Manuel A. Rodríguez-Pérez

• University of Almería

Background Maximum repetitions to failure (RTF) and repetitions in reserve (RIR) can be estimated through fastest mean velocity (MV fastest ) and mean velocity (MV), respectively. However, the impact of inter-repetition intervals (IRI) on these relationships in free-weight back squat and bench press exercises is unclear. Hypothesis The IRI would a...

Baena-Raya, A, Robles-Ruiz, J, Pérez-Castilla, A, Pareja-Blanco, F, and Rodríguez-Pérez, MA. Effects of light versus very heavy resisted sprint training on multidirectional speed in semi-professional soccer players. J Strength Cond Res XX(X): 000-000, 2024-The purpose of this study was to evaluate the effects of an 8-week resisted linear sprint tra...

Purpose Resistance training mitigates side effects during and after cancer treatment. To provide a new approach for precisely and safely assessing and prescribing the intensity of resistance training in supportive cancer care, the purpose of this study was to evaluate the load-velocity relationship during the row exercise in women survivors of brea...

Background Estimating repetitions in reserve (RIR) has been established as a valid and practical method for monitoring set configuration concerning proximity to failure in resistance training. However, factors such as sex and exercise equipment could interfere with the estimation process. Therefore, this study aimed to determine the influence of se...

This study investigated how equipment and sex affect the prediction accuracy of the maximum number of repetitions performed to failure (RTF) using the fastest mean velocity of the set (MVfastest). Sixteen men and twelve women completed four sessions (two using free-weight equipment and two sessions using the Smith machine). Each session involved th...

The aims of this study were to assess (i) the load–velocity relationship during the box squat exercise in women survivors of breast cancer, (ii) which velocity variable (mean velocity [MV], mean propulsive velocity [MPV], or peak velocity [PV]) shows stronger relationship with the relative load (%1RM), and (iii) which regression model (linear [LA]...

Objectives This study assessed the transparency and replicability of exercise‐based interventions following bariatric surgery by evaluating the content reporting of exercise‐based clinical trials. Design The study design of the present article is a systematic review. Data sources PubMed, Scopus, Web of Sciences, PsycINFO, and Cochrane were search...

INTRODUCTION: The maximum number of repetitions performed to failure (RTF) and the fastest mean velocity (MVfastest) relationships in a set have been proposed for the prescription of the loads associated with a specific RTF to decide how many repetitions to perform in each training set (1). This study compared the goodness-of-fit of the relationshi...

Objective The aims were i) to assess the effects of a 12-weeks resistance training program on between-arms volume difference and shoulder-arm disabilities in breast cancer survivors, and ii) to evaluate whether the main risk factors for developing cancer-related lymphedema and shoulder-arm disabilities were associated with the effects of the traini...

Citation: Sánchez-López, S.; López-Sagarra, A.; Ortega-Becerra, M.; Jiménez-Reyes, P.; Rodríguez-Pérez, M.A. Change of Direction Performance in Soccer Players: Comparison Based on Horizontal Force-Velocity Profile. Abstract: Background: The study aimed to analyze the relationship between the mechanical parameters of the horizontal force-velocity...

Background Physical testing is crucial for athlete monitoring, talent identification, optimizing training, and tailoring programs to enhance game-performance in elite competitions. Hypothesis Load-velocity (L-V) relationship variables discriminate between elite and junior volleyball players, correlate with volleyball-specific performance, and are...

This study examined the impact of different inter-repetition rest (IRR) configurations (zero seconds [IRR0], three seconds [IRR3], and self-selected less than five seconds [SSIRR]) on estimating the number of repetitions (Nrep) and the percentage of completed repetitions relative to the maximum number of repetitions possible to failure (%rep) after...

We examined the accuracy of twelve different velocity-based methods for predicting the bilateral leg-press exercise one-repetition maximum (1RM) in breast cancer survivors. Twenty-one female breast cancer survivors (age 50.2 ± 10.8 years) performed an incremental loading test up to the 1RM. Individual load-velocity relationships were modeled by lin...

This study aimed to examine the load-velocity (L-V) relationship in the bench-press (BP) and leg-press (LP) exercises performed unilaterally and to compare this unilateral L-V relationship with their bilateral variants. Nineteen men (age = 23.5 ± 2.1 years) completed two incremental tests in BP and LP performed bilaterally and unilaterally across t...

Purpose Arterial stiffness (AS) describes the mechanical properties of the arterial wall and predicts cardiovascular health. Even if it is known that AS is improved by aerobic exercise, the effects of resistance training (RT) are less clear. Therefore, this meta-analysis aimed to assess the effects of RT on AS. Methods A systematic search for rand...

Purpose: This study aimed to (1) evaluate the acute effects of different interrepetition rest full-squat protocols on countermovement jump (CMJ) height, velocity loss (VL), and skin temperature (Tsk) and (2) determine whether the VL, the changes in Tsk, or the individual strength level is associated with the change in CMJ height. Methods: Sixtee...

OBJECTIVE Functional capacity is one of the main risk factors for falls among older adults. The aim of this systematic review and meta-analysis was to determine the effect of power training on functional capacity test (FCT) related to fall risk in older adults. DATA SOURCES Systematic searches were conducted in four databases, including PubMed,...

Baena-Raya, A, Díez-Fernández, DM, López-Sagarra, A, Martínez-Rubio, C, Soriano-Maldonado, A, and Rodríguez-Pérez, MA. Novel curvilinear sprint test in basketball: reliability and comparison with linear sprint. J Strength Cond Res XX(X): 000-000, 2022-This study (a) evaluated the reliability of a curvilinear sprint (CS) test to assess kinetic and k...

This study aimed to describe the acceleration–speed (AS) profile of soccer players during competition and to analyse their seasonal changes and inter-player differences. The AS profile values (theoretical maximum acceleration (A0) and speed (S0)) of 14 elite soccer players were studied in 18 matches, which were divided into five season periods. The...

Introducción El objetivo de este estudio fue examinar la relación carga-velocidad de los ejercicios de press banca (PB) y prensa de piernas (PP) realizados de manera unilateral y analizar sus diferencias con las variantes bilaterales. Método Diecinueve hombres (edad = 23,5 ± 2,1 años, peso = 76,8 ± 8,3 kg, altura = 1,77 ± 0,04 m; 1RM PB: 89,0 ± 16...

Purpose: This study assessed the effects of 12-week supervised resistance training combined with home-based physical activity on physical fitness, cancer-related fatigue, depressive symptoms, health-related quality of life (HRQoL), and life satisfaction in female breast cancer survivors. Methods: A parallel-group, outcome assessor-blinded, randomi...

This study aimed to compare the maximal mechanical variables derived from the load-velocity (L-V) relationship and 2000-meter rowing ergometer performance between rowers of different age categories, and to identify the L-V relationship variables more closely related to 2000-meter rowing ergometer performance. Nineteen competitive rowers (15 males a...

This study examined which mechanical variables derived from a vertical jump (i.e., concentric peak force [ConcPF] and eccentric peak force [EccPF], flight time [FT]: contraction time [CT], eccentric deceleration rate of force development [EccDecRFD]), linear sprint (i.e., theoretical maximal force [F0] and velocity [V0], maximal power output [Pmax]...

The aims of this systematic review were to synthetize the current evidence about (i) the force-velocity (FV) profile parameters (maximal values of force [F0], velocity (V0), and power [Pmax]) obtained from the Samozino’s method in different sports; (ii) the association of the FV profile parameters with sport performance outcomes; and (iii) the effe...

The aims of this study were to describe patterns of active commuting to school (ACS) of preschool children, and to analyse the relationship between ACS and family socio-economic factors. A total of 2636 families of preschoolers (3-to-5 years old) were asked to complete a questionnaire at home about the mode of commuting to school of their children...

Abstract Background: Although breast cancer (BC) is the most prevalent type of cancer in the world, its high survival rate implies that many people live long after the treatments and face their side effects. The physical function (PF) and health-related quality of life (HRQoL) of people surviving BC decreases significantly, which makes important to...

Background Previous studies have investigated weight loss caused by exercise following bariatric surgery. However, in most cases, the training program is poorly reported; the exercise type, volume, and intensity are briefly mentioned; and the sample size, selection criteria, and follow-up time vary greatly across studies. Purpose The EFIBAR study...

Concurrent training (CT), characterised by combining both aerobic and resistance training modalities within the same session, is recognised to improve metabolic syndrome (MetS) markers, but little is known about the effects of different configurations (i.e., order) of these exercise modalities on MetS markers and the interindividual responses. The...

The aims of this study were: (i) to analyse the load‐velocity relationship in the bilateral leg‐press exercise in female breast cancer survivors, (ii) to assess whether mean velocity (MV) or peak velocity (PV) show stronger relationship with the relative load, and (iii) to examine whether linear (LA) or polynomic (PA) adjustment predict the velocit...

Objetivo: Evaluar la asociación entre la fuerza de prensión manual (FPM) y diversos parámetros de condición física y composición corporal en mujeres supervivientes de cáncer de mama. Método: Se realizó un estudio transversal con los datos basales del ensayo clínico EFICAN (Ejercicio FÍsico para supervivientes de CÁNcer de mama). Participaron 60 muj...

The aim of this study was to examine the concurrent validity and reliability of a functional electromechanical dynamometer (FEMD) to assess the isometric mid-thigh pull (IMTP) kinetic variables: peak force (PF), rate of force development (RFD), and time-specific force values (50-, 100-, 150-, and 200-ms). Twenty-seven male collegiate athletes (age:...

The aim of the present study was to analyze the association of the sprint force-velocity profile [Hzt FV profile] variables with change of direction [COD] performance in female futsal players. Twelve female futsal players (age: 19.83 ± 4.2 years; body height: 160.75 ± 8.37 cm; body mass: 57.64 ± 8.3 kg) volunteered to be evaluated in the following...

Sprint running and change of direction (COD) present similar mechanical demands, involving an acceleration phase in which athletes need to produce and apply substantial horizontal external force. Assessing the mechanical properties underpinning individual sprint acceleration might add relevant information about COD performance in addition to that o...

Understanding the relationship between mechanical variables derived from actions such as jumping, sprinting, or ballistic bench press throwing and sport-specific performance moves is of scientific and practical interest for strength and conditioning coaches for improving training programs. We examined the association between mechanical variables de...

El objetivo del presente trabajo fue investigar la eficacia de un programa de intervención de seis semanas de duración basado en el entrenamiento de habilidades psicológicas y mindfulness en el control del estrés, la influencia de la evaluación del rendimiento, la motivación, la habilidad mental y la cohesión de equipo en jóvenes jugadoras de volei...

We evaluated the gender-specific associations between the mechanical variables derived from the horizontal force-velocity (FV) profile (i.e., theoretical maximal force [F0], velocity [V0], maximal power output [Pmax], peak ratio of the effective horizontal component [RFpeak], and the force application technique index [DRF]) and the change of direct...

This study aimed to assess the association of the mechanical variables derived from the force-velocity (FV) profile (i.e. theoretical maximal force [F0], velocity [V0] and maximal power output [P max ]) with change of direction (COD) performance in soccer, basketball and tennis players. Fifty-four male athletes (soccer n = 23; tennis n = 16; basket...

The influence of aerobic training on cardiovascular disorders has already been demonstrated. However, the effect of resistance training is less well known. Arterial stiffness is an increasingly important measure in cardiovascular health. Therefore, this review attempted to study the results of resistance training-based interventions on arterial sti...

The aim of this study was to analyze the relationship between movement velocity and relative load (%1RM) in the deadlift exercise. Fifty men (age = 23.8 ± 3.6 years, body mass = 78.2 ± 8.3 kg, height = 1.78 ± 0.06 m) performed a first evaluation (T1) consisting of a one-repetition maximum (1RM) test. Forty-two subjects performed a second evaluation...

The monitoring of the high intensity activity-demands profile during official matches (OMs) and training sessions (TSs) provides a deeper understanding of the relationship between training and competition loads as well as players' fitness characteristics. The aims of this study were to: 1) describe the training and match high intensity activity-dem...

BACKGROUND The cardiovascular response to resistance training is influenced by different variables such as intensity and volume. OBJECTIVE To compare the effects of resistance training sessions differing in level of effort on blood pressure and arterial stiffness. METHODS Thirty-two men performed 3 sets at 75% of 1-RM during the bench press and s...

Background: Severe and morbid obesity are increasing globally, particularly in women. As BMI increases, the likelihood of anovulation is higher. The primary aim of the EMOVAR clinical trial is to examine, over the short (16 weeks) and medium (12 months) term, the effects of a supervised physical exercise program (focused primarily on aerobic and r...

The aim of this study was to test individual adaptation kinetics to a high-resistance sprint training program designed to improve maximal horizontal power (Pmax), and compare the group and individual results of a classical “pre-post” analysis, and a “pre-peak” approach. Thirteen male and 9 female trained sprinters had their 30-m sprint performance...

Purpose This study aimed to evaluate the changes in countermovement jump (CMJ) height after two drop-jump (DJ) protocols with different volumes, and to explore the possibility of predicting the changes in CMJ height based on the vertical force–velocity (F–v) profile. Method Thirty-four male athletes (age: 21.9 ± 2.0 years) were tested on three occ...

Purpose: This study aimed to evaluate the changes in countermovement jump (CMJ) height after 2 drop jump (DJ) protocols with different volumes, andto explore the possibility of predicting the changes in CMJ height based on the vertical force-velocity (F-v) profile. Method: Thirty-four male athletes (age: 21.9 ± 2.0 years) were tested on 3 occasions...

Background: The number of people living with the side effects of breast cancer treatment (eg, loss of muscular mass and muscular strength, upper-limb mobility and disability, lymphedema, cardiac toxicity, and reduced quality of life) is increasing yearly. These consequences can be improved through exercise, specially combining resistance and aerob...

Background: There is increasing evidence of weight regain in patients after bariatric surgery (BS), generally occurring from 12 to 24 months postoperatively. Postoperative exercise has been suggested to ad long-term weight maintenance and to improve physical function in BS patients. However, there are a limited number of intervention studies inves...

Physical inactivity is recognized as a determinant of low physical fitness and body composition in preschool children, which in turn, are important markers of health through the lifespan. Objective methods to assess physical activity, physical fitness and body composition in preschool children are preferable; however, they have some practical limit...

Objectives To describe physical fitness and performance profiles of elite young road-race motorcyclists and to evaluate the effects of four specific training stages on body composition and muscular fitness. Equipments and methods Twenty-seven elite young road-race motorcyclists aged 15.6 ± 1.1 years, were evaluated on two different occasions, at t...

Objectives: Reference values are necessary for classifying children, for health screening, and for early prevention as many non-communicable diseases aggravate during growth and development. While physical fitness reference standards are available in children aged 6 and older, such information is lacking in preschool children. Therefore, the purpo...

The aim of this work was to identify, synthesize and evaluate the results of randomized controlled trials examining the effects of resistance training on performance indicators in previously trained endurance runners. A database search was carried out in PubMed, Science Direct, OvidSPMedLine, Wiley, Web of Science, ProQuest and Google Scholar. In a...

Aim: To know the effects of two protocols of Post-Activation Potentiation (PAP) on the performance in a Countermovement Jump (CMJ) and its relationship with the Force-Velocity Profile (Profile F-V). Methodology: Repetition Maximum (RM) was evaluated in the squat exercise, and the FV Profile of 9 handball players of Silver Honor Division (age, 21.3...

La falta de tonificación muscular, una menor movilidad en MMII, mayor rigidez articular y la pérdida del control postural provocan fragilidad y caídas en las personas mayores que pueden tener graves consecuencias para mantener la autonomía e independencia (fracturas, miedo a caerse,etc). Con la edad, la pérdida de fuerza en las piernas, el deterior...

Resumen Objetivo: Revisar la literatura existente sobre entrenamiento concurrente de Fuerza y Resistencia en jugadores de Balonmano de élite para definir estrategias válidas de cara a la planificación del entrenamiento. Metodología: Se llevó a cabo una revisión sistemática de la literatura en bases de datos como PubMed, SpringerLink, etc., siguiend...

Fundamentos: Existen evidencias sobre los beneficios que conlleva la participación en Programas de Ejercicio Físico (PEF) en la empresa y por ello es importante que la participación en un PEF sea la mayor posible. El objetivo de este trabajo es hacer un estudio piloto que pueda dar información sobre el perfil de los trabajadores que participan y de...

Introdução: O treinamento resistido com oclusão vascular parcial (OVP) é um método alternativo de treinamento que proporciona adaptações estruturais e funcionais que tem sido associada às respostas agudas de edema muscular. No entanto, a intensidade ótima para indução do edema muscular permanece desconhecida. O objetivo do estudo foi comparar a inf...

Resistance training combined with superimposed partial occlusion (OCPS) is a recent alternative for high intensity resistance training. Several mechanisms are hypothesized to explain the benefits in hypertrophy and strength gains. This method to improve the structural factors in skeletal muscle and strength and exist in a relationship between the b...

The aim of this study was to analise the effects of blood flow restriction training on jumping performance.

Actually It is known that to reach high levels of sports performance is indispensable the training. The aim of this study has been to analyze the habits of training of 27 young motorcyclists of international elite across a questionnaire. There are a high percentage of pilots who do not realize specific and systematic programs of training physical...

En la especialidad deportiva de motociclismo la literatura científica se ha centrado en aspectos tecnológicos, de seguridad, incluso patrones de lesiones, existiendo poca información sobre variables psicológicas de los deportistas. El objetivo de nuestro estudio fue evaluar si el efecto de una intervención en habilidades técnicas y condición física...

In the motorcycling sport specialty, scientific literature has focused on technology, safety or even on injury variables; however there is little information regarding psychological variables. The aim of our study was to evaluate the effect of a technical and physical intervention on psychological variables such as self-esteem, self-assessment, app...

The Mapuche ethnic group has a wide distribution in the IX Region, the migration process of urban development itself, has made part of the Mapuche people move to the city of Temuco, modifying their lifestyles. The study of Body Mass Index (BMI) is the standard recommended by the WHO to know the nutritional status according to the technical standard...

The Mapuche ethnic group has a wide distribution in the IX Region, the migration process of urban development itself, has made part of the Mapuche people move to the city of Temuco, modifying their lifestyles. The study of Body Mass Index (BMI) is the standard recommended by the WHO to know the nutritional status according to the technical standard...

La alimentación es fundamental para rendir en el deporte, ya que una dieta inadecuada puede limitar el resultado. Por ello, el objetivo de este estudio ha sido conocer los hábitos nutricionales de 27 jóvenes pilotos de motociclismo de élite internacional a través de un cuestionario. Los resultados muestran cómo un 96.2% de los pilotos se alejan de...

The aim of the study was to describe anthropometric and physical characteristics of elite young road-race motorcyclists (MC). 27 riders (15.6±1.1 years, 54.6±6.9 kg, 166.9±6.7 cm) competing at international elite level participated in this study. Anthropometric variables, hand grip and lumbar isometric strength, and lower-body muscular strength wer...