Irene Jimenez-Perez

University of Valencia | UV · Department of Physiology

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...

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...

In cycling, a wide range of ergogenic foods with a variety of flavours, shapes, and textures are available. The timing of their consumption and their correct oral processing can influence the performance of athletes. Furthermore, the differences in the texture of energy bars could result in differences in the chewing required. Nonetheless, research...

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...

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...

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...

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...

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...

The individualization of a custom-made foot orthosis could provide improvements in plantar loading distribution regarding a prefabricated one. However, not all runners can afford it because of its high cost. A new type of low-cost prefabricated foot orthoses with self-customization could be the solution. The aim of the study was to evaluate if self...

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...

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 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...

During the transition between warm-up and competition there is a change in core, muscle and (eventually) skin temperature that may affect swimming performance. We have aimed to assess skin temperature evolution during transition phases of different durations before a typical front crawl effort and to investigate its relationship with performance. F...

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 three models of IRT camera during assessment of skin temperature before and after physical exercise. Three mo...

The aim of the study was to evaluate an automatic thermographic software package (ThermoHuman®) for assessing skin temperature on the soles of the feet before and after running and to compare it with two manual definitions of the ROIs. 120 thermal images of the soles of the feet of 30 participants, at two measurement points (before and after runnin...

There is a lack of evidence about the effect of different type of foot orthoses on plantar surface temperature. Moreover, that effect could be different depending on gender due to anatomical and physiological differences between men and women. The aim of the study was to analyze the effect of a thermoformable prefabricated foot orthosis on plantar...

The aim of this technical report is to present a preliminary study carried out to define the methodology to be employed for further research on assessing the effect of sweating on infrared thermography and thermal contact sensors after moderate intensity running. Nine recreational runners participated in this preliminary study. Participants ran for...

Foot orthoses are one of the most used strategies by healthy runners in injury prevention and performance improvement. However, their effect on running kinematics throughout an intense prolonged run in this population is unknown. Moreover, there is some controversy regarding the use of custom-made versus prefabricated foot orthoses. This study anal...

La utilización de los soportes plantares para la mejora del rendimiento y la prevención de lesiones durante la carrera se ha incrementado en los últimos años. No obstante, existe gran controversia en relación a sus mejoras [1]. Se ha diseñado un nuevo soporte plantar prefabricado, que se adapta a la ergonomía del pie del usuario por termoconformaci...

Ten recreational female runners participated in two tests for 30 minutes at 80% of their maximum aerobic speed on treadmill, each on a condition of insole: 1) with runners’ usual footwear (control condition) and 2) with thermoformable prefabricated insole. Skin temperature of the foot sole was measured using a thermographic camera (FLIR E60bx) in d...

Una de las competencias transversales fundamentales en el ámbito universitario es la exposición oral. Las rúbricas pueden ser una herramienta especialmente útil para promover su desarrollo y alinear los procesos enseñanza-aprendizaje y la evaluación de la misma. El objetivo principal del estudio ha consistido en determinar la validez y utilidad que...

The use of prefabricated and custom-made insoles during running has been increased recently with the aim to improve performance and reduce injury risk. However, there is a great controversy regarding their improvements (1). A second generation of thermoformable prefabricated insole has been designed in order to improve the ergonomic adaptation to t...

Objective: Foot orthoses are increasingly used by runners despite the controversy about whether their use can reduce the risk of overuse injuries. Some authors have found modifications in plantar pressures with the use of foot orthoses, which could produce changes in the surface skin temperature of the foot soles. The aim of this study was to analy...

The objective of the present study was to investigate differences in oral activity when biscuits of the same type but with subtle composition differences are consumed and how performing a Temporal Dominance of Sensations (TDS) task modifies the way one eats. In addition, comparisons were made between performing a texture TDS (T-TDS) and a flavour T...

Una de las aplicaciones más utilizadas como estrategia de gamificación en el aula para la mejora del proceso de aprendizaje es el KAHOOT. Sin embargo, no existen muchos estudios que hayan evaluado la repercusión de la aplicación de sesiones de este juego al final de la asignatura en los resultados de la evaluación final. De esta forma, se llevó a c...

El objetivo de este libro es presentar una serie de prácticas docentes de biomecánica deportiva para profesionales de las ciencias de la actividad física y del deporte, así como también para otros técnicos deportivos que deseen conocer y aplicar los diferentes sistemas de medición de parámetros biomecánicos y su utilización. El propósito de los a...

The main instruments to assess foot eversion have some limitations (especially for field applications), and therefore it is necessary to explore new methods. The objective was to determine the relationship between foot eversion and skin temperature asymmetry of the foot sole (difference between medial and lateral side), using infrared thermography....

Thermographic studies of the foot can be very useful in 3 different ways: in preventing injury, in analyzing sporting technique and in assessing the effects of footwear and clothing. The aim of this chapter is to discuss several methodological points concerning the thermal analysis of the foot using infrared thermography, as well as to discuss how...

Runners tend to shift from a rearfoot to a forefoot strike pattern when running barefoot. However, it is unclear how the first attempts at running barefoot affect habitually rearfoot shod runners. Due to the inconsistency of their recently adopted barefoot technique, a number of new barefoot-related running injuries are emerging among novice barefo...

El objetivo del presente estudio preliminar fue comparar la actividad muscular de los músculos tibial anterior, peroneo lateral largo, gastrocnemio medial y gastrocnemio lateral entre la carrera con y sin calzado, y la influencia de la fatiga. 7 participantes realizaron una carrera de fatiga de 20 minutos al 75% de su velocidad aeróbica máxima en c...

El objetivo del presente estudio preliminar fue comparar la actividad muscular de los músculos tibial anterior, peroneo lateral largo, gastrocnemio medial ygastrocnemio lateral entre la carrera con y sin calzado, y la influencia de la fatiga. 7 participantes realizaron una carrera de fatiga de 20 minutos al 75% de su velocidad aeróbica máxima en ci...

Existe una gran controversia acerca de si el uso de soportes plantares puede reducir el riesgo de padecer lesiones por sobreuso en corredores. Se ha observado una relación entre las cargas plantares y la temperatura superficial de los pies, por lo que el tipo de soporte plantar podría afectar a la temperatura de la planta del pie. El objetivo del e...