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Performance validity testing

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https://www.readbyqxmd.com/read/29775989/higher-accuracy-of-the-lactate-minimum-test-compared-to-established-threshold-concepts-to-determine-maximal-lactate-steady-state-in-running
#1
Patrick Wahl, Lukas Zwingmann, Christian Manunzio, Jacob Wolf, Wilhelm Bloch
This study evaluated the accuracy of the lactate minimum test, in comparison to a graded-exercise test and established threshold concepts (OBLA and mDmax) to determine running speed at maximal lactate steady state. Eighteen subjects performed a lactate minimum test, a graded-exercise test (2.4 m·s-1 start,+0.4 m·s-1 every 5 min) and 2 or more constant-speed tests of 30 min to determine running speed at maximal lactate steady state. The lactate minimum test consisted of an initial lactate priming segment, followed by a short recovery phase...
May 18, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29775878/repositioning-of-diabetes-treatments-for-depressive-symptoms-a-systematic-review-and-meta-analysis-of-clinical-trials
#2
REVIEW
Calum D Moulton, Christopher W P Hopkins, Khalida Ismail, Daniel Stahl
Depression is a common comorbidity in diabetes but conventional antidepressant treatments do not consistently improve outcomes. We tested whether established diabetes treatments can also improve depressive symptoms and examined biological correlates of response. We performed a multi-database systematic search of all clinical trials, which measured the effect of licensed diabetes treatments on depressive symptoms using a validated questionnaire. Results of randomised controlled trials (RCT's) were pooled for meta-analysis...
May 7, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29775851/comparative-study-of-quality-of-life-anxiety-depression-and-fatigue-among-patients-with-neuromyelitis-optica-spectrum-disorder-and-multiple-sclerosis-the-first-report-from-iran
#3
Mahdi Barzegar, Shervin Badihian, Omid Mirmosayyeb, Fereshteh Ashtari, Maryam Jamadi, Shohreh Emami, Leila Jahani, Armaghan Safavi, Vahid Shaygannejad
BACKGROUND: Neuromyelitis optica spectrum disorder (NMOSD) and multiple sclerosis (MS) are associated with reduced Health Related Quality of Life (HRQOL). To the best of our knowledge, change of HRQOL in patients with NMOSD has not been yet measure in Iran. The objective of this study was to assess HRQOL in NMOSD and MS patients and identify related factors METHODS: A cross sectional study of 41 patients with NMOSD and 136 age and sex-match MS patients was performed. A series of questionnaires including Persian validated questionnaires on HRQOL (SF-36), fatigue (MFIS), depression (BDI-II), anxiety (HAM-A) and sleep quality (PSQI) were record...
April 14, 2018: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29775174/factor-structure-of-a-standards-based-inventory-of-competencies-in-social-work-with-groups
#4
Mark J Macgowan, Frank R Dillon, Christine E Spadola
PURPOSES: This study extends previous findings on a measure of competencies based on Standards for Social Work Practice with Groups. The Inventory of Competencies in Social Work with Groups (ICSWG) measures confidence in performing the Standards. This study examines the latent structure of the Inventory, while illuminating the underlying structure of the Standards. METHODS: A multinational sample of 586 persons completed the ICSWG. Exploratory factor analysis (EFA), reliability estimates, standard error of measurement estimates, and a range of validity tests were conducted...
May 18, 2018: Journal of Evidence-informed Social Work
https://www.readbyqxmd.com/read/29774576/spatial-vision-in-older-adults-perceptual-changes-and-neural-bases
#5
REVIEW
Allison M McKendrick, Yu Man Chan, Bao N Nguyen
PURPOSE: The number of older adults is rapidly increasing internationally, leading to a significant increase in research on how healthy ageing impacts vision. Most clinical assessments of spatial vision involve simple detection (letter acuity, grating contrast sensitivity, perimetry). However, most natural visual environments are more spatially complicated, requiring contrast discrimination, and the delineation of object boundaries and contours, which are typically present on non-uniform backgrounds...
May 17, 2018: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/29774101/qilin-pills-alleviate-oligoasthenospermia-by-inhibiting-bax-caspase-9-apoptosis-pathway-in-the-testes-of-model-rats
#6
Kaishu Zhang, Zhengyan Ge, Longlong Fu, Qi An, Fang Zhou, Ying Guo, Xiaowei Wang, Wenhong Lu, Xiaowei Liang, Shusong Wang, Xuejun Shang, Yiqun Gu
At present, the treatment of oligoasthenospermia with western medicine is ineffective. Qilin pill (QLP) is a Chinese traditional medicine for treating male infertility. Recent multicenter clinical studies in China reported that QLPs markedly improved sperm quality. However, the mechanism of action of QLPs on oligoasthenospermia remains unknown. In this study, we investigated the mechanistic basis for improvement of semen parameters and reversal of testis damage by QLPs in a rat model of oligoasthenospermia induced by treatment with tripterygium glycosides (TGs) (40 mg/kg) once daily for 4 weeks...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29774095/a-long-non-coding-rna-signature-for-predicting-survival-in-patients-with-colorectal-cancer
#7
Yi-Lin Wang, Jun Shao, Xiaohong Wu, Tong Li, Ming Xu, Debing Shi
Dysregulation of long non-coding RNA (lncRNA) plays important roles in cancer development and progression. In this work, we attempted to develop a lncRNA signature to improve prognosis prediction of colorectal cancer. A comprehensive analysis for the lncRNA expression and corresponding clinical information of 344 colorectal patients has been performed based on the data from The Cancer Genome Atlas (TCGA). We randomly divided TCGA data into a training set ( n = 172) and a testing set ( n = 172). A four-lncRNA signature has been established which was significantly associated with the overall survival of colorectal cancer patients...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29773999/fitts-law-in-the-control-of-isometric-grip-force-with-naturalistic-targets
#8
Zachary C Thumser, Andrew B Slifkin, Dylan T Beckler, Paul D Marasco
Fitts' law models the relationship between amplitude, precision, and speed of rapid movements. It is widely used to quantify performance in pointing tasks, study human-computer interaction, and generally to understand perceptual-motor information processes, including research to model performance in isometric force production tasks. Applying Fitts' law to an isometric grip force task would allow for quantifying grasp performance in rehabilitative medicine and may aid research on prosthetic control and design...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29773697/which-anthropometric-measures-best-indicate-type-2-diabetes-among-russian-somali-and-kurdish-origin-migrants-in-finland-a-cross-sectional-study
#9
Natalia Skogberg, Tiina Laatikainen, Annamari Lundqvist, Eero Lilja, Tommi Härkänen, Päivikki Koponen
OBJECTIVES: To compare the performance of body mass index (BMI), waist-to-height ratio (WHtR), waist circumference (WC) and waist-to-hip ratio (WHR) in detecting type 2 diabetes among Russian, Somali and Kurdish (born in Iraq/Iran) origin migrants and Finns. DESIGN AND PARTICIPANTS: Cross-sectional study comparing health examination survey data of Russian, Somali and Kurdish origin migrants (n=917) aged 30-64 years who took part in the Migrant Health and Wellbeing Survey with the general Finnish population in the Health 2011 Survey (n=887)...
May 17, 2018: BMJ Open
https://www.readbyqxmd.com/read/29773528/a-digital-app-to-aid-detection-monitoring-and-management-of-dyslexia-in-young-children-dimmand-protocol-for-a-digital-health-and-education-solution
#10
Mariam R Sood, Annet Toornstra, Martin I Sereno, Mark Boland, Daniele Filaretti, Anuj Sood
BACKGROUND: Dyslexia, a specific learning difficulty and a disability as defined in the Equality Act 2010, is a lifelong condition that affects a child from the start of education. Dyslexia is characterized by difficulties in language processing (reading, spelling, and writing) which do not correspond with the child's general intellectual abilities. Although dyslexia cannot be cured, there is a consensus that interventions are more effective and have greater impact the earlier they are administered...
May 17, 2018: JMIR Research Protocols
https://www.readbyqxmd.com/read/29773444/assessment-of-competence-in-video-assisted-thoracoscopic-surgery-lobectomy-a-danish-nationwide-study
#11
René Horsleben Petersen, Kirsten Gjeraa, Katrine Jensen, Lars Borgbjerg Møller, Henrik Jessen Hansen, Lars Konge
BACKGROUND: Competence in video-assisted thoracoscopic surgery lobectomy has previously been established on the basis of numbers of procedures performed, but this approach does not ensure competence. Specific assessment tools, such as the newly developed video-assisted thoracoscopic surgery lobectomy assessment tool, allow for structured and objective assessment of competence. Our aim was to provide validity evidence for the video-assisted thoracoscopic surgery lobectomy assessment tool...
April 18, 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29773203/validation-of-semiautomatic-scoring-of-rem-sleep-without-atonia-in-patients-with-rbd
#12
D Guttowski, G Mayer, W H Oertel, K Kesper, T Rosenberg
OBJECTIVE/BACKGROUND: To evaluate REM sleep without atonia (RSWA) in REM sleep behavior disorder (RBD) several automatic algorithms have been developed. We aimed to validate our algorithm (Mayer et al., 2008) in order to assess the following: (1). capability of the algorithm to differentiate between RBD, night terror (NT), somnambulism (SW), Restless legs syndrome (RLS), and obstructive sleep apnea (OSA), (2). the cut-off values for short (SMI) and long muscle activity (LMI), (3). which muscles qualify best for differential diagnosis, and (4)...
June 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29772297/pharmacokinetic-profile-and-oral-bioavailability-of-kaurenoic-acid-from-copaifera-spp-in-rats
#13
Dalyara Mendonça de Matos, Milainy Rocha Viana, Marcela Cristina de Oliveira Alvim, Lara Soares Aleixo de Carvalho, Laura Hora Rios Leite, Ademar Alves da Silva Filho, Jorge Willian Leandro Nascimento
Kaurenoic acid (KA) is a kaurane diterpene found in several medicinal plants that displays biological activities, such as anti-inflammatory, smooth muscle relaxant and hypotensive response. However, there are no pharmacokinetic data available about this molecule. The purpose of the study was to determine the pharmacokinetics profile and the oral bioavailability of KA in rats. Wistar rats submitted to jugular vein cannulation received 50 mg/kg of KA by intravenous or oral route. The implanted cannula allowed intravenous administration and serial blood collection along 10 h...
May 14, 2018: Fitoterapia
https://www.readbyqxmd.com/read/29771930/perspectives-of-human-verification-via-binary-qrs-template-matching-of-single-lead-and-12-lead-electrocardiogram
#14
Vessela Krasteva, Irena Jekova, Ramun Schmid
OBJECTIVE: This study aims to validate the 12-lead electrocardiogram (ECG) as a biometric modality based on two straightforward binary QRS template matching characteristics. Different perspectives of the human verification problem are considered, regarding the optimal lead selection and stability over sample size, gender, age, heart rate (HR). METHODS: A clinical 12-lead resting ECG database, including a population of 460 subjects with two-session recordings (>1 year apart) is used...
2018: PloS One
https://www.readbyqxmd.com/read/29771817/high-value-cost-conscious-communication-skills-in-undergraduate-medical-education-validity-evidence-for-scores-derived-from-two-standardized-patient-scenarios
#15
Neena Natt, Stephanie R Starr, Darcy A Reed, Yoon Soo Park, Liselotte N Dyrbye, Andrea N Leep Hunderfund
INTRODUCTION: Training in high-value, cost-conscious care (HVCCC) is increasingly being incorporated into medical school curricula, but students may have limited opportunities to engage patients in HVCCC conversations. The aim of this study was to develop two standardized patient scenarios with associated checklists, hypothesizing that resulting scores would allow for valid formative assessments of HVCCC communication skills. METHODS: Scenarios were designed to generate a less-is-more conversation (in response to a patient requesting an unnecessary test) and a shared decision-making conversation (in response to a patient choosing between multiple effective treatment options)...
May 15, 2018: Simulation in Healthcare: Journal of the Society for Simulation in Healthcare
https://www.readbyqxmd.com/read/29771787/point-of-care-cryptococcal-antigen-screening-pipetting-finger-prick-blood-improves-performance-of-immuno-mycologics-lateral-flow-assay
#16
Rachel M Wake, Joseph N Jarvis, Thomas S Harrison, Nelesh P Govender
BACKGROUND: Cryptococcal antigen (CrAg) screening at point of care could improve cryptococcal meningitis prevention where laboratory resources are limited. We evaluated the accuracy of Immuno-Mycologics (IMMY, Norman, OK) CrAg lateral flow assay (LFA) using different techniques at point of care. SETTING: Two tertiary-level hospitals in Johannesburg and a community health clinic in Soweto, South Africa. METHODS: A case-control diagnostic validation study, and a prospective clinic-based implementation study using the IMMY CrAg LFA on finger-prick blood...
April 30, 2018: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29771693/use-of-patient-simulators-to-characterize-the-repeatability-and-reproducibility-of-automated-oscillometric-blood-pressure-monitors
#17
Elmiloudi M Sarhrani, Thomas B Gilmore, Andre S Lamontagne, Lauren B Harris, Jay S Kellett, Michael P Sweeney, Teresa I Navas, Oleg Vesnovsky, Charles Ho, Luke H Herbertson
OBJECTIVES: Automated oscillometric blood pressure (BP) monitors can be critical health assessment tools if they are accurate and can provide repeatable and reproducible readings. Commercial patient simulators are capable of screening for poorly performing oscillometric BP monitors. A valid screening bench test method to identify unreliable and underperforming BP monitors could advance surveillance of these devices and support regulatory decision making. METHODS: Two simulators were used to characterize a total of 19 legally marketed upper arm, wrist, hospital-grade, and public-use BP monitors...
May 16, 2018: Blood Pressure Monitoring
https://www.readbyqxmd.com/read/29771269/upper-gastrointestinal-alterations-in-kidney-transplant-candidates
#18
João Pedro Homse Netto, João Pedro Sant'Anna Pinheiro, Mariana Lopes Ferrari, Mirella Tizziani Soares, Rogério Augusto Gomes Silveira, Mariana Espiga Maioli, Vinicius Daher Alvares Delfino
INTRODUCTION: The incidence of gastrointestinal disorders among patients with chronic kidney disease (CKD) is high, despite the lack of a good correlation between endoscopic findings and symptoms. Many services thus perform upper gastrointestinal (UGI) endoscopy on kidney transplant candidates. OBJECTIVES: This study aims to describe the alterations seen on the upper endoscopies of 96 kidney-transplant candidates seen from 2014 to 2015. METHODS: Ninety-six CKD patients underwent upper endoscopic examination as part of the preparation to receive kidney grafts...
May 14, 2018: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/29769832/validity-and-reliability-of-the-powertap-p1-pedals-power-meter
#19
Jesús G Pallarés, José Ramón Lillo-Bevia
To validate the new PowerTap P1® pedals power meter (PP1), thirty-three cyclists performed 12 randomized and counterbalanced graded exercise tests (100-500 W), at 70, 85 and 100 rev·min-1 cadences, in seated and standing positions. A scientific SRM system and a pair of PP1 pedals continuously recorded cadence and power output data. Significantly lower power output values were detected for the PP1 compared to the SRM for all workloads, cadences, and pedalling conditions (2-10 W, p < 0.05), except for the workloads ranged between 150 W to 350 W at 70 rev·min-1 in seated position (p > 0...
June 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29769821/validity-and-reliability-of-surface-electromyography-measurements-from-a-wearable-athlete-performance-system
#20
Scott K Lynn, Casey M Watkins, Megan A Wong, Katherine Balfany, Daniel F Feeney
The Athos ® wearable system integrates surface electromyography (sEMG ) electrodes into the construction of compression athletic apparel. The Athos system reduces the complexity and increases the portability of collecting EMG data and provides processed data to the end user. The objective of the study was to determine the reliability and validity of Athos as compared with a research grade sEMG system. Twelve healthy subjects performed 7 trials on separate days (1 baseline trial and 6 repeated trials). In each trial subjects wore the wearable sEMG system and had a research grade sEMG system's electrodes placed just distal on the same muscle, as close as possible to the wearable system's electrodes...
June 2018: Journal of Sports Science & Medicine
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