Pablo Jiménez Martínez

University of Valencia | UV · Departamento de Educación Física y Deportes

The purpose of the present systematic review and meta-analysis was to explore the effects of mental fatigue on upper and lower body strength endurance. Searches for studies were performed in the PubMed/MEDLINE and Web of Science databases. We included studies that compared the effects of a demanding cognitive task (set to induce mental fatigue) wit...

Mental fatigue (MF) does not only affect cognitive but also physical performance. This study aimed to explore the effects of MF on muscle endurance, rate of perceived exertion (RPE), and motor units’ activity. Ten healthy males participated in a randomised crossover study. The subjects attended two identical experimental sessions separated by 3 day...

Background: The aim of this study was to explore the effects of a low dose (LD) of 0.625 mg and a high dose (HD) of 2.5 mg of phenylcapsaicin (PC) on full squat (SQ) performance, active muscle (RPE-AM) and overall body (RPE-OB) ratings of perceived exertion, muscle damage, protein breakdown, metabolic response, and 24-h recovery in comparison to pl...

Objective: Phenylcapsaicin (PC) is a new capsaicin analog which has exhibited a higher bioavailability. This sudy assessed the effects of a low dose (LD) of 0.625 mg and a high dose (HD) of 2.5 mg of PC on aerobic capacity, substrate oxidation, energy metabolism and exercise physiological variables in young males. Materials and methods: Seventeen a...

This study aimed to determine the impact of caffeine (200 mg), beta-alanine (3 g), and their combination on intraocular pressure (IOP), ocular perfusion pressure (OPP), and mean arterial pressure (MAP) at rest and after resistance training. Twenty young men (age = 23.4 ± 4.5 years) took part in this placebo-controlled, triple-blind, balanced crosso...

Carbohydrate (CHO) intake during exercise could decrease the subjective perceived exertion and promote recovery; however, the effects of intra-training CHO ingestion remain uncertain in CrossFit® (CF) sessions. Therefore, the aim of this randomized, triple-blind, placebo-controlled crossover trial was to investigate the effect of acute CHO intake d...

Background/Objectives: This study investigated intraocular pressure (IOP) changes after a blood draw in older adults considering sex, age, and baseline IOP. Methods: Fifty-three subjects (54.7% females; age: 68.50 ± 4.46 years; Visual Function Index [VF14]: 94.50 ± 7.50 points; mean contrast sensitivity function (CSF) for both eyes in each spatial...

Caffeine and beta-alanine are widely used in multi-ingredient pre-workout supplements believed to enhance resistance training, but their specific role in driving this effect remains unclear. The current study employed a randomized, triple-blinded, placebo-controlled and crossover experimental design to explore the acute effects of caffeine (200 mg)...

The aims of this repeated measures study were (I) to determine the reliability of single-leg squat 1RM and inter-limb asymmetries in pre-pubertal athletes, and (II) to assess associations between bilateral and/or unilateral squat 1RM performance, inter-limb asymmetries, and participants’ chronological and biological age. Thirty-one soccer players (...

The main objective of this placebo-controlled, triple-blind, balanced crossover study was to assess the acute effects of phenylcapsaicin (PC) intake (2.5mg) on intraocular pressure (IOP), ocular perfusion pressure (OPP) and heart rate (HR) during a 30 minutes cycling task performed at 15% of the individual maximal power. Twenty-two healthy young ad...

González-Cano, H, Martín-Olmedo, JJ, Baz-Valle, E, Contreras, C, Schoenfeld, BJ, García-Ramos, A, Jiménez-Martínez, P, and Alix-Fages, C. Do muscle mass and body fat differ between elite and amateur natural physique athletes on competition day? A preliminary, cross-sectional, anthropometric study. J Strength Cond Res 38(5): 951-956, 2024-Natural ph...

Background: The use of elastomeric technology in sports garments is increasing in popularity; however, its specific impact on physiological and psychological variables is not fully understood. Thus, we aimed to analyze the physiological (muscle activation of the pectoralis major, triceps brachii, anterior deltoid, and rectus abdominis, capillary bl...

This study aimed to compare the mechanical (lifting velocity and maximum number of repetitions), physiological (muscular activation, lactate, heart rate, and blood pressure), and psychological (rating of perceived exertion) responses to upper-body pushing exercises performed wearing a sports elastomeric garment or a placebo garment. Nineteen physic...

The aim was to evaluate the concurrent validity and reliability of the Resistance Intensity Scale for Exercise [RISE], which uses verbal descriptors, to quantify the intensity in velocity-based training with elastic bands. Eighteen trained volunteers performed parallel squats at maximum speed at 40%, 55%, 70%, and 85%1RM in four sessions, two for f...

Bodybuilding is characterized by high-rates of sport supplementation. This is the first study to compare the supplementation patterns of winners (WB) and non-winners (NWB) among international natural bodybuilders during contest preparation. Fifty-six natural bodybuilders (5 women) (age = 28.85 ± 8.03 years; final body mass = 71.50 ± 10.28 kg), 19 W...

This study aimed to explore whether the relationship between perceptual (rating of perceived exertion; RPE) and mechanical (maximal number of repetitions completed [MNR], fastest set velocity, and mean velocity decline) variables is affected by the length of inter-set rest periods during resistance training sets not leading to failure. Twenty-three...

The bulk of research on microfiltered seawater (SW) is based on its short-term effects. However, the long-term physiological adaptations to combining SW and resistance training (RT) are unknown. This study aimed to analyse the impact of an RT program using elastic bands combined with SW intake on hepatic biomarkers, inflammation, oxidative stress,...

This study aimed to determine the acute effects of high-intensity forward-backward and low-intensity side-to-side plyometric jumps performed following the warm-up on sprint (5, 10, and 15 m) and change-of-direction (COD) (T-half test and repeated T-half tests) performance in youth volleyball players. After a familiarization week, 30 male volleyball...

Dietary supplements are nutritional complements which ingested in conjunction with a healthy diet may improve health and/or sports performance. By their own definition, these substances are legal and not banned by international agents such as the World Antidoping Agency. Accordingly, these products are free-sale, which makes them highly popular bet...

Objective: This study aimed to examine the effects of phenylcapsaicin (PC) supplementation on strength performance and neuromuscular activity in young trained male subjects. Materials and methods: A total of 25 trained subjects [full-squat (SQ) one repetition maximum (1RM) = 125.6 ± 21.0 kg] were enrolled in this randomized, triple-blinded, crossov...

Several devices (e.g., linear transducers) have been used for predicting resistance training intensity. However, subjective scales, such as rating of perceived exertion (RPE), are proposed as reliable and easier-to-use tools for monitoring intensity during resistance training. Accordingly, different perceptive scales have been presented in previous...

La tendinopatía del manguito de los rotadores (TR), es el proceso degenerativo de los tejidos de la bursa (Teunis et al., 2014). La TR es reconocida como el tercer desorden más prevalente en esta área, con alta recurrencia y cronicidad (Minagawa et al., 2013). El objetivo de este estudio de 8 semanas fue explorar los efectos de un programa de ejerc...

The aim of this study was to explore the effects of mental fatigue from smartphone use and Stroop task on bench press force-velocity (F-V) profile, one-repetition maximum (1RM), and countermovement jump (CMJ) performance. Twenty-five trained subjects (age = 25.8 ± 5.7 years) completed three sessions separated by 1 week following a randomized double...

The aim was to explore the effects of a 32-week resistance training (RT) intervention with elastic bands with or without microfiltered seawater (SW) supplementation on isokinetic strength, bone mineral density (BMD), body composition, and subjective quality of life in postmenopausal women. Ninety-three untrained women (age: 70.00±6.26 years; body m...

Background: Non-communicable diseases (NCD) are an important concern for public health be-cause of their high rates of morbidity and mortality. A prevalent lifestyle-linked NCD is type 2 diabetes mellitus (T2D). Recently, molecular biomarkers secreted by adipocytes, called adi-pokines, have been linked with T2D and muscle function disturbances. How...

Resistance training is one key method for improving physical conditioning. With this purpose, Menatechpro System® has designed an avant-garde garment that includes elastomeric technology that may stimulate the neuromuscular system in a better way, but a deeper knowledge of its effects is needed. Objective: To explore the effects of a new garment wi...

Objetivo: Recopilar información sobre la activación del pectoral mayor en ejercicios de fuerza de empuje horizontal en los que se emplea una carga externa. Método: Se realizó una revisión en tres bases de datos distintas (PubMed, Web of Science y SPORTDiscus) hasta el 4 de mayo de 2022 bajo los criterios PRISMA (2020) (1). Los criterios de inclusió...

Introducción: La ciencia ha generado un debate sobre las consecuencias del entrenamiento de la fuerza en la presión intraocular (PIO), con artículos asegurando aumentos y otros encontrando disminuciones. Sólo un estudio previo ha analizado el uso de bandas elásticas para cargar la barra en sentadillas y ha obtenido disminuciones de PIO similares a...

Introducción: El empleo de bandas elásticas (BE) para cargar la barra en sentadillas ha mostrado adaptaciones agudas similares de presión intraocular (PIO) y presión de perfusion ocular (PPO) en comparación con discos. Sin embargo, las BE permiten realizar más repeticiones, probablemente debido a movilizar menos kilogramos por debajo del sticking p...

BACKGROUND: Bodybuilders modify their nutritional strategies during pre-contest phase. This study aimed to explore for the first time the nutritional and supplementation strategies of high-level amateur (AMA) and professional (PRO) Spanish Men´s Physique bodybuilders during pre-contest phase. METHODS: Eleven elite male bodybuilders (6 PRO and 5 AMA...

Diabetes Mellitus (DM) which is characterized by pancreatic beta-cell dysfunction, peripheral insulin resistance, or both, is one of the most relevant cardiovascular risk factors worldwide. Its most prevalent and studied form is type 2 diabetes mellitus (DM2), a chronic multifunctional condition linked to physical inactivity and lifestyle. The purp...

Oral capsaicinoids and capsinoids supplementation has been studied recently for a plausible ergogenic impact on sports performance. However, non-aggregated literature has focused on the impact of this substances in healthy humans’ performance. The aim of the present systematic review was to explore the effects of capsaicinoids and capsinoids on res...

Mental fatigue (MF) does not only affect cognitive but also physical performance. This study aimed to explore the effects of MF on muscle endurance, rate of perceived exertion (RPE), and motor units activity. Ten healthy males participated in a randomised crossover study. The subjects attended two identical experimental sessions separated by three...