Abstract
BackgroundIndividuals at risk of suffering cardiovascular disease (CVD) present with larger increases in blood triglyceride (TG) concentration after a high-fat meal than do healthy individuals. These postprandial hypertriglyceride levels are an independent risk factor for CVD. Prescription of statins and a bout of prolonged exercise are both effective in lowering postprandial hypertriglyceride levels. We aimed to evaluate the comparative effectiveness of statins vs. a bout of aerobic exercise in reducing fasting and postprandial TG (PPTG) concentrations in individuals at high risk of developing CVD. MethodsThirty-seven studies from a systematic literature search of the PubMed, EMBASE, and Cochrane databases were included in this review. The selected studies conducted trials involving statin therapy (n = 20) or a bout of aerobic exercise (n = 19) and measured their impact on PPTG levels as the outcome. Two studies analyzed both treatments and were included in duplicate. The meta-analysis was constructed using a random-effects model to calculate the mean difference (MD). The Student t test was used to compare the data sets for statins vs. exercise. ResultsOverall, statin and exercise interventions showed similar reductions in PPTG levels, with an MD of –0.65 mmol/L for statins (95% confidence interval (95%CI): –0.54 to –0.77; p < 0.001) and –0.46 mmol/L for exercise (95%CI: –0.21 to –0.71; p < 0.01). However, statins lowered fasting TG levels more than exercise (MD = –1.54 mmol/L, 95%CI: –2.25 to –0.83; p = 0.009). ConclusionAlthough aerobic exercise is effective in lowering blood TG levels, statins seem to be more efficient, especially in the fasted state. A combination of exercise and statins might reveal a valuable approach to the treatment and prevention of CVD. More studies are required to determine the underlying mechanisms and the possible additive effects of these interventions.
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