Background: Stress Generated by Remote Exams During the Covid-19 Crisis and its Relationship to Physical Activity: A Cross-Sectional Study Among Medicine Students. The study aimed to verify the autonomic alterations that occur in medical students in remote exams during the Covid-19 crisis and their relationship with physical activity. Study conducted with 22 medical students (9 women and 13 men) with a mean age of 19±1.5 years (18-24 years). The dependent variables were: changes in HRV. The independent variables of the study were physical activity (number of steps/day), age and sex. The results showed that the evaluation did not generate changes in the measured autonomic indicators, indicating that this model minimizes stress. It was evident that the greater the number of steps, the lower the stress index (r=-0.920). The other autonomic variables did not show a significant correlation with the number of steps. The remote assessment model used in the medical course during the Covid-19 crisis did not generate autonomic alterations indicative of stress in medical students. However, there was a low level of physical activity in this sample through the number of daily steps, on the other hand, those who had a higher number of steps had a lower stress rate.
Background: Futsal is one of the most popular sport in Brazil with millions of players worldwide. It is characterized by intermittent stimuli of high intensity anaerobic actions. Recently, studies have shown that imagery resistance training (IRT), like conventional strength training, can increase muscle strength, making it reasonable to think that this effect can also be transferred to muscle power. Purposes: we aimed to verify the acute responses of IRT on muscle power in teenage Futsal players. Methods: fifteen Futsal athletes were enrolled and underwent three visits to the laboratory: 1) familiarization with the resistance exercise they would undergo; 2) one them for vertical jump test after the IRT session and the other one for control session, without any intervention before vertical jump test. Sessions 2 and 3 being applied in random order. Results: the results indicate that acute IRT improved muscle performance, since it produced higher power output [3134.5 Watts (2744 - 3796.3)] than control session [2952.4 Watts (2637.55 - 3433.45)] (Z=3.4078; p=0.0007). In addition, all participants in IRT group showed some improvement after the IRT session. Conclusions: a single imagery resistance exercise session can increase acute muscle power output in teenage Futsal athletes.
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