Influence of diet-induced obesity and voluntary exercise training on cardiac lipids and mitochondrial function in mice

Abstract

Background: Obesity is a risk factor for developing cardiometabolic disease. Exercise training is pivotal in the treatment of obesity and is associated with reduced cardiovascular mortality. This study examined the effect of high-fat feeding on cardiac morphology and mitochondrial function, alongside the mitigating effects of voluntary exercise training. Methods: Six-week-old male C57Bl/6 J mice commenced a high fat diet (HFD) or chow diet and were randomized to receive locked (sedentary) or unlocked (voluntary exercise training (VET)) running wheels at 10 weeks of age. Mice were monitored until 30 weeks of age and euthanized for collection of tissues. Magnetic resonance imaging was performe..