Does high intensity interval exercise promote post-exercise hypotension?
Cardiff Metropolitan University
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Introduction: High blood pressure has been identified to largely contribute to cardiovascular disease. Regular exercise has been prescribed by medical organisations as a strategy to treat and prevent high blood pressure. Post-exercise hypotension can be described as a reduction in blood pressure in the minutes and hours following an exercise bout. The most effective form of exercise in inducing post-exercise hypotension has not yet been identified. There is limited research on the effect of high-intensity interval training on post-exercise blood pressure response. Therefore, this study compared the post-exercise hypotension response following a bout of high-intensity interval training and a bout of continuous moderateintensity training. Methods: The purpose of this study was to compare a single bout of high-intensity interval training (4 x 4-minute at 85% VO2 max interspersed with 3- minutes active recovery at 50% VO2 max) with a bout of continuous moderateintensity training (a 30-minute continuous bout at 70% VO2 max) of equal total power output on the post-exercise hypotension response. Post-exercise blood pressure was measured at six 10-minute increments in 10 normotensive active individuals (Age: 21 ± 2 years, Body Mass: 76.4 ± 9.3 kg, VO2 max: 43.3 ± 10.4 ml/kg/min). Results: Both conditions induced a significant decrease in mean resting systolic blood pressure from baseline to the recovery period (p<0.05). There was no significant difference in systolic blood pressure between the intensities (p=0.74). DBP showed no significant difference (p=0.17) from baseline to the post-exercise recovery period in both exercise protocols. Discussion: An acute decrease in systolic blood pressure was observed following a high-intensity interval training bout and continuous moderate-intensity training bout of equal workload. These results suggest post-exercise hypotension is influenced more by the total workload of an exercise bout compared to the intensity reached within an exercise bout. The acute decrease in systolic blood pressure has been suggested to result in chronic adaptation if the exercise stimulus is regularly repeated. Therefore, exercise prescription should include both high-intensity interval training and continuous moderate-intensity training to cause similar blood pressure lowering effects. Conclusion: The results confirm the benefit of using exercise to reduce blood pressure acutely. From these findings it can be suggested that both high-intensity iii interval training and continuous moderate-intensity training could be used to treat and prevent high blood pressure, although further research is needed to compare the chronic response of repeated exercise training of these protocols.
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Chant, Benjamin (Cardiff Metropolitan University, 2014)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 ...
The Effect of Intensity on Post-Exercise Hypotension: Is Post-Exercise Hypotension different following high intensity interval exercise when compared to continuous exercise and do antihistamines blunt the hypotensive response? Pickles, Sam (Cardiff Metropolitan University, 2015)Introduction: An acute drop in blood pressure is seen following exercise, this is called postexercise hypotension (PEH). High intensity interval training is superior to continuous training in terms of improving aerobic ...
Incledon, Zavia (Cardiff Metropolitan University, 2014)Background. Elevated blood pressure is one of the most significant risk factors for cardiovascular disease. Post-exercise hypotension is the phenomenon by which there is a prolonged reduction in blood pressure in the ...