
Xian MayoRey Juan Carlos University | URJC · Centre for Sport Studies
Xian Mayo
PhD in Exercise Physiology
About
111
Publications
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Introduction
Skills and Expertise
Additional affiliations
September 2019 - present
January 2017 - September 2019
October 2011 - July 2016
Education
September 2016 - June 2017
University of A Coruña
Field of study
- Research Methods in Sport Science
September 2010 - June 2011
September 2005 - June 2010
Publications
Publications (111)
Introduction: This study examines the distribution of events and event records (EVRs) in elite judo competitions, encompassing both male and female categories. Sample: By analyzing data from the 2018, 2019, and 2021 World Championships, the study incorporates 6487 events (EVs) and 2340 contests classified by their last event (cEV). Results: The pre...
Background: Physical activity and sport (PAS) have been related to health and social benefits, but their monetary value remains unclear. This systematic review on the social return on investment of PAS aimed to find what are the social outcomes measured in previous PAS literature and how are these measured and valued. Methods: A systematic search w...
The main aim of this study was to ascertain whether the victory and defeat in the different types of the judo contest, in the elite male and female divisions, are associated to the occurrence of the penalties and scores of the first three events (changes in the scoreboard -either penalty or score-) of them. 2340 contests of the 2018, 2019 and 2021...
Background: Engagement in physical activity (PA) benefits physical and mental health as well as many other areas of society. In Europe however, 1/3 adults do not meet minimum PA recommendations. Social value, and its quantification through social return on investment (SROI) evidence, may be a useful framing to enhance PA promotion. This study aimed...
Background: Physical activity and sport (PAS) have been related to many health outcomes and social benefits. The main aim of this research is to build a Social Return on Investment (SROI) model of PAS based on experts’ opinion to clarify the domains of impact and how to measure and value them.
Methods and analysis: A Delphi method will be employed...
Introduction: Exercise interventions for breast cancer survivors have proved their potential to improve clinical, physical, and psychosocial outcomes. However, limited studies have explored exercise effects on autonomic dysfunction and the measurement of exercise tolerance and progression through daily heart rate variability (HRV).
Purpose: To anal...
Purpose
The current study aimed to analyze the changes in heart rate variability (HRV) 24h, 48h and 72h after exercise sessions in breast cancer survivors.
Methods
Sixteen survivors who had undergone chemotherapy and radiotherapy were included. Participants trained resistance and cardiovascular components 3 times per week. The intervention was sup...
INTRODUCTION:
Post-exercise hypotension (PEH) response after resistance exercise (RE) can be influenced by multiple factors
such as the calculation approach (1), the participants characteristics or the exercise protocols (1,2). Set
configuration has been shown to be a modulating factor for PEH following a single resistance exercise (3),
however thi...
For the last three years we have discussed a lot about becoming a proactive and responsible health and fitness industry, and we are building a collective effort integrating the resources, infrastructure, and intellectual capacity to do it right. As you will see in detail in this report, during the last 18 months we have developed a unique data infr...
Background
Breast cancer is a chronic disease with a large growth in its treatments, prognosis, improvements, side effects and rehabilitation therapies research. These advances have also highlighted the need to use physical exercise as a countermeasure to reduce the cardiotoxicity of pharmacological treatments, increase patients' strength and quali...
Sport and Physical Activity (PA) Special Eurobarometer surveys may inform of the physical inactivity (PIA) levels in the European Union (EU). This study aimed to analyse the PIA levels of EU adolescents (15–17 years) in four time points, according to gender. The data were from 2002, 2005, 20013, and 2017 Special Eurobarometers. Adolescents were cat...
The main aim of this study was to analyse the relationship between how contests end (scores or penalties), the temporal units and the competition rounds regarding when the contest end in 2018, 2019 and 2021 Judo World Championships. Methods: 2340 contests involving 2244 elite judo athletes (1343 men and 901 women) were analysed. Pearson’s Chi-squar...
Background
Protein-based multi-ingredient (MTN) supplements have been suggested as a safe and effective way of enhancing exercise outcomes. However, their effectiveness remains controversial when compared to isocaloric and single-nutrient supplements. This review aims to systematically summarise the current knowledge of multi-ingredient supplementa...
Introduction. During a resistance exercise session (RE), the set duration and the number of sets shape the blood pressure (BP) response to a greater extent than the load (Gjøvaag et al., 2016; Lamotte et al., 2005). Hence, set configuration (i.e., the repetitions performed with respect to the maximum feasible number in a set (Iglesias-Soler et al.,...
Background
The lack of systematic factors affecting physical inactivity (PIA) challenges policymakers to implement evidence-based solutions at a population level. The study utilizes the Eurobarometer to analyse PIA-modifiable variables.
Methods
Special Eurobarometer 412 physical activity (PA) data were analysed (n = 18 336), including 40 variables...
INTRODUCCIÓN
El entrenamiento de fuerza produce una pérdida transitoria del control autonómico cardiaco tras ejercicio (1), lo cual aumenta el riesgo de sufrir un evento cardiovascular (2). La configuración de la serie ha demostrado ser un parámetro de la carga que permite modular esta respuesta tras realizar un solo ejercicio (3). El objetivo de e...
We analyzed sports participation and physical activity reported data from Spain in 2021 to assess Social Value of Active Living in Spain applying Social Value Calculator developed for UK by 4Global from the SROI model of Sheffield Hallam University (Prof. Larissa Davies & team). Overall an amazing impact of 9,100 million euros returned to the Spani...
We aimed to determine the cardiovascular responses to two different set configuration resistance-exercise protocols during a knee extension composed of 40 repetitions with a 15RM load and a total resting time of 360 seconds. Twenty-four healthy sport science students randomly performed two sessions: (a) a long set configuration (LSC: 4 sets of 10 r...
The present study aimed (1) to propose an approach of observational analysis of the preceding standing judo (tachi-waza (TW)) context to a groundwork (ne-waza (NW)) grappling score (NWGS), and (2) to analyze the outcomes of applying such a model in high-level judoists. We conducted an observational analysis of 176 NW scoring actions of 794 combats...
Background: Cancer therapies have increased patient survival rates, but side effects such as cardiotoxicity and neurotoxicity can lead to autonomic nervous and cardiovascular system dysfunction. This would result in a decrease in parasympathetic activity and the enhancement of sympathetic activity. Heart rate variability (HRV), which reflects auton...
Cancer and associated medical treatments affect patients' health-related quality of life (HRQoL) by decreasing functional dimensions of physical, social, cognitive, and emotional well-being, while increasing short and late-term symptoms. Exercise, however, is demonstrated to be a useful therapy to improve cancer patients' and survivors’ HRQoL, yet...
Objectives
(1) To describe the physical activity (PA) levels of the members of a Spanish leisure centre operator according to age and gender; (2) to describe the differences in the three PA levels between the members of a Spanish leisure centre operator and the general Spanish population considering the PA Eurobarometer data according to their gend...
Background:
Public health organizations have been alerted to the high levels of sedentary behaviour (SB) among adolescents as well as to the health and social consequences of excess sedentary time. However, SB changes of the European Union (EU) adolescents over time have not been reported yet. This study aimed to identify SB of the EU adolescents...
Despite the well-established benefits of physical activity for both physical and psychological health, current inactivity prevalence continues to be particularly alarming among adolescents and youth. Equally of great concern is the existence of striking gender differences that represent a serious threat to reverse this problem. We aimed to analyze...
Cancer and associated medical treatments affect patients' health-related quality of life (HRQoL) by decreasing functional dimensions of physical, social, cognitive, and emotional well-being, while increasing short and late-term symptoms. Exercise, however, is demonstrated to be a useful therapy to improve cancer patients and survivors’ HRQoL, yet t...
The report, commissioned by EuropeActive's Research Centre THINK Active, included data from the SafeACTiVE survey platform and ukactive Research Institute collected over a 6-month period. Data collection methods and information used are consistent with findings from public health authorities.
Preworkout multi-ingredient admixtures are used to maximise exercise performance. The present double-blind, cross-over study compared the acute effects of ingesting a preworkout multi-ingredient (PREW) admixture vs. carbohydrate (CHO) over a week (microcycle) comprising three resistance training (RT) workouts alternated with two 30-min low-intensit...
The fitness sector is an essential player in the promotion of physical activity and healthy behaviour in Europe. However, the sector is confronted with numerous socio-demographic trends that will shape its ability to be financially successful and contribute to public health. The sector must understand current drivers of change and the skills its wo...
An updated analysis of the economic impact, SROI, healthcare prevention, contribution to WHO ODS and individual capital of sports, physical activity and exercise in Spain.
This study explored the changes in load-velocity relationship
of bench press and parallel squat exercises following two programs
differing in the set configuration. A randomized controlled
trial was carried out in a sample of 39 physically active
individuals. Participants were assigned to rest redistribution
set configuration, traditional set confi...
Background: Health organizations have been alerted to the high levels of sedentary behaviour (SB) among adolescents as well as to the health and social consequences of excess sedentary time. However, SB changes of European Union (EU) adolescents over time are yet to be reported. This study aimed to identify SB changes the EU adolescents (15-17 year...
Background
Despite the current debate about the effects of high intensity interval training (HIIT), HIIT elicits big morpho-physiological benefit on Metabolic Syndrome (MetS) treatment. However, no review or meta-analysis has compared the effects of HIIT to non-exercising controls in MetS variables. The aim of this study was to determine through a...
Improving cardiorespiratory fitness (CRFit) in cancer patients is crucial to increase survivorship, promote health and improve quality of life. High‐intensity training (HIT) has the potential to increase CRFit, perhaps better than other exercise modalities, but the extant evidence has yet to be fully explored. This systematic review and meta‐analys...
In December of 2019, there was an outbreak of a severe acute respiratory syndrome caused by the coronavirus 2 (SARS-CoV-2 or COVID-19) in China. The virus rapidly spread into the whole world causing an unprecedented pandemic and forcing governments to impose a global quarantine, entering an extreme unknown situation. The organizational consequences...
PurposeLeisure centres are one of the main places where people exercise. This study investigated the behaviour of these users for a year to analyse the plausible difference in behaviour between users dropping out and those who do not. In addition, it is also intended to identify the behavioural variables to establish the probability of dropping out...
Abstract Background Sedentary behaviour (SB) has been identified as an important mortality risk factor. Health organizations have recognised SB as a public health challenge with major health, social, and economic consequences. Researchers have alerted the need to develop specific strategies, to monitor, prevent, and reduce SB. However, there is no...
An updated review of the positive effects of physical activity and exercise reinforcing immune function considering a second wave of COVID19 across Europe.
Despite that the health benefits of physical activity (PA) are clear, during the last years, a noticeable plateau or slight increase in physical inactivity levels in Spanish adolescents and young adults has been reported. In addition, there seems to be a progressive reduction of the total PA performed with age in both adolescent and young women as...
PurposeWe aimed to analyse the acute effects of set configuration on cardiac parasympathetic modulation and blood pressure (BP) after a whole-body resistance training (RT) session.Methods
Thirty-two participants (23 men and 9 women) performed one control (CON) and two RT sessions differing in the set configuration but with the same intensity (15RM...
An active behavior is associated with a range of positive social outcomes. Accordingly, the Global Action Plan on physical activity 2018–2030 (World Health Organization, 2008) indicates that the guiding principle of the implementation of the policy action should be based on the active evaluation of impact.
PURPOSE: To analyze the 2017 economic and...
Multiple sclerosis (MS) is a chronic, immune-mediated and neurodegenerative disease of the central nervous system. Since signs and symptoms associated with MS extend to several dimensions, people with MS (PwMS) can experience symptoms at both physical and cognitive dimensions. Among them, perceived fatigue is one of the most disabling symptoms, aff...
A detailed analysis of the negative impact of COVID19 on the Sports Ecosystem in Spain, developed from SpainActive Foundation National Observatory at the Centre for Sports Studies, King Juan Carlos University. In partnership with ADESP and GO fit LAB.
The Health and Fitness Industry fails to invest sufficient resources in the development of the evidence-base supporting its capacity to deliver meaningful and sustainable public health outcomes. In addition, rarely are the wider economic and social impacts of sport explored or reported. This undermines the potential contribution that the sector can...
This randomised controlled study examined the force–velocit y relationship
changes (force and velocity axis intercepts, slope and
estimated maximum power) in response to 5-week training programmes
differing in the set configuration. For each session, the
traditional group performed 4 sets of 8 repetitions with 5 min of 15
rest between sets and exer...
Background:
The World Health Organization (WHO) considers physical inactivity (PIA) as a critical noncommunicable factor for disease and mortality, affecting more women than men. In 2013, the WHO set a 10% reduction of the PIA prevalence, with the goal to be reached by 2025. Changes in the 2013-2017 period of physical inactivity prevalence in the...
Aim
The main aim of this study was to analyse the differences between men and women regarding the fatigability, measured by the velocity loss, in two resistance training (RT) sessions differing in set configuration.
Methods
41 sport science students (29 males, 12 females) performed in a random order two RT sessions (knee extension- KE, leg curl, l...
Background:
Resistance training (RT) is currently recommended by health organizations as a significant component of a healthy fitness lifestyle and many prevention programs for several diseases1. Loading parameters can be manipulated in different ways, providing different effects. In order to prescribe RT with safety and maximal efficiency, the ef...
Introduction
Cross education (CE) consists in strength transfer from trained to non-untrained limb after an unilateral strength training program (3). Neural adaptations are suggested as responsible of CE phenomenon (4), and it seems that characteristics of load are determinant in order to obtain significant improvements. The aim of this study was t...
INTRODUCTION:
After a resistance training (RT) session, cardiac vagal modulation decreases what entails an increase of cardiovascular risk (1). Several factors affect to this decrease in the cardiac vagal control, such as the level of the anaerobic metabolism contribution (2). Set configuration refers to the repetitions performed with respect to th...
This study aimed to compare the goodness of fit and the reliability of different
regression models for fitting the force-velocity relationship (FV) of bench press (BP)
and squat (SQ). Additionally, the reliability of the position on FV of the velocity (V1RM)
and the force performed with the 1RM (F1RM) was explored. Nine rugby players and
12 judokas...
Judo coaches aim to develop left-handed techniques in right-handed judoka due to a potential frequency-dependent strategic advantage during competition. Thus, easily completed tasks are needed to track the progression of the lateral preference index (percentage as right-handed actions). Thirty naïve volunteers performed two tasks, an unopposed repe...
Reviews of physical inactivity (PIA) have not consistently identified systematic determinants influencing such behavior. Associations in subjective rather than objective measures may be important to consider when designing effective policy targeting PIA. PURPOSE: To analyze predictive variables that could influence PIA and how these factors may inf...
This study aimed to compare the strength gains in the nontrained arm after 2 independent unilateral training programs differing in the set configuration. Thirty-five subjects were randomly assigned to 3 groups: traditional training (TT; n = 12), cluster training (CT; n = 11), or control (CON; n = 12). The experimental groups performed a 5-week trai...
In judo, the attacking system is grounded on several determinants of the chances to throw. In our study, data regarding four determinants of the attacking system were collected in order to classify the standing scoring actions: the attacking type (direct/counter-attack), the throwing area (forward/backward), the technique’s category (based on motor...
Objective: To examine whether changes in cardiorespiratory fitness (CRF) following a physical activity (PA) intervention are associated with change in executive function (EF) and academic performance (AP) in children and adolescents. Design: Systematic review, meta-analysis, and meta-regression. Data sources: The databases Medline/PubMed, Science D...
INTRODUCTION
Acute cardiovascular effects of resistance training (RT) can be influenced by load parameters and their modulation. Many studies have investigated about these effects but most analyzed the effect of a single exercise. The aim of this study was to compare the hypotension effect and baroreflex sensitivity (BRS response to RT sessions wit...
INTRODUCCIÓN La transferencia de fuerza del miembro entrenado al no entrenado es conocida como cross education (1). Este fenómeno se produce tras entrenamientos unilaterales realizados con una intensidad que iguale o supere el 60% del 1RM (1 repetición máxima) según la bibliografía actual (2). La presente investigación se realizó con el objetivo de...
The main aim of this study was to explore the variability in the 10 load-velocity relationship through the use of multilevel mixed regression models. The relationship between relative load (% of one repetition maximum: %1RM) and velocity was obtained in a sample of high-level judokas and rugby players (8 women and 13 men) for the bench press (BP) a...
Abstract Background Physical inactivity (PIA) is a mortality risk factor defined as performing lower levels of physical activity than recommended by the World Health Organization (WHO). After 2002, the WHO released the WHA55.23 Resolution and the Global Strategy which produced several changes in policymaking, but with no subsequent analyses of the...
Background:
The aim of this study was to evaluate autonomic modulation, blood pressure variability and baroreflex sensitivity (BRS) responses to an acute bout of free-weight resistance exercise in resistance-trained men (n = 14) and women (n = 13).
Methods:
Participants underwent both an acute bout of resistance exercise consisting of 3 sets of...
Introduction:
When multi-joint exercises are considered the inverse relationship between muscle force and shortening velocity (FV) has been typically fitted by linear regression models. Previous studies have analysed de feasibility of the variables calculated from linear models but not for parameters calculated from non-linear models.
Methods:...
We determined the effects of an acute bout of free-weight resistance exercise (ARE) on cardiovascular hemodynamics and endothelial function in resistance-trained individuals. Nineteen young, healthy, resistance-trained individuals performed two randomized sessions consisting of ARE or a quiet control (CON). The ARE consisted of three sets of 10 rep...