Programa de Pós-Graduação em Ciências do Movimento Humano - PPGCMH/ICS
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Item Acesso aberto (Open Access) A fadiga mental altera a percepção subjetiva de esforço, mas não prejudica o tempo de resposta de árbitros de futebol durante uma tarefa física simulada(Universidade Federal do Pará, 2023-04-27) LIMA, Cássio Zacarias Lopes de; PENNA, Eduardo Macedo; http://lattes.cnpq.br/3746450308327976; https://orcid.org/0000-0003-0058-7967Mental fatigue (MF) is a psychobiological state caused by prolonged and demanding cognitive activity, characterized by feelings of tiredness and lack of energy induced by periods of demanding cognitive activity. MF negatively affects decision-making in sports, as these effects have been associated with a reduction in the performance of executive functions, which are conceptualized as a set of cognitive processes used to plan and carry out actions to achieve a goal. In this context, it is known that the performance of executive functions has been strongly associated with the decision-making of soccer referees, so understanding whether MF reduces the cognitive performance of referees is relevant. Thus, the aim of this study was to investigate the effects of mental fatigue and simulated physical task on soccer referees, on response time in a test that evaluates executive functions, and subjective perception of effort. Twelve professional regional soccer referees participated in the study, and made three visits to the laboratory, the first visit for evaluations and familiarization with the experimental protocols, and signing of the Informed Consent Form (ICF). In the 2nd and 3rd visits, the participants were exposed to two experimental conditions, mental fatigue or control, in a cross-over and randomized way. Therefore, in the MF condition, referees performed the Stroop Test and in the control condition, they watched an emotionally neutral video, and after these conditions, they were required to perform executive function tests simultaneously with the simulated physical task for soccer referees. The results revealed that there was no effect of mental fatigue on the performance of executive functions (P = 0.395). However, higher perceptions of effort were found in the mental fatigue condition (P = 0.018). In this sense, the present study shows that although mental fatigue alters the subjective perception of effort, there was no impairment in the executive functions performance of soccer referees.Item Acesso aberto (Open Access) Síndrome de burnout, estratégias de coping e classe funcional em atletas de basquete em cadeira de rodas(Universidade Federal do Pará, 2021-12-16) FERREIRA, Rodrigo Weyll; PIRES, Daniel Alvarez; http://lattes.cnpq.br/4487383675643868; https://orcid.org/0000-0003-2163-5606Wheelchair basketball athletes suffer from stressors such as inadequate preparation for competition, functional classification, and performance concerns. Therefore, when stress becomes chronic, it can result in burnout, defined as a syndrome with three dimensions: physical and emotional exhaustion, reduced sense of sporting achievement, and sporting devaluation. However, burnout can be prevented or mitigated with the use of coping strategies, which are continuous efforts of thought and action to manage situations evaluated as stressful. This dissertation was composed of two studies. The first is a systematic review study aimed at synthesizing the existing literature on burnout and coping in athletes with disabilities and identifying the psychological and physical variables associated with burnout and coping in this population. Seven articles with a predominance of cross-sectional design were selected. It is concluded that the scientific production in relation to coping and burnout in athletes with disabilities is under construction due to the few studies, mainly on burnout, found in this review. Coping is associated with self-determined motivation and functional class, and burnout is associated with socially prescribed perfectionism and sleep. The second consists of an original study with the objective of identifying the most perceived dimensions of burnout and coping strategies, analyzing the perception of burnout and coping according to the placement in the championship, and relating the functional class with the dimensions of burnout and coping strategies. Seventy-one wheelchair basketball athletes completed the Athlete Burnout Questionnaire and Athletic Coping Skills Inventory during the competitive phase. The results showed that, in relation to the burnout dimensions, the reduced sense of sporting achievement was more perceived than physical and emotional exhaustion, while the worry-free coping strategy was the least perceived. No differences were observed in the perception of burnout or coping in relation to the placement of the team in the final classification of the competition. In addition, there was no relationship between functional class and burnout or coping. We conclude that team performance does not interfere with the perception of burnout or coping, and the functional class is not a key factor for burnout or coping.Item Acesso aberto (Open Access) Treinamento resistido de dose mínima aumenta força sem alterar a modulação autonômica cardíaca, função hemodinâmica e capacidade funcional de mulheres menopáusicas: um ensaio clínico randomizado(Universidade Federal do Pará, 2023-04-28) DIAS, Rayra Khalinka Neves; COSWIG, Victor Silveira; http://lattes.cnpq.br/0097939661129545; https://orcid.org/0000-0001-5461-7119Menopausal women have disorders in cardiac autonomic control that add to other deleterious effects such as functional and muscle decline. The aim of this study is to investigate the effects of minimal dose resistance training (RT) on cardiac autonomic modulation, hemodynamic parameters, strength and functional capacity in menopausal women. This study is a randomized clinical trial, submitted to the Brazilian Registry of Clinical Trials under the code RBR-2p4gpvk and approved by the Research Ethics Committee of the Institute of Health Sciences, Federal University of Pará (CEP–ICS/UFPA), under the opinion number 4,922,776/2021. The present investigation analyzed 29 women who were randomized to the training group (TG: 63,1±9,0 years) and control group (CG: 59,6±7,4 years). The TG performed the minimum dose RT twice a week for a period of four weeks. Assessments were performed before and after the protocol period, with anthropometric measurements, hemodynamic parameters (heart rate and blood pressure), autonomic modulation (RMSSD, SDNN, PNN50, HF, LF, LF/HF), functional capacity (6 min walk test and Short Physical Performance Battery), and strength with the test of 1 repetition maximum (1 RM). Two-way ANOVA (group*time) was performed with repeated measures with bonferroni post-hoc test and significance level p< 0.05. The results revealed that there was a group*moment interaction only in the autonomic index LnRMSSD (F= 1,01; ω 2= 0,055; p= 0,02), but the analysis of the main effects did not reveal differences between groups (d= 0.10; p= 0.70) and moments (d= 0.13; p=0.64). In addition, there was a significant interaction for the 1 RM bench press test (F= 10.30; ω2= 0.014; p< 0.01), but with no main group effect (d= 0.18; p= 0.62 ) and with moment main effect (d= 0.23; p< 0.01). In comparisons between moments, with significant improvements in the 1 RM seated row (F= 11,64; ω 2= 0,059; p< 0,01), 1RM bench press (F= 8,73; ω 2= 0,011; p< 0,01), 1 RM leg press (F= 19,77; ω 2= 0,095; p< 0,01). In this sense, minimal dose RT showed benefits in muscle strength, but it was not enough to produce autonomic, hemodynamic and functional adaptations in menopausal women.