setting. The aim of this study was therefore to examine the inter- and intra-tester reliability of selected standardized clinical tests. Fifteen eligible, consecutive and voluntary LBP patients (aged 18–56 y…

M-mode Ultrasound Examination of Soleus Muscle in Healthy Subjects: Intra- and Inter-Rater Reliability Study

2020

Objective: M-mode ultrasound imaging (US) reflects the motion of connective tissue within muscles. The objectives of this study were to evaluate inter-rater and intra-rater reliability of soleus muscle measurements between examiners with different levels of US experience in asymptomatic subjects and to investigate the level of soleus muscle isometric activity in two positions (knee extended and knee flexed at 30&deg

Effect of saddle height on skin temperature measured in different days of cycling

2016

Infrared thermography can be useful to explore the effects of exercise on neuromuscular function. During cycling, it could be used to investigate the effects of saddle height on thermoregulation. The aim of this study was to examine whether different cycling postures, elicited by different knee flexion angles, could influence skin temperature. Furthermore, we also determined whether the reproducibility of thermal measurements in response to cycling differed in the body regions affected or not affected by saddle height. Sixteen cyclists participated in three tests of 45 min of cycling at their individual 50 % peak power output. Each test was performed in a different knee flexion position on …

Kinetic Analysis: A Sensitive Outcome Objective Measurement Method in Evaluating Lateral Patellar Instability

2011

There are many diagnostic clinical tests (e.g., apprehension patellar test or the moving patellar apprehension test), outcome measures (general health and knee scales [IKDC form, Kujala scale, Fulkerson scale, Lysholm knee scoring scale, Tegner activity level scale, short form-36]), and instrumented measurements of patellar mobility (static stability), to assess lateral patellar instability.7,10,15,16 However, according to Smith and colleagues,15 the sensitivity/specificity – reliability/validity of such tests and outcome tools remain unclear for this patient population. These authors conclude that further work is needed to assess the appropriateness of these tests and outcomes.15Moreover, …

Review: Electrostatically actuated nanobeam-based nanoelectromechanical switches – materials solutions and operational conditions

2018

This review summarizes relevant research in the field of electrostatically actuated nanobeam-based nanoelectromechanical (NEM) switches. The main switch architectures and structural elements are briefly described and compared. Investigation methods that allow for exploring coupled electromechanical interactions as well as studies of mechanically or electrically induced effects are covered. An examination of the complex nanocontact behaviour during various stages of the switching cycle is provided. The choice of the switching element and the electrode is addressed from the materials perspective, detailing the benefits and drawbacks for each. An overview of experimentally demonstrated NEM swi…

Metodyka doboru stopu konstrukcyjnego uwzględniająca wpływ wodoru na właściwości korozyjno-mechaniczne stopów

2016

Stopy metali są najczęściej wykorzystywanym materiałem konstrukcyjnym. Ponadto metale absorbują wodór, który osłabia ich własności mechaniczne i korozyjne. Ze tego względu konieczne jest opracowanie metodyki pozwalającej na dobór stopu zapewniający wydłużenie czasu niezawodności eksploatacyjnej konstrukcji. Zaproponowana metodyka obejmuje zarówno dobór materiału pod względem wytrzymałości mechanicznej, jak i odporności korozyjnej. Pomiary wytrzymałości mechanicznej obejmują próby udarności metodą Charpy’ego oraz odporności na rozciąganie. W obu przypadkach próbie poddawane są próbki nienawodorowane, jak i nawodorowane. Pomiary odporności korozyjnej przewidziano jako pomiar SEM korozyjnego o…

Wiener-Granger Causality in Network Physiology with Applications to Cardiovascular Control and Neuroscience

2016

Since the operative definition given by C. W. J. Granger of an idea expressed by N. Wiener, the Wiener–Granger causality (WGC) has been one of the most relevant concepts exploited by modern time series analysis. Indeed, in networks formed by multiple components, working according to the notion of segregation and interacting with each other according to the principle of integration, inferring causality has opened a window on the effective connectivity of the network and has linked experimental evidences to functions and mechanisms. This tutorial reviews predictability improvement, information-based and frequency domain methods for inferring WGC among physiological processes from multivariate…