Influence of change of regulation on the goals achieved in futsal

Este artículo analiza la hipótesis de que los cambios introducidos en la normativa del fútbol sala modifican su lógica interna disminuyendo los goles totales y modificando su forma de ejecución. El objetivo de estudio es analizar los goles y manera de realizarlos en una temporada anterior y posterior al cambio de reglamentación para establecer cuantitativamente cómo el cambio de reglas del 2.006 afecta al juego. Se analizaron 3.126 goles en 442 partidos, 1.771 goles en 232 partidos en la temporada 2.002-2.003 y 1.355 goles en 210 partidos en la temporada 2.013-2.014. El método utilizado fue la metodología observacional, se utilizó el programa Lince vl.2.1. Los resultados muestran una reducción estadísticamente significativa en el número de goles de una temporada a otra. En la temporada 2.002-2.003 se lograron 1.927 goles con un promedio por equipo de 120,38 ± 28,58, y en la temporada 2.013-2.014 1.355 goles con un promedio de 90,40 ± 27,72This article analyses the hypothesis that the changes introduced in the regulation of futsal modify the inner logic of the game, what turns into a reduction of total goals and a significant variation in the form of execution. Therefore, it is set out as aim of study to analyze the goals and the way to achieve them in a previous season and in one subsequent to the change of regulation in order to establish quantitatively how the 2006 rules change has affected the game. Totally, 3126 goals were analyzed, scored in 442 matches, distributed in 1771 goals in 232 matches in season 2002-2003 and 1355 goals in 210 matches in season 2103-2014. The method used in this study was observational methodology. For the observational process, it has been used the observational software Lince vl.2.1. It has been carried out using the IBM SPSS 19.0.0 program. The results show a statistically significant reduction in the number of goals from one season to another. In season 2002-2003, 1927 goals were achieved with an average by team of 120.38±28.58, by 1355 goals in season 2013-2014 of 90.40±27.7

Exercise addiction and satisfaction of fitness center users as precursors to the intention of continuing to engage in physical activity

Exercise addiction occurs when a person engages in excessive physical activity until they lose control. Among individuals attending fitness centers, the risk of developing exercise addiction has been estimated to be close to 10%. The objective of this study was to determine whether exercise addiction may be an antecedent of satisfaction with the service received and/or of the intention of continuing to partake in leisure-time physical activity at fitness centers in a direct or indirect manner. A total of 361 individuals (29.05 ± 11.40 years old) who were physically active at Spanish fitness centers were asked to respond to a questionnaire on exercise addiction, satisfaction with the sports service, and their intention to continue to engage in physical activity. A multi-group analysis was conducted to check for differences in relationships by sex. The results show the relationships between addiction, satisfaction, and intention to continue physical activity. The standardized values display differences between men and women, with women exhibiting the highest values for the relationships between addiction and the rest of the constructs. Satisfaction with the sports service is a mediator in the relationship between exercise addiction and intention to engage in leisure-time physical activity

Medidas de prevención de lesiones de futsal. Una comparación entre dos temporadas

Diferentes estudios evidencian que la carga de entrenamiento es una causa importante en la afectación de lesiones deportivas y han identificado variables como el volumen y la intensidad del entrenamiento claves para la prevención de lesiones. El objetivo de este estudio es reducir la incidencia de lesiones implementando seis medidas preventivas. El estudio incluyó 12 jugadores del primer equipo de "Sala 10 Zaragoza" de la Primera División de la Liga de Futsal de España. Se trata de un estudio longitudinal comparativo de la incidencia de lesiones en la temporada 2016-2017 y la temporada 2004-2005. Los resultados obtenidos revelan un total de 28 y 108 lesiones registradas y una incidencia lesional de 6, 86 y 19, 72 durante la temporada 2016-2017 y la temporada 2004-2005, respectivamente. El número de minutos de partido perdidos fue mucho más bajo en la temporada 2016-2017, en comparación con la temporada 2004-2005, 6.660 frente a 31.500 minutos

HF spectrum activity prediction model based on HMM for cognitive radio applications

Although most of the research on Cognitive Radio is focused on communication bands above the HF upper limit (30 MHz), Cognitive Radio principles can also be applied to HF communications to make use of the extremely scarce spectrum more efficiently. In this work we consider legacy users as primary users since these users transmit without resorting to any smart procedure, and our stations using the HFDVL (HF Data+Voice Link) architecture as secondary users. Our goal is to enhance an efficient use of the HF band by detecting the presence of uncoordinated primary users and avoiding collisions with them while transmitting in different HF channels using our broad-band HF transceiver. A model of the primary user activity dynamics in the HF band is developed in this work to make short-term predictions of the sojourn time of a primary user in the band and avoid collisions. It is based on Hidden Markov Models (HMM) which are a powerful tool for modelling stochastic random processes and are trained with real measurements of the 14 MHz band. By using the proposed HMM based model, the prediction model achieves an average 10.3% prediction error rate with one minute-long channel knowledge but it can be reduced when this knowledge is extended: with the previous 8 min knowledge, an average 5.8% prediction error rate is achieved. These results suggest that the resulting activity model for the HF band could actually be used to predict primary users activity and included in a future HF cognitive radio based station

Assessment of Volleyball Technical Learning Using Peer Observational Methodology in University Students

The European Higher Education Area defends training methodologies so that students learn to learn. The objective of the study is to know the assessment of the students about the teaching-learning process of the volleyball sports technique through the observational methodology by pairs. 215 students of the Degree in Physical Activity and Sports Sciences participated in the second-year subject “Collaborative-opposition collective sports” during the four years between 2015 and 2019. The students of each course are divided into di fferent practice groups presenting a diversi fied initial training in the field of volleyball, although the same intervention was carried out with all of them in the thematic block of volleyball during the first trimester. A descriptive study has been carried out in which the central tendency and dispersion have been calculated. The groups were compared using MANOVA tests. The validated scale (Álvarez et al., 2020) has been used to evaluate the process of Teaching Sports Technique by Peers in Higher Education. The students value the teaching-learning process very positively, obtaining averages between 4.00 and 4.50 out of 5.00. The intervention had effects on the evaluation of the students, obtaining significant differences in total scale and factors: design, phases, methodology and observation, allowing teachers to improve the teaching-learning process of volleyball sports technique. © 2022, Universidad Catolica San Antonio Murcia. All rights reserved

Riesgo de alteraciones músculo-esqueléticas en cuidadores informales de personas con parálisis cerebral

This paper analyzes musculoskeletal disorders (MSD) of informal caregivers of people with cerebral palsy. Most of these informal caregivers present MSD arising from the combination of multiple intrinsic and extrinsic factors. Emphasis is then placed on the sociodemographic characteristics of the informal caregiver and their main MSD. An analysis of risk factors is established that gives special importance to the role of physical exercise in the presence of pai

Inactivación de patógenos en residuos avícolas mediante el compostaje

The aim of the study was to inactivate pathogenic microorganisms through the composting process for 120 hours using residues of organic compounds in two proportions: C/N 25 composed of 25.31, 40.42 and 34.27% and C/N 35 for 44.61, 12.90 and 42.50% of bean straw, fresh sorghum forage and dry chicken manure, respectively. The variables analysed were temperature, microbial load (mesophilic aerobics, total and faecal coliforms) and reduction of Escherichia coli and Salmonella Typhimurium, artificially inoculated in three levels of the compost piles. The C/N 35 treatment reached the highest temperature and inactivation of the pathogenic microorganisms evaluated during the thermophilic phase of composting. The temperatures reached were not homogeneous between the levels of the piles, being lower in the upper level (p<0.000). This study suggests the implementation of composting as an efficient alternative for the disposal of poultry waste.El objetivo del estudio fue inactivar microorganismos patógenos mediante el proceso de compostaje durante 120 horas utilizando residuos de compuestos orgánicos en dos proporciones: C/N 25 compuesto por 25.31, 40.42 y 34.27% y C/N 35 por 44.61, 12.90 y 42.50% de paja de frijol, forraje fresco de sorgo y estiércol seco, respectivamente. Las variables analizadas fueron temperatura, carga microbiana (aeróbicos mesófilos, coliformes totales y fecales) y reducción de Escherichia coli y Salmonella Typhimurium inoculadas artificialmente en tres niveles de las pilas de compost. El tratamiento C/N 35 alcanzó la mayor temperatura e inactivación de los microorganismos patógenos evaluados durante la fase termofílica del compostaje. Las temperaturas alcanzadas no fueron homogéneas entre los niveles de las pilas siendo inferior en el nivel superior (p<0.000). Este estudio sugiere la implementación del compostaje como una alternativa eficiente para la disposición de residuos avícolas

Health-related quality of life with palbociclib plus endocrine therapy versus capecitabine in postmenopausal patients with hormone receptor–positive metastatic breast cancer: Patient-reported outcomes in the PEARL study

Background: The PEARL study showed that palbociclib plus endocrine therapy (palbociclib/ET) was not superior to capecitabine in improving progression-free survival in postmenopausal patients with metastatic breast cancer resistant to aromatase inhibitors, but was better tolerated. This analysis compared patient-reported outcomes. Patients and methods: The PEARL quality of life (QoL) population comprised 537 patients, 268 randomised to palbociclib/ET (exemestane or fulvestrant) and 269 to capecitabine. Patients completed the European Organisation for Research and Treatment of Cancer QLQ-C30 and QLQ-BR23 and EQ-5D-3L questionnaires. Changes from the baseline and time to deterioration (TTD) were analysed using linear mixed-effect and stratified Cox regression models, respectively. Results: Questionnaire completion rate was high and similar between treatment arms. Significant differences were observed in the mean change in global health status (GHS)/QoL scores from the baseline to cycle 3 (2.9 for palbociclib/ET vs. -2.1 for capecitabine (95% confidence interval [CI], 1.4–8.6; P = 0.007). The median TTD in GHS/QoL was 8.3 months for palbociclib/ET versus 5.3 months for capecitabine (adjusted hazard ratio, 0.70; 95% CI, 0.55–0.89; P = 0.003). Similar improvements for palbociclib/ET were also seen for other scales as physical, role, cognitive, social functioning, fatigue, nausea/vomiting and appetite loss. No differences were observed between the treatment arms in change from the baseline in any item of the EQ-5D-L3 questionnaire as per the overall index score and visual analogue scale. Conclusion: Patients receiving palbociclib/ET experienced a significant delay in deterioration of GHS/QoL and several functional and symptom scales compared with capecitabine, providing additional evidence that palbociclib/ET is better tolerated. Trial registration number: NCT02028507 (ClinTrials.gov). EudraCT study number: 2013-003170-27. © 2021 The Author(s