Daniel Rojas-Valverde

Daniel Rojas-Valverde
National University of Costa Rica | UNA · Escuela de Ciencias del Movimiento Humano y Calidad de Vida

PE; PT; PhD

About

172
Publications
36,634
Reads
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943
Citations
Introduction
Lecturer: Escuela Ciencias del Movimiento Humano y Calidad de Vida (CIEMHCAVI) Associate Researcher: Centro de Investigación y Diagnóstico en Salud y Deporte (CIDISAD) Associate Researcher: Núcleo de Estudios para el Alto Rendimiento y Salud (NARS) Evaluación y Seguimiento Interno de la Calidad (ESICA) Head: Sport Injury Clinic (Rehab&Readapt) Universidad Nacional Heredia, Costa Rica Ph: +(50688250219) drojasv@hotmail.com / drojasv@una.cr
Additional affiliations
July 2015 - present
National University of Costa Rica
Position
  • Professor (Associate)
Description
  • Anatomy of Human Movement Cathedra Physical and Sport Contemporary Activities
January 2015 - April 2020
National University of Costa Rica
Position
  • Lecturer
January 2013 - present
National University of Costa Rica
Position
  • Research Associate
Education
October 2019 - October 2022
Universidad de Extremadura
Field of study
  • Sport Science
February 2013 - November 2015
National University of Costa Rica
Field of study
  • Health and Human Movement
February 2008 - May 2015
Universidad Santa Paula
Field of study
  • Physical Therapy

Publications

Publications (172)
Article
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Background: Recovery between efforts is critical to achieving optimal physical and sports performance. In this sense, many nutritional supplements that have been proven to improve recovery and physical and physiological performance are widely used. Supplements such as nitrates (NO3−), including organic foods such as beets, promote muscle recovery a...
Article
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Purpose: To explore the evidence published so far regarding the understanding of sleep disorders, their physiology and monitoring in first responder bodies. Metodología: Articles were found mainly through three online databases (Pubmed, MEDLINE, Google Scholar) with search terms comprising in English language ¨sleep¨ AND ¨police¨ OR ¨Emergency¨ OR...
Book
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Costa Rica es un país reconocido por dos características: la calidez del pura vida de su pueblo y el esplendor de la belleza de su tierra. Quizás, esta es la explicación más certera del porqué de su nombre. Costa Rica, con 51.100 km2, es un país que posee entre el 4 y el 5% de la biodiversidad del planeta, esto, gracias a que cuenta con dos costas,...
Article
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Five-a-side football for blind people is the only adapted football modality present at the Paralympic games. Fa5 is a collaborative-opposition sport in which its participants play with no vision, which causes numerous impacts. At the London 2012 Paralympic Games, it was the sport with the highest incidence of sports injuries. The main objective of...
Article
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The purpose of this study was to describe an anthropometric, aerobic and muscle power profile of young Costa Rican basketball players according to sex, play positions and age. The assessment was carried outa on 99 young players (43 women and 56 men; 18 guards, 51 forwards and 30 centers; 42 in the U16 category and 57 in the U18 category) from eight...
Article
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En esta sección se publican los resúmenes en español de artículos que han sido publicados por investigadoras/es de universidades costarricenses en otras revistas en el mundo, con su debida referencia al trabajo original, y con una breve explicación de dónde se realizó la investigación. Los artículos originales han sido publicados en otros idiomas;...
Article
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96 Percepción de estudiantes universitarios acerca de la presencialidad en el aula y presencialidad remota durante la pandemia del COVID-19 Perception of university students about classroom presence and remote presence during the COVID-19 pandemic
Article
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The quantification of training load has become mandatory for coaches and team staff. Within the analyzed variables, distance covered at different speed zones is one of the most studied. However, there is no consensus in the definition of speed zones in the published articles about each team sport, so it makes difficult a comparison between them. Th...
Article
As reported in the medical literature, lateral asymmetries (LA) in sports may lead to overload injuries and reduction in performance. Even a lateral asymmetry of ten percent can lead to structural and functional conditions which may precipitate sub-optimal performance or increase the risk of overload injuries. The aim of this study was to explore...
Article
Internal load is defined as a combination of biochemical and biomechanical stress on an athlete's system. Understanding the manner which blood biomarkers as internal load variables could impact external load indicators of physical performance can improve how coaches plan and prescribe physical loads in soccer. This research aimed to analyze the rel...
Article
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The purpose of this study was to explore the potential relationship between ACTN-3 and ACE gene expression over the change in muscle mechanical and functional properties in youth handballers through a congested tournament. 30 players of the first handball division of Costa Rica participated in this study. The participants played a national tourname...
Article
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Este estudio cumple como propósito obtener la percepción del estudiantado de grado y posgrado de las carreras en ciencias del movimiento humano, acerca de la enseñanza, aprendizaje y la evaluación durante la pandemia COVID-19 relacionada con el virus SARS-CoV-2. En este estudio participan de manera voluntaria un total de 23 estudiantes (12 grado y...
Article
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RESUMEN Rojas-Valverde, D. (2022). Rol crítico del trabajo final de graduación en el proceso de formación investigativa del estudiantado de ciencias del movimiento humano. PENSAR EN MOVIMIENTO: Revista de Ciencias del Ejercicio y la Salud, 20(1), 1-9. Las prácticas científicas son un pilar en la formación de los profesionales de las Ciencias del Mo...
Article
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The aim of this study was to evaluate heat exposure, dehydration, and kidney function in rice workers over the course of three months, in Guanacaste, Costa Rica. We collected biological and questionnaire data across a three-month-period in male field (n = 27) and other (n = 45) workers from a rice company where chronic kidney disease of unknown ori...
Article
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It is well established that physical activity reduces all-cause mortality and can prolong life. Ultra-endurance running (UER) is an extreme sport that is becoming increasingly popular, and comprises running races above marathon distance, exceeding 6-hours, and/or running fixed distances on multiple days. Serious acute adverse events are rare but th...
Article
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This study aimed to identify the most important variables of male and female beach handball workload demands and compare them by sex. A total of 92 elite Brazilian beach handball players (54 male: age 22.1 ± 2.6 years, height 1.8 ± 0.5 m, weight 77.6 ± 13.4 kg; and 38 female: age 24.4 ± 5.5 years, height 1.7 ± 0.5 m, weight 67.5 ± 6.5 kg) were anal...
Article
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The purpose of this case study was to present the effectiveness of physiotherapeutic treatment based on manual orthopedic techniques in an amateur athlete with costochondritis due to physical strenuous exercise. A 31 years old experienced, well-trained, endurance amateur athlete presented chest pain suggesting costochondritis after physical and kin...
Article
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This study aimed to compare physical and physiological demands in youth basketball players according to gender, playing positions, and match outcomes. 64 players (32 female and 32 male) from eight youth sub-elite basketball teams were monitored using an Ultra-Wide Band system and inertial measurement unit in three consecutive matches. The results s...
Article
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Dear Editor, We really appreciate the Letter to the Editor by Jouffroy and colleagues [1], which added valuable information and discussion to our narrative review titled “Potential Long- Term Health Problems Associated with Ultra-Endurance Running” [2]. One of the primary aims of the paper was to “stimulate more open debate about the potential impl...
Article
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This study aimed to compare physical and physiological demands in youth basketball players according to gender, playing positions, and match outcomes. 64 players (32 female and 32 male) from eight youth sub-elite basketball teams were monitored using an Ultra-Wide Band system and inertial measurement unit in three consecutive matches. The results s...
Article
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There is currently an increase in inertial flywheel application in strength training; thus, it must be monitored by an accurate and reliable device. The present study tested: (1) the accuracy of an inertial measurement device (IMU) to correctly measure angular velocity and (2) its inter-unit reliability for the measurement of external load. The ana...
Article
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Background: Consistent evidence suggests that exercise improves cognition and decision making, with preliminary evidence suggesting that brain-derived neurotrophic factors (BDNFs) may me-diate these effects on high-intensity interval activities such as in football playing. We conducted a systematic review of studies on football players or football...
Article
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Dado el contexto actual de pandemia COVID-19 y la realización de teletrabajo, se estableció como objetivo explorar la efectividad de un programa educativo sobre los hábitos de vida de las personas colaboradoras del área de Recursos Humanos (RH) del Ministerio de Educación Pública (MEP) con miras a la implementación de prácticas que lograran un mayo...
Article
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Background: Body temperature is often assessed in the core and the skin. Infrared thermography has been used to measure skin temperature (Tsk) in sport research and clinical practice. This study aimed to explore the information reported to date on the use of infrared thermography to detect short-term Tsk responses to endurance exercise and to ident...
Research Proposal
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Dear Colleagues, Sports injuries occur during exercise or while participating in a sport. Exercise represents physical, physiological, and psychological stress that could result in injury. Treating exercise-related injuries is a complex and a multi-layered challenge. Currently, the inter and multidisciplinary medical team faces great challenges in...
Article
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Background: Scoring first seems to be a determinant in professional football playing; several factors could influence the development of the match and the outcome. This study aimed to identify which factors could influence scoring first and impact match outcomes in professional European female football. Methods: There were 504 official matches h...
Research Proposal
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Recent advances in the sport technology of wearable tracking devices now allow coaches, trainers, and players to explore new variables and access data that contributes to the design of specific and individual tasks, and prepare athletes and/or teams in coherent ways based on competition demands. In this sense, microtechnology obtains information ab...
Article
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The present study aimed to select the most critical external workload variables that explain sports performance in the Mexican male professional soccer League (Liga BBVA-Bancomer) and analyse the effect of match period and match outcome in workload demands. 480 professional soccer players that belonged to 16 Liga BBVA-Bancomerteams were registered...
Article
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Repeated sprint in hypoxia (RSH) is used to improve supramaximal cycling capacity, but little is known about the potential differences between different systems for creating normobaric hypoxia, such as a chamber, tent, or mask. This study aimed to compare the environmental (carbon dioxide (CO2) and wet-globe bulb temperature (WGBT)), perceptual (pa...
Article
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Background: This study aimed to globally assess heat strain, dehydration, and mechanical load as acute kidney injury (AKI) indicators in amateur endurance trail athletes during a 35.3 km run. Methods: Thirty amateur experienced trail runners completed an endurance trail run (total positive ascend 1815 m). The following assessments were performed...
Thesis
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Introduction: The popularity of trail running and endurance sports has increased substantially in the last two decades. Research around trail running has focused mainly on acute injuries and medical problems considering physiological, biochemical, nutritional, aspects, and external loads. More recently, researchers have been concerned with investig...
Article
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Background: This study aimed to globally assess heat strain, dehydration, and mechanical load as acute kidney injury (AKI) indicators in amateur endurance trail athletes during a 35.3 km run. Methods: Thirty amateur experienced trail runners completed an endurance trail run (total positive ascend 1815 m). The following assessments were performed in...
Article
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The purpose of the present study was to analyze the chronotropic and cardiac autonomic response of a motorcyclist during the 7th race week of the FIM-CEV Repsol Moto2 European Championship through heart rate (HRAVG) and sympathetic-parasympathetic ratio (RS-Ps). The effect and relationships of sessions, laps and track segments were analyzed by MANO...
Article
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The use of therapeutic ultrasound (TUS) in sports science, medicine and rehabilitation has increased significantly in the last decade. This growth has been accompanied by a great scientific interest for the study of responses during injury treatment and the finding of optimal dosage. Therefore, the purpose of this narrative review was to explore th...
Book
The use of technology within sport is well established, most professional sport teams engage with the use of Electronic Performance and Tracking Systems. This book is the first to offer a dep and structured examination of these technologies and how they are used in a team sport setting. The Use of Applied Technology in Team Sport describes and ass...
Chapter
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With the creation of new technology, a series of hardware and software have been developed that allow the capture, processing, and analysis, in some cases in real- time, of a large amount of information in different settings. the collected data can be up to a thousand data per second in an amount of up to 100-–1000 variables that are usually captur...
Article
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El uso de la ecografía terapéutica (TUS) en la ciencia del deporte, la medicina y la rehabilitación ha aumentado significativamente en la última década. Este crecimiento ha estado acompañado de un gran interés científico por el estudio de las respuestas durante el tratamiento de lesiones y el hallazgo de la dosis óptima. Por lo tanto, el propósito...
Article
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This study aimed to assess the effect of a marathon running at a hot environmental temperature on the baseline skin temperature (Tsk) of the posterior day and to analyze the relationship between Tsk response and muscle damage markers variation. The Tsk, creatine kinase, and lactate dehydrogenase of 16 marathon runners were assessed four times befor...
Article
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The use of cannabidiol (CBD) among athletes is becoming extensive and frequent. This could be due to its elimination of CBD from the list of prohibited substances by federations and international institutions of sport. Also, CBD legalization, and production and commercialization allowance could rise it intake. This situation, despite the fact that...
Article
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The purpose of this study was to analyze the external and internal load of Costa Rican handball referees according to sex and game periods. Nine referees (6 men and 3 women) were monitored during U19 handball matches, using an ultra-wide band local positioning system (UWB) and WIMUPro™ inertial units (IMU). The results showed a total distance of 45...
Article
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Monitoring physical demands during soccer matches with GPS technologies provides valuable information that can be used to enhance sports performance. Terefore, this study aimed to know Costa Rican professional soccer players' physical demands and analyze the influence of the playing position and the competitive level during matches. Sixty male socc...
Article
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Although resistance exercise has a series of known health benefits, prolonged efforts entail a series of commonly acute events that could be linked to major long term issues. The fact that these acute events cause future long-term complications is poorly understood and requires further investigation and analysis. Despite the fact that chronic healt...
Article
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Cold water immersion (CWI) is a recovery method in sports, acting through a reduction in body temperature and improvement of muscular function by limiting post-exercise inflammation processes. Purpose: To analyze the effectiveness of intermittent and continuous cold-water immersion (CWI) on skin temperature recovery throughout the days after the st...
Research Proposal
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The application of technology is designed to improve something, and to optimize and facilitate human work. Currently, new technologies are an essential piece in most professional sports; from those aimed at improving the performance of the athlete, to those designed to verify the result of the competition objectively. Technology is so established i...
Article
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PurposeThe aim of this study was to compare the energy contributions and workloads in men and women during badminton matches versus frequently used multi-ball smash practices.Methods Fourteen badminton players performed one badminton singles game and one session of smashing practice on separate days. The energy contributions were examined in terms...
Chapter
Heart rate is one of the most important and most studied variables in sports and exercise science. Over the years, hardware and software have been developed that allow its validation in a valid and reliable way. Currently, due to this information technology development, there are devices such as skin patches, electrodes, chest bands, oximeters, wri...
Article
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Considering the complexity of the physiological pathways of the processes underlying proprioceptive sensing and the integrated functions with other exteroceptive senses in real settings, the existing assessment tests explore only isolated features and lack practical significance. Rather than evaluations that consider isolated segmental movements, s...
Article
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Aims and Scope: The purpose of this study was to compare external and internal workload according to sex and match periods in youth basketball players during a congested-fixture tournament using an exploratory factor analysis method as a data reduction technique through Principal Component Analysis (PCA). Methods: Sixty-four youth basketball player...
Article
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The aim of this study was to assess the principal components (PC) of women’s field hockey players´ TL distinguishing by playing positions (i.e., back, midfielder, forward). Data were collected from sixteen players belonging to the Spanish National women’s field hockey team during 13 official matches from the European Championship, World Series, and...
Article
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En respuesta a la pandemia relacionada con COVID-19, el mundo ha sufrido una serie de cambios drásticos. Debido a ellos, se han anunciado aplazamientos y cancelaciones de múltiples grandes eventos anuales en los deportes, las cuales dan paso a nuevas alternativas digitales que responden a las disposiciones de aislamiento del gobierno. Los eSports s...
Article
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(1) Background: Data mining has turned essential when exploring a large amount of information in performance analysis in sports. This study aimed to select the most relevant variables influencing the external and internal load in top-elite 5-a-side soccer (Sa5) using a data mining model considering some contextual indicators as match result, body m...
Article
Rico-González, M, Pino-Ortega, J, Rojas-Valverde, D, and Los Arcos, A. Comparing sampling frequencies to measure collective tactical variables during soccer training. J Strength Cond Res XX(X): 000–000, 2021—The sampling frequency of microsensors that measure the position of the players in team sports is a variable that could affect the accuracy of...
Article
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This study aimed to describe in-season worst-case scenarios (WCS) of professional soccer players and compare the WCS between training and match days (MD), considering the length of microcycle. A cohort study was designed for four competitive mesocycles in LaLiga123. The WCS of distance covered (DIS), high-speed running distance (HSRD), and sprintin...
Article
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Since the accelerating development of technology applied to team sports and its subsequent high amount of information available, the need for data mining leads to the use of data reduction techniques such as Principal Component Analysis (PCA). This systematic review aims to identify determinant variables in soccer, basketball and rugby using explor...
Article
The extensive use of wearable sensors in sport medicine, exercise medicine, and health has increased the interest in their study. That is why it is necessary to test these technologies’ efficiency, effectiveness, agreement, and reliability in different settings. Consequently, the purpose of this article was to analyze the magnetic, angular rate, an...
Article
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Indoor cycling has been a trend during the COVID-19 pandemic due to the lockdowns and social distancing measures imposed by most countries. Virtual cycling (eCycling) has grown exponentially, and its popularity among amateur and professional cyclists is shown by the fact that they regularly participate in virtual competitions in which people from a...
Article
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Psychosis in epilepsy is a syndrome associated with paroxysmal electrical brain activity according to its temporal appearance. When psychotic symptoms appear paradoxically after the disappearance or compensation of epileptogenic activity is known as: forced normalization phenomenon (FNF), this condition is rare and makes its identification, treatme...
Article
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La psicosis en la epilepsia es un síndrome asociado a una actividad eléctrica cerebral paroxística según su aparición temporal. Cuando los síntomas psicóticos aparecen de forma paradójica después de la desaparición o compensación de la actividad epileptogénica se conoce como: fenómeno de normalización forzada (FNF), esta condición es poco común y d...
Article
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La pandemia mundial producto del coronavirus que causa la enfermedad (COVID-19) ha ocasionado un gran impacto a nivel mundial y en los programas de rehabilitación cardíaca tradicional (RCT). En la actualidad, se debe promover que los pacientes con enfermedades cardiovasculares (ECV) se mantengan haciendo ejercicio físico a pesar de la pandemia. Obj...
Article
Background: Local positioning systems have shown high accuracy for measuring the distance covered and the mean velocities and also for time-motion analysis. However, no study has assessed the accuracy and inter-unit agreement of local positioning system [LPS] technology to compute any collective tactical behavior variable. Objective: The main aim...
Article
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Background: Previous studies have analysed the effect of wearing high-heeled shoes (HHS) on gait analysis, balance and its relation to health. However, further research is needed to study its effect on the difference of chain reactions in the transfer of body impacts from the lower to the upper limbs. Objectives: The aims of the present research...
Article
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Although many studies on collective tactical behavior have been published in the last decade, no study has revised and summarized the findings provided by futsal. The main aim of this systematic review was to identify and discuss the geometrical center (GC), distance and area tactical variables used to assess team behavior in futsal. In addition, i...
Article
Principal Component Analysis (PCA) has not been used to assess the principal component (PC) of players´ external training loads (TL) in futsal. In addition, no previous study has analyzed the PC of players´ external TL depending on the half of the match in futsal. Thus, this study aimed to assess the PC of players´ external TL considering an entire...