Elsangedy, Hassan MohamedPessoa, Felipe de Azevedo2021-12-082021-12-082020-12-18PESSOA, Felipe de Azevedo. Influência da fadiga mental sobre as respostas afetivas e avaliações automáticas acerca do exercício físico: um estudo piloto. 2020. 63f. Dissertação (Mestrado em Educação Física) - Centro de Ciências da Saúde, Universidade Federal do Rio Grande do Norte, Natal, 2020.https://repositorio.ufrn.br/handle/123456789/45277Introduction: Studies show that people with positive automatic affective assessments (AAA) perform more physical exercise and physical activity in general. AAA are formed among others by the feeling of pleasure or displeasure (affection) felt in previous experiences. In general, the higher the subjective perception of effort (PSE), the lower the affect during exercise. It is known that the state of mental fatigue can accentuate PSE, however, the possible influence of mental fatigue on affect and consequently on automatic affective assessments has not been studied until now. Objective: To investigate the influence of mental fatigue on affect during physical exercise, and the effects of exercising in this mental state on automatic affective assessments about exercise. Methods: This is a study with an experimental design, crossed, randomized and balanced. The sample consisted of 12 young adults (6 women and 6 men; age: 24.9 ± 2.9; BMI: 24.2 ± 2.6) insufficiently physically active (did not reach the minimum ACSM recommendations for moderate exercise / in the last 3 months). The study was divided into 3 visits: (1) obtaining the resting heart rate, familiarization with the scales and performing the maximum effort test; (2 and 3) were randomized, where in one session the stroop test was applied for 30 minutes before performing 20 minutes of physical exercise (fixed speed and inclination corresponding to the speed and inclination that the volunteers reach 45% of resting heart rate in the maximum effort test) on the treadmill (experimental condition) and in the other session, the volunteers watched a documentary film also for 30 minutes before exercise (control condition). Friedman's test was used to compare affection between conditions before, during and after exercise. Two-way ANOVA for repeated measures was used to compare mental fatigue between conditions before and after the documentary film and stroop test, and to compare AAA between conditions at the beginning and at the end of the conditions. Soon after, Bonferroni's post hoc was applied to determine where significant differences occurred. The paired t-test was used to compare the mean PSE and cardiac HR during exercise between the two conditions. The level of significance was set at p <0.05. Results: The level of mental fatigue increased only in the experimental condition (p <0.01). In addition, the level of mental fatigue after the stroop test was higher than the level of fatigue after the documentary film (p = 0.04). The multiple comparisons test revealed that the mean of the affect during the second half of the exercise in the experimental condition was lower than the affect during the first half of the exercise in the control condition (p = 0.02). The mean PSE during exercise was significantly higher in the experimental condition (p = 0.04). There were no differences in AAA between conditions at any time. Conclusion: This study provided the first evidence showing that the state of mental fatigue decreases affect during exercise. However, this less pleasurable experience was not enough to reduce AAA acutely.Acesso AbertoExercício físicoFadiga mentalAssociação implícitaAffective-Reflective TheorymasterThesis