Why the study?
This study evaluated acute cardiac stress following a high-intensity interval training session in patients with type 2 diabetes compared to healthy controls.
Does a single session of high-intensity interval training acutely impair cardiac function differently in patients with type 2 diabetes compared to healthy controls?
Does a single session of high-intensity interval training acutely impair cardiac function differently in patients with type 2 diabetes compared to healthy controls?
A single session of high-intensity interval training acutely impairs left ventricular diastolic function in both T2D patients and healthy controls, with T2D patients additionally showing impaired right ventricular function and increased supraventricular ectopy.
Answers are grounded in this paper and cite their sources.
HIIT may transiently impair LV diastolic function similarly in T2D and controls; pilot data leave open differential RV effects and need for larger trials.
This study evaluated acute cardiac stress after a high-intensity interval training session in patients with type 2 diabetes (T2D) versus healthy controls. High intensity aerobic exercise was performed by 4 × 4-min intervals (90-95% of maximal heart rate), followed by a ramp protocol to peak oxygen uptake. Echocardiography was performed before and 30 min after exercise. Holter electrocardiography monitored heart rhythms 24 h before, during, and 24 h after the exercise. Left atrial end-systolic volume, peak early diastolic mitral annular velocity, and the ratio of peak early to late diastolic mitral inflow velocity were reduced by approximately 18%, 15%, and 31%, respectively, after exercise across groups. Left ventricular end-diastolic wall thickness was the only echo parameter that significantly differed between groups in response to exercise. The T2D group had a rate of supraventricular extrasystoles per hour that was 265% greater than that of the controls before exercise, which remained higher after exercise. A single exhaustive exercise session impaired left ventricular diastolic function in both groups. The findings also indicated impaired right ventricular function in patients with T2D after exercise.ClinicalTrials.gov Identifier: NCT02998008.
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Ness et al. (2022) studied this question.
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