Jose Ignacio Priego Quesada

University of Valencia | UV · Department of Physical Education and Sports

It remains unclear whether exercises leading to different outcomes of delayed onset muscle soreness (DOMS) may also elicit different skin temperature responses. The aim of this study was to determine whether different intensities and volumes of a single-joint exercise influence the DOMS and skin temperature measurements differently in healthy adult...

It is unclear whether physiological responses, such as muscle oxygen saturation (SmO2), can be considered symmetrical during cycling. This knowledge has important practical implications for both training and performance assessment. The aim of this study was to determine whether oxygenation profiles in the three active muscles of both legs were symm...

Sports performance initiation is of significant interest in sports sciences, particularly in beach volleyball (BV), where players usually combine indoor and BV disciplines in the formative stages. This research aimed to apply an electronic performance tracking system to quantify the physical-conditional performance of young male BV players during c...

The gastrocnemius muscle plays a crucial role in transmitting and generating energy during standing explosive accelerations, and as a consequence, is a muscle with high injury prevalence, especially the medial gastrocnemius (MG). This study aimed to compare the neuromuscular activation of the lateral gastrocnemius (LG) and MG during one of the most...

La pelota valenciana es un deporte autóctono y tradicional de pelota a mano practicado en todo el territorio valenciano, donde el saque es un aspecto determinante en el rendimiento en muchas de sus modalidades. El objeto de la presente investigación fue analizar la velocidad del saque y su relación con el rendimiento en la modalidad de ‘raspall’ de...

Bicycle set-up dimensions and cycling kinematic data are important components of bicycle fitting and cyclist testing protocols. However, there are no guidelines on how bicycles should be measured and how kinematic data should be collected to increase the reliability of outcomes. This article proposes a consensus regarding bicycle set-up dimensions...

Objective: The association between muscle damage and skin temperature is controversial. We hypothesize that including metrics that are more sensitive to individual responses by considering variability and regions representative of higher temperature could influence skin temperature outcomes. Here, the objective of the study was to determine whethe...

Compared to the determination of exercise thresholds based on systemic changes in blood lactate concentrations or gas exchange data, the determination of breakpoints based on muscle oxygen saturation offers a valid alternative to provide specific information on muscle-derived thresholds. Our study explored the profiles and timing of the second musc...

Dentro de los juegos de pelota a mano encontramos la pelota valenciana, un deporte tradicional valenciano (España). Éste se compone de varias modalidades, pudiéndose destacar la modalidad profesional del raspall. El objetivo del presente estudio fue analizar la estructura temporal y cuantificar los gestos técnicos de 18 pelotaris profesionales masc...

The physical-conditional aspects of the game are a significant research area, focusing on game demands, strength, and kinematic features. This study aimed to synthesise the current state of the art regarding beach volleyball's physical demands. This systematic literature review was conducted in March 2024, following the PRISMA criteria and methodol...

The understanding of metabolic alterations triggered by intense exercise can provide a biological basis for the development of new training and recovery methods. One popular way to monitor these changes...

The First-Person Shooter is a very popular genre in electronic sports (esports), where there are different aiming techniques such as Aim Flicking and Aim Tracking. Although the mouse grip is suggested as one of the most important factors in gaming performance, there is a lack of evidence on this topic. Therefore, the purpose of the present study wa...

The aim of the present study was to evaluate skin temperature (Tsk) asymmetries, using infrared thermography, in professional padel players before (PRE), after (POST) and 10 min after training (POST10), and their relationship with perceptual variables and training characteristics. Thermal images were taken of 10 players before, after and 10 min aft...

Skin temperature responses have been advocated to indicate exercise-induced muscle soreness and recovery status. While the evidence is contradictory, we hypothesize that the presence of muscle damage and the time window of measurement are confounding factors in the skin temperature response. The objective was to determine whether skin temperature i...

Internationalisation in higher education is essential, and although active learning methodologies are increasing and allow students to develop transversal skills, most still have a very local scope. In this context, the Collaborative Online International Learning (COIL) methodology is an interesting approach to benefit the students' development. It...

Technological development has boosted the use of multi-sensor devices to monitor athletes’ performance, but the location and connectivity between devices have been shown to affect data reliability. This preliminary study aimed to determine whether the placement of a multi-sensor device (WIMU PROTM) could affect the heart rate signal reception (GARM...

Threshold determination for improving training and sports performance is important for researchers and trainers, who currently use different methods for determining lactate, ventilatory or muscle oxygenation (SmO2) thresholds. Our study aimed to compare the identification of the intensity at the first and second thresholds using lactate and SmO2 da...

El salto forma parte de muchas acciones de juego en voleibol, por lo que su monitorización es clave para el control de la carga externa. La necesidad de obtener información en el contexto de juego ha llevado al desarrollo de sensores inerciales que automatizan el proceso, pero que requieren de validación y análisis de fiabilidad. Algunas investigac...

La termografía infrarroja (TRI) es un método no invasivo, rápido y objetivo para medir la temperatura de la piel (TP). Esta tecnología ha sido aplicada en diferentes ámbitos de las ciencias del deporte, como la prevención de lesiones, la termo-fisiología (función termorreguladora) o el análisis de la técnica, entre otros. En el vóley playa los juga...

Although in recent years near-infrared spectroscopy has been used in many sports to monitor muscle oxygen saturation (SmO 2 ), there is a lack of knowledge about the sex differences in SmO 2 during exercise in different muscles. Our study aimed to examine SmO 2 differences in muscles between female and male cyclists, during a graded cycling test an...

Over the last few years, portable Near-Infrared Spectroscopy (NIRS) technology has been suggested for determining metabolic/ventilator thresholds. This systematic review and meta-analysis aimed to assess the reliability of a portable muscle oxygenation monitor for determining thresholds during exercise testing. The proposed PICO question was: Is th...

The aim of the present study was to determine whether fatigue affects internal and external load variables determining power profile in cyclists. Ten cyclists performed outdoor power profile tests (lasting 1-, 5 and 20-min) on two consecutive days, subject either to a fatigued condition or not. Fatigue was induced by undertaking an effort (10-min a...

Patellofemoral Pain Syndrome is characterized by the presence of pain in the front area of the knee, which occurs when performing common activities such as climbing stairs, and bending the knees, among others. The objective of this research was to evaluate the detection capability of infrared thermography in patients with Patellofemoral Pain Syndro...

This study aimed to examine the skin temperature (Tsk) variations in five regions of interest (ROI) to assess whether possible disparities between the ROI's Tsk could be associated with specific acute physiological responses during cycling. Seventeen participants performed a pyramidal load protocol on a cycling ergometer. We synchronously measured...

Muscle fatigue can limit performance both in sports and daily life activities. Consecutive days of exercise without a proper recovery time may elicit cumulative fatigue. Although it has been speculated that skin temperature could serve as an indirect indicator of exercise-induced adaptations, it is unclear if skin temperature measured by infrared t...

Aim: To describe the clinical outcomes for a group of complex regional pain syndrome patients using infrared thermography as an intraprocedural support tool when undertaking fluoroscopy-guided lumbar sympathetic blocks. Subjects: 27 patients with lower limb complex regional pain syndrome accompanied by severe pain and persistent functional impai...

Background: Nordic Walking (NW) practice has increased during the last decade, generating great benefits related to the reduction of ground reaction forces (GRF). However, there is still limited evidence regarding how the NW technique could affect GRF. Research question: To analyze the effect of the speed and the differences in ground reaction f...

Purpose: There are no previous studies developing machine learning algorithms in the classification of lumbar sympathetic blocks (LSBs) performance using infrared thermography data. The objective was to assess the performance of different machine learning algorithms to classify LSBs carried out in patients diagnosed with lower limbs Complex Region...

The aim was to analyze the effect of compression tights on skin temperature in women with lipedema and to assess the effect of different knitting on skin temperature. Twenty-four women with lipedema (Grade I = 25%; Grade II = 75%) were divided into three groups according to the compression tights prototype assigned: control (n = 9), Flat (n = 7) an...

This preliminary study aimed to assess skin temperature (Tsk) asymmetries before and after on-court training in elite young tennis players and to find the correlation between these asymmetries and demographic data, racquet characteristics, and pain and fatigue variation. Thermal images of nine tennis players were taken before and after two and a ha...

La saturación de oxígeno muscular (SmO2) medida mediante espectroscopia de infrarrojos cercano (NIRS) se utiliza como indicador de rendimiento muscular, debido a su no invasividad, su aplicación en el estudio de la fatiga muscular puede ser de gran interés junto a técnicas ya consolidadas como la pérdida de salto en contramovimiento (CMJ). El objet...

The response of female cyclists depending on the functional test duration has not been studied. This study aims to analyse the effect of modification of the duration of two different functional tests: Wingate (WAnT) and Functional Power Threshold (FTP) in female cyclists. Fourteen cyclists (27 ±8 years, 1.66 ±0.08 m, and 60.6 ±7.2 kg) performed 2 t...

Small skin temperature asymmetries are claimed to indicate injuries, but the influence of measurement conditions and technical aspects of image acquisition are concerns for determining temperature asymmetries. This research determines whether distance and camera specifications affect thermal asymmetries detection. We simulated thermal asymmetries f...

Valencian handball consists in hitting the ball with the hands and it may contribute to injury development on the hands. This study aimed to analyze skin temperature asymmetries and recovery after a cold stress test (CST) in professional players of Valencian handball before and after a competition. Thirteen professional athletes and a control group...

The use of rubrics in the evaluation of oral presentations has been associated with several benefits for students. However, it is unknown whether students with better academic marks and greater self-regulation find the use of rubrics more useful or not. This paper aims to assess the relationship between how students perceive the use of a rubric and...

Infrared thermography (IRT) has become popular in several areas of knowledge. However, the analyses of thermal images often request manual actions, and little is known about the effect of the evaluator's experience on analysis thermal images. Here, we determine the reproducibility of IRT images analysis performed by evaluators with different levels...

El análisis técnico-táctico se ha convertido en una pieza clave en el rendimiento del voleibol. Por tal motivo, el objetivo de esta revisión sistemática fue profundizar en las últimas tendencias de investigación aplicadas al análisis técnico-táctico del voleibol de alto nivel. Para ello, se llevó a cabo una revisión sistemática de la literatura sig...

Human thermoregulation is the integrative physiological responses of the body used to maintain a core temperature with values close to 37 °C, even in a wide range of activities and environments [...]

Background: Different supports for hydration can influence total body mass and affect running biomechanics. Research question: Do different hydration supports affect the perceived exertion and comfort, stride kinematics, and impact accelerations during running? Methods: This was a crossover study design. Thirteen trail runners completed a treadmi...

En la innovación de los procesos de evaluación, las rúbricas se plantean como una herramienta que favorece la participación del alumnado y estimula el proceso de enseñanza-aprendizaje. El objetivo de este estudio es profundizar en el desarrollo, evaluación y mejora de las rúbricas en las clases de biomecánica deportiva. Tres profesores y 48 alumnos...

La implicación del alumnado en el proceso de evaluación ha aumentado en las Enseñanzas Superiores mediante el uso de rúbricas. Sin embargo, el diseño del instrumento es una tarea compleja y se debe adecuar a cada asignatura para garantizar una adecuada evaluación. El objetivo del estudio ha sido identificar posibles diferencias en los resultados de...

Una de las estrategias que ayuda al estudiante a sintetizar y organizar la información, puesto que fomenta su correcto archivado, es la creación de minivídeos educativos. Los estudiantes del Grado de Ciencias de la Actividad Física y el Deporte (CAFD) transmiten al profesorado la dificultad de asimilar las ideas principales de los temas de la asign...

Running pacing has become a focus of interest over recent years due to its relationship with performance, however, it is still unknown the consistency of each race in different editions. The aim of this study is to analyze the consistency of pacing profile in three consecutive editions of three marathon races. A database of 282,808 runners, compile...

A new method to monitor internal training load from muscle oxygen saturation using near-infrared spectroscopy could be of practical application for research and training purposes. This technology has been validated in different scientific fields, including sport science, and Humon Hex and Moxy are two leading brands. However, its relationship with...

La danza es una disciplina artística que combina la destreza del movimiento corporal con la expresividad de emociones, sentimientos e ideas. Sin embargo, generalmente la expresividad queda en segundo plano tanto en el proceso de enseñanza como en su evaluación. En ese sentido, el objetivo del presente estudio fue diseñar y validar una rúbrica para...

Concepts about motor unit recruitment are important learning contents in exercise physiology and biomechanics classes that are usually taught theoretically. In the last few years, great advances have occurred in the decomposition of surface electromyography, allowing the learning of theoretical contents in an experimental way. In this tutorial pape...

Fatigue can be classified as peripheral or central depending on the extent of its effects. Muscle strength reduction, associated with the appearance of fatigue during running, produces kinetics and kinematics modifications which could lead to an increased risk of injury. This study aimed to analyze the effect of peripheral and central fatigue proto...

Skin temperature assessment has received much attention as a possible measurement of physiological response against stress produced by exercise and research studies usually measure skin temperature 24 or 48 h after exercise. Scientific evidence about skin temperature evolution during the 24-hour period immediately after exercising is, however, scar...

Scoping review. To summarize information on the physiological effects of compression stockings (CS) in individuals with spinal cord injuries (SCI) and suggest areas for future research. We asked, “What are the physiological effects of CS use in individuals with SCI?” Original studies of patients with SCI regardless of sex and age that focused on SC...

The use of minimalist shoes (MS) in running involves changes in running mechanics compared to conventional shoes (CS), but there is still little research analysing the effects of this footwear on plantar pressure, which could help to understand some risk injury factors. Moreover, there are no studies examining the effects of a prolonged running and...

The aim was to determine which performance indicators show significant differences in connection with age category and team’s level in women's international volleyball. The competitions analyzed were Senior Volleyball Nations League (n= 130 games) and U20 (n= 64 games) and U18 (n= 63 games) World Championships held in 2019. The results obtained in...

Background Athletes with spinal cord injury (SCI) have difficulties in maintaining thermal homeostasis during exercise due to their lower sweat capacity and skin vasodilation. Skin temperature assessment, as opposed to core temperature, has become more widely accepted due to its non-invasive nature. The aim of this systematic review was to collate...

Complex Regional Pain Syndrome (CRPS) is a pain disorder that can be triggered by injuries or surgery affecting most often limbs. Its multifaceted pathophysiology makes its diagnosis and treatment a challenging work. To reduce pain, patients diagnosed with CRPS commonly undergo sympathetic blocks which involves the injection of a local anesthetic d...

The objective of this systematic review was to assess the methods to determine bicycle saddle height and the effects of saddle height on cycling performance and injury risk outcomes. The key motivator of this review was to update and expand the finding reported by a previous narrative review published in 2011. The literature search included all doc...

Although dynamic thermography skin temperature assessment has been used in medical field, scientific evidence in sports is scarce. The aim of the study was to assess changes in anterior thigh skin temperature in response to a cold stress test after a strength exercise fatiguing protocol. Ten physically active adults performed a familiarization sess...

Compression and temperature manipulation are discussed as strategies to improve performance markers and recovery in sports. Here, we investigate the effects of compression stockings made with fabric, either combined or not with heating and cooling substances, on variables related to running performance and recovery. Ten trained runners (mean ± stan...

The objective of this preliminary study was to determine the reproducibility of lower limbs skin temperature after cold stress test using the Game Ready system. Skin temperature of fourteen participants was measured before and after cold stress test using the Game Ready system and it was repeated the protocol in four times: at 9:00, at 11:00, at 19...

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...

The use of rubrics can be an especially useful tool to align the teaching, learning and evaluation processes of oral presentation. Its validity is essential to assess academic performance and may be influenced by student self-regulation. The objective of the study was to determine the perception of validity and utility of a rubric for students of t...

Infrared thermography (IRT) has gained popularity in sports medicine for determining whether changes in skin temperature relate to pain and muscle damage. Such a relationship would support IRT as a non-invasive method to monitor these physiological responses. However, the literature remains controversial. Here, we determine the relationship between...

Objective: The temperature of the sole of the foot has been suggested as an alternative to the measurement of plantar pressure during running despite the scarce evidence about their relationship. The temperature of the footwear outsole could also be representative of plantar pressure distribution due to its less multifactorial dependence. The aim...

The Short-Time Fourier transform (STFT) is a helpful tool to identify muscle fatigue with clinical and sports applications. However, the choice of STFT parameters may affect the estimation of myoelectrical manifestations of fatigue. Here we determine the effect of window length and overlap selections on the frequency slope and the coefficient of va...

Power output is considered one of the best tools to control external loads in cycling, but the relationship between a target power output and the physiological responses may suffer from the effects of road gradient, which is also affected by cyclist specialization. The objective of this study was to determine the effects of cyclist specialization o...

The use of custom-made foot orthoses has been associated with numerous benefits, such as decreased impact accelerations. However, it is not known whether this effect could be due to better customisation. The present study analysed the effects of the first generation of a microwavable prefabricated self-customised foot orthosis vs. a prefabricated s...

Amateur runners usually run carrying implements in their hands (keys, a mobile phone, or a bottle of water). However, there is a lack of literature about the effects of different handloads on impact accelerations. Thus, this study aimed to analyse the effects of carrying different objects in the hand on impact accelerations during running. Nineteen...

Lumbar sympathetic blocks (LSBs) are commonly performed to treat pain ailments in the lower limbs. LSBs involve injecting local anesthetic around the nerves. The injection is guided by fluoroscopy which is sometimes considered to be insufficiently accurate. The main aim was to analyze the plantar foot skin temperature data acquired while performing...

Infrared thermography (IRT) has been gaining in popularity in clinical and scientific research due to the increasing availability of affordable infrared cameras. This study aims to determine the similarity of measurement performance between thre