Juan C. Colado

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

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 (...

Fear of falling (FoF) is a disabling condition due to different factors. The present study assessed potential FoF predictors, among sociodemographic, physical, and mental health domains, and explored their structural patterns. This cross-sectional study is part of the Physical Activity Promotion & Domestic Accidents Prevention (PAP & DAP) project,...

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...

Introducción El análisis electromiográfico y de la huella plantar son dos aspectos que se tienen en cuenta en el diagnóstico y tratamiento de lesiones musculoesqueléticas. No obstante, existe muy poca evidencia científica que relacione el tipo de huella plantar con la actividad muscular del gemelo interno (GI) y el externo (GE). El objetivo el sigu...

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...

This study aimed to systematically review and synthesize evidence (i.e., active [land-based training] and non-active controls [e.g., receiving usual care]) regarding the effects of water-based training on patients with non-specific chronic low-back pain (NSCLBP). Web of Science (WOS), PubMed (MEDLINE), EMBASE, EBSCO (SPORTDiscus; CINAHL), and PEDro...

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...

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...

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...

Background Although previous research in pediatric populations has reported performance enhancements following instability resistance training, the effects of different volumes on measures of balance, strength and power and lower limb asymmetry remain unclear. Objective To compare the effect of two 8-week instability resistance training programs (...

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...

To compare the effects of playing one or two games per week on subjective perceived exertion (RPE) and (RPE-based) training load, monotony index, sleep, stress, fatigue, and muscle soreness (Hooper index), total mood disturbance, and injury rate in elite soccer players. Fourteen males from a first-division soccer club (age: 24.42 ± 4.80 years) comp...

Purpose: Blood pressure is a key parameter associated with ocular health and glaucoma. Additionally, brachial blood pressure serves to calculate ocular perfusion pressure. The main aim was to evaluate differences between the most used formulas to calculate mean brachial arterial blood pressure and the effects that physical exercise may have in this...

Purpose: Mean ocular perfusion pressure (MOPP) is calculated as the difference between mean brachial arterial pressure (MBP; with a correction factor to compensate for differences in flow resistance and hydrostatic pressure between the arm and eye) and intraocular pressure (IOP). The main aim was to evaluate differences between the most used formul...

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 A growing body of literature is available regarding the effects of plyometric jump training (PJT) on measures of physical fitness (PF) and sport-specific performance (SSP) in-water sports athletes (WSA, i.e. those competing in sports that are practiced on [e.g. rowing] or in [e.g. swimming; water polo] water). Indeed, incoherent findings...

The objective was to compare the mean propulsive velocity (MPV), maximum power (PMAX), heart rate, and rate of perceived exertion (RPE) during the parallel squat using elastic bands (EB) or weight plates (WP) to load the bar. The effect of relative strength on the dependent variables was analysed. Additionally, the potential of the RPE to predict e...

Microcurrent is a non-invasive and safe electrotherapy applied through a series of sub-sensory electrical currents (less than 1 mA), which are of a similar magnitude to the currents generated endogenously by the human body. This review focuses on examining the physiological mechanisms mediating the effects of microcurrent when combined with differe...

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...

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...

Background Although previous research in pediatric populations has reported performance enhancements following instability resistance training, the effects of different volumes on measures of balance, strength and power and lower limb asymmetry remain unclear. Objective to compare the effect of two 8-week instability resistance training programs (...

Background: A growing body of literature is available regarding the effects of plyometric jump training (PJT) on measures of physical fitness (PF) and sport-specific performance (SSP) in water sports athletes (WSA, i.e., those competing in sports that are practiced on [e.g., rowing] or in [e.g., swimming; water polo] water). Indeed, incoherent find...

Objective: To determine the effect of blood flow restriction (BFR) applied to the legs at different pressures (40% and 60%) on intraocular pressure (IOP) during the execution of ten repetitions maximum (10RM) in the half-squat exercise. Methods: Quasi-experimental, prospective study with 17 healthy physically active subjects (9 males and 8 females;...

The social upheaval in Chile, mainly attributed to inequalities, injustices and inequities, and protected by a political, social and economic systems, among others, was not alien to the Chilean Olympic Committee, its National Olympic Academy and the High Performance Athletes, who convened and developed in Santiago of Chile, the First Citizen Dialog...

The aim was assessing the short-term effects of multicomponent training including some elastic exercises on body composition and balance in healthy older women. In two sessions/week for 12 weeks, 24 women performed 4 blocks of exercise in 2 experimental conditions: a) Control Group; b) Multicomponent Training Group (EMC). The following variables we...

This study aimed to compare intraocular pressure (IOP), mean ocular perfusion pressure (MOPP) and central corneal thickness (CCT) acute adaptations to squat exercise using elastic bands (EB) or weight plates (WP) together with the weight of the bar and applying maximal or submaximal efforts. Cardiovascular parameters (pulse pressure, mean blood pre...

Purpose: To investigate the effects of an eccentric hamstring strength training program (EHT) on sprint performance (10-, 20-, and 30-m sprint times) and change of direction speed (4 × 5-m shuttle run and T-Half test) in male European handball athletes at 2 maturity statuses (prepeak and postpeak height velocity [PHV]). Methods: Forty-five parti...

Purpose: To compare perceived enjoyment (PE), % of heart rate peak (%HRpeak), blood lactate (La), rating of perceived exertion (RPE), and technical-tactical performance of soccer players after four-a-side (4vs4) and three-a-side (3vs3) small-sided games (SSGs) with goalkeepers. Methods: Sixteen males (20.7 ± 0.7 years; experience: 6.9 ± 1.2 year...

The main aim was to evaluate the changes in dynamic, reactive, and power strength, and balance (as volleyball performance-related parameters) in pubertal volleyball players when a part of their normal in�season training regimen was replaced by an elastic band training (EBT). 27 male elite volleyball players were randomly allocated to intervention (...

The deadlift is one of the most widely used resistance exercises by different types of trainees and with different aims including aesthetics, performance and health. There are numerous variations of the deadlift exercise which have different effects on the exercise biomechanics and muscular activation. The main objective of this research was to sys...

The aim of this study was to investigate the effects of a power-strength resistance program with elastic bands on body composition, physical function, and muscle strength in older women. For such purpose, a randomized controlled trial with a pre-post-intervention design was conducted. Thus, 58 healthy, physically independent, sedentary women, aged...

Literature have shown the positive effects of participation in classical sports on children health. However, innovative ideas are necessary to increase their participation according to motivations and individual needs. The purpose of the present study was to know if a new racket sport of reduced play space provokes similar physiological and psychol...

Chronic low back pain is a musculoskeletal pathology with a considerably high prevalence in the elderly. This condition increases disability and negatively affects the quality of life. Muscular resistance training is being used as a cornerstone in interventions for elder people due to the numerous benefits associated with physical and functional he...

The combined effect of a muscle strength training program with the previous application of a topical menthol gel on the intensity of chronic low back pain (CLP) and the functional capacity of overweight/obese older women was evaluated. A randomized controlled clinical trial with parallel group comparison was conducted. In Phase 1 (12-weeks), 31 wom...

Modifying basal elongation of elastic bands (EB) has been proven useful to increase some parameters of the intensity in variable resistance training. Therefore, the question arises as to whether the pertinent resistance could be applied with EB immediately above the sticking point in squat exercises to optimize the performance. The purpose was to a...

The squat is one of the most commonly used resistance exercises for performance and health due to its biomechanical and neuromuscular similarities to a wide range of athletic and everyday activities. There is a large number of squat variations (based on the descent depth, width of the stance, bar placement) with significant biomechanical and neurom...

The benefits of strength training programs with isotonic free weights or machines have been well-documented in all age groups. However, exercise and healthcare professionals sometime question whether it is possible to obtain the same results with devices of variable resistance, such as elastic bands. To answer this question, the purpose of this sys...

The purpose of the study was to examine the concurrent and construct validity of a new perceptual scale to control the exercise intensity using elastic bands (Resistance Intensity Scale for Exercise ; RISE) in the elderly. Twenty-six participants underwent two sessions consisting of 4 exercises. The participants performed three sets of 15 repetitio...

Background Frail individuals experience an accelerated immunosenescence, and exercise has been identified as a therapy to promote a better inflammatory environment. Objective To analyze the effects of 28-weeks of two different exercise protocols on the functional fitness and immune profiles of institutionalized pre-frail and frail women with mild...

Main objective of this study was to provide a basis for the comprehension of the main critical incidents (i.e. obstacles) that Chilean rowers who were medallists in the Pan American Games of Lima 2019 have to face within the academic, socioeconomic and sports processes. 19 athletes were selected through a non-probabilistic sampling. A content valid...

El objetivo de este capitulo es aportar una guía sencilla de recomendaciones y directrices metodológicas con las que el adulto mayor puede poner en práctica una serie de comportamientos básicos, pero fundamentales, al respecto de la realización de ejercicio físico sistemático que pueda a llegar a generarle una mejora en su autonomía. Se pretende qu...

Aquatic cycling is a program of physical exercises performed with immersed stationary bikes. Few studies have provided evidence about the intensity control during its practice. Therefore, the primary aim of this study was to examine the concurrent and construct validity of a new scale for rating perceived exertion (RPE) during aquatic cycling in yo...

Objective: The aim of this study was to analyze the acute effects of aerobic exercise (AE), active videogames (AVG), and AE+AVG on cognitive flexibility, choice reaction time (CRT), and postexercise rate of perceived exertion (RPE) in a sample composed of 49 older adults, 11 men and 38 women (age M = 67.7 ± 4.7 years). Materials and Methods: An in...

The positive importance of physical activity properly prescribed in terms of intensity and volume on a variety of metabolic, musculoskeletal, cognitive and other disorders is widely known. The increasing epidemiology of infertility is due to the changes in lifestyle habits, such as inappropriate diets or the radiations from new-generation electrica...

Purpose: The aim of this study was to test the effects of chair-based exercise programs on salivary stress hormones, physical fitness, and functional autonomy of institutionalized older women. Method: In total, 47 participants (80 ± 8.04 years old) were recruited and allocated into three groups: chair-based aerobic exercises (CAE, n = 19), chair...

Objective: The aim of this cross-sectional study was to examine whether an internal focus on different core muscles during the isometric prone plank exercise increase muscle activity. Design: Twenty university students performed 5 different conditions: regular prone plank (external focus) and prone plank with an internal focus on different muscl...

Background: Although some studies have reported significant improvements in physical function and strength after training programs on Liver Transplant (LT) recipients, there is a lack of knowledge on how it affects in static and dynamic balance, being an important part of these participants' tasks development. The aim of the study was to determine...

Methods: This study was a randomized controlled trial with pre- and postintervention measures. Participants included OOW, aged 60-85 years, with no medical history of disease that would preclude them from engaging in physical exercise. Participants were randomly divided into the following groups: elastic tubes with handles group (ETG; n = 22), tra...