Abstract
(1) Background: This study investigated the effect of acute barehanded whole body high-intensity intermittent exercise (HIIE) and moderate intensity and continuous exercise (MICE) at the same quantity of energy expenditure on postprandial triglyceride (TG) concentrations. (2) Methods: Nine healthy males completed three trials (HIIE, MICE and control (CON)) in a random order separated by at least 14 days. After each intervention, the participants rested for 12 h and consumed a high-fat test meal on the next day. The blood samples and respiratory exchange ratio were observed in the fasted state and for 4 h after consuming the test meal. (3) Results: The HIIE had a significantly higher area under the curve of postprandial fat oxidation rate than MICE (p = 0.027) and CON (p = 0.035) and exhibited significantly lower postprandial TG concentration than the MICE and CON at 2 and 4 h after the test meal. Moreover, the HIIE displayed a higher postprandial TG concentration area under the curve than MICE (p = 0.013) and CON (p = 0.048). (4) Conclusions: The present study concluded that acute barehanded whole body HIIE could significantly lower postprandial TG concentrations. It possibly can induce a rise in the postprandial fat oxidation rate.
Highlights
Higher postprandial triglyceride (TG) concentrations significantly increase the risks of cardiovascular disease (CVD) and insulin resistance [1,2,3]
The heart rates (HRs) regression curve based on the 16-min submaximal oxygen uptake test revealed that the energy expenditures in the high-intensity intermittent exercise (HIIE) and moderate intensity and continuous exercise (MICE) were 384.4 ± 69.9 kcal and 376.7 ± 76.9 kcal; the maximal and average HRs for the HIIE were 171.0 ± 9.1 and 140.1 ± 3.7 beats
Because the American College of Sports Medicine guidelines define intensive exercise according to a 60–89% heart rate reserve [20], the Tabata exercise we used in this study can be defined as intensive exercise
Summary
Higher postprandial triglyceride (TG) concentrations significantly increase the risks of cardiovascular disease (CVD) and insulin resistance [1,2,3]. Due to the recent prevalence of high-fat meals and the fact that postprandial plasma lipid responses remain high for a few hours [4], people are in a state of high plasma lipid concentration for the majority of a day. Decreasing postprandial lipid concentrations effectively has recently received considerable attention. The reduction in postprandial plasma lipid concentrations have been attributed to the increased lipoprotein lipase activity (LPLA) in the muscles [7,8], increased insulin sensitivity, heightened post-exercise fat oxidation rate and lowered release of very-low-density lipoprotein in the liver [9], the exact cause remains unclear. High-intensity intermittent exercise (HIIE) reduced postprandial TG concentrations effectively the day [10,11,12]
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