"Encephalapp Stroop": Validity and reliability of a smartphone app to measure cognitive performance in physically active subjects.

This study aimed to analyze the validity and reliability of a smartphone app (i.e., Encephalapp Stroop) to measure cognitive performance. Ten physically active individuals (mean age: 25.2 ± 4.3 years) participated in three laboratory visits. In a randomized sequence, subjects completed cognitive assessments using the app and a computer separately. The response times from 100 measurements for congruent and incongruent stimuli were compared between the two devices (app and computer) using the intraclass correlation coefficient, Pearson product-moment correlation coefficient (r), Cronbach's alpha (α), and Bland-Altman plots. There was excellent agreement between the computerized Stroop and the app version for response times for congruent (ICC = 0.806, p < 0.001; Bland-Altman bias = 41.3 ± 56.4 ms, p < 0.001) and incongruent stimuli (ICC = 0.755, p < 0.001; Bland-Altman bias = 76.4 ± 75.1 ms, p < 0.001). In comparison to the computerized version, the app demonstrated a moderate correlation for response times of congruent (r = 0.678, p < 0.001) and incongruent (r = 0.623, p < 0.001) stimuli. The results of the present study indicate that the response times of congruent and incongruent stimuli can be easily, accurately, and reliably evaluated using a mobile app.

Analyzing the psychological variables linked to performance in beach volleyball: an integrative review and practical recommendations / Análisis de las variables psicológicas vinculadas al rendimiento en voleibol playa: una revisión integradora y recomendaciones prácticas / Análise das variáveis psicológicas ligadas ao desempenho no voleibol de praia: uma revisão integrativa e recomendações práticas

Beach volleyball is an important team sport in which physical, technical, tactical,and psychological/social aspects are fundamental to sporting performance. However, this is the first review to analyse scientific production on psychological variables in beach volleyball. This is an integrative review in which a systematic search was carried out in five electronic databases (PubMed/MEDLINE, SPORTDiscus/EBSCO, SciELO, Scopus and BIREME) until September 2022. The terms used were "beach volleyball" OR "voleibolde praia" OR "vôlei de praia". In addition, the search included research with athletes, acute and chronic outcomes, and studies of various methods (e.g.,experimental, observational) involving psychological variables. The initial search identified 652 articles, and after the manual search and application of the inclusion criteria, 18 studies were integrated into a final synthesis.Most of the studies were published between 2011 and 2022 (n= 14; 77.78%). Observational design was the main method used (n= 10; 55.56%). The studies were grouped into nine major topics for synthesis: stress situation, activation levels, concentration, goal orientation and motivation, mental fatigue and performance, anxiety,and performance, discouraging environments, relationships between team members, coping strategies. In general, social relationships and self-control appear significant for performance; thus,coaches must serve as role models for players and sports psychologists can aid in monitoring psychological variables, team dynamics, and develop psychological skills.(AU)

El vóleyplaya es un importante deporte de equipo en el que los aspectos físicos, técnicos, tácticos y psicológicos/sociales son fundamentales para el rendimiento deportivo. Sin embargo, esta es la primera revisión que analiza la producción científica sobre variables psicológicas en vóleyplaya. Se trata de una revisión integradora en la que se realizó una búsqueda sistemática en cinco bases de datos electrónicas (PubMed/MEDLINE, SPORTDiscus/EBSCO, SciELO, Scopus y BIREME) hasta septiembre de 2022. Los términos utilizados fueron "beach volleyball" OR "voleibol de praia" OR "vôlei de praia". Además, la búsqueda incluyó investigaciones con atletas, intervenciones agudas y crónicas, estudios de diversos métodos (e.g., experimentales, observacionales) que implicaran variables psicológicas. La búsqueda inicial identificó 652 artículos y, después de la búsqueda manual y la aplicación de los criterios de inclusión, 18 estudios se integraron en una síntesis final. La mayoría de los estudios fueron publicados entre 2011 y 2022 (n= 14; 77.78%). El diseño observacional fue el principal método utilizado (n= 10; 55.56%). Los estudios se agruparon en nueve grandes temas para la síntesis: situación de estrés, niveles de activación, concentración, orientación a objetivos y motivación, fatiga mental y rendimiento, ansiedad y rendimiento, entornos desalentadores, relaciones entre los miembros del equipo, estrategias de afrontamiento. Las relaciones sociales y el autocontrol parecen ser importantes para el rendimiento, por lo quelos entrenadores deben comportarse como modelos para los deportistas. Además, los psicólogosdeportivos pueden ayudar a controlar las variables psicológicas, la dinámica del equipo y a desarrollar habilidades psicológicas.(AU)

O voleibol de praia é um importante esporte coletivo em que aspectos físicos, técnicos, táticos e psicológicos/sociais são fundamentais para o desempenho esportivo. No entanto, esta é a primeira revisão que teve como objetivo analisar a produção científica sobre variáveis psicológicas no voleibol de praia. Essa é uma revisão integrativa em que foi realizada uma busca em cinco bases de dados eletrônicas (PubMed/MEDLINE, SPORTDiscus/EBSCO, SciELO, Scopus e BIREME) até setembro de 2022, de forma sistemática. Os temos usados foram “beach volleyball” OU “voleibol de praia” OU “vôlei de praia”. Além disso, foram incluídos nessa busca pesquisas com atletas, intervenções agudas e crônicas, estudos de vários métodos (e.g., experimental, observacional) que envolviam variáveis psicológicas. A busca inicial identificou 652 artigos, após a busca manual e aplicação dos critérios de inclusão, 18 estudos foram integrados a uma síntese final. A maioria dos estudos foi publicada entre 2011 e 2022 (n= 14; 77.78%). O desenho observacional foi o principal método utilizado (n= 10; 55.56%). Os estudos foram agrupados em nove grandes tópicos para síntese: situação de estresse, níveis de ativação, concentração, orientação para metas e motivação, fadiga mental e desempenho, ansiedade e desempenho, ambientes desanimadores, relacionamento entre as partes da equipe, estratégias de enfrentamento. As relações sociais e o autocontrole parecem importantes para o desempenho, portanto treinadores devem se comporta como modelo para os atletas. Além disso, psicólogos do esporte podem ajudar a monitorizar as variáveis psicológicas, na dinâmica da equipa e desenvolver de competências psicológicas.(AU)

Pilot of Outpatient Preoperative Evaluation Through Teleassistance.

The pilot project of pre-anesthetic evaluation through telemedicine at the Pedro Ernesto University Hospital (HUPE) of the State University of Rio de Janeiro (UERJ) is a commendable initiative that aims to address the challenges faced by patients in accessing preoperative care. The objective of this study was to reduce the waiting time between the surgical recommendation and its clinical clearance for the procedure. A service flow was established to enable patients to undergo a comprehensive evaluation, including examination and complementary tests, during a single visit with a general practitioner. Based on the type of surgery and the patient's comorbidities, the Teleconsultants Center assessed the case and provided the necessary guidance. A total of 20 patients were attended to in face-to-face sessions during morning shifts, with the participation of Internal Medicine and Anesthesiology. Subsequently, these patients' evaluations were scheduled for teleconsultation to assess their surgical risk. There has been a significant reduction in the time between the surgical recommendation and the clearance for the procedure with a notable improvement compared to the previous protocol. These initial outcomes demonstrate the project's potential to enhance the efficiency and effectiveness of the preoperative evaluation process through teleassistance.

Young Basketball Players' Multiple Object Tracking Skills Were Unaffected by Stroop-Induced Mental Fatigue.

We aimed to examine the acute effect of mental fatigue on young basketball players' three-dimensional multiple object tracking (3D-MOT) skills. Our participants were 12 adolescent basketball players (M age = 16.66, SD = 1.87 years; M years of practice = 2.66, SD = 1.07 years). In nine lab visits, we used visits 1 to 7 to familiarize participants with 3D-MOT, a subjective scale of mental fatigue, and a Stroop task involving mental set shifting. In the last two visits, participants performed in both experimental (EXP) and control (CON) conditions that were presented in randomized order. In the EXP condition, participants performed 3D-MOT pre- and post-60 minutes of induced mental fatigue; in the CON condition, they watched a documentary. After each condition, B participants performed the National Aeronautics and Space Administration Task Load Index (NASA-TLX). 3D-MOT performance measures were the "score" and "fastest trial score success." The response time on the Stroop tasks increased throughout the mental fatigue inducement in the experimental condition (p = .0037). The NASA-TLX responses were higher following the EXP condition than following the CON condition for mental demand, temporal demand, and performance (all ps < .05). Still, there were no significant EXP versus CON differences on the 3D-MOT performance indicators.

Salivary hormone concentrations and technical-tactical performance indicators in beach volleyball: Preliminary evidence.

The present study aimed to investigate (i) differences in salivary testosterone and cortisol concentrations before, during, and after simulated beach volleyball match, depending on match outcome (winning vs. losing); (ii) the relationship between technical-tactical performance indicators in beach volleyball and salivary hormonal concentrations (i.e., testosterone, cortisol). We hypothesized (i) salivary testosterone concentrations would be greater in winners and salivary cortisol would be lower; (ii) testosterone would associate with positive technical-tactical performance and cortisol would associate with negative technical-tactical performance. Sixteen athletes participated in the study and were grouped according to the result of a simulated game (winners: n = 8; losers: n = 8). Salivary hormone concentration of testosterone and cortisol were measured by enzyme-linked immunosorbent assay (pre-match, post first set, and post-match), and the coefficient of performance and efficiency were used as technical-tactical performance indicators. Regarding testosterone, there was a large effect size for match outcome after the first set (i.e., Winner vs. Losers) and a moderate effect size for the time in winners (pre-match vs. post-match). Regarding cortisol, there was a moderate effect size of time in losers only (pre-match vs. post-match). Moreover, cortisol pre-match was negatively correlated with the offensive performance (attack performance coefficient: r = -0.541; p = 0.030; attack efficiency: r = -0.568; p = 0.022). In conclusion, the effect of match outcome on testosterone and cortisol levels was moderate in winners and losers, respectively. Moreover, resting cortisol concentration appears to be related to a diminished attack technical-tactical performance. However, larger confirmatory studies are required to confirm these data to corroborate winning increases testosterone levels and/or reduces cortisol in a sporting setting.

Effects of social media on smartphone use before and during velocity-based resistance exercise on cognitive interference control and physiological measures in trained adults.

The purpose is to analyze the effect of social networks on smartphones before and during velocity-based resistance exercise on the internal training load, heart rate variability (HRV), and cognitive interference control. Twelve trained adults volunteered to participate in this randomized and crossover design research study with three experimental conditions. The participants randomly performed a resistance exercise session, watching TV before (CON) the session or using social networks on a smartphone prior to (30SMA-P) and intra-session (SMA-INT). The participants underwent sets with repetitions [15RM load] up to 20% mean velocity loss. HRV indicators and cognitive interference control were measured before and 30-min after each experimental session. Internal training load was evaluated 30-min after each experimental session, which was calculated by the product between resistance exercise volume and RPE. No condition versus time interaction for HRV indicators (p > 0.05) was observed. It was not revealed a condition versus time interaction for cognitive interference control (p > 0.05). No condition effect for internal training load (p > 0.05) was observed. It was concluded that 30-min of social networks on smartphones before or intra-session resistance exercise had no effects on HRV indicators, cognitive interference control, and internal training load in trained adults.

Mental fatigue and ball sports: a narrative review focused on physical, technical, and tactical performance

Abstract Aim: This narrative review aimed to explore the effect of mental fatigue on physical, technical, and tactical performance in ball sports. Methods: Three Databases, PUBMED, SCOPUS, and SCIELO, were used to search for a scientific publication. The criterions adopted were: a) published in a peer-reviewed journal; b) adopted at least one manipulation check related to mental fatigue; c) mental fatigue induced by a cognitive task before the outcome task, and d) study participants were ball sports athletes. Result: The quality of this narrative review was rated at 11 (SANRA scale 0-12), and the papers analyzed were published between 2015 and 2022. Twenty-one experimental studies were included in this review. Most studies were in invasion sports (n = 13; 72%), and non-ecological tasks were used to induce mental fatigue (n = 15; 83%). Regarding performance in endurance tests, mentally fatigued athletes had performance impaired. However, when assessed during a small-sided or simulated game, data were inconclusive within the literature. Moreover, athletes presented attenuated perceptual skills (e.g., visual field). Consequently, this worsened motor skills, technical-tactical performances, and tactical behavior. Conclusions: Cognitively demanding tasks should be avoided before training and sports competitions because they can lead the athlete to mental fatigue and impair performance. This impairment is identified in physical performance (endurance tasks) and technical and tactical performance. Finally, it is recommended that athletes do not perform tasks that cause mental fatigue 2 h before the sports event.

Coeficientes de performance preditores da vitória do set no voleibol escolar / Coefficient of performance predictors of set victory in school volleyball

RESUMO O desempenho técnico-tático é fundamental para a vitória no voleibol, deste modo, é importante identificar indicadores associados com a vitória no set. Assim, o objetivo do presente estudo foi identificar e associar os coeficientes de performance técnico-tático em função do resultado do set no voleibol feminino escolar. Participaram do estudo atletas escolares, com idade entre 12 e 14 anos. Foram analisados 27 jogos, resultando em 57 sets, 7194 ações (saque= 2380; recepção de saque= 2157; levantamento= 1358; e ataque= 1299). Posteriormente, foi calculado o coeficiente de performance por ação e set. Utilizou-se de regressão logística binária, para verificar a associação dos coeficientes de performance com a vitória do set. O coeficiente de performance de saque classificado como "bom" mostrou-se como principal preditor de vitória no set (OR = 29,46), seguido por levantamento "bom" (OR= 15,87), e ataque "bom" (OR= 7,32). O saque é o principal preditor de performance no presente estudo, seguido pelo levantamento e ataque. Esses resultados sugerem que o saque deve ser priorizado no treinamento, já que aumenta as chances de vitória no set.

ABSTRACT Technical-tactical performance is essencial to victory in volleyball, so it is important to identify indicators associated with winning the set. Thus, the aim of this study was to identify and associate the technical-tactical coefficient of performance based on the result of the set in the school female volleyball. School athletes participated in the study (age between 12-14 years old). 27 match were analyzed, resulting in 57 sets, 7194 actions (serve= 2380, serve reception= 2157, set= 1358; and attack= 1299). Subsequently, the performance coefficient per action and set was calculated. Binary logistic regression was used to verify the association of the performance coefficients with victory of the set. The serve performance coefficient classified as "good" proved to be a major victory predictor set (OR= 29.46), followed by set classified as "good" (OR= 15.87), and attack classified as "good" (OR= 7.32). The serve is the major predictor in the present study, followed by serve and attack. These results suggest that serve should be prioritized in training, as it increases the chances of victory.

Associação Entre a Técnica Utilizada e o Desempenho Técnico-Tático no Voleibol Escolar Feminino / Association between the Technique Used and the Technical-Tactical Performance in Female School Volleyball

O voleibol é praticado por meio dos fundamentos de saque, recepção de saque, levantamento, ataque, bloqueio e defesa, empregando-se um conjunto de técnicas que podem interferir na qualidade das ações. Deste modo, o objetivo desta pesquisa foi analisar a associação da técnica utilizada nas ações do saque, de recepção de saque, do levantamento e do ataque com a qualidade das ações. Participaram do estudo 11 escolas/equipes, que competiram durante os "Jogos Escolares da Paraíba", com idades entre 12 a 14 anos, sendo todos do sexo feminino. Os jogos foram filmados usando uma câmera para análise posterior. Ao total foram analisados 27 jogos, resultando em 47 sets, nas ações de saque (2.380), recepção de saque (2.157), levantamento (1.358) e ataque (1.299). Para classificar a qualidade das ações foram utilizadas duas escalas, de acordo com a finalidade da ação. O teste do Qui-quadrado foi usado para verificar a associação das técnicas aplicadas em cada fundamento com a qualidade das ações. O saque tipo tênis foi o predominante utilizado no saque (81,2%), a manchete para recepção de saque e levantamento (85% e 65,8%, respectivamente) e corte com e sem salto para ataque (∑= 53,6%). Houve associação entre as técnicas e a qualidade da ação de saque (ꭕ2= 114,612; p< 0,001), recepção de saque (ꭕ2= 70,693; p< 0,001), levantamento (ꭕ2= 205,864; p< 0,001) e ataque (ꭕ2= 241,678; p<0,001). Os resultados deste estudo demostram que a técnica interfere na qualidade das ações. Assim, as principais técnicas foram saque tipo tênis (saque), toque (recepção de saque e levantamento) e corte com salto (ataque). (AU)

Volleyball is played by means of fundamentals serve, serve reception, set, attack, block and defense using a set of techniques that can interfere in the quality of actions. The aim of this research was to analyze the association of the technique used in the actions of the serve, serve reception, set and attack with the quality of actions. Eleven schools / teams competed during the "Paraíba School Games", 12 to 14 years old, female. The games were filmed using a camera for further analysis. In the total 27 games were analyzed, resulting in 47 sets, in the actions of serve (2.380), serve reception (2,157), set (1,358) and attack (1,299). To classify the quality of actions, two scales were used according to the purpose of the action. The Chi-square test was used to verify the association of applied techniques in each foundation with the quality of actions. The standing type was the predominant used in the serve (81.2%), forearm pass for serve reception and set (85% and 65,8%, respectively) and spike with and without jump for attack (Σ = 53.6 %). There was association between the techniques and the quality of the serve action (ꭕ2= 114,612; p< 0,001), serve reception (ꭕ2= 70,693; p< 0,001), set (ꭕ2= 205,864; p< 0,001) and attack (ꭕ2= 241,678; p<0,001). The results of this study demonstrate that the technique interferes in the quality of actions. Thus, the main techniques were standing type (serve), overhand (serve reception and set) and spike with jump (attack).(AU).