ACUTE CARDIOVASCULAR RESPONSE TO PRE-PRANDIAL AND POSTPRANDIAL EXERCISE IN ACTIVE MEN

作者：Mota Marcio Rabelo; Chaves Sandro Nobre; Dutra Maurilio Tiradentes^*; de Oliveira Ricardo Jaco; Elias Dantas Renata Aparecida; de Lima Filipe Dinato

来源：Revista Brasileira de Medicina do Esporte, 2017, 23(5): 380-384.

DOI：10.1590/1517-869220172305174136

• exercise
• fasting
• postprandial period
• blood pressure
• heart rate

Introduction: Pre-prandial exercise promotes greater mobilization of fat metabolism due to the increased release of catecholamines, cortisol, and glucagon. However, this response affects how the cardiovascular system responds to exercise. Objective: To evaluate the response of systolic, diastolic, and mean blood pressure, heart rate (HR) and rate-pressure product (RPP) to pre-and postprandial exercise. Methods: Ten physically active male subjects (25.50 +/- 2.22 years) underwent two treadmill protocols (pre-and postprandial) performed for 36 minutes at 65% of VO(2)max on different days. On both days, subjects attended the laboratory on a 10-hour fasting state. For the postprandial session, volunteers ingested a pre-exercise meal of 349.17 kcal containing 59.3 g of carbohydrates (76.73%), 9.97 g of protein (12.90%), and 8.01 g of lipids (10.37%). Blood pressure, HR and RPP were measured before and after exercise. The 2x2 factorial Anova with the multiple comparisons test of Bonferroni was applied to analyze cardiovascular variables in both moments (pre-vs. postprandial). The significance level was set at p<0.05. Results: Systolic (121.70 +/- 7.80 vs. 139.78 +/- 12.91 mmHg) and diastolic blood pressure (66.40 +/- 9.81 vs. 80.22 +/- 8.68 mmHg) increased significantly after exercise only in the postprandial session (p<0.05). HR increased significantly (p<0.05) after both protocols (64.20 +/- 15.87 vs. 141.20 +/- 10.33 bpm pre-prandial and 63.60 +/- 8.82 vs. 139.20 +/- 10.82 bpm postprandial). RPP had a similar result (8052.10 +/- 1790.68 vs. 18382.60 +/- 2341.66 mmHg. bpm in the pre-prandial session and 7772.60 +/- 1413.76 vs. 19564.60 +/- 3128.99 mmHg. bpm in the postprandial session). Conclusion: These data suggest that fasted exercise does not significantly alter the blood pressure. Furthermore, the meal provided before the postprandial exercise may promote a greater blood pressure responsiveness during exercise.

• 出版日期2017-10