Effects of exercise accumulation on plasma lipids and lipoproteins.

摘要: Debate exists as to whether improvements in some cardiometabolic risk factors following exercise training result more from the last session of, or an accumulation sessions. This study was designed compare effect of a single with 3 consecutive days on triglyceride (TG), high-density lipoprotein-cholesterol (HDL-C), and low-density (LDL-C). Twelve young adult (aged 22.5±2.5 years), overweight (body mass index=29.7±4 kg·m(-2)), sedentary, black (n=5) white (n=7) men (n=6) women completed, random order, treadmill at 60% maximal oxygen uptake for 90 min (1EX), accumulated sessions (same 1EX) (3EX), control protocol (no 6 days). Plasma samples were collected baseline through 24, 48, 72 h postexercise. Significant treatment-by-time interactions (p<0.05) existed HDL-C LDL-C. Postexercise responses differed 48 (1EX: -3.6, 3EX: +3.7 mg·dL(-1)) -1.7, +3.2 mg·dL(-1)). LDL-C -16, +6 Although not statistically significant, TG concentrations decreased by 29% 24 after 3EX, compared -7% 1EX. An inverse relationship between postexercise reduction present 3EX (r=-0.655; p<0.05). In conclusion, increased than 1EX, while decrease 1EX suppressed. Blood lipid panel changes may be due effects over time rather just most recent session.