bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Comparison of Bilateral vs. Unilateral-Biased Strength and Power Training Interventions on Measures of Physical Performance in Elite Youth Soccer Players
Authors: Stern Darren , Gonzalo-Skok Oliver , Loturco Irineu , Turner Anthony , Bishop Chris 
Published: July 2020

Abstract
Stern, D, Gonzalo-Skok, O, Loturco, I, Turner, A, and Bishop, C. A comparison of bilateral vs. unilateral-biased strength and power training interventions on measures of physical performance in elite youth soccer players. J Strength Cond Res 34(8): 2105–2111, 2020—The aim of the present study was to compare the effects of bilateral and unilateral-biased strength and power training programs on measures of physical performance in male youth soccer players. Twenty-three elite youth players (age: 17.6 ± 1.2 years) were randomly assigned to either a unilateral (n = 11) or a bilateral (n = 12) group, who completed a strength and power intervention, twice per week for 6 weeks. The unilateral group completed rear foot elevated split squats (RFESS), single-leg countermovement jumps (SLCMJs), single-leg drop jumps (SLDJs), and single-leg broad jumps (SLBJs). The bilateral group intervention performed back squats, CMJs, drop jumps (DJ), and broad jumps (BJ). A 2 × 2 repeated measures analysis of variance showed no between-group differences. However, within-group differences were evident. The bilateral training group showed significant (p < 0.05) improvements in back squat strength (d = 1.27; %Δ = 26.01), RFESS strength (d = 1.64; %Δ = 23.34), BJ (d = 0.76; %Δ = 5.12), 10-m (d = −1.17; %Δ = 4.29), and 30-m (d = −0.88; %Δ = 2.10) performance. The unilateral group showed significant (p < 0.05) improvements in RFESS strength (d = 1.40; %Δ = 33.29), SLCMJ on the left leg (d = 0.76; %Δ = 9.84), SLBJ on the left leg (d = 0.97; %Δ = 6.50), 10 m (d = −1.50; %Δ = 5.20), and 505 on the right leg (d = −0.78; %Δ = 2.80). Standardized mean differences showed that bilateral training favored improvements in back squat strength and unilateral training favored improvements in RFESS strength, SLDJ on the right leg and 505 on the right leg. These results show that although both training interventions demonstrated trivial-to-large improvements in physical performance, the notion of training specificity was evident with unilateral training showing greater improvements in unilateral test measures.
Effectiveness of a Generic vs. Specific Program Training to Prevent the Short-Term Detraining on Repeated-Sprint Ability of Youth Soccer Players
Authors: Rodríguez-Fernández Alejandro , Villa José G. , Sánchez-Sánchez Javier , Rodríguez-Marroyo Jose A. 
Published: July 2020

Abstract
Rodríguez-Fernández, A, Villa, JG, Sánchez-Sánchez, J, and Rodríguez-Marroyo, JA. Effectiveness of a generic vs. specific program training to prevent the short-term detraining on repeated-sprint ability of youth soccer players. J Strength Cond Res 34(8): 2128–2135, 2020—The aim of this study was to analyze the effects of 2 short-term training programs to prevent the negative effect of detraining on repeated-sprint ability (RSA) performance. The study was performed during a 2-week midseason break without official matches. Forty-five youth soccer players (17.7 ± 0.8 years, 175.4 ± 5.5 cm, and 67.2 ± 5.1 kg) were split into 3 groups during the intervention period: inactivity group (IN; N = 16), generic high-intensity training group (GG; N = 15), and specific training group (SG; N = 14). IN was instructed to avoid performing physical activity during the 2-week training intervention. However, GG and SG performed 8 training sessions. GG performed a generic aerobic interval training consisting of 4 repetitions of 4 minutes of exercise at 90–95% of maximal heart rate. SG performed a specific conditioning through small-sided games (4 vs. 4, 4 × 4-minute) and repeated sprints (6 × 30-m). Testing sessions included an RSA test and a Yo-Yo intermittent recovery test level 1 (YYIR1). Repeated-sprint ability performance only improved after the training intervention in SG (∼2%, p < 0.01,

JOURNAL/jscr/04.03/00124278-202008000-00004/4MM1/v/2023-10-04T215212Z/r/image-tiff

= 0.23–0.25). Both GG and IN declined their performance in post-test (∼2%, p < 0.01,

JOURNAL/jscr/04.03/00124278-202008000-00004/4MM1/v/2023-10-04T215212Z/r/image-tiff

= 0.19–0.22). No significant effect, group × time, was analyzed for YYIR1 performance. This study suggests that only specific training, based on small-sided games and repeated sprints, leads to short-term improvements on RSA performance in youth soccer players.
Elevating the Noninvolved Limb Reduces Knee Extensor Asymmetry During Squat Exercise in Persons With Reconstructed Anterior Cruciate Ligament
Authors: Jean Liane M.Y. , Chiu Loren Z.F. 
Published: July 2020

Abstract
Jean, LMY and Chiu, LZF. Elevating the noninvolved limb reduces knee extensor asymmetry during squat exercise in persons with reconstructed anterior cruciate ligament. J Strength Cond Res 34(8): 2120–2127, 2020—Anterior cruciate ligament (ACL)–injured individuals use less knee extensor net joint moment (NJM) in the involved vs. noninvolved limb during squat exercises. The objective of this research was to examine if knee extensor NJM symmetry between the involved and noninvolved limbs could be attained with a modified squat. Six individuals with unilateral ACL reconstructed knees performed bilateral squats under normal conditions and with their noninvolved limb elevated on a 5-cm platform. Knee extensor NJM was determined using 3-dimensional motion analysis. Knee extensor NJM was lower in the involved compared with the noninvolved limb (95% confidence interval [CI], 0.08–0.28 N·m·kg−1; d = 1.66 SD) during normal squats. Knee extensor NJM was greater in the involved (95% CI, 0.02–0.18 N·m·kg−1; d = 0.57 SD) and lower in the noninvolved (95% CI, −0.25 to −0.07 N·m·kg−1; d = 1.85 SD) limbs in the elevated vs. normal squats. Knee extensor NJM was not different between limbs when the noninvolved limb was elevated (95% CI, −0.26 to 0.11 N·m·kg−1; d = 0.48 SD). Persons with ACL reconstruction exhibit knee extensor asymmetry during bilateral squats. Elevating the noninvolved limb reduces knee extensor NJM asymmetry between the involved and noninvolved limbs during squat exercise.
Fulminant myocarditis: use of echocardiography from diagnosis to extracorporeal membrane oxygenation
Authors: Park Na Hyun , Lashin Hazem , Spiritoso Rosalba 
Published: July 2020

Summary
Fulminant myocarditis can present with life-threatening arrhythmias and cardiogenic shock due to ventricular failure. The diagnosis of myocarditis usually requires histological and immunological information, as its aetiology may be infectious (viral or non-viral), autoimmune or drug related. The treatment of fulminant myocarditis depends on the underlying cause but usually includes high dose systemic steroids as well as physiological support. Veno-arterial extracorporeal membrane oxygenation (V-A ECMO) can be used to support patients as a bridge to recovery by supporting biventricular function and decompressing the heart. V-A ECMO carries risks and complications of its own such as thrombus formation or bleeding. Different diagnostic modalities, such as transthoracic echocardiogram (TTE) and transoesophageal echocardiogram (TOE), are central to the monitoring of progression of disease and recovery of heart function. This case highlights the importance of early recognition and early support with V-A ECMO in fulminant myocarditis, as well as the role of repeated echocardiography when weaning from physiological support.
Prognostic value of resting myocardial contrast echocardiography: a meta-analysis
Authors: Qian Lijun , Xie Feng , Xu Di , Porter Thomas R. 
Published: July 2020

Abstract

Background: Resting myocardial perfusion (MP) and wall motion (WM) imaging during real-time myocardial contrast echocardiography (MCE) improves the detection of coronary artery disease (CAD). However, its prognostic role in different clinical settings (emergency department and outpatient setting) remains unclear.

Methods: A systematic search in PubMed and Embase databases, and the Cochrane library, was conducted to evaluate the role of resting MP and WM in predicting major adverse cardiac events (MACE), including death, nonfatal myocardial infarction (NFMI) and urgent revascularization in patients presenting to either outpatient clinics or emergency departments with suspected symptomatic CAD. Summary receiver operating characteristic (SROC) curves, sensitivity and specificity plots were applied to assess diagnostic performance using RevMan 5.3.

Results: Seven studies met criteria, including 3668 patients (six with follow up ranging from 2 days to 2.6 years). The Relative Risk (RR) for predicting MACE in patients with both abnormal resting MP and WM was 6.1 (95% CI, 5.1–7.2) and 14.3 (95% CI, 10.3–19.8) for death/NFMI, when compared to normal resting MP and WM patients. Having both abnormal resting MP and WM was also more predictive of MACE (RR, 1.7; 95% CI 1.5–1.9) and death/NFMI (RR, 2.2; 95% CI, 1.8–2.7) when compared to abnormal WM with normal resting MP.

Conclusion: In this meta-analysis of both ED and outpatient clinic presentations for suspected CAD, having both a resting regional MP and WM abnormality identifies the highest risk patient for adverse events.
Los exilios y presencia en Costa Rica de nicaragüenses, durante las décadas de los 30 y 40 del siglo XX
Authors: Chacón Araya German 
Published: July 2020

Este artículo se enmarca dentro del proyecto de investigación “El Seminario Permanente “Exilio Iberoamericano”, y el Proyecto PAPIIT IA 600314 del CIALC, ambos de la UNAM (México). De este, la Universidad Nacional (Costa Rica) es contraparte a través del IDELA, como una ampliación del proyecto de investigación en el espacio investigativo que suponen las Jornadas del Exilio Iberoamericano. La investigación ha buscado incursionar en una temática poco estudiada, el largo exilio vivido en Costa Rica por nicaragüenses miembros del “Ejército de Liberación de Sandino y sus bases sociales”, posterior al asesinato de su máximo líder, en manos de los Somoza a principios de la década de los 30, quienes no renunciaron a derrotar la dictadura y participaron en golpes de mano a las fuerzas somocista, hasta el triunfo de la Revolución Sandinista, durante 49 años vivieron un exilio particular, incorporados en la defensa de las Garantías Sociales y el Código de Trabajo de Costa Rica, luchando como milicianos en la coyuntura que supuso la guerra civil de 1948, donde gran cantidad ofrendó su sangre, por la patria que les acogió.
Test Strategies to Predict Inflammatory Bowel Disease Among Children With Nonbloody Diarrhea
Authors: Van de Vijver Els , Heida Anke , Ioannou Solomon , Van Biervliet Stephanie , Hummel Thalia , Yuksel Zehre , Gonera-de Jong Gieneke , Schulenberg Renate , Muller Kobold Anneke , Verkade Henkjan J. , van Rheenen Patrick F. ,   CACATU CONSORTIUM
Published: July 2020

OBJECTIVES:We evaluated 4 diagnostic strategies to predict the presence of inflammatory bowel disease (IBD) in children who present with chronic nonbloody diarrhea and abdominal pain.METHODS:We conducted a prospective cohort study including 193 patients aged 6 to 18 years who underwent a standardized diagnostic workup in secondary or tertiary care hospitals. Each patient was assessed for symptoms, C-reactive protein (&gt;10 mg/L), hemoglobin (&lt;−2 SD for age and sex), and fecal calprotectin (≥250 μg/g). Patients with rectal bleeding or perianal disease were excluded because the presence of these findings prompted endoscopy regardless of their biomarkers. Primary outcome was IBD confirmed by endoscopy or IBD ruled out by endoscopy or uneventful clinical follow-up for 6 months.RESULTS:Twenty-two of 193 (11%) children had IBD. The basic prediction model was based on symptoms only. Adding blood or stool markers increased the AUC from 0.718 (95% confidence interval [CI]: 0.604–0.832) to 0.930 (95% CI: 0.884–0.977) and 0.967 (95% CI: 0.945–0.990). Combining symptoms with blood and stool markers outperformed all other strategies (AUC 0.997 [95% CI: 0.993–1.000]). Triaging with a strategy that involves symptoms, blood markers, and calprotectin will result in 14 of 100 patients being exposed to endoscopy. Three of them will not have IBD, and no IBD-affected child will be missed.CONCLUSIONS:Evaluating symptoms plus blood and stool markers in patients with nonbloody diarrhea is the optimal test strategy that allows pediatricians to reserve a diagnostic endoscopy for children at high risk for IBD.
GeoGebra, Quizizz, PowToon y Kahoot como recursos tecnológicos en la enseñanza de la Geometría en sétimo año de la Educación General Básica costarricense
Authors: Bolaños Víquez Adriana , Ruiz Salas María , Alonso Ramírez Bolívar , Bermúdez Montiel Isaac , Bolaños Rojas Vanessa 
Published: July 2020

Esta investigación tiene como propósito analizar la influencia del uso de la tecnología por medio de los programas GeoGebra, Quizizz, PowToon y Kahoot en el desarrollo de los procesos de aprendizaje de las Matemáticas, en el tema de Geometría de sétimo año, por medio de una Unidad Didáctica. La investigación, de metodología cualitativa, estableció como muestra un grupo de docentes y dos secciones de sétimo año del Liceo Experimental Bilingüe de Grecia, Costa Rica, donde una de las secciones correspondió al grupo control y la otra al grupo experimental. Para la recolección de la información se aplicaron observaciones, cuestionarios y notas de campo. Entre los hallazgos de este estudio se encuentra que la utilización de los software contribuyeron a la motivación de las y los estudiantes en las clases, además de que su implementación permitió al estudiante tener una mejor visualización de las figuras geométricas. Por lo tanto, este estudio evidenció que la incorporación de estos programas es beneficiosa para el proceso de enseñanza y aprendizaje en el tema de Geometría en sétimo año.
Base de datos para Efecto agudo de los entrenamientos de fuerza, velocidad, pliometría y velocidad contra resistencia en la carrera de velocidad
Authors: Barquero Jiménez José Francisco , Salazar Rojas Walter 
Published: July 2020

La velocidad juega un papel fundamental en el rendimiento deportivo tanto en deportes individuales como colectivos. Los objetivos de este estudio son: a) determinar el efecto agudo de los tipos de entrenamiento de Fuerza, Velocidad, Pliometría y Velocidad contra Resistencia en la carrera de velocidad y sus fases, y b) realizar el análisis del efecto agudo de estos tipos de entrenamiento de manera individual. Once velocistas (edad promedio de 21.8 años 3.04, talla de 1.764m 0.062 y peso de 69.645kg 4.946), con experiencia como velocistas realizaron cinco tratamientos agudos (F, V, P, VR y control), para los cuales se aleatorizó el orden. Para cada tratamiento, realizaron un pre test y un pos test de 100 metros con mediciones de intervalos cada 20 metros. Se realizaron 2 análisis de varianza (ANOVA) de medidas repetidas de 2 y 3 vías, con el objetivo de analizar el efecto de los tratamientos en el tiempo total de carrera y en cada uno de los intervalos de la carrera de velocidad respectivamente. También, se realizó un análisis individual, utilizando estadísticos descriptivos y gráficos. No hubo interacción significativa entre las mediciones y los tipos de entrenamiento (F = 1.733 p = 0.162), ni entre las mediciones, los tipos de entrenamiento y los intervalos de distancia (F = 0.569 p = 0.903). En el análisis individual, se observa como los cambios en la velocidad según el tipo de tratamiento varían entre sujetos, siendo el tratamiento de velocidad con el que más sujetos mejoran.
Learning Context Effects : Study Abroad, Formal Instruction and International Immersion Classrooms, edited by C. Pérez Vidal, S. López-Serrano, J. Ament and D. J. Thomas-Wilhelm (2018)
Authors: Walker Talia 
Published: July 2020

Learning Context Effects : Study Abroad, Formal Instruction and International Immersion Classrooms Edited by C. Pérez Vidal, S. López-Serrano, J. Ament and D. J. Thomas-Wilhelm (2018) Berlin: Language Science Press, 328pp.
Los proyectos educativos en Santiago de Cali
Authors: Trujillo Milton , Ordoñez Marleny , Caviedes Gilbert 
Published: July 2020

Una de las estrategias exigidas a las Instituciones Educativas Oficiales (IEO) de Colombia, a partir de la Ley 115 de 1994, para contribuir a la transformación del sistema educativo, fue la construcción del Proyecto Educativo Institucional (PEI). Éste permite consolidarse como instituciones dinámicas e innovadoras, capaces de gestionar administrativa y pedagógicamente la creación de ambientes de aprendizaje y de convivencia. En el artículo se exponen los resultados del proyecto de investigación-acción, desarrollado mediante convenio entre la Secretaría de Educación Municipal de Cali e Instituto de Educación y Pedagogía de la Universidad del Valle, con el objetivo de reportar un inventario de la caracterización de los PEI de 91 IEO del Municipio de Santiago de Cali. La investigación asumió un enfoque cualitativo, con perspectiva crítico-comprensiva sobre análisis de contenido; se realizó de agosto-diciembre de 2017. Los resultados se organizaron en torno a las cuatro gestiones del PEI: institucional, académica, administrativa y comunitaria; éstas invitan a pensar el PEI, como un proceso complejo y no como un simple documento formal. Una conclusión fue que no existe una relación orgánica con otras instituciones sociales de los contextos de las instituciones educativas, de tal anera que se compartan responsabilidades en la construcción y desarrollo de los proyectos educativos. Así mismo, las IEO no exponen, claramente, en su PEI, procesos de caracterización que den cuenta de las realidades sociales, culturales, políticas, económicas y ambientales del contexto y sus problemáticas; las cuales se convierten en la oportunidad de integrar el PEI a la transformación del territorio.
Estrategias pedagógicas propiciadoras del fomento lector en estudiantes de básica primarias
Authors: Guerrero Cuentas Hilda Rosa , Herrera Tapias Beliña , Rueda Rojano Sandra , Borbua Baldiris Beatriz , Morales Ortega Yuneidis 
Published: July 2020

La lectura en la formación integral de los estudiantes, cobra importancia al desarrollar sus ideas, creatividad e imaginación. Si bien esta actividad es propiciada en cada plantel educativo, los estudiantes continúan restándole valor en su desempeño escolar. Así entonces, el objetivo de la investigación consistió en proponer estrategias pedagógicas para el fomento de la lectura en los estudiantes de 5° grado de Básica Primaria del municipio de Galapa en el departamento del Atlántico (Colombia). La metodología se fundamentó en un enfoque cualitativo, con un diseño no experimental transeccional y un paradigma post-positivista. Como técnica de recopilación de información, se utilizó la entrevista semiestructurada. La muestra estuvo conformada por 16 estudiantes de 5° grado y 5 docentes de básica primaria. Los resultados obtenidos mostraron la poca claridad y apropiación de los docentes, sobre la implementación de estrategias pedagógicas innovadoras, a través de actividades lúdicas que motiven y despierten el interés de los estudiantes por la lectura. En lo que respecta a los estudiantes, se logró evidenciar la apatía que sienten por el proceso lector, careciendo de motivación. Con La Ruleta de la lectura y Con mi familia leo como estrategias pedagógicas propuestas, se concluyó que, para fomentar la lectura de los niños, debe implementarse el juego como acción promotora para la adquisición de la lectura, especialmente, cuando se trate de niños de básica primaria, siendo ellos, con el apoyo de sus padres y docentes, quienes conseguirán el motivo suficiente para iniciar, explorar y decidir cómo ejecutar una actividad.
Kök Değerlerin Ortaokul Türkçe Ders Kitaplarındaki Erdemler Temasıyla İlişkisi
Authors: DURHAT Gözde , ÖKTEN Celile 
Published: July 2020

Eğitim sistemi akademik açıdan başarılı bireyler yetiştirmeyi hedeflemekle birlikte, önceliğini temel değerleri benimsemiş bireyler yetiştirmeye vermektedir. Türkçe dersleri de ders kitapları aracılığıyla değerleri öğrencilere aktarmakta, dünden getirilenlerle bugüne ve yarınlara ışık tutmaktadır. Bu çalışmanın amacı 2018-2019 eğitim öğretim yılında okutulan Ortaokul Türkçe Ders Kitaplarının Erdemler temasında yer alan kök değerleri tespit etmek ve kök değerlerin temadaki metin ve etkinliklerle ilişkisini ortaya koymaktır. Çalışma doküman incelemesi kapsamında yürütülmüş olup ortaokul Türkçe ders kitaplarında yer alan Erdemler teması araştırmanın inceleme nesnesi olarak belirlenmiştir. Veriler doküman incelemesi, yarı yapılandırılmış görüşme (18 kız, 24 erkek öğrenci), alan taraması kullanılarak toplanmış; verilerin çözümlenmesinde betimsel analiz ve içerik analizi esas alınmıştır. Araştırmayla kök değerlerin dengeli bir dağılımının olmadığı, yardımseverlik ve sevgi değerine sıkça yer verilirken öz denetim ve vatanseverlik değerinin temada yer almadığı sonucuna ulaşılmıştır. Erdemler temasının öğrencilere nasıl bir kişilik kazandırmaya yöneldiği ve kök değerlerin öğrenciler üzerinde nasıl bir etkisinin olduğu tespit edilmiştir.
A Method to Directly EstimateS-Wave Site Amplification Factor from Horizontal-to-Vertical Spectral Ratio of Earthquakes (eHVSRs)
Authors: Ito Eri , Nakano Kenichi , Nagashima Fumiaki , Kawase Hiroshi 
Published: July 2020

ABSTRACTThe main purpose of the site classification or velocity determination at a target site is to obtain or estimate the horizontal site amplification factor (HSAF) at that site during future earthquakes because HSAF would have significant effects on the strong-motion characteristics. We have been investigating various kinds of methods to delineate the S-wave velocity structures and the subsequent HSAF, as precisely as possible. After the advent of the diffuse field concept, we have derived a simple formula based on the equipartitioned energy density observed in the layered half-space for incident body waves. In this study, based on the diffuse field concept, together with the generalized spectral inversion technique (GIT), we propose a method to directly estimate the HSAF of the S-wave portion from the horizontal-to-vertical spectral ratio of earthquakes (eHVSRs). Because the vertical amplification is included in the denominator of eHVSR, it cannot be viewed as HSAF without correction. We used GIT to determine both the HSAF and the vertical site amplification factor (VSAF) simultaneously from strong-motion data observed by the networks in Japan and then deduced the log-averaged vertical amplification correction function (VACF) from VSAFs at a total of 1678 sites in which 10 or more earthquakes have been observed. The VACF without a category has a constant amplitude of about 2 in the frequency range from 1 to 15 Hz. By multiplying eHVSR by VACF, we obtained the simulated HSAF. We verified the effectiveness of this correction method using data from observation sites not used in the aforementioned averaging in the frequency range from 0.12 to 15 Hz.