Effects of Differences in Pre-Exercise Dietary Intake on Arterial Stiffness and Aerobic Exercise Performance -Comparison of Vegetable and Animal Based-Foods

Abstract

This study was investigated the effects of vegetable-based versus animal-based dietary intake before exercise on arterial stiffness and aerobic exercise performance. Eleven healthy young adults performed a vegetable-based or animal-based dietary trial on separate days in a randomized crossover trial. We matched the protein, fat, and carbohydrate (PFC) balance of vegetable and animal-based diets. Carotid-femoral pulse wave velocity (cfPWV), blood pressure and heart rate were measured before and 120 min after the meal on the both vegetable-based or animal-based dietary trial. After the all measurement, aerobic performance was assessed using a graded power test. The cfPWV in the vegetable-based diet significantly decreased after the meal (p < 0.05). However, The cfPWV in the animal-based diet did not differ before and after meal. Blood pressure and heart rate did not differ before and after meal in the both trials. Maximal oxygen uptake was higher in the vegetable-based diet trial than in the animal-based diet trial (P<0.05). These results indicate that pre-exercise vegetable-based dietary intake may reduce arterial stiffness, and may improve aerobic exercise performance.