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Analysis of the Effect of Injuries on Match Performance Variables in Professional Soccer Players: A Retrospective, Experimental Longitudinal Design
(Springer Nature, 2022) Raya González, Javier; Pulido González, Juan José; Beato, Marco; Ponce Bordón, José Carlos; López del Campo, Roberto; Resta Serra, Ricardo; García Calvo, Tomás; Universidad Isabel I de Castilla. Burgos
; Universidad de Extremadura. Departamento de Didáctica de la Expresión Musical, Plástica y Corporal; University of Suffolk. UK
Background:
Knowing the impact of injuries is essential for their adequate management during reconditioning programs.
Objective:
This study aimed to analyze the changes in match performance parameters in professional soccer players after sustaining an injury, which was defined according to injury severity.
Methods:
Two-hundred and seven injuries related to one hundred and sixty-one professional soccer players from the Spanish LaLiga™ were considered for this study. All the injuries were classified according to their severity as minor (from 4 to 7 missed days), moderate (from 8 to 28 missed days), and major (more than 28 missed days). Through Mediacoach® videotracking system, time and external demand variables were collected and subsequently compared between pre-injury and return to play periods. The analyzed variables were (in m min−1): relative distance covered (RD; total distance covered·min−1), distance covered walking (0–6 km h−1), distance covered jogging (6–12 km h−1), distance covered running (12–18 km h−1), distance covered at intense running (18–21 km h−1), distance covered at high-speed running (21–24 km h−1), and sprinting (> 24 km h−1) distance covered.
Results:
Significant reductions in playing time after suffering moderate and major injuries were observed. Significant reductions after minor injuries were observed in jogging (> 6 km h−1) and running (6–12 km h−1), while significantly greater distances at intense running (18–21 km h−1) and high-speed running (21–24 km h−1) were covered by players who suffer major injuries. Finally, relevant decreases in the maximum speed achieved after moderate and major injuries were found.
Conclusions:
In conclusion, this study shows the importance of high loads during reconditioning programs, as well as implementing strategies that allow reaching levels of maximum speed values after the return to play.
Does coaches’ satisfaction with the team determine their interpersonal style? The mediating role of basic psychological needs
(Wiley, 2022) Pulido González, Juan José; López Gajardo, Miguel Ángel; Ponce Bordón, José Carlos; Vaquero Solís, Miguel; Leo Marcos, Francisco Miguel; Universidade de Lisboa. Portugal; Universidad de Extremadura. Departamento de Didáctica de la Expresión Musical, Plástica y Corporal
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 age = 32.88, SD = 11.14) from 48 clubs, who had between 1 and 52 years of training experience (M = 23.23, SD = 15.02). Structural equation modelling (SEM) was employed to test the relationships between variables. Results showed that satisfaction with the team is positively related to coaches’ need satisfaction, and negatively to their need frustration. Need satisfaction positively predicted coaches’ need-supportive style, and need frustration predicted their need-thwarting style. Regarding indirect effects, need satisfaction positively mediated the relationship between coaches’ satisfaction with the team and their need-supportive style, and need frustration negatively mediated the relationship between coaches’ satisfaction with the team and their need-thwarting style. These findings are a first step to highlight satisfaction with the team as an antecedent of coaches’ self-reported need-supportive and need-thwarting behaviours towards athletes, and the mediating role of coaches’ psychological needs (need satisfaction and need frustration) in this relationship.
Social responsibility attitudes and behaviors’ influence on university students’ satisfaction
(MDPI, 2020) Gallardo Vázquez, Dolores; Folgado Fernández, José Antonio; Hipólito Ojalvo, Francisco de Asís; Valdez Juárez, Luis Enrique; Universidad de Extremadura. Departamento de Ingeniería Mecánica, Energética y de los Materiales; Universidad de Extremadura. Departamento de Economía Financiera y Contabilidad; Instituto Tecnológico de Sonora. México
This study focused on university social responsibility (USR). Corporate social responsibility is currently an extremely common strategy implemented by organizations. Higher education institutions are also introducing this strategy to enhance their performance, seeking to ensure that every university action is socially responsible and oriented toward achieving advantages over competitors. This competitive advantage is the result of a social responsibility vision, which has an ethical core, that the University has implemented or is implementing among all its stakeholders. These institutions work in four areas: instruction, research, management, and projection to society. Universities must thus strive to meet the interests of different stakeholders’ interests. This research concentrated on university students as an important stakeholder. The main objective was to evaluate university students’ participation in USR activities, as well as assessing the impact of relevant university practices. In addition, the study sought to measure the existing causal relationship between students’ participation and their university’s practices in terms of student satisfaction. The fieldwork was conducted with an electronic survey distributed to a group of University of Extremadura students in Spain. A total of 362 valid questionnaires were collected, which were processed using structural equation modeling and partial least squares. The results have implications for university management in the area of social responsibility, with regard to the new USR trends are revealed. In terms of originality and value, this research emphasized a specific stakeholder in universities, namely students, and ways their satisfaction can be achieved through USR.
Is coaches’ perceived team performance associated with their intentions to persist in coaching? The mediating role of coaches’ psychological needs and motivation
(Taylor & Francis, 2023) Pulido González, Juan José; Puyenbroack, Stef van; López Gajardo, Miguel Ángel; Vande Broek, Gert; Leo Marcos, Francisco Miguel; Universidad de Extremadura. Departamento de Didáctica de la Expresión Musical, Plástica y Corporal; Katholieke Universitet Leuven. Belgium
This study examined the association between team performance perceived by coaches, coaches’ basic psychological needs, motivation, and their intentions to persist in coaching. Participants were 719 coaches (80 females, M = 33.49 years, SD = 10.27, range = 18–67) of different team sports (soccer = 514; basketball = 165; volleyball = 23; handball = 14; and hockey = 3) who completed questionnaire measures at the end of the season. Structural equation modelling adjusted for sex, coaches’ experience, age categories, and type of sport revealed that coaches’ perceptions of team performance were positively related to their need satisfaction and negatively to their need frustration. In turn, coaches’ need satisfaction was positively associated with their autonomous motivation, whereas their need frustration was positively related to controlled motivation and amotivation. Finally, coaches’ autonomous motivation was a positive predictor of their intentions to persist, and conversely, coaches’ amotivation was a negative predictor of their intentions to persist. We found a significant positive and indirect effect between team performance perceived by coaches and their intention to persist through their need satisfaction and autonomous motivation. These findings represent the first quantitative insight into how coach-perceived team performance could function as a new antecedent relevant to coaches’ motivational processes and persistence.
Analysis of the progressive collapse of a parking garage concrete structure due to punching shear
(Elsevier, 2025) Pérez Díaz, José Antonio; Ríos Jiménez, José David; Sánchez González, Ana Estíbaliz; Ponce Torres, Alberto; Universidad de Extremadura. Departamento de Ingeniería Mecánica, Energética y de los Materiales; Universidad de Sevilla
This work aims to clarify the causes leading to the structural collapse of the garage of a residential development located in Santander, Spain, in 2020. Visual inspections of the collapsed area were carried out to establish the first hypotheses about the collapse. Subsequently, the materials, geometry and acting loads were studied to compare them with the original project. The main conclusion was that the slab was subjected, in the area where the collapse began, to gravity loads of 34 kN/m2 when it was designed to support 15 kN/m2. Then, structural verifications were performed in accordance with EHE-08 and Eurocode 2, in force during project design, to identify the failure mechanism(s) that caused the progressive collapse of the structure. Unacceptable safety factors were observed for punching shear, which was the main failure mechanism. Punching was aggravated by cavities detected in the concrete, which caused both a decrease in the slab strength (lower effective depth of the slab) and an increase in the stresses in the compression struts of about 20 % to 30 %, which considerably reduced the punching safety levels. This calculation was carried out by means of a finite element analysis with SAP2000. The assessment of this type of defect, very common during the execution phase, is not well developed either from a theoretical or regulatory point of view. This paper proposes, as a corrective measure, the inclusion both in the European and National Standards of a mandatory inspection procedure based on Ground Penetration Radar or ultrasounds, during the execution phase, to detect and correct this type of defect, not detectable by visual inspection. Finally, a bending and cracking analysis were also conducted, giving values of the corresponding safety factors of less than unity. Therefore, they also contributed to both the progressive loss of strength of the slabs and the final punching failure. These last two causes are also crucial to understand why the collapse occurred 15 years after its commissioning.