José Miguel Martínez Sanz

University of Alicante | UA · Nursing

Background: In the last few years endurance sports have experienced a great increase in the number of competitions and participants. Dietary-nutritional planning is key for performing well during such competitions. To date, there is no questionnaire expressly developed to be able to analyze the consumption of liquids, foods, and supplements, as we...

The performance of male soccer players (MSPs) depends on multiple factors, such as body composition. It is understandable to think that, due to the physical demands and specific functions during play, body composition may vary depending on the playing position. The aim of this systematic review and meta-analysis was to describe the anthropometric,...

Background: The use of sports supplements (SS) to improve sports performance is very common in athletes. In the case of triathletes, the physiological characteristics of the sport may require the use of certain SS. Although the consumption of SS is widespread in this sport, very few studies have investigated it thus far. The aim is to analyze the...

El fútbol es uno de los deportes más practicados y mediáticos del mundo. El rendimiento de los futbolistas profesionales depende de múltiples factores como el de la composición corporal (CC). Las demandas físicas del fútbol actual han cambiado, donde el patrón ideal de CC debe adaptarse, midiéndose a través de técnicas como la antropometría, bioimp...

El balonmano es un deporte complejo y multifactorial. Estudios previos han mostrado como la maduración biológica y la edad cronológica influyen en las características cineantropométricas y la aptitud física. Además, la alimentación también juega un papel fundamental en estos aspectos. Sin embargo, no hay ningún estudio en jugadores de balonmano que...

The aims of this research were to analyze the differences in kinanthropometric characteristics and physical performance as a function of biological maturation, as well as to analyze these differences with the inclusion of the covariates age, maturity offset and diet, and to know how the players were classified according to BMI z-score. Seventy-thre...

The performance of male soccer players (MSP) depends on multiple factors such as body composition. The physical demands of modern soccer have changed, so the ideal body composition (BC) requirements must be adapted to the present. The aim of this systematic review and meta-analysis was to describe the anthropometric, BC, and somatotype characterist...

Background: The use of sports supplements (SS) to improve sports performance is widespread in all types of athletes, however, the specific characteristics of mountain races may require the use of certain SS. Despite being a sport where the consumption of SS seems widespread, few studies have been conducted in this regard. The objective of this stu...

Introducción: El fútbol sala femenino es un deporte de esfuerzo intermitente. Las deportistas necesitan cumplir con las recomendaciones nutricionales para obtener un rendimiento adecuado. El objetivo del presente estudio es describir la ingesta dietética y la composición corporal de un equipo de élite universitario de fútbol sala. Metodología: Est...

Background: Sports supplements (SS) are widely consumed by many types of athletes to improve their performance. These SS are classified according to their level of scientific evidence, by the ABCD system from the Australian Institute of Sport (AIS). In open water swimming, their use may be necessary due to the physiological challenges posed by thi...

Introduction. Handball is a team sport whose performance depends on a large number of factors. The objectives of the present study were to analyze the differences in physical performance, kinanthropometric variables, and adherence to the Mediterranean diet (MD), in handball players according to sports category, as well as the possible relationships...

Introduction: sports supplements (SS) are widely used by all types of athletes to improve their performance. These SS are classified according to the ABCD system of the Australian Institute of Sports (AIS) from higher to lower scientific evidence. In mountain runners, their use could be necessary due to the physiological demands required by this s...

Futsal is classified as a high-intensity intermittent sport or repeated-sprint sport. Explosive and very fast movements are performed with short reaction time, interspersed with playing time of 3 to 6 min during the 40 min match, at intensities of 85-90% of maximum HR. Performance factors such as agility, sprint repetition capacity, aerobic enduran...

Indoor team sports are characterized by matches that are shorter in duration and with frequent substitution (high-intensity intermittent). The main goal of teams is to best cover athletes’ physiological demands, while meeting their dietary intake needs is critical. The aim of this study is to conduct a systematic review of the dietary intake of ind...

CrossFit® is a high-intensity sport that combines weightlifting, gymnastic skills, and cardiovascular exercises. To find the anthropometric references that define the optimal body composition, it is essential to first find an optimal body composition for one’s physical preparation. The objective of this study is to describe the anthropometric chara...

Endurance athletes are defined as those who take part in competitive events and workouts that last more than 30 minutes. The high physical demand in this type of event, as well as the possibility that any small gain obtained may provide a real improvement in sports performance, encourages athletes to consider the use of various tools and/or strateg...

El fútbol es uno de los deportes más practicados y mediáticos del mundo. El rendimiento de los futbolistas profesionales depende de múltiples factores como el de la composición corporal (CC). Las demandas físicas del fútbol actual han cambiado, donde el patrón ideal de CC debe adaptarse, midiéndose a través de técnicas como la antropometría, bioimp...

Introducción: El sobrepeso y obesidad infantil se ha convertido en uno de los principales problemas de salud pública. Existen diversas causas y factores que intervienen en el desarrollo de esta patología, y que predisponen su aparición a edades tempranas, lo que suma complejidad a las estrategias de prevención y tratamiento. Por tanto, resulta de i...

Background: In any sport, it is of the utmost importance to identify variables capable of positively influencing scores. Futsal is a sport of intermittent high-intensity intervals that requires the athletes’ physical, technical, and tactical skills. There are no specific recommendations on anthropometry–body composition for this sport. The aim of t...

The study of body dimensions and proportions through anthropometry is important for the identification of young talents in swimming. Anthropometric studies of swimmers in the Spanish population are scarce. The main objective of this study is the description of anthropometric profile in young swimmers, differentiated by sex and styles. 34 swimmers (...

The gut microbiota is the set of microorganisms that reside in the digestive tract. It has various functions, including the absorption of nutrients, the production of energy, and the synthesis of vitamins. This microbiota can be influenced by many factors and this can affect athletic performance. The aim of this chapter is to analyze how the compos...

Obesity is a multifactorial disease with a broad etiology and multiple comorbidities that represent a major public health problem. An emerging factor in obesity is the intestinal microbiota that, according to several studies, is directly implicated in obesity and its metabolic complications. However, it is an ongoing challenge for scientists to und...

Objetivo: La valoración antropométrica es muy utilizada en el diagnóstico y seguimiento de las personas con obesidad, aunque la toma de algunas mediciones antropométricas presenta dificultades por el propio morfotipo de la persona y la inexistencia de normas estandarizadas. El objetivo del presente documento fue generar recursos audiovisuales sobre...

Different rugby positions make different demands on players. It, therefore, follows that optimum body composition may vary according to the position played. Using anthropometry and bioimpedance analysis (BIA) to assess body composition, the present study aimed to compare the effect of sex and position on body composition variables using anthropomet...

El Programa de Acción Tutorial de la Universidad de Alicante (PAT-UA) es una acción educativa que se viene desarrollando desde el curso 2005/2006. Su finalidad es acompañar y asesorar al alumnado de la UA al comienzo y a lo largo de toda su carrera universitaria, así como en el afrontamiento del futuro profesional. El PAT depende del Vicerrectorado...

People’s eating habits and lifestyle can have a negative impact on health. In situations of difficulty or socioeconomic crisis, these habits tend to be modified, leading to unhealthy dietary patterns that result in an increase of chronic non-communicable diseases (NCDs). Previous studies have indicated that, due to the state of alarm imposed in Spa...

El cross country es una modalidad del ciclismo de mountain bike (MTB), cuyas competiciones se caracterizan por dar un determinado número de vueltas a un circuito con una distancia desde 6-9km hasta 40-200km. En estos eventos, es importante planificar una estrategia dietético-nutricional para mitigar la aparición de resultados adversos relacionados...

Managing the body composition of athletes is a common practice in the field of sports nutrition. The loss of body weight (BW) in resistance-trained athletes is mainly conducted for aesthetic reasons (bodybuilding) or performance (powerlifting or weightlifting). The aim of this review is to provide dietary–nutritional strategies for the loss of fat...

Introducción: El uso de suplementos deportivos (SD) es muy común entre los atletas y durante los últimos años la prevalencia de su consumo ha ido aumentando. Sin embargo, no todos los SD proporcionan los beneficios que se busca cuando se decide consumir este tipo de sustancias. Es por ello que las entidades científicas han puesto su foco en la eval...

The use of nutritional supplements (NSs) is a widespread practice in both professional and amateur athletes. Their choice must be based on criteria of safety, legality, and effectiveness. There are several risks that some of these products can trigger, this being a reason for fraud to the consumer. By way of example, the presence of a legal substan...

El fútbol es uno de los deportes más practicados en el mundo, siendo la categoría profesional masculina la más mediática. El rendimiento de dichos atletas depende de múltiples factores entre los que se encuentra la composición corporal. Actualmente, las demandas físicas del fútbol moderno han cambiado, por lo que el patrón ideal de composición corp...

Introduction: The use of nutritional supplements (NSs) is a widespread practice in both professional and amateur athletes. Their choice must be based on criteria of safety, legality, and effectiveness. There are several risks that some of these products can trigger, this being a reason for fraud to the consumer. By way of example, the presence of...

Caffeine is a food supplement widely consumed by athletes, but it has not been established. So far, the veracity of their labeling in terms of the dosage and cause/effect relationship aimed at the consumer. The aim is to analyze the health claims and the dosage presented on the labeling of caffeine supplements and to evaluate if they follow the Eur...

Objective To analyse the information on health claims present in the labelling of creatine monohydrate (CM) products. Design A descriptive study of a selection of products marketed as CM, with health claims, and that met the inclusion/exclusion criteria, was conducted using the Amazon and Google Shopping websites. The adequacy and compliance of th...

Weightlifting is a discipline where technique and anthropometric characteristics are essential to achieve the best results in competitions. This study aims to analyse the relationships between body composition, limb length and barbell kinematics in the performance of weightlifters. It consists of an observational and descriptive study of 19 athlete...

Background: Nutritional software applications are tools for professional care. These applications allow the management of relevant information, facilitating and speeding up the diet treatment, and are designed for a general population with potential nutritional problems. The aim to establish the degree to which existing nutritional software in Span...

Introduction: there has been an increase in the number of endurance sports events during the last 20 years, as well as in the number of their participants. An adequate nutritional plan is essential for a satisfactory performance in this type of events, both in professional and amateur athletes. Objectives: the objective was to determine, evaluat...

Introduction: Introduction: among adolescent gymnasts some concern for body weight has been observed, with diets inadequate in energy and some nutrients in the search for maximum performance. Objective: the aim of this study was to evaluate the dietary-nutritional status, body composition, eating behavior, and perceived body image concerns of fema...

Powerlifting is a weight-class strength sport where achieving low fat mass (FM) and high fat-free mass (FFM) is desirable to improve performance. Recent studies have evaluated the nutritional considerations of different eating patterns, such as vegan diets (VD), in athlete populations. VD are a challenge for athletes who want to attain body composi...

Los deportistas de resistencia son aquellos que abarcan eventos competitivos y entrenamientos que tienen una duración superior a 30 minutos. Entre los factores limitantes del rendimiento que puede sufrir el deportista de resis- tencia cabe destacar los riesgos médico-nutricionales, como hipoglucemia, hiponatremia, deshidratación, golpe de calor, hi...

Food exchange lists have been widely used in dietary practice in health and disease situations, but there are still no exchange lists for sports foods. The aim of this study was to apply a previous published methodology to design food exchange lists to the development of a sports food exchange list, with sport products available in Spain. A cross-s...

Introduction:Tennis is characterized by a large number of competitions and little recovery time between them. Thus, tennis players and coaching staff have become interested in the role that nutrition can play in maximizing sports performance. The scientific literature does not have recent narrative and/or systematic reviews about to nutrition in te...

Food exchange lists have been widely used in dietary practice in health and disease situations, but there are still no exchange lists for sports foods. The aim of this study was to develop a sports foods exchange list based on previously published statistical criteria. A cross-sectional study of the nutritional composition of sports foods, regardin...

During the last few years, the numbers of competitors in endurance and ultra-endurance sports modalities have increased significantly. This type of competition is an extreme challenge for athletes. Therefore, they have an increased the risk of developing medical and nutritional problems. The aim of the work is to estimate the incidence of nutrition...

The different nature of each discipline in triathlon makes consensus difficult for optimal anthropometric factors for a high global performance, especially in young people. The aim was to analyse the correlation of the cineanthropometric factors with the performance observed in the different test. Young triathletes (44 male and 20 female) were subj...

Background and Objectives: Cerebral palsy (CP) is a set of permanent disorders that limit physical activity and increase the risk of developing other diseases, such as metabolic syndrome (MS). Adequate nutrition can contribute to the prevention of associated symptoms. The main objective of this study is to evaluate the nutritional status and the pr...

Strong evidence during the last few decades has highlighted the importance of nutrition for sport performance, the role of carbohydrates (CHO) being of special interest. Glycogen is currently not only considered an energy substrate but also a regulator of the signaling pathways that regulate exercise-induced adaptations. Thus, low or high CHO avail...

Background: Squash is one of the four most popular racquet sports, practiced by 20 million people worldwide. It is a sport that has been scarcely researched in the area of nutrition, and even less so regarding the dietary habits of its players. The objective of this work is to perform a descriptive and comparative analysis of dietary habits in squa...

Introducción: Se ha observado que el pico de crecimiento podría ser un período importante en el desarrollo de deportistas. Objetivo: Determinar el pico de crecimiento y el estado madurativo en jugadores jóvenes de fútbol y analizar medidas antropométricas relacionadas con el desarrollo corporal. Material y métodos. Cincuenta y ocho jugadores se cla...

El ultra-trail es un deporte de resistencia que involucra caminar y correr un recorrido con cambios extremos de elevación por pistas y caminos no asfaltados, senderos, barrancos, etc. La importancia de la planificación dietético-nutricional radica en la prevención de problemas nutricionales como la deshidratación o hiponatremia, problemas gastroint...

Introducción: La Red Valenciana de Universidades Públicas Saludables(RVUPS) se enmarca dentro de los entornos saludables de la Organización Mundial de la Salud. Su objetivo es conseguir universidades más saludables con diferentes líneas de actuación, destacando el papel de la actividad física(AF).Objetivo: Revisar las actividades desarrolladas sobr...

Los deportistas son los mayores consumidores de suple-mentos ergonutricionales, con el objetivo de mejorar el ren-dimiento deportivo, prolongar la resistencia o mejorar su recuperación. El consumo de estos suplementos puede va-riar entre las diferentes disciplinas deportivas, género, edad, período y objetivo del entrenamiento/competición, además, p...

The aim of the present study is to analyse nutritional supplements (NS) consumption by squash players of different levels (international vs. national). A total of 14 international players and 28 national ones answered a NS consumption frequency questionnaire that had been previously validated. A T-Student test was used for independent samples and a...

El presente artículo tiene como objetivoidentificar los factores y determinantes que inciden en la dislipidemia infantil y adolescente, así como las recomendaciones existentes sobre el diagnóstico, manejo y seguimiento clínico. Se realizó una revisión narrativa consultando en PubMed, Web of Science y SciELO de artículos publicados entre 2010-2017,...

The present article aims to identify the factors and determinants that affect childhood and adolescent dyslipidemia, as well as the existing recommendations on diagnosis, management and clinical follow-up. A narrative review was carried out in PubMed, Web of Science and SciELO of articles published between 2010-2017, in children population, includi...

In the present study, we examined whether particular urinary oxylipins (isoprostanes (IsoPs), leukotrienes (LTs), prostaglandins (PGs), and thromboxanes (TXs)) in 16 elite triathletes could alter during 145 days of training. Within this time span, 45 days were dedicated to examining the effects of the intake of a beverage rich in polyphenols (one s...

To date, the capability of altitude training to improve the performance and physiological parameters of athletes has been promoted, although the effect on clinical variables remains underreported. This work deals with the impact of 2-weeks training at moderate altitude (2320 m) relative to sea level (<400 m) on eight elite triathletes, under contro...

The consumption of nutritional ergogenic aids is conditioned by laws/regulations, but standards/regulations vary between countries. The aim of this review is to explore legislative documents that regulate the use of nutritional ergogenic aids intended for sportspeople in a Spanish/European framework. A narrative review has been developed from offic...

Introduction: The use of dietary supplements is increasing among athletes, year after year. Related to the high rates of use, unintentional doping occurs. Unintentional doping refers to positive anti-doping tests due to the use of any supplement containing unlisted substances banned by anti-doping regulations and organizations, such as the World A...

The aim of this study was to compare the energy, macronutrients and body composition of Elite (EFVPs) and Amateur (AFVPs) Female Volleyballers and to analyze their dietetic-nutritional intakes and habits with those recommended for athletes. Twelve EFVPs and twelve AFVPs were considered for this study. A protocol from the International Society of...

The branched chain amino acids leucine, isoleucine, and valine cannot be synthesized by the human body and therefore must be provided in the diet. These amino acids are metabolized primarily in skeletal muscle, which means that they are released into the liver and their ingestion causes a rapid increase in plasma levels. There are different studies...

Introducción: El tratamiento de la obesidad debería iniciarse dentro de la etapa escolar, centrándose en diferentes áreas de actuación, como la Educación Física. El objetivo de este estudio fue conocer el estado nutricional y el nivel de condición física en alumnos y alumnas de un centro escolar, así como la relación entre estos y la frecuencia de...

The effects of polyphenol-rich foods on the iron status of athletes, as well as the effect of physical training on the hormone hepcidin, implicated in iron metabolism, are not clear. We investigated the influence on iron metabolism of a long-term training intervention of 120 days, measuring the hepcidin concentration in the plasma of 16 elite triat...