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Advisor(s)
Abstract(s)
Objectivos: Este estudo teve por objectivo verificar a influência de um
programa prolongado de exercício físico em parâmetros de aptidão física e
cardiovasculares avaliados em prova de esforço máximo, em sujeitos com
diagnóstico recente de síndrome coronário agudo. Métodos: A amostra,
constituída por 50 sujeitos, foi distribuída por um grupo experimental (n=25) e
por um grupo controlo (n=25), tendo o grupo experimental ficado sujeito a um
programa de exercício físico regular durante 52 semanas. Todos os indivíduos
realizaram duas provas de esforço máximas (PEM) em tapete rolante, uma no
início e a outra no final do protocolo experimental, tendo a primeira prova sido
realizada 2-3 meses após o evento cardíaco. Nas PEM foram registados
parâmetros de aptidão física (velocidade máxima, inclinação máxima do tapete
e tempo de prova), dos indicadores metabólicos (METs máximo) e parâmetros
cardiovasculares (frequência cardíaca repouso e máxima durante a prova,
tensão arterial de repouso e máxima durante a prova e o duplo produto máximo
e em repouso). Resultados: Comparativamente à primeira prova, na segunda
PEM verificou-se no grupo experimental um aumento significativo (p<0,05) dos
valores absolutos dos indicadores de aptidão física, com uma percentagem de
variação destes parâmetros significativamente superior à do grupo controlo. No
entanto, apesar do melhor desempenho físico evidenciado pelo grupo
experimental, não se verificaram diferenças significativas entre os dois grupos
no que respeita aos parâmetros cardiovasculares. Conclusão: Os resultados
permitem concluir que o programa de exercícios se revelou vantajoso para os
indivíduos do grupo experimental, tendo-lhes aumentado a tolerância ao
esforço físico máximo sem uma aparente sobrecarga cardiovascular adicional.
Objective:The aim of this study was to analyse the effect of a prolonged exercise program on the physical performance of patients with recent history of an acute coronary syndrome. Methods: A sample composed by 50 patients diagnosed with acute coronary syndrome was divided into a control group (n=25) and experimental group (n=25), which have participated in a 52-week exercise-training program. All patients underwent two maximal exercising tests in treadmill: the first one after 2 - 3 moths of the diagnosis of acute coronary syndrome and the second test one-year latter. The following parameters were assessed in both exercising tests: functional indices (maximal velocity, maximal treadmill inclination and test duration), metabolic indices (max. MET’s) and cardiovascular indices (heart rate, blood pressure, and double product at rest and maximal value during the test). Results: The absolute values of the functional indices revealed a significant increase in the experimental group (p<0.05), from the first to the second test. The experimental group showed a percentage of variation of physical indicators significantly higher compared to the control group. Although the experimental group presented a better functional performance during the second maximal exercising test, the cardiovascular indicators did not show significant differences between groups. Conclusion: These results allow us to conclude that the exercise program was advantageous to the patients of experimental group since it increased their tolerance to maximal effort without additional heart overload compared to the pre-training stage.
Objective:The aim of this study was to analyse the effect of a prolonged exercise program on the physical performance of patients with recent history of an acute coronary syndrome. Methods: A sample composed by 50 patients diagnosed with acute coronary syndrome was divided into a control group (n=25) and experimental group (n=25), which have participated in a 52-week exercise-training program. All patients underwent two maximal exercising tests in treadmill: the first one after 2 - 3 moths of the diagnosis of acute coronary syndrome and the second test one-year latter. The following parameters were assessed in both exercising tests: functional indices (maximal velocity, maximal treadmill inclination and test duration), metabolic indices (max. MET’s) and cardiovascular indices (heart rate, blood pressure, and double product at rest and maximal value during the test). Results: The absolute values of the functional indices revealed a significant increase in the experimental group (p<0.05), from the first to the second test. The experimental group showed a percentage of variation of physical indicators significantly higher compared to the control group. Although the experimental group presented a better functional performance during the second maximal exercising test, the cardiovascular indicators did not show significant differences between groups. Conclusion: These results allow us to conclude that the exercise program was advantageous to the patients of experimental group since it increased their tolerance to maximal effort without additional heart overload compared to the pre-training stage.
Description
Keywords
Treino físico Prova de esforço máxima Doenças cardiovasculares Duplo produto Physical training Maximal exercising test Cardiovascular diseases Double product
Pedagogical Context
Citation
Publisher
Instituto Politécnico do Porto. Escola Superior de Tecnologia da Saúde do Porto