- Title
- The effect of low-volume high-intensity interval training on cardiovascular health outcomes in type 2 diabetes: a randomised controlled trial
- Creator
- Way, Kimberley L.; Sabag, Angelo; Johnson, Nathan A.; Sultana, Rachelle N.; Baker, Michael K.; Keating, Shelley E.; Lanting, Sean; Gerofi, James; Chuter, Vivienne H.; Caterson, Ian D.; Twigg, Stephen M.
- Relation
- International Journal of Cardiology Vol. 320, Issue 1 December 2020, p. 148-154
- Publisher Link
- http://dx.doi.org/10.1016/j.ijcard.2020.06.019
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2020
- Description
- Background: Low-volume high-intensity interval training (HIIT) may be a time-efficient strategy that leads to similar or superior improvements in cardiorespiratory fitness (CRF) and cardiovascular disease (CVD) risk factors when compared with moderate-intensity continuous training (MICT). Our study investigated the effect of lowvolume HIIT or MICT versus sham placebo-control (PLA) on central arterial stiffness, hemodynamic responses, and CVD risk factors in adults with obesity and type 2 diabetes (T2D). Methods: Eligible participants were previously inactive adults with obesity and T2D. Individuals were randomly allocated to: i) HIIT (1 x 4 min cycling at 90% peak oxygen consumption [V̇O2peak]); ii) MICT (45min of cycling at 60% VO2peak); or PLA. Training groups exercised thrice weekly for 12 weeks. Central arterial stiffness, hemodynamics and CVD risk factors were assessed at baseline and post-intervention. Analysis of covariance (ANCOVA) was used to examine changes following HIIT, MICT and PLA. Results: Thirty-five participants (age: 55.1 ± 1.4 years, BMI: 36.1 ± 0.8 kg/m2) completed the study. A significant intervention effect was found for changes in pulse wave velocity (PWV) (p = .03), which reduced with HIIT (−0.3 ± 0.9 m/s) and MICT (−0.1 ± 1.1 m/s) but increased with PLA (0.8 ± 1.6 m/s). There was a significant intervention effect for changes in V̇O2peak (p < .01), glycosylated hemoglobin (p = .03), systolic blood pressure (p b .01), and waist circumference (p = .03), which all improved following MICT or HIIT but not PLA; there was no difference between MICT and HIIT. Conclusions: Twelve minutes of low-volumeHIIT perweek leads to improvements in central arterial stiffness and cardiovascular health in inactive individuals with obesity and T2D.
- Subject
- high-intensity interval training; type 2 diabetes; arterial stiffness; cardiovascular health; SDG 3; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1451440
- Identifier
- uon:44190
- Identifier
- ISSN:0167-5273
- Language
- eng
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