12min/week of high-intensity interval training reduces aortic reservoir pressure in individuals with metabolic syndrome: a randomized trial

Ramos, Joyce S., Dalleck, Lance C., Ramos, Maximiano V., Borrani, Fabio, Roberts, Llion, Gomersall, Sjaan, Beetham, Kassia S., Dias, Katrin A., Keating, Shelley E., Fassett, Robert G., Sharman, James E. and Coombes, Jeff S. (2016) 12min/week of high-intensity interval training reduces aortic reservoir pressure in individuals with metabolic syndrome: a randomized trial. Journal of Hypertension, 34 10: 1977-1987. doi:10.1097/HJH.0000000000001034


Author Ramos, Joyce S.
Dalleck, Lance C.
Ramos, Maximiano V.
Borrani, Fabio
Roberts, Llion
Gomersall, Sjaan
Beetham, Kassia S.
Dias, Katrin A.
Keating, Shelley E.
Fassett, Robert G.
Sharman, James E.
Coombes, Jeff S.
Title 12min/week of high-intensity interval training reduces aortic reservoir pressure in individuals with metabolic syndrome: a randomized trial
Journal name Journal of Hypertension   Check publisher's open access policy
ISSN 1473-5598
0263-6352
Publication date 2016-07-27
Sub-type Article (original research)
DOI 10.1097/HJH.0000000000001034
Open Access Status Not yet assessed
Volume 34
Issue 10
Start page 1977
End page 1987
Total pages 11
Place of publication London, United Kingdom
Publisher Lippincott Williams and Wilkins
Collection year 2017
Language eng
Formatted abstract
Objective: Decreased aortic reservoir function leads to a rise in aortic reservoir pressure that is an independent predictor of cardiovascular events. Although there is evidence that high-intensity interval training (HIIT) would be useful to improve aortic reservoir pressure, the optimal dose of high-intensity exercise to improve aortic reservoir function has yet to be investigated. Therefore, this study compared the effect of different volumes of HIIT and moderate-intensity continuous training (MICT) on aortic reservoir pressure in participants with the metabolic syndrome (MetS).

Methods: Fifty individuals with MetS were randomized into one of the following 16-week training programs: MICT [n = 17, 30 min at 60-70% peak heart rate (HRpeak), five times/week]; 4 x 4-min high-intensity interval training (4HIIT) (n = 15, 4 x 4 min bouts at 85-95% HRpeak, interspersed with 3 min of active recovery at 50-70% HRpeak, three times/week); and 1 x 4-min high-intensity interval training (1HIIT) (n = 18, 1 x 4 min bout at 85-95% HRpeak, three times/week). Aortic reservoir pressure was calculated from radial applanation tonometry.

Results: Although not statistically significant, there was a trend for a small-to-medium group x time interaction effect on aortic reservoir pressure, indicating a positive adaptation following 1HIIT compared with 4HIIT and MICT [F (2,46) = 2.9, P = 0.07, 2 = 0.06]. This is supported by our within-group analysis wherein only 1HIIT significantly decreased aortic reservoir pressure from pre to postintervention (pre-post: 1HIIT 33 +/- 16 to 31 +/- 13, P = 0.03; MICT 29 +/- 9-28 +/- 8, P = 0.78; 4HIIT 28 +/- 10-30 +/- 9 mmHg, P = 0.10).

Conclusion: Three sessions of 4 min of high-intensity exercise per week (12 min/week) was sufficient to improve aortic reservoir pressure, and thus may be a time-efficient exercise modality for reducing cardiovascular risk in individuals with MetS.
Keyword Aorta
Interval training
Vascular function
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Published online 27 July 2016. Ahead-of-Print

 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 0 times in Thomson Reuters Web of Science Article
Scopus Citation Count Cited 0 times in Scopus Article
Google Scholar Search Google Scholar
Created: Tue, 16 Aug 2016, 12:08:01 EST by System User on behalf of Learning and Research Services (UQ Library)