Search results for "value"
showing 10 items of 5321 documents
A comparison of lumbopelvic motion patterns and erector spinae behavior between asymptomatic subjects and patients with recurrent low back pain durin…
2015
Objectives: The purpose of this study was to determine the patterns of lumbopelvic motion and erector spinae (ES) activity during trunk flexion-extension movements and to compare these patterns between patients with recurrent low back pain (LBP) in their pain-free periods and matched asymptomatic subjects. Methods: Thirty subjects participated (15 patients with disc herniation and recurrent LBP in their pain-free periods and 15 asymptomatic control subjects). A 3-dimensional videophotogrammetric system and surface electromyography (EMG) were used to record the angular displacements of the lumbar spine and hip in the sagittal plane and the EMG activity of the ES during standardized trunk fle…
Clinical performance of a highly portable, scanning calcaneal ultrasonometer.
2001
The aim of this study was to establish a normative database, assess precision, and evaluate the ability to identify women with low bone mass and to discriminate women with fracture from those without for a highly portable, scanning calcaneal ultrasonometer: the QUS-2. Fourteen hundred and one Caucasian women were recruited for the study. Among them were 794 healthy women 25–84 years of age evenly distributed per 10-year period to establish a normative database. Of these, 171 aged 25–34 years were defined as the young normal group for the purpose of T-score determination. Precision was assessed within 1 day (short-term) and over a 16-week period (long-term) in 79 women aged 25–84 years. Five…
Electromyographic Studies in Abdominal Exercises: A Literature Synthesis
2008
Abstract Objective The purpose of this article is to synthesize the literature on studies that investigate electromyographic activity of abdominal muscles during abdominal exercises performance. Methods MEDLINE and Sportdiscus databases were searched, as well as the Web pages of electronic journals access, ScienceDirect, and Swetswise, from 1950 to 2008. The terms used to search the literature were abdominal muscle and the specific names for the abdominal muscles and their combination with electromyography, and/or strengthening, and/or exercise, and/or spine stability, and/or low back pain. The related topics included the influence of the different exercises, modification of exercise positi…
Mechanical activity of small and large intestine in normal and mdx mice: a comparative analysis.
1999
The aim of this study was to compare the motor pattern (recorded as changes in intraluminal pressure) of isolated duodenum and proximal colon between dystrophic mdx and normal mice. When duodenal recordings from control preparations were compared with mdx mice there was no significant difference in the spontaneous motor pattern, responses to electrical nerve stimulation or sensitivity to pharmacological agents. Colonic segments from mdx mice showed a more complex motor pattern, consisting of contractions with amplitude and frequency similar to those of controls and by additional contractions with lower amplitude and higher frequency. Moreover, 70% of the colonic preparations from mdx mice d…
The radial artery is larger than the ulnar.
2003
The radial artery is presently widely used as a bypass graft for coronary artery reconstruction. However, the traditional opinion that the ulnar artery is the larger forearm artery has been questioned.The internal diameters of the radial and ulnar arteries were measured at the wrist in postmortem angiograms of 24 cadavers. Differences in mean values of variables between ulnar and radial arteries were analyzed using the Wilcoxon test.The mean diameter of the radial artery was 28% larger than that of the ulnar artery in the right arm (p0.001) and 26% larger in the left arm (p0.001). In the right arm the radial artery was dominant in 20 of 24 cadavers (83%), the ulnar artery in 3 of 24 (13%), …
MR-Tomographie versus CT-Arthrographie bei glenohumeralen Instabilitäten
1992
In a prospective study the diagnostic value of MRI compared to CT arthrography (CT-A) was evaluated in 26 patients with 27 instable shoulder joints. Surgical and/or arthroscopic correlation was available in all cases. Both methods showed a high accuracy (96% CT-A, 94% MRI) in the evaluation of the glenoid labrum. CT-A was significantly superior to MRI in the detection of capsular lesions (sensitivity 96% vs. 44%, accuracy 96% vs. 72%, negative predictive value 96% vs. 67%). CT-A and MRI results regarding humeral head fractures were similar; fractures of the glenoid rim were better detected by CT-A, the difference, however, was statistically not significant. Overall, CT-A proved to be superi…
Is time to joint replacement a valid outcome measure in clinical trials of drugs for osteoarthritis?
2003
The rate of radiographic joint space narrowing is commonly used today as a structural outcome measure in clinical trials evaluating potential disease-modifying drugs in patients with hip osteoarthritis, but this results in a continuous variable. Among the methods proposed to circumvent this problem, it has been suggested that the incidence of total hip arthoplasty (THA) provides a hard outcome measure. It is a dichotomized variable, easy to measure and sensitive to change, with acceptable intrinsic validity. However, because this measure is limited by the variability of factors underlying the decision to perform surgery and the length of waiting lists, it has been suggested that time to ful…
Poisto museokokoelmasta : museologinen arvokeskustelu kokoelmanhallinnan määrittäjänä
2016
This dissertation studies the issue of disposal in Finnish art museums. It is a research in the field of museology, in which museography plays a significant role. The field of museology functions as a science bridging theory and practice. In the research, museum collection management is divided into seven areas: acquisition, inventory, condition assessment, value assessment, conservation, upkeep and disposal. It is essential that collection management be viewed as a unified chain of operations, starting from acquisition and ending in disposal. This creates a bridge from the start of collection management to its end procedures, at which point the total disposal of an item is a possibility. A…
LE BÉNÉVOLAT POUR DES ÉVÉNEMENTS SPÉCIAUX: COMPARAISON ENTRE LA VALEUR ATTENDUE ET LA VALEUR PERÇUE
2016
Resumen: El fenómeno del voluntariado, como parte del sector no-lucrativo, puede ser estudiado desde una perspectiva de marketing como un comportamiento de consumo en el contexto de la realización de eventos especiales. En este estudio se busca explorar la dimensionalidad de la experiencia de ser voluntario en un megaevento religioso a través del concepto valor analizado con un enfoque diacrónico: pre-uso (valor esperado) vs. post-uso (valor percibido). Para ello, proponemos un estudio longitudinal sobre 711 voluntarios a través de dos análisis de componentes principales diferentes, antes y después del evento, sobre las mismas escalas de las dimensiones de valor. La estructura propuesta es …
The Motivation Scale for the Game (EMJ) : study of the use of the game in educational contexts
2014
Aunque el juego ha sido estudiado y descrito desde múltiples ópticas, relevando su importancia en el desarrollo humano, su uso en el ámbito educativo pareciera estar restringido mayoritariamente al nivel de educación parvularia. En este sentido, la motivación de los docentes por la integración de nuevas metodologías (incluido el juego) parece ser una variable relevante a la hora de estudiar el cambio y la mejora en educación. El objetivo de este artículo es presentar una escala que puede ayudar al estudio de la motivación por el uso del juego y reportar sus características psicométricas. La Escala de Motivación por el Juego (EMJ) ha sido construida a partir del Modelo de Expectativa y Valor…