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ObjectiveIn addition to recent discussions of low-carbohydrate, high-fat diets (LCHF) from a performance perspective, there is a paucity of knowledge regarding influence of the combined effect of an exercise and nutritional intervention, which varies in carbohydrate (CHO) intake and glycemic indices, on blood lipid levels in recreationally active men.MethodsA total of 65 male runners (VO2 peak = 55 ± 8 mL·min−1·kg−1) completed a 10-week ad libitum nutritional regimen (LOW-GI: ≥ 65% low GI CHO per day, n = 24; HIGH-GI: ≥ 65% high GI CHO per day, n = 20; LCHF: ≤ 50 g CHO daily, n = 21) with a concurrent prescribed endurance training intervention. Fasting total cholesterol (TC), triglycerides (TG), low-density lipoprotein cholesterol (LDL-C) and high-density lipoprotein cholesterol (HDL-C) were determined before and after the intervention. Additionally, 24-h dietary recalls were completed twice weekly.ResultsFollowing the intervention, TC was significantly higher in LCHF (196 ± 37 mg·dL−1) compared to both LOW-GI (171 ± 41 mg·dL−1) and HIGH-GI (152 ± 28 mg·dL−1, p |
