3 research outputs found

    Cardiovascular responses to an exercise test in subjects with intermittent claudication

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    Estudos sugerem que pacientes com claudicação intermitente (CI) apresentam respostas hemodinĂąmicas alteradas durante o teste ergomĂ©trico. Contudo, o impacto da severidade da doença nessas respostas ainda nĂŁo estĂĄ claro. Em vista disso, o presente estudo analisou o impacto da severidade dos sintomas de CI nas respostas cardiovasculares ao teste de esforço, em indivĂ­duos com doença arterial obstrutiva perifĂ©rica. Participaram do estudo 47 sujeitos com CI. Foi realizado teste ergomĂ©trico em esteira, utilizando protocolo especĂ­fico para essa população. A amostra foi dividida em trĂȘs grupos de acordo com a distĂąncia obtida no teste de esforço em: 1Âș tercil, caminhavam entre 210 e 420 metros; 2Âș tercil, caminhavam entre 450 e 700 metros; e 3Âș tercil, caminhavam entre 740 e 1060 metros. A pressĂŁo arterial sistĂłlica (PAS) e diastĂłlica (PAD), a frequĂȘncia cardĂ­aca (FC) e o duplo produto (DP) foram obtidos em repouso, no primeiro estĂĄgio e no pico de esforço. Nos trĂȘs tercis, a PAS e a PAD aumentaram significantemente ao longo do teste ergomĂ©trico. Nos trĂȘs tercis, a FC e o DP aumentaram significantemente ao longo do teste e as respostas no 1Âș tercil foram mais acentuadas que nos demais tercis. Todavia, no pico de esforço, a FC e o DP nĂŁo houve diferença entre os tercis. ConcluĂ­u-se que a severidade da CI nĂŁo influenciou as respostas da pressĂŁo arterial durante o teste ergomĂ©trico progressivo, ao passo que maiores valores de FC e DP foram observados em indivĂ­duos com CI mais severa em uma carga submĂĄxima.Studies suggest that patients with intermittent claudication (IC) present abnormal cardiovascular responses during treadmill exercise. However, it remains unclear whether this response is influenced by the severity of the disease. The objective of this study was to analyze the impact of IC severity on cardiovascular responses to an exercise test in subjects with peripheral arterial obstructive disease. Forty-seven men and women with IC, with a mean age of 65±9 years, participated in the study. The subjects underwent an exercise test on a treadmill using a specific protocol for this population. The subjects were divided into three groups according to the distance walked in the test: 1st tertile, walked from 210 to 420 m; 2nd tertile, walked from 450 to 700 m, and 3rd tertile, walked from 740 to 1060 m. Systolic (SBP) and diastolic blood pressure (DBP), heart rate (HR) and rate-pressure product (RPP) were measured at rest, in the first stage of the treadmill test, and during peak exercise. SBP and DBP increased along the exercise test in the three tertiles. HR and RPP increased along the test in the three tertiles, and these increases were higher in the 1st tertile than in the other tertiles in the first stage. However, similar HR and RPP were observed for the three tertiles during peak exercise. In conclusion, the severity of IC did not affect blood pressure responses during treadmill exercise. However, HR and RPP were higher during submaximal exercise in subjects with more severe IC.Fundação de Amparo Ă  Pesquisa do Estado de SĂŁo Paulo (FAPESP

    Effect of rest interval on cardiovascular responses after resistance exercise

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    OBJECTIVE: To analyze the acute effect of rest interval length on cardiovascular response after resistance exercise. METHODS: Twenty young eutrophic men (23.9 ± 0.7 years;23.8 ± 0.5 kg/mÂČ) performed two experimental sessions in a random order: resistance exercise with a 30-second (I30) and with a 90-second (I90) rest interval between sets. Both sessions included five exercises with 50% of the one-repetition maximum. Before and 24 hours after the experimental sessions, systolic blood pressure (SBP), diastolic blood pressure (DBP), heart rate (HR), and rate-pressure product (RPP) were obtained. RESULTS: The SBP, DBP and RPP responses were similar between the I30 and I90 sessions (p&gt;0.05), while the HR after I30 was significantly higher than after I90 (p<0.01) for the first hour after exercise. The cardiovascular responses during the first 24 hours were similar between both sessions (p&gt;0.05). CONCLUSION: Different recovery intervals did not promote post-exercise hypotension, however, a short rest interval increases heart rate for 1 hour after exercise. In addition, within 24 hours of the responses were similar between groups
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