Comparison of Game-Related Statistics in Men¿s International Championships between Winning and Losing Teams according to Margin of Victory

The aims of this study were (i) to compare water polo game-related statistics by game outcome (winning and losing teams) and margins of victory (close games, unbalanced games, and very unbalanced games), and (ii) to identify characteristics that mark the differences in performances for each group of margin of victory. The game-related statistics of the 308 men¿s matches played in seven International Championships (Olympic Games, World and European Championships) were analysed. A cluster analysis established three groups (close games, unbalanced games, and very unbalanced games) according to the margin of victory. Differences between game outcomes (winning or losing teams) and margins of victory (close, unbalanced, and very unbalanced games) were determined using the chi-squared statistic, also calculating the effect sizes of the differences. A discriminant analysis was then performed applying the sample-splitting method according to game outcome (winning and losing teams) by margin of victory. It was found that the game-related statistics differentiate the winning from the losing teams in each final score group, with 7 (offensive and defensive) variables differentiating winners from losers in close games, 16 in unbalanced games, and 11 in very unbalanced games. In all three types of game, the game-related statistics were shown to discriminate performance (85% or more), with two variables being discriminatory by game outcome (winning or losing teams) in all three cases: shots and goalkeeper-blocked shots

Physical exercise, detraining and lipid profile in obese children: a systematic review

Introducción. El desentrenamiento es la pérdida de las mejoras obtenidas por el ejercicio físico/entrenamiento tras su cese, aspecto poco estudiado en población infantil obesa. Así, el propósito del presente estudio fue evaluar los efectos del desentrenamiento sobre el perfil lipídico (HDL, LDL, colesterol total y triglicéridos) en niños obesos. Población y métodos. Los estudios fueron recuperados mediante la búsqueda en siete bases de datos. Dicha búsqueda se limitó a programas de ejercicio físico de, al menos, ocho semanas de duración y su desentrenamiento, y se evaluó el perfil lipídico de niños obesos. Se calculó el tamaño del efecto (TE), sus intervalos de confianza del 95% y la heterogeneidad de los estudios a través de la Q de Cochrane (modelo de efectos aleatorios). Resultados. Cinco estudios cumplieron los criterios de inclusión y fueron seleccionados para su revisión (n= 330). En general, los resultados intragrupo (postest vs. desentrenamiento) mostraron que, tras el desentrenamiento, el nivel en sangre del colesterol HDL (TE= 0,12) y el colesterol total aumentaron (TE= 1,41). Del mismo modo, los resultados intergrupo (grupo experimental vs. grupo control) confirmaron el aumento del colesterol HDL tras el desentrenamiento (TE= 0,49). Conclusiones. Los resultados de esta revisión sistemática sugieren que el desentrenamiento tras un programa de ejercicio físico no genera una pérdida significativa de los beneficios obtenidos sobre el perfil lipídico de los niños obesos. No obstante, debido al número de estudios analizados y a la heterogeneidad observada en los análisis y en el tiempo considerado como desentrenamiento (de 12 a 48 semanas), se requiere un mayor número de estudios de calidad para obtener resultados más concluyentes.Introduction. Detraining is the loss of improvements obtained through the participation in physical exercise/training after training cessation, an aspect that has been poorly studied in obese child population. Therefore, the purpose of this study was to assess the effects of detraining on the lipid profile (HDL, LDL, total cholesterol and triglycerides) of obese children. Population and Methods. Studies were collected through a search across seven databases. The search was limited to physical exercise programs that lasted, at least, eight weeks and the corresponding detraining, with an assessment of obese children lipid profile. Effect size (ES), 95% confidence intervals and study heterogeneity were estimated using Cochran’s Q test (random effects model). Results. Five studies complied with the inclusion criteria and were selected for review (n= 330). In general, intra-group results (posttest versus detraining) indicated that, following detraining, blood levels of HDL cholesterol (ES= 0.12) and total cholesterol (ES= 1.41) were increased. Likewise, inter-group results (experimental group versus control group) confirmed the increase of HDL cholesterol following detraining (ES= 0.49). Conclusions. The results of this systematic review suggest that detraining after a physical exercise program does not lead to a significant loss of the benefits gained in relation to the lipid profile of obese children. However, given the number of analyzed studies and the heterogeneity observed in the analyses and the period defined as detraining (12 to 48 weeks), a higher number of well designed studies is required to obtain more conclusive results

ρ-MtreeRing: A graphical user interface for X-ray microdensity analysis

Producción CientíficaWood microdensitometry provides an integrated measurement of inter and intra-annual changes in wood anatomy and lignification. Although it can be acquired through a wide array of techniques, X-ray-based techniques are still the standard. Conversion of a grayscale X-ray image to density and annual ring boundaries delimitation is performed through image analysis software. Proprietary software has dominated these applications, albeit Free Open Source Software (FOSS) has been developed recently. We present ρ-MtreeRing, a user-friendly FOSS that streamlines the entire microdensitometry analysis process through a graphical user interface based on Shiny R Software without any programming knowledge. We compared the results of this program with the most widely used commercial software (WinDendro), showing the validity of the results. ρ-MtreeRing can be personalized and developed by the microdensitometry research community.Junta de Castilla y León (VA171P20)Ministerio de Ciencia e Innovación y Ministerio de Universidades grant number CGL2017-87309-P (MGH PRE2018-084106) and project PROWARM (PID2020-118444GA-I00)Universidad Politécnica de Madrid (through Project RP200060107)Centro de Recursos Hídricos para la Agricultura y la Minería (ANID/FONDAP/15130015

Pulse shapes effects on backscattering Brillouin gain for distributed fiber sensing

Distributed fiber sensing based on Brillouin gain scattering (BGS) principle is a useful way to develop devices capable to measure temperature and/or strain in optical fibers. In these distributed sensors, spatial resolution is a topic of special interest in the distributed fiber sensing field. The influence of the probe-pulse shape in the interaction between the pulsed light and the continuous wave laser in a pump-probe system. This study has the purpose of improving the spatial resolution of the measurement without losing stability in the BGS is presented. Also it is showed how the backscattering Brillouin gain is affected by inducing variations on the final value of the BGS intensity. Theoretical analysis of the probe pulse in the Brillouin shift and intensity values using triangular, sinusoidal and saw tooth shapes around the phonon lifetime (~10ns) are presented; and also considerations and conclusions are explained

Identification of carbon black in military textiles using infrared imaging techniques

The carbon black has been used in military fabrics to comply with the color requirements and infrared radiation lessen- ing criteria. Currently, military industries don’t distinguish between fabrics with carbon black fibers or with carbon black into dyes or prints. The latter initially allows us to comply with the color specifications in the visible and infrared, but fabrics are degraded with use losing that initial capacity. The inclusion of carbon black in the fiber gets that the fab- ric doesn’t degrade with the wear, washed and dried, ensuring the accomplishment of the specifications all the time. The use of infrared imaging will allow us to define a method to discriminate those textiles with carbon black in their fibers from those which are dyed or printed

Co/Ni multilayers ordered according to a periodic, Fibonnacci and Thue Morse sequence obtained by Atomic Layer Deposition

Co/Ni multilayers ordered according to a periodic, Fibonnacci and Thue Morse sequence have been obtained by Atomic Layer Deposition and a subsequent process of thermal reduction. The morphology of the multilayers was investigated by scanning electron microscopy, while longitudinal hysteresis curves were obtained by magneto-optical magnetometry of Kerr effect. The morphology of the films varies as a function of their sequence and thickness. Multilayers exhibit coercivities much higher than expected from samples synthesized with other methods. The control of the magnetic properties of multilayers, as a function of their sequence, may allow their use in spintronic devices.This work was supported by Fondequip (refs. EQM120045, EQM140092 and EQM160155), Fondecyt (refs. 1200302, 3180042 and 1201491), Basal Project (ref. AFB180001) and Universidad Central (ref. CIP2018006).Peer reviewe

Self-determined motivation, physical exercice and diet in obese children: a three-year follow-up study

El objetivo del presente estudio fue realizar un seguimiento a largo plazo (tres años y seis meses de intervención “desentrenamiento”) sobre la influencia de un programa de ejercicio físico con o sin dieta sobre la motivación de los niños obesos sedentarios. Los participantes fueron 27 niños (8-11 años), divididos en dos grupos. El grupo G1 siguió un programa de ejercicio físico (tres sesiones de 90 minutos por semana) y el grupo G2 siguió este programa de ejercicio físico más una dieta baja en calorías. La motivación de los participantes para participar en el ejercicio se midió usando el Cuestionario de Regulación de la Conducta en el Ejercicio Físico-2. Ambos grupos mostraron mejoras en la motivación en el tercer año y en el período de desentrenamiento (en los grupos G1 y G2, respectivamente) y en la regulación intrínseca de comportamiento de ejercicio (en los grupos G1 y G2, respectivamente). Esto parece ser indicativo de la idoneidad del ejercicio físico a largo plazo para generar una mayor motivación autónoma, y por lo tanto, cambios hacia hábitos de vida saludables más estables en el tiempo.The present study’s objective was to track long term (three years intervention and six months “detraining”) the influence of an exercise program with or without diet on the motivation of sedentary obese children. The participants were 27 children (8-11 years), divided into two groups according to the program they followed. The G1 group followed a physical exercise program (three 90-minute sessions per week), and the G2 group this physical exercise program plus a low calorie diet. The participants’ motivation to engage in exercise was measured using the Behavioural Regulation in Exercise Questionnaire-2. Both groups showed improvements in motivation in the 3rd year and in the detraining period (in the G1 and G2, respectively) and in intrinsic regulation of exercise behaviour (in the G1 and G2, respectively). There were also differences between the two groups in external regulation in the intervention and detraining periods. This appears to be indicative of the appropriateness of long-term physical exercise to generate greater autonomous motivation, and hence changes towards healthy living habits that are stable in time.Trabajo patrocinado por: Fondos FEDER y Junta de Extremadura. Consejería de Infraestructura y Desarrollo Tecnológico. PRI07B092, PO10012, GR10171 Antonio García Hermoso una beca de Formación de Personal Investigador (Fondos FEDER y Junta de Extremadura. Consejería de Economía, Comercio e Innovación). PRE08060peerReviewe

Physical exercise, detraining and lipid profile in obese children: a systematic review

Introducción. El desentrenamiento es la pérdida de las mejoras obtenidas por el ejercicio físico/entrenamiento tras su cese, aspecto poco estudiado en población infantil obesa. Así, el propósito del presente estudio fue evaluar los efectos del desentrenamiento sobre el perfil lipídico (HDL, LDL, colesterol total y triglicéridos) en niños obesos. Población y métodos. Los estudios fueron recuperados mediante la búsqueda en siete bases de datos. Dicha búsqueda se limitó a programas de ejercicio físico de, al menos, ocho semanas de duración y su desentrenamiento, y se evaluó el perfil lipídico de niños obesos. Se calculó el tamaño del efecto (TE), sus intervalos de confianza del 95% y la heterogeneidad de los estudios a través de la Q de Cochrane (modelo de efectos aleatorios). Resultados. Cinco estudios cumplieron los criterios de inclusión y fueron seleccionados para su revisión (n= 330). En general, los resultados intragrupo (postest vs. desentrenamiento) mostraron que, tras el desentrenamiento, el nivel en sangre del colesterol HDL (TE= 0,12) y el colesterol total aumentaron (TE= 1,41). Del mismo modo, los resultados intergrupo (grupo experimental vs. grupo control) confirmaron el aumento del colesterol HDL tras el desentrenamiento (TE= 0,49). Conclusiones. Los resultados de esta revisión sistemática sugieren que el desentrenamiento tras un programa de ejercicio físico no genera una pérdida significativa de los beneficios obtenidos sobre el perfil lipídico de los niños obesos. No obstante, debido al número de estudios analizados y a la heterogeneidad observada en los análisis y en el tiempo considerado como desentrenamiento (de 12 a 48 semanas), se requiere un mayor número de estudios de calidad para obtener resultados más concluyentes.Introduction. Detraining is the loss of improvements obtained through the participation in physical exercise/training after training cessation, an aspect that has been poorly studied in obese child population. Therefore, the purpose of this study was to assess the effects of detraining on the lipid profile (HDL, LDL, total cholesterol and triglycerides) of obese children. Population and Methods. Studies were collected through a search across seven databases. The search was limited to physical exercise programs that lasted, at least, eight weeks and the corresponding detraining, with an assessment of obese children lipid profile. Effect size (ES), 95% confidence intervals and study heterogeneity were estimated using Cochran’s Q test (random effects model). Results. Five studies complied with the inclusion criteria and were selected for review (n= 330). In general, intra-group results (posttest versus detraining) indicated that, following detraining, blood levels of HDL cholesterol (ES= 0.12) and total cholesterol (ES= 1.41) were increased. Likewise, inter-group results (experimental group versus control group) confirmed the increase of HDL cholesterol following detraining (ES= 0.49). Conclusions. The results of this systematic review suggest that detraining after a physical exercise program does not lead to a significant loss of the benefits gained in relation to the lipid profile of obese children. However, given the number of analyzed studies and the heterogeneity observed in the analyses and the period defined as detraining (12 to 48 weeks), a higher number of well designed studies is required to obtain more conclusive results

Support vector machines in hyperspectral imaging spectroscopy with application to material identification

A processing methodology based on Support Vector Machines is presented in this paper for the classification of hyperspectral spectroscopic images. The accurate classification of the images is used to perform on-line material identification in industrial environments. Each hyperspectral image consists of the diffuse reflectance of the material under study along all the points of a line of vision. These images are measured through the employment of two imaging spectrographs operating at Vis-NIR, from 400 to 1000 nm, and NIR, from 1000 to 2400 nm, ranges of the spectrum, respectively. The aim of this work is to demonstrate the robustness of Support Vector Machines to recognise certain spectral features of the target. Furthermore, research has been made to find the adequate SVM configuration for this hyperspectral application. In this way, anomaly detection and material identification can be efficiently performed. A classifier with a combination of a Gaussian Kernel and a non linear Principal Component Analysis, namely k-PCA is concluded as the best option in this particular case. Finally, experimental tests have been carried out with materials typical of the tobacco industry (tobacco leaves mixed with unwanted spurious materials, such as leathers, plastics, etc.) to demonstrate the suitability of the proposed technique