What exactly is happening in the metabolism of the exercising individual? Listen as Associate Editor Gary Lopaschuk (University of Alberta, Canada) interviews lead author Kari Kalliokoski (University of Turku, Finland) and content expert Michael Nelson (University of Texas at Arlington) about the work by Heiskanen et al, which studied energy metabolism in the heart during cardiac hypertrophy that was not pathological, but rather a result of exercise. Kalliokoski and colleagues measured changes in myocardial metabolism for healthy, untrained individuals who participated in either high intensity interval training (HIIT) or moderate intensity continuous aerobic training. Using PET imaging, once with a euglycemic hyperinsulinemic clamp and once in a traditional fasting state, Kalliokoski and co-authors studied the right ventricular response to exercise and its training adaptation. Did the HIIT training group achieve better results with just 3 minutes of exercise, compared to the moderate intensity aerobic group which exercised 40 – 60 minutes? Listen now.
Marja A. Heiskanen, Tuija Leskinen, Ilkka H. A. Heinonen, Eliisa Löyttyniemi, Jari-Joonas Eskelinen, Kirsi Virtanen, Jarna C. Hannukainen, Kari K. Kalliokoski Right ventricular metabolic adaptations to high-intensity interval and moderate-intensity continuous training in healthy middle-aged men Am J Physiol Heart Circ Physiol, published September 1, 2016. DOI: 10.1152/ajpheart.00399.2016