AirBadminton for Physical Activity and Well-Being in Spanish Students: Post-COVID-19.

Sports commitment is a psychological construct that has been studied since the 1990s and that has been used in the educational field. The main objective of this study is to analyze the suitability of AirBadminton to acquired sports commitment and the classroom climate generated through the practice of AirBadminton. It was also proposed to analyze the physical, technical and temporal characteristics of AirBadminton. The research was developed with 1298 students between 13 and 15 years of age (mean ± standard deviation; body height: 1.61 ± 7.08 m; body mass 59.68 ± 7.11 kg); one group developed an AirBadminton didactic unit forming the experimental group, and a second group carried out other net games, being the control group. The following instruments were used: the Sports Commitment Questionnaire-2 CCD-2, the Brief Class Climate Scale EBCC, the analysis software LongoMatch version 1.10.1, the heart rate (HR) and the distance traveled of some participants were monitored with different Polar brand sensors (Polar H10 and Verity Sense) and two SPI-Elite GPS devices from the GPSports brand. Results show that sports commitment was increased in the experimental group. AirBadminton shows aspects that are directly and positively related to intrinsic motivation and adherence to sports practice; it improves the classroom climate and increases the desire to excel of the participants.

Análisis bifactorial de la Escala de Autoestima de Rosenberg y relación entre actividad física y autoestima en adolescentes / Bifactorial analysis of the Rosenberg Self-esteem Scale and relationship between physical activity and self-esteem in adolescents

La autoestima es un constructo de gran importancia en la adolescencia que favorece la salud y el bienestar psicológico de los escolares. En este trabajo se analiza la bidimensionalidad de la Escala de Autoestima de Rosenberg (EAR) mediante análisis factorial confirmatorio, así como las relaciones existentes entre la práctica de actividad física, Autoestima Global y las dimensión positiva y negativa de la autoestima. Se llevó a cabo en una muestra de 429 estudiantes de Educación Secundaria Obligatoria y Bachillerato de la ciudad de Sevilla (Andalucía). Los instrumentos utilizados fueron Cuestionario de Actividad Física en adolescentes (PaqA de Martínez-Gómez et al., 2009) y Escala de Autoestima de Rosenberg (EAR, 1965) versión de Atienza et al. (2000). Los resultados obtenidos permiten aceptar la bidimensionalidad de la escala, así mismo se constató buenos niveles de autoestima global y una tendencia a una mejor autoestima en los adolescentes activos. La práctica de actividad física se asocia con la dimensión Autoestima Positiva, pero no con la Autoestima Negativa y la Autoestima Global. (AU)

Self-esteem is a construct of great importance in adolescence that favors the health and psychological well-being of schoolchildren. In this paper, the two-dimensionality of the Rosenberg Self-Esteem Scale (RAS) is analyzed through confirmatory factor analysis, as well as the relationships between the practice of physical activity (PA), Global self-esteem, and the positive and negative dimensions of self-esteem. It was carried out in a sample of 429 students in the high school of the city of Seville (Andalusia). The instruments used were the Physical Activity Questionnaire in adolescents (PaqA, Martínez-Gómez et al., 2009) and the Rosenberg Self-Esteem Scale (EAR, 1965) version of Atienza et al. (2000). The results obtained allow us to accept the two-dimensionality of the scale, as well as good levels of global self-esteem and a tendency to better self-esteem in active adolescents. The practice of PA is associated with the Positive Self-esteem dimension, but not with Negative Self-esteem or Global Self-esteem. (AU)

Coronavirus Disease Transmission Prevented in an Endoscopy Unit with Universal Protective Measures and No Systematic Preprocedural Testing.

BACKGROUND AND AIMS: Even after two years of pandemic, there are still uncertainties on how to proceed when we schedule endoscopic procedures. During the COVID-19 pandemic, some scientific societies recommended universal preprocedural testing for all patients. However, other societies recommended against and considered enough to maintain strict infection control strategies. Our aim was to evaluate this approach in order to see if it was safe for both patients and healthcare workers to proceed with the endoscopies without performing a systematic PCR on all patients. METHODS: Retrospective chart review of all patients undergoing endoscopy without preprocedural COVID testing at our center from March 2020 to May 2021. PCR tests performed in the patients receiving an endoscopic procedure were analyzed, and patients who tested positive between 14 days before and after the endoscopic procedure were selected. The registry of the endoscopy unit members participating in these procedures was also analyzed. RESULTS: A total of 10,132 procedures were performed in the unit with 26 patients infected with SARS-CoV-2. Nineteen of these procedures were performed in patients with unknown SARS-CoV-2 carrier status. In 23 (88.5%) cases, transmission occurred through social or familial contact, and in 3 (11.5%), transmission occurred in the hospital. Four health care workers became infected during this period and none of them were related to the endoscopic procedures performed in patients with COVID-19. CONCLUSIONS: SARS-CoV-2 positive testing in asymptomatic ambulatory patients is rare and the adequate use of individual protective measures emerges as the main way to control the spread of COVID-19 infection in endoscopy centers.

The Relationship between Speed and Strength in the Beach Volleyball Serve.

The objective of this study was to analyze the relationship between isometric force produced in different joints and its effects on the power kick serve speed in beach volleyball as a predictive aspect to improve sports performance. Seven athletes competing at national and international levels (mean ± standard deviation; age: 21.6 ± 3.20 years; body height: 1.87 ± 0.08 cm; body mass 80.18 ± 7.11 kg) were evaluated using maximum isometric force contractions (i.e., spinal and knee extension, grip by a hand dynamometer (handgrip), internal shoulder rotation, shoulder flexion, elbow flexion and extension, and wrist flexion). Speed of the ball was recorded with a pistol radar and force was measured with a strain gauge. Results showed a relationship between isometric force developed in the internal rotation of the shoulder and speed of the ball (r = 0.76*; p < 0.05). In the remaining isometric exercises, positive low to moderate correlations were found in the spine and knee extension (r = 0.56; p = 0.200) and elbow flexion (r = 0.41; p = 0.375). On the other hand, the remaining isometric exercises obtained weak or non-significant correlations. Force developed in the internal rotation of the shoulder highly correlated with the speed of the power kick, explaining, together with the elbow flexion and the extension of the knee and back, much of the variability of the power kick of beach volleyball athletes.

Notational Comparison Analysis of Outdoor Badminton Men's Single and Double Matches.

The objectives of this study were to determine the results of the analysis of single and double outdoor badminton men's matches and to determine the relationship between technical and tactical aspects in a study organized by the BWF (Badminton Word Federation), on a sand surface. Twenty men's singles matches were recorded using video cameras and analysed with a Dartfish video analysis software package. Along with this, percentages of use of technical elements were analysed by comparing the different modalities. For the single format Lob, Clear, Drop, Smash, Drive were used, different from the double format that used Lob, Clear, Drop, Smash, Drive. The study confirmed the applicability of computerized notation analysis to determine the characteristics of Outdoor Badminton on sand.

Corrigendum: Performance Indicators in Young Elite Beach Volleyball Players.

[This corrects the article DOI: 10.3389/fpsyg.2019.02712.].

Technical-Tactical Analysis of the Players of the Left and Right Wing in Elite Soccer.

In today's soccer, teams are increasingly better trained both physically and tactically, hence different game styles can be identified and differences between them reduced. However, without an exhaustive analysis of reality, the view can lead to the extraction of erroneous conclusions, and what seems to be a team with a marked offensive profile is a mere illusion, resulting to be a team that develops a perfectly balanced game. In this paper, an analysis of technical-tactical performance of players who occupied both wings in an elite team was made, taking as reference the Spanish national soccer team as the model of international game to imitate in the last decade. The development of this paper was located within the observational methodology, using the polar coordinates technique for the analysis of the obtained data. The results showed how, despite identifying offensive profiles within technical-tactical performance of players that occupied the outer wings or lanes of the playing field, their tactical means and orientations diverged from each other. The results showed a more offensive profile and with higher technical complexity of players that occupied the left wing, while players that held the right wing showed a more defensive and recuperative profile, indicating a less vertical and complex style of play at a technical level with the forward as an offensive reference.

Performance Indicators in Young Elite Beach Volleyball Players.

PURPOSE: The aim of this study was to analyze tactical and technical behavior across different ages and genders in young, elite beach volleyball players. METHODS: Forty teams from the Under-18, Under-20, Under-21, and Under-22 from semifinals and finals of the 2016 World Championships and the 2016 European Championship were analyzed. The sample was composed of 69 sets. The variables studied included: Rally time, set time, match time, serve efficacy (standing serve, floating serve, and jump serve), setting efficacy (forearm, overhand, other, and 2nd attack), attack efficacy, and block efficacy. Student's t and Mann-Whitney U-tests were used to analyze specific differences between categories. RESULTS: Significant differences (p < 0.05) in the pass performance, forearm pass in men (from 78.2 to 49.1%), and overhand pass in men (from 12.2 to 40.45%). In addition, in women forearm pass (from 88.5 to 76.3%) and overhand pass in women (from 1.2 to 9.35%). No significant differences in the effectiveness of attack, rally time, serve, and block efficacy. CONCLUSION: Tactical considerations and gender-specific differences in technical variables may be important for training in young players.

Glutamatergic stimulation induces GluN2B translation by the nitric oxide-Heme-Regulated eIF2α kinase in cortical neurons.

The activation of N-Methyl D-Aspartate Receptor (NMDAR) by glutamate is crucial in the nervous system function, particularly in memory and learning. NMDAR is composed by two GluN1 and two GluN2 subunits. GluN2B has been reported to participate in the prevalent NMDAR subtype at synapses, the GluN1/2A/2B. Here we studied the regulation of GluN2B expression in cortical neurons finding that glutamate up-regulates GluN2B translation through the action of nitric oxide (NO), which induces the phosphorylation of the eukaryotic translation initiation factor 2 α (eIF2α). It is a process mediated by the NO-heme-regulated eIF2α kinase (HRI), as the effect was avoided when a specific HRI inhibitor or a HRI small interfering RNA (siHRI) were used. We found that the expressed GluN2B co-localizes with PSD-95 at the postsynaptic ending, which strengthen the physiological relevance of the proposed mechanism. Moreover the receptors bearing GluN2B subunits upon NO stimulation are functional as high Ca2+ entry was measured and increases the co-localization between GluN2B and GluN1 subunits. In addition, the injection of the specific HRI inhibitor in mice produces a decrease in memory retrieval as tested by the Novel Object Recognition performance. Summarizing our data suggests that glutamatergic stimulation induces HRI activation by NO to trigger GluN2B expression and this process would be relevant to maintain postsynaptic activity in cortical neurons.