Endurance and resistance training exercises program can shrink cardiac adipose tissue; but they don’t work equally well on both kinds of fat around the heart, which in excess are emerging risk factors for cardiovascular disease. Both kinds of exercise were associated with reduced mass of epicardial adipose tissue, which lies directly on the myocardium and around the coronary arteries, by MRI, in a new study of 50 usually sedentary adults with central obesity.
But only resistance training reduce the observe mass of pericardial adipose tissue; which builds up just inside and within the pericardium, observe researchers in their analysis of cohort in Denmark publish July 3 in JAMA Cardiology. “These findings provide exploratory evidence of exercise as a means to reduce the adipose tissue deposits surrounding the heart,” lead author Regitse Højgaard Christensen, MD, a PhD candidate at Copenhagen University Hospital, Denmark.
The study “emphasizes that practicing clinicians [should] motivate patients at risk of cardiovascular disease to engage in any type of exercise as a preventative measure,” she said. The group randomize 50 adults with normal cardiac function; so to undergo 12 weeks of either high-intensity interval endurance training, resistance training, or no exercise. The investigators were blind to intervention assignment, and exercise programs were supervise by nonphysician trainers.
Epicardial adipose tissue mass fell by a mean of 9 g in the endurance exercise group; so compare with the control group, and by 8 g in the resistance exercise group. The corresponding changes were 6 g and 34 g, respectively; hence for pericardial adipose tissue reductions. “In contrast to these invasive approaches, exercise training may serve as a noninvasive strategy to reduce excessive cardiac adipose tissue,” the authors propose.
Participants assign to one of the exercise groups perform three weekly 45-minute training sessions over a 12-week period. Endurance exercise consist of high-intensity interval exercise perform on an bicycle ergometer. Resistance exercise was design as a 45-minute interval-type, medium-load, high-repetition, time base training.
Training is stronger stimulus
“They know from other studies that resistance training is a stronger stimulus; so for increase muscle mass and increase basal metabolism, compare to endurance training; also they therefore speculate that participants doing resistance training; hence burn more calories during the day (also in inactive periods), compare to those engaging in endurance training,” she said.
However, future research is need to determine “whether this speculation; so explains the differential effects of resistance and endurance training on pericardial adipose tissue.” Christensen acknowledged being “surprise” by the different; so effects of endurance and resistance training. It’s possible, she proposed, “that the small study size is the reason for no effect; of endurance training on pericardial adipose tissue mass.”
Christensen said the findings “provide new exploratory evidence; so that different exercise modalities perform according to current exercise guidelines target; so cardiac adipose tissue in addition to other known health benefits of exercise; also this was even without concomitant diet restriction.” She cautioned that the study “is exploratory in nature, as it was a secondary trial outcome; also therefore cannot form the basis for specific clinical guidelines.”