Luis Rama

Luis Rama
University of Coimbra | UC · Faculty of Sport Science and Physical Education

PhD

Publications

Publications (93)
Article
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The aim of this study was to analyse and compare propulsive forces, relative force production and symmetry between genders during water fitness exercises. Eighteen participants (women, n=9; age: 20.67 ± 0.87 years; body mass: 58.18 ± 4.97 kg; height: 159.19 ± 5.85 cm; and men, n=9; age: 22.11 ± 1.76 years; body mass: 72.93 ± 7.00 kg; height: 170.83...
Article
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Background Non-communicable diseases are a leading cause of health loss worldwide, in part due to unhealthy lifestyles. Metabolic-based diseases are rising with an unhealthy body-mass index (BMI) in rural areas as the main risk factor in adults, which may be amplified by wider determinants of health. Changes in rural environments reflect the need o...
Article
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This study aimed to develop a predictive explanatory model for the 1,000-m time-trial (TT) performance in young national-level kayakers, from biomechanical and physiological parameters assessed in a maximal graded exercise test (GXT). Twelve young male flat-water kayakers (age 16.1 ± 1.1 years) participated in the study. The design consisted of 2 e...
Preprint
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Background: Non-communicable diseases (NCDs) are a leading cause of health loss worldwide, in part due to unhealthy lifestyles. Metabolic-based diseases are rising with an unhealthy body-mass index (BMI) in rural areas as the main risk factor in adults. Health loss risks in rural areas may be amplified by wider determinants such as socio-demography...
Article
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Physical Education, when taught in an integrating and facilitating way of learning, allows students to acquire specific skills (eg., interpersonal relationship). Thus, we aim to: a) characterize the well-being and lifestyle of young teenagers in 9th grade class; b) characterize the interpersonal relationship, both in terms of acceptance and rejecti...
Article
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Background: the aim of this study was to analyze the chronobiology influence on the mechanical, kinematic, and physiological variables in a mountain bike (MTB) time trial. Methods: 16 mountain bike (MTB) male athletes volunteered to participate. Their characteristics were as follows: body mass 70.2 ± 5.4 kg, stature 172.7 ± 4.0 cm, body fat 9.8...
Article
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Purpose Breath-by-breath energy expenditure during open water swimming has not yet been explored in an ecological environment. This study aimed to investigate and compare energetics and kinematics of 5 km swimming, in both swimming pool and open water conditions. Methods Through four independent studies, oxygen uptake (VO2) kinetics, heart rate...
Article
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Background and objectives: Athletes from combat sports are grouped into a series of weight categories that are intended to promote fair competition. Differences in performance are partly attributable to differences in body size. Consequently, ratio standards in which a performance variable is simply divided by an anthropometric characteristic such...
Article
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This study aimed to evaluate the degree to which transcutaneous electrical stimulation (ES) enhanced recovery following a simulated water rescue. Twenty-six lifeguards participated in this study. The rescue consisted of swimming 100 m with fins and rescue-tube: 50 m swim approach and 50 m tow-in a simulated victim. Blood lactate clearance, rated pe...
Article
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This study examined the effect of a competitive season on salivary responses [cortisol (sC), testosterone (sT), Testosterone/Cortisol ratio (sT/C), Immunoglobulin A (sIgA), sIgA secretion rate (srIgA), alpha-amylase (sAA)] and upper respiratory symptoms (URS) occurrence in three teams of male soccer players (Under-15, Under-17 and Under-19 yrs.). T...
Conference Paper
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Asymmetries can lead to muscular imbalances or deficits in strength during some activities. However, little is known while performing water fitness exercises. This study aimed to assess the upper-limbs’ asymmetry in water fitness exercises.
Article
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...
Article
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OBJECTIVE The current study aimed to examine the body composition of adult male ultra-trail runners (UTR) according to their level of participation (regional UTR-R, vs. national UTR-N). METHODS The sample was composed of 44 adult male UTR (aged 36.5±7.2 years; UTR-R: n=25; UTR-N: n=19). Body composition was assessed by air displacement plethysmogr...
Article
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The evaluation of propulsive forces in water allows the selection of the most appropriate strategies to develop strength during water fitness sessions. The aim of this study was threefold: (i) to analyze the rate of force production; (ii) to analyze the rate of force variation; and (iii) to compare limbs' symmetry in two water fitness exercises. Tw...
Conference Paper
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The aim of this study was to analyse and compare the propulsive force between two basic head-out water exercises. Twenty-nine young healthy participants (age: 21.7 ± 1.9 years-old, body mass: 68.5 ± 10.8 kg, height: 168.2 ± 9.6 cm) performed an incremental protocol for each exercise (horizontal adduction and rocking horse) from 105 beats per minute...
Article
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Purpose: Evidence indicates that muscle injury caused by exercise can lead to functional, biochemical, and clinical damage. These outcomes encompass an intrinsic potential to understand the real magnitude of interpretation of classic signs in sport environments and to monitor athletes, contributing to specific actions. However, little or no researc...
Article
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The prevalence of age-related non-communicable chronic diseases has increased worldwide, being the leading causes of morbidity and death in many world regions, including in Europe. Innovative models and strategies focused on preventive care, including early identification of risk factors underlying disease onset and progression, and proper modifica...
Article
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Training camps are typical in elite Canoeing preparation, during which, the care to assure adaptation to avoid undesired fatigue is not always present. This study aimed identifying a specific sex response in perceived training loads, recovery and stress balance, and cardiac autonomic responses. Twenty-one elite athletes (11 males and 10 females) of...
Poster
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Objectives. - This study aimed to develop a predictive explanatory model for the 1000-m time-trial (TT) performance in young national-level kayakers, from biomechanical and physiological parameters assessed in a maximal graded exercise test (GXT). Equipment and methods. - Twelve young male flat-water kayakers (age 16.1 ± 1.1 years) participated in...
Article
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The purpose of this study was to investigate the impact of a training season (approximately 7 months) on physiological and salivary immune‐endocrine markers in master athletes. Nine male master athletes were evaluated at the beginning of the season (M1) and a week after the main official competition at the end of the sports season (M2). The control...
Article
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Background: Exploring the osteogenic effect of different bone-loading sports is particular relevant to understand the interaction between skeletal muscle and bone health during growth. This study aimed to compare total and regional bone and soft-tissue composition between female adolescent swimmers (n=20, 15.71±0.93 years) and volleyball players (...
Article
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Introduction: The popularity of ultra-endurance events is increasing worldwide. However, information about hematological parameters during repeated bouts of long-duration running, such as stages during a multi-stage ultramarathon (MSUM) is scarce. Objective: The purpose of the study was to monitor daily hematologic assessment in a 230-km multist...
Article
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Background/purpose: Ageing has profound impact on the immune system, mainly on T-cells. However, it has been suggested that chronic exercise may delay immunosenescence. Master athletes represent an interesting sub-demographic group to test this theory since they maintain a high training frequency and load throughout life. The purpose of this study...
Conference Paper
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In compliance with the European recommendations, , the Lifeguard (LG) became a regulated professional activity in Portugal in 2012, demanding proper physical and psychological preparation. This study aims to evaluate and monitor the skill level of Portuguese LG on performance a rescue in ocean beaches. Drowning literature supports, depending on sev...
Article
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Purpose: The purpose of this study was to quantify and characterize peripheral blood regulatory T cells (Tregs), as well as the IL-10 plasma concentration, in Masters athletes at rest and after an acute exhaustive exercise test. Methods: Eighteen Masters athletes (self-reported training: 24.6 ± 1.83 years; 10.27 ± 0.24 months and 5.45 ± 0.42 h/w...
Article
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BACKGROUND: The purpose of this study was to investigate the differences in cytokines levels in the peripheral blood of kayakers at different moments of training. MATERIALS AND METHODS: The sample comprised 12 elite kayakers preparing for the Beijing Olympic Games. Blood samples were collected at different time points of the training season: basel...
Article
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Objective: The idea that different sports and physical training type results in different cardiac adaptations has been widely accepted. However, this remodelling process among different sport modalities is still not fully understood. Thus, the current study aims to investigate the heart morphology variation associated with a set of different modali...
Article
The purpose of this study was to investigate the hematological and inflammatory responses to 4 maximal high-intensity protocols, considering energy expenditure in each test. 9 healthy volunteers performed 4 high-intensity exercise tests of short [Wingate (WANT); Repeated-sprints (RSA)] and long durations [Continuous VO2 test (VCONT); intermittent V...
Conference Paper
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The European Resuscitation Council Guidelines indicates that CPR providers should ensure chest compression of adequate depth (5-6cm) with 100-120 compressions min-1 , in a cycle of compressions/inflations of 30:2. The objective of this study was to monitor the impact over the CPR quality, applied by lifeguards(LG), after a simulated rescue. Method...
Article
This study examined the changes in resting hematological variables in ultra-endurance runners throughout a multi-stage ultra-marathon competition, and compared athletes that completed all stages with those that failed to complete at least one stage within the cut-off time of competition. 19 ultra-endurance runners competing in a 230 km multi-stage...
Research Proposal
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Physical activity in elders has been shown to have positive effects on a plethora of chronic diseases and to improve immunity, mental health and cognition. Chronic stress has also been shown to have immuno-suppressive effects and to accelerate immunosenescence. Exercise could be a significant factor in ameliorating the deleterious effects of chroni...
Article
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Background: Stretching is often part of the warm-up routine prior to athletic participation; however, controversial evidences exists on the stretching effects on countermovement jump (CMJ) and sprint performance. Additionally, analysis of variability is useful for monitoring players, analyzing factors that could affect the performance, and guide a...
Article
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INTRODUÇÃO: A natação tem sido recomendada como tipo de atividade física para a prevenção, tratamento e controle da hipertensão arterial. OBJETIVO: Analisar os efeitos da prática regular de natação sobre a pressão arterial de adultos pré-hipertensos. MÉTODOS: A amostra foi composta por 36 homens pré-hipertensos divididos em dois grupos: Experimen...
Article
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This study aimed at examining the associations between weight status, body fat mass, and heart rate variability in prepubescent children, adjusting for physical activity levels. A cross-sectional investigation in which a total of 50 Caucasian pre-pubertal children (21 normal weight; 8 overweight; 21 obese), aged 6-10 years (8.33 ± 1.14), including...
Article
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Exertional-heat stress has the potential to disturb intestinal integrity, leading to enhanced permeability of enteric pathogenic micro-organisms and associated clinical manifestations. The study aimed to determine the circulatory endotoxin concentration and cytokine profile of ultra-endurance runners (UER, n=19) and a control group (CON, n=12) duri...
Article
Este artigo teve como objectivo principal apresentar algumas orientações técnicas para a gestão de piscinas municipais. Nesta base, enquadramos os recursos humanos envolvidos neste tipo de equipamentos e as actividades ministradas em meio aquático. Além disso, descrevemos a manutenção, segurança ocupacional e os princípios normativos que estão subj...
Conference Paper
Prolonged strenuous exercise has been associated with impaired immune function. The objective of this study was to investigate the differences in the peripheral blood cell counts and cytokynes in kayakers at different moments of training. The sample consisted of eight elite male kayakers, 22± 4 years old, 77.2 kg±6.7 body mass and 177.5±5.6 cm stat...
Article
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High intensity training regimens appear to put athletes at a higher risk of illness. As these have been linked to alterations in the proportions of differentiated T cells, how training load affects these populations could have important implications for athlete susceptibility to disease. This study examined the effect of a winter training season on...
Article
Prolonged strenuous exercise is commonly reported to depress oral-respiratory immune status and increase the incidence of upper respiratory symptoms. This novel investigation aimed to determine the salivary antimicrobial responses and hydration status of ultraendurance runners (n = 23) during a 230-km multistage ultramarathon conducted in hot ambie...
Conference Paper
Purpose: The oxygen uptake efficiency slope (OUES) is a useful index of cardiorespiratory functional reserve (Baba et al, J Am Coll Cardiol: 1996). The index is influenced by body size and its partition is commonly achieved via ratio standards.We examined the value of ratio standards and allometric scaling approaches to account sizes influence on O...
Article
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The objective of this study was to evaluate the influence of the active static stretching on the sports performance in power and speed activities as “counter movement jump” (CMJ) and “20 meters sprint”. Twenty two males (24.0 ±6.2 years old), rugby7 and handball players, were randomly separated into two groups (A and B) and submitted to two protoco...
Article
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Natural killer cells (NK) cells have an important role in innate immunity with both their number and activity in peripheral blood undergoing large fluctuations during and after exercise. The purpose of this literature review was to identify the effect of training on natural killer cells (NK). Were used the electronic databases National Library of M...
Article
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Background: Anecdotal evidence suggests ultra-runners may not be consuming sufficient water through foods and fluids to maintenance euhydration, and present sub-optimal sodium intakes, throughout multi-stage ultra-marathon (MSUM) competitions in the heat. Subsequently, the aims were primarily to assess water and sodium intake habits of recreationa...
Article
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Regular moderate exercise has been shown to have anti-inflammatory effects that help prevent several chronic diseases. However, the effects of chronic training an elite athletes have not been the focus of much research. This study aimed to determine whether there were differences in cytokine levels (IL-1 β , IL-1ra, IL-6, IL-10, IL-18, IFN- γ , and...
Article
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The relationship between exercise and susceptibility to infections has raised the interest of researchers and several models have been proposed and discussed. Several models have been created aiming to explain the relationship between exercise and the increased risk of upper respiratory tract infection (URTI). The objective of this review was to pr...
Article
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The theory of deliberate practice postulates that experts are always made, not born. This theory translated to the youth-sport domain means that if athletes want to be high-level performers, they need to deliberately engage in practice during the specialization years, spending time wisely and always focusing on tasks that challenge current performa...
Article
Immune changes and increased susceptibility to infection are often reported in elite athletes. Infectious episodes can often impair training and performance with consequences for health and sporting success. This study monitored the occurrence of episodes of upper respiratory symptoms (URS) and the variation in circulating NK cells, CD56(bright) an...