Publications by authors named "Luis Calmeiro"

Introduction: Currently the use of prohibited performance-enhancing substances (PES) in fitness and gym settings is a public health concern as adverse health consequences are emerging. Understanding the characteristics of gym-goers who do not use these substances could lead to an important complement to the ongoing research about risk factors for PES use. The aim of this study was to identify the profile of PES non-use in gym-goers.

View Article and Find Full Text PDF

Introduction: Implementing a self-refereeing system presents a unique challenge in sports education, particularly in academic and training settings where officiated sports prevail. However, Ultimate Frisbee stands out by entrusting players with both athlete and referee roles, introducing distinctive ethical complexities. This manuscript is intended to evaluate ethical behavior and self-control within the Spirit of the Game (SOTG) scoring system in Elite Ultimate.

View Article and Find Full Text PDF

Context: Despite the availability of specialized assessment tools, psychological readiness is usually not considered when deciding to return to sport (RTS) after sport injury. Reinjury anxiety, self-confidence, and functional attention may be associated with sport reinjury, making it important to evaluate these factors before RTS.

Objective: To predict lower extremity reinjury in soccer players using self-confidence, functional attention, and reinjury anxiety as predictive variables.

View Article and Find Full Text PDF

Background: The health benefits associated with recreational running are challenged by the occurrence of running-related injuries (RRIs). Effective preventive measures require knowledge of sport injury etiology. Psychological factors such as perfectionism, mental toughness, and passion are believed to predispose to sports injury by influencing training behaviors, motivation to run, and suppression of feelings of fatigue and pain.

View Article and Find Full Text PDF

In Ultimate Frisbee, players are responsible for administering and reinforcing adherence to the rules of the game. As a self-refereed sport, UF relies upon the Spirit of the Game (SOTG). This study aimed to profile the experience, to ascertain the training history of the sport, the participation and goal orientations of international Ultimate Frisbee players in the European Beach Ultimate Championship, and to evaluate the contribution of these variables in a discriminant function to classify players according to SOTG level and competitive level.

View Article and Find Full Text PDF

Currently, the main public health concern worldwide is the COVID-19 pandemic, caused by SARS-CoV-2, which was recently discovered and described. Due to its high pathogenicity and infectiousness, it is necessary to determine the risk healthcare professionals face every day while dealing with infected patients and contaminated biological samples. The purpose of this study was to assess Portuguese Biomedical Scientists' risk of COVID-19 exposure and related stress appraisals.

View Article and Find Full Text PDF

Context: Considering current models that highlight the role of psychological components in pain management, mindfulness practice may be an effective strategy in the management of pain.

Objective: To examine the effects of adding an 8-week mindfulness program to exercise therapy on the perceptions of pain severity, knee function, fear of movement, and pain catastrophizing of female recreational runners with patellofemoral pain (PFP).

Design: Randomized controlled clinical trial.

View Article and Find Full Text PDF

Sport participation has been advocated as a strategy to improve adolescents' mental health. However, how these variables evolve during the adolescent years is uncertain. The objective of the present work was to examine the longitudinal associations of sports participation and depressive symptoms in adolescents.

View Article and Find Full Text PDF

The purpose of this investigation was to examine the factorial validity and measurement invariance of the short version of the Leadership Scale for Sports (LSS; Chelladurai & Saleh, 1980): coaches' perceptions of their own behavior, athletes' preferences and athletes' perceptions of their coaches' behavior. This validation will allow researchers to minimize time demands on participants. Three independent samples of athletes ( = 373;  = 817;  = 246) and two samples of coaches ( = 115;  = 351) were studied to examine the factorial validity and measurement invariance of the 25-item version of the LSS (LSS-25; Chiu et al.

View Article and Find Full Text PDF

Background: Recently, Mullen et al. (2011) presented an 8-item version of the Physical Activity Enjoyment Scale (PACES) that provides a valid instrument for assessing enjoyment in physical activity. The present paper investigated the psychometric properties of a Portuguese adaptation of PACES.

View Article and Find Full Text PDF

The authors tested the effectiveness of a mindfulness-based program in reducing sport-injury incidence. A total of 168 young male elite soccer players were randomly assigned to mindfulness and control groups. The mindfulness group consisted of seven sessions based on the mindfulness-acceptance-commitment approach, while the control group consisted of seven presentations on sport-injury psychology.

View Article and Find Full Text PDF

The purpose of this study is to examine the determinants of the intentions to use prohibited performance-enhancing substances (PES) and to test the Theory of Planned Behavior's usefulness in predicting self-reported PES use in both genders. A convenience sample of Portuguese gym users ( = 453) completed an anonymous web-based survey. Structural equation modeling, multigroup analysis, and -test with the Welch correction for heterokedastic variances were used.

View Article and Find Full Text PDF

Drawing from the model of parental involvement in sport, the overall purpose was to examine the associations of perceptions of parenting practices (encouragement, reinforcement, instruction, and role modeling) and athletes' psychological variables (self-efficacy, social self-efficacy, self-regulation, and intrinsic motivation) of elite and sub-elite youth athletes. Participants were elite ( = 210) and sub-elite ( = 635) athletes aged between 14 and 18 years ( = 16.58, = 1.

View Article and Find Full Text PDF

The aim of this study is to explore the relationship between adolescents' life satisfaction and individual and social health assets. A nationally representative sample of 3,494 Portuguese adolescents (mean age = 14.94 ± 1.

View Article and Find Full Text PDF

The overall purpose of this study was to examine the mediating effects of parents' coping strategies on the relationship between parents' emotional intelligence and sideline verbal behaviors during their children's soccer games. Participants were 232 parents (120 mothers and 110 fathers) of youth soccer players age 9-13 years. Observations in situ were carried out at 30 soccer games during a soccer tournament.

View Article and Find Full Text PDF

In this study, we investigated the relationship between screen-based behaviours, physical activity, and health complaints (headaches, feeling low, irritability, and nervousness). Screen-based behaviour included TV viewing, computer use, and time spent playing video games. Data were collected from 4462 Portuguese adolescents (2394 girls) aged 11-16 years.

View Article and Find Full Text PDF

Grounded in Lazarus's (1991, 1999, 2000) cognitive-motivational-relational theory of emotions, we tested a model of achievement goals, stress appraisals, emotions, and coping. We predicted that precompetitive achievement goals would be associated with appraisals, appraisals with emotions, and emotions with coping in our model. The mediating effects of emotions among the overall sample of 827 athletes and two stratified random subsamples were also explored.

View Article and Find Full Text PDF

The purpose of this study was to compare moment-to-moment appraisals and coping strategies of 4 non-elite and 2 elite male trap shooters during competitions and in particular during periods of competition perceived as critical to performance. Appraisals and coping patterns of trap shooters were captured via verbal reports of thinking provided between sets of shots during major competitions. Verbal reports were coded according to an appraisal and coping typology.

View Article and Find Full Text PDF

A unified conceptual framework, which integrates the structural components of human performance, such as emotional processes (i.e., feelings, mood), cognitive processes and structures (e.

View Article and Find Full Text PDF

The advantages of physical activity are widely recognised from both a physiological and a psychological perspective. Evidence seems to demonstrate that physical activity is associated with decreases in depression and anxiety in clinical and non-clinical populations. There are a number of physiological, biochemical and psychological explanations which should be considered to understand the psychological effects of exercise.

View Article and Find Full Text PDF