Purpose -Heart rate variability (HRV) has been studied at rest as a non-invasive tool for the assessment of cardiac autonomic control and, its attenuation is related to cardiovascular risk. However, during exercise, when important neural changes take place, HRV behaviour is not well established. The aim of this investigation was to study the heart rate (HR) and HRV responses during the different metabolic phases of maximal graded exercise in young men.Methods -Seventeen men (age 28±6 years) were submitted to a graded cardiopulmonary exercise test in a cycloergometer (30W/3min). To study HR and HRV (standard-deviation)
Métodos -Dezessete homens (28±6 anos) realizaram teste ergoespirométrico máximo em cicloergômetro (30W/ 3min), determinando-se a FC e a VFC (desvio-padrão) através da onda eletrocardiográfica, amplificada e gravada batimento a batimento em computador, numa freqüên-cia da 125Hz (AT/Codas).Resultados [1][2][3][4] . Estudos recentes 5-8 têm demonstrado que a diminuição da VFC está relacionada a um maior índice de morbidade e mortalidade cardiovascular. Por essas razões, muitos autores têm se ocupado em utilizar manobras respiratórias 9 , mudanças de posição 10,11 e bloqueios farmacológicos do sistemas nervosos simpático e parassimpático 10 , na tentativa de investigar a VFC.
This study aimed to compare the practice of physical activity in groups of people with chronic diseases with and without medication, before and during the pandemic. 298 Brazilian individuals with chronic non-communicable diseases such as cardiovascular, metabolic / endocrine, respiratory, orthopedic, gastrointestinal diseases, anxiety and depression were separated into two groups: with and without medication. A questionnaire with 14 questions was applied, tracing the behavioral profile in relation to physical exercises before and during isolation, interpreted through descriptive analysis, and the groups were compared through Mann-Whitman’s statistics. The drop in the percentage of active individuals with or without medication occurred when comparing the scenarios before and during quarantine. However, the difference in the prevalence of active individuals between the groups was significant, showing that the group with medication remained more active. The fear of contamination, the measures of distance and the lack of adherence of the population to classes by videoconference reduced the frequency of physical activities in the general sample population. However, people who used medication showed greater concern about the practice of physical activity to optimize treatment. The isolation period had a negative impact on the practice of physical activity, regardless of the presence of some chronic disease or the use of medication.
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