Miguel Angel López Gajardo

Universidad de Extremadura | UNEX · Department of Didactics of Music, Plastic and Body Expression

Low levels of physical activity (PA) are a concern among students, producing negative physical, health and mental consequences. This study aims to present a protocol intervention in physical education (PE) based on self-determination theory (SDT) to enhance students' motivation towards performing PA and increasing their PA levels in their leisure t...

The study aimed to analyze the effects of an intervention program based on team building developed in technical-tactical training tasks in football. Specifically, it examined the benefits of the intervention in variables related to the conceptual model of team building: role clarity, team identification, intra-team communication, cohesion, intra-gr...

A team's ability to respond positively to adversities, problems, and obstacles during their season is an essential part of success in collective sports. Grounded in team resilience theory and using a multilevel analytical approach, this study examined the relationship of the characteristics of resilience and vulnerability under pressure with percei...

Purpose: To quantify the evolution of mental fatigue during an official padel competition. Also, to test the influence of gender on mental fatigue, and the correlation between fatigue, effort perceptions and motivation. Method: Mental load and fatigue, motivation and ratio of perceived exertion of 18 semi-professional padel players (11 males, Mage...

Objetivo. El objetivo del presente estudio era comprobar, según la experiencia, los procesos motivacionales de los entrenadores y la percepción de estilo interpersonal de apoyo hacia las NPB de sus deportistas. Método. Participaron 751 entrenadores de entre 18-67 años (86 mujeres; M = 33.49 ± 10.27), que entrenaban en diferentes deportes colectivos...

This research project, composed of two studies, aimed to analyse various antecedents and outcomes of team resilience. Study 1, which involved 394 sports team players ( M age = 20.41, SD = 5.23), cross-sectionally examined the relationship between group cohesion and collective efficacy with team resilience, and the mediating effect of collective eff...

The main goal of this study was to examine the links between class cohesion and teachers’ relatedness teaching style with students’ relatedness needs, motivation, and positive and negative outcomes in Physical Education. A total of 1294 students 10–18 years old (M = 14.40, SD = 1.99), 613 males (M = 14.48, SD = 1.95) and 681 females (M = 14.33, SD...

(1) Background: The aim of this study is to propose a model of the interactions of group dynamics using the conceptual framework to examine sports teams; (2) Methods: The hypothesized model includes measures of group structure (authentic leadership, perceived justice, coaching competency, role clarity/ambiguity, and role conflict), group cohesion (...

The aim of this study was to develop and validate a psychometrically-sound instrument to assess students’ perceptions about class cohesion. Two studies were conducted. In Study 1, four steps were established: (1) development of the Class Cohesion Questionnaire (CCQ); (2) item selection; (3) item compression; and (4) exploration of psychometric prop...

Background and aims: As children and adolescents' eating patterns have changed over the last few years, researchers have found inconsistencies in the current questionnaires. Therefore, this research aims to (i) update the 2019 KIDMED questionnaire; and (ii) test the psychometric properties of this new questionnaire. Method: A study with 419 childr...

The present article aimed to test a predictive model based on children’s perception of autonomy support exercised by their physical education teachers in establishing a state of high motivational quality, which in turn leads to greater intention and physical activity. Participants were 502 elementary school students aged 9 to 11 years (52.59% males...

El entorno educativo se establece como el contexto donde el alumnado, independientemente de su género, tenga equidad de oportunidades ante la práctica deportiva. El objetivo de este estudio fue analizar el impacto de una unidad didáctica (UD) en Educación Física (EF) de Ultimate Frisbee a través del Modelo de Educación Deportiva (MED) en variables...

El objetivo del presente estudio fue identificar los factores más determinantes en el fútbol profesional que hacen posible una mejora en el rendimiento del equipo al finalizar la temporada. Se realizaron entrevistas semi-estructuradas a 28 jugadores/as profesionales de fútbol (15 hombres y 13 mujeres), con edades comprendidas entre 27-41 años (M =...

This study aimed to determine the association between students' perception of teacher leadership (i.e., transformational, transactional, and passive) and students' psychological needs (i.e., need satisfaction and need frustration) in Mathematics, English as a foreign language, Spanish Language and Literature, and Physical Education. Participants we...

Experts have highlighted the importance of coaches knowing the level of mental fatigue (MF) induced by different tasks. This study aimed to compare the mentally fatiguing nature of cognitive, physical, and combined tasks and, additionally, assess the effect of different moderating variables on MF. Twenty-three physically active (16 males: M age = 2...

This study aimed to analyze whether having more or less time to solve soccer tasks influences physical load and mental fatigue. 48 semi-professional soccer players, from teams in national leagues participated (Mage = 22.4, SDage = 2.25). They carried out 2 sessions with 4 tasks in each session. In one session, there was more time available; in the...

The present study aimed to analyze the influence of the Video Assistant Referee (VAR) on match physical demands in the top Spanish professional football league. Match physical demand data from all the matches for two seasons (2017/2018 and 2018/2019) in the First Spanish Division (n = 1454) were recorded using an optical tracking system (ChyronHego...

The purpose of this study was to adapt and validate the Basic Psychological Needs in Exercise (BPNES) and the Psychological Need Thwarting Scale (PNTS) to merge both measures and create a specific scale for the coaching context. Two studies were conducted. In Study 1, three sports psychologist experts adapted two instruments to analyze the coaches’...

We explored the relationship among intra-group communication, collective efficacy, transactive memory systems and team performance. One hundred and seventy soccer players, aged between 14 and 38 years (M = 18.35, SD = 4.71), from eight national teams participated in this study. Data were analyzed using structural equation modeling. First, our analy...

On the basis of self-determination theory, we aimed to identify students’ perceptions of interpersonal teaching style profiles (i.e. within-teacher combinations of six dimensions of need-supportive and need-thwarting behaviours of autonomy, competence and relatedness) and to examine, through a cross-sectional design, the possible associations betwe...

The study aimed to analyze the relationship between commitment to the team and team resilience factors (characteristics of resilience and vulnerability under pressure), and to examine whether the task and social intra-group conflict act as mediators between commitment to the team and team resilience factors. One hundred seventy (170) male soccer pl...

The present study aimed to analyze the relationship between intra-group conflict and team perceived performance at the end of the season, and to examine the mediating effect of collective efficacy on this relationship. 420 semi-professional and amateur players (M = 22,40; SD = 4,71) of basketball, handball, soccer and volleyball participated. Struc...

Purpose : Based on a multilevel approach (individual and class level), this study aimed to test which need-supportive/thwarting teaching styles were more closely associated with students’ motivation and other positive physical education (PE) out-of-school consequences. Method : Participants were 654 primary ( n = 385) and secondary ( n = 269) PE st...

Introducción/objetivo: El presente estudio tiene como objetivo examinar la relación entre el liderazgo transformacional del entrenador y las características de resiliencia y la vulnerabilidad bajo presión, así como analizar si los factores del conflicto intragrupo (social y tarea) y de la cohesión grupal (social y tarea), pudieran mediar la relació...

We present two studies examining the relationship between athlete leadership quality and team resilience and explored the mediating effect of team identification. In Study 1, 194 soccer players ( M age = 18.50, SD = 4.49) from eight national teams participated. Structural equation modeling showed cross-sectionally that the four types of athlete lea...

Mental load and fatigue are important causes of performance decreases and accidents in different activities. However, a robust systematic review, detailing the instruments used to quantify them, is currently lacking. The purpose of this study was to summarize and classify by derivations the validated instruments used to quantify mental load and fat...

The aim of this study was to determine the interaction between the factors of perceived justice with regard to players’ satisfaction with the coach’s behavior, and also to determine the evolution of these interactions across a season in elite male and female soccer. A longitudinal design was carried out, with three measurement points (i.e., at the...

El objetivo de este estudio ha sido analizar si la modificación de las tareas de entrenamiento, en concreto la orientación del espacio, tiene consecuencias en los diferentes parámetros que identifican la carga de trabajo en el fútbol femenino. En el estudio participaron 18 jugadoras de fútbol femenino (M = 21.89; DT = 6.20), que realizaron dos sesi...

The aim of the present study was to analyze the influence of time winning and time losing on position-specific match physical demands with and without ball possession in the top Spanish professional soccer league. All matches played in the First Spanish soccer league over four consecutive seasons (from 2015/16 to 2018/19) were recorded using an opt...

El fútbol es un mercado universal y creciente que da pie a que numerosos investigadores y empresas innoven para desarrollar invenciones que permitan mejorarla calidad de los entrenamientos y la competición. Por ello, el objetivo del presente trabajo es mostrar el desarrollo y proceso de una invención disruptiva que permite optimizar el entrenamient...

It is currently unknown whether mental fatigue occurs throughout a WPT competition and whether consecutive matches affect how mentally fatiguing a match is perceived to be. The objective was to quantify the effects of successive professional matches on mental fatigue. A total of 14 professional players (9 males, Mage = 25, 5 females, Mage = 21) par...

This study aimed to analyze the association between specific dimension (i.e., fitness, appearance, physical competence, physical strength, and self-esteem) of students’ physical self-concept (PSC) and their physical activity (PA) levels (i.e., intentions to be physically active and out-of-school PA levels perceived by students) and sedentary behavi...

Abstract: Background: The importance of the serve in tennis players’ performance is well known but no previous studies have analyzed the effects of both physical and cognitive fatigue on the speed and accuracy of the serve. This study analyzed the effect of a High-Intensity Interval Training (HIIT) with and without cognitive load on serve speed and...

The aim of the study was to examine the evolution of players' perception of group variables (leadership, motivational climate, cohesion, and collective efficacy) and to determine whether the intercept and growth trajectory differed as a function of whether expectations have or have not been met in a sample of semi-professional Spanish football play...

This study analyzed the influence of the coaches’ encouragement on the mental and physical load in soccer practices. The participants were 36 semiprofessional Spanish soccer players (Mage = 22.40; SD = 2.25) belonging to two male teams and one female team. Following the same practices’ design and order, two training sessions of each team were compl...

The study aimed to analyze the relationship between athletes' perceptions of athlete leadership quality, team identification, inside sacrifice, and performance. A total of 299 players of collective sports (soccer, beach soccer, basketball, volleyball; M age 19.05, SD = 5.10) participated through a cross-sectional design survey. Data were analyzed u...

Motivation seems to enhance athletes’ mental efforts, but this has not been tested yet in padel. The objective was to test the effects of motivation on mental fatigue during padel trainings. Thirty-six elite youth players participated (twenty-two males, Mage = 17.40, SDage = 2.16, and fourteen females, Mage = 17.90, SDage = 3.21). We designed four...

El objetivo del presente estudio fue diseñar y validar un cuestionario para valorar la carga mental en los deportes de equipo. Este cuestionario está formado por cuatro ítems en formato Likert (0-10): exigencia física, cognitiva, emocional y afectiva, y fue diseñado mediante acuerdo entre expertos (n = 10). Un total de 218 jugadores semiprofesional...

El análisis cineantropométrico parece ser una herramienta fiable para cuantificar la evolución del rendimiento físico en el baloncesto profesional. Cada vez son más los equipos femeninos que valoran la composición corporal con intención de conocer los efectos y las mejoras producidas en las jugadoras como consecuencia de los entrenamientos y la com...

El análisis cineantropométrico parece ser una herramienta fiable para cuantificar la evolución del rendimiento en el baloncesto profesional. Cada vez son más los equipos femeninos que valoran la composición corporal con intención de conocer los efectos y las mejoras producidas en las jugadoras consecuencia de los entrenamientos y la competición. En...

Desde la teoría del liderazgo transformacional, este estudio tenía como objetivo analizar las propiedades psicométricas de una versión adaptada al ámbito educativo del Multifactor Leadership Questionnaire (MLQ-5X). Un total de 1551 estudiantes españoles (M = 15,47 años ± 0,72; 679 chicos y 872 chicas) de 31 centros de enseñanza secundaria participa...

This study aimed to analyze the effects of rules limitations in pass decisions during soccer tasks on physical and mental load reported by players. Participants were 40 semiprofessional Spanish soccer players (Mage = 22.40, SD = 2.25) from two male teams. Two training sessions with four tasks (same tasks with different score system: two maintaining...

Role commitment, defined as “a dynamic and volitional psychological bond reflected in the dedication to and responsibility for one’s role” (Eys et al., 2020, p. 91), is suggested to be a critical perception contributing to sport group functioning (Carron & Eys, 2012). As such, understanding what facilitates athletes’ commitment to their role respon...

The purpose of the present study was to examine how coaches’ satisfaction with the team could be related to their reported interpersonal style towards young athletes, and to analyze the mediating role of basic psychological needs (i.e. need satisfaction and need frustration) in this relationship. Participants were 352 coaches (16–67 years old; M ag...

El objetivo de la presente investigación era traducir al español y validar la Escala de Comunicación Efectiva en Deportes de Equipo (SECTS-2S). Para ello, se realizaron dos estudios. El Estudio 1 contó con 276 jugadores de fútbol de género masculino (88.40 %) y femenino (11.60 %) con un rango de edad de 16-42 años (M = 18.42; DT = 2.71). Los result...

El objetivo del presente estudio fue analizar las diferencias en el número y tipo de acciones técnico-tácticas de los porteros en competición en función de la división y de si juegan como local o visitante. Para ello, se han analizado 80 partidos con un total de 160 porteros de 1ª, 2ª, 2ªB y 3ª división española. Los resultados mostraron que no exi...

Introduction: in Spain, one third of the young population ranging from 7 to 14 years of age are overweight or obese. Health-related behaviors such as a high level of physical activity, low screen time, and good eating habits can prevent overweight and obesity in young people. Objectives: to assess adherence to the Mediterranean diet and quality...

Background Although several studies that rely on self-determination theory have shown the positive interrelations among perceived need supportive learning environment, needs satisfaction, quality of motivation, and desired outcomes in the context of physical education, only few studies have tested so far the full sequence of relations within a sing...

El objetivo de este estudio ha sido analizar si la modificación de las tareas de entrenamiento, en concreto la orientación del espacio, tiene consecuencias en los diferentes parámetros que identifican la carga de trabajo en el fútbol femenino. En el estudio participaron 18 jugadoras de fútbol femenino (M = 21.89; DT = 6.20), que realizaron dos sesi...

Objectives The purpose of the study was to assess the effect of a coaching intervention on soccer athletes’ perceptions of the coaches’ competencies, enjoyment, satisfaction, and intention to persist in the sport. Equipment and methods: The sample consisted of 117 young male soccer players and eight of their coaches who were divided into two groups...

Prevalence of overweight and obesity is an important health problem worldwide. It was shown that physical activity and sedentary behaviour are associated with prevalence of overweight and obesity in youth individuals. However, few children and adolescents meet the World Health Organization recommendations about physical activity levels. The need to...

Amateur football is played by millions of individuals worldwide, but it has been scarcely researched (almost no studies have targeted this sport). There seems to be a need to fill this gap, because it has an impact in these individuals' health status. The aim of our research was to uncover amateur football players' physical and psychological traits...

The aim was to analyze the extent to which anthropometric values, in line with body image and physical ability, predict physical self-concept, and the latter, in turn, predicts the practice and intention to pursue physical activity. A total of 302 participants, 150 males and 152 females were recruited from different primary schools in Extremadura (...

Socialization tactics for integrating newcomers into sport teams can be key to the evolution of relationships within the group and can lead to positive or negative consequences throughout the season. For this reason, across two studies with distinct contexts, we sought to unpack the mechanisms through which socialization tactics are related to grou...

Se sabe que la práctica de la actividad física es beneficiosa para mejorar la calidad de vida en la formación ya que mejora notablemente el rendimiento académico de los alumnos. Además, esta mejora viene precedida también por la práctica de la actividad física en el seno familiar. Por lo tanto, el objetivo del presente estudio es conocer las difere...