A comparison of submaximal exercise verses aerobic interval training on
Cardiff Metropolitan University
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INTRODUCTION: Exercise training has been shown to lower blood pressure acutely and chronically. The acute reduction in blood pressure during recovery from exercise (post-exercise hypotension) has been shown to influence chronic blood pressure decreases. Exercise intensity can influence the adaptations to exercise; however the exercise intensity that is optimal to lower blood pressure acutely and chronically is unclear in the literature. METHODS: The aim of this research was to compare the acute response of blood pressure to aerobic interval training (4x4 minute at 90% VO2max, with 3 minutes recovery at 50% VO2max) and a continuous exercise session (30 minutes at 50% VO2max). Blood pressure was measured in 10 active participants (Age: 20 ± 1 years, Mass: 77 ± 13.7 kg, VO2max: 46 ± 8 ml/kg/min) before, during and in the 60 minutes following exercise. RESULTS: Systolic blood pressure was significantly lower following the aerobic interval training session (p<0.05), however no differences were found in diastolic blood pressure during recovery (p>0.05). DISCUSSION: Aerobic interval training may elicit a larger drop in systolic blood pressure post-exercise. This acute decline in systolic blood pressure is linked to chronic blood pressure reduction, it could be predicted that aerobic interval training will result in a greater chronic blood pressure drop. Practitioners should therefore consider using this aerobic interval training session with patients with hypertension to lower systolic blood pressure acutely and chronically. CONCLUSION: Aerobic interval training causes a larger drop in systolic blood pressure post-exercise compared to submaximal exercise.
DEGREE OF BACHELOR OF SCIENCE (HONOURS) SPORT AND EXERCISE SCIENCE
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