Acute effects of high and low intensity exercise on selected blood lipids in women

Purpose: This study examined the effects of exercising at a high and low lactate concentration on total cholesterol, high density lipoprotein cholesterol, and the total-cholesterol-tohigh-density-lipoprotein-cholesterol ratio.Methods: Twelve female volunteers (age 25 +/- 8 yr, height 167.6 +/- 5.2 cm, weight 61.2 +/- 5.9 kg) performed a maximal oxygen consumption test (max 02 consumption 46.2 +/- 7.6 mL x kg-1 x min-1), a 1675-joule low intensity test (lactate concentration approximately 2 mM), and a 1675-joule high intensity test (lactate concentration approximately 4 mM) on a motor-driven treadmill. Blood samples for analyzing total cholesterol and high density lipoprotein cholesterol were drawn preexercise, immediately postexercise, and at 24 hr postexercise, and were corrected for any changes in plasma volume.Results: Statistical analyses were completed using a 2 x 3 (intensity by time) repeated-measures analysis of variance. There was no interaction between intensity and time for totalcholesterol, high density lipoprotein cholesterol, or the total-cholesterol-to-high-density-lipoprotein-cholesterol ratio (p > 0.05). However, when collapsed across intensity, a significant difference in total cholesterol and the total-cholesterol-to-highdensity-lipoprotein-cholesterol ratio occurred over time (p < 0.05).Conclusion: The data show that a single isolated session of exercise, regardless of intensity, reduces total cholesterol and the total-cholesterol-to-high-density-lipoprotein-cholesterol ratio, but does not increase high density lipoprotein cholesterol in women.

2016-07-02T11:14:40+00:00March 4th, 2016|Exercise|0 Comments

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