久坐不动的非裔美国女性运动后的急性胰岛素反应及其与脂质变化的关系

A. S, Taylor J.K, Rentería I, Gómez-Miranda L.M, M. J., Grandjean P.W
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摘要

久坐不动的非裔美国女性患高血压、血脂异常、代谢综合征和运动后胰岛素反应受损的风险增加。本研究的目的是确定单次有氧运动对1464千焦(350千卡)运动后空腹血清胰岛素和葡萄糖浓度的影响,并确定这种反应是否与超重AA女性的血脂浓度有关。绝经前AA妇女(n = 11, mean±SD,年龄= 32.5±4.8岁,BMI = 29.8±4.8 kg·m-2, %脂肪= 35.6±6.3,VO2peak = 21.5±3.6 ml·kg-1·min-1,总胆固醇= 4.8±0.6 mmol·L-1,甘油三酯= 0.60±0.2 mmol·L-1, HDLC = 3.3±0.5 mg·dL-1)在60%-70%VO2peak下进行1464 kJ (350 kcal)的跑步机运动。在运动前24小时、运动后24小时、运动后48小时采集空腹血浆胰岛素和葡萄糖浓度。运动后空腹胰岛素浓度立即升高(基线=77.1±10.42 vs立即=117.4±15.28 μU·mL-1, 95%CI= 32.71, 47.89;P < 0.05)。运动前后24 h胰岛素浓度变化与BMI (r= 0.51)、vo2峰值(r= -0.47)、脂蛋白脂肪酶活性变化(r=0.37)相关(P均<0.05)。综上所述,在久坐的AA女性中,运动后胰岛素反应可能会立即升高,并且在运动后48小时内不会被抑制在运动前浓度以下。运动后24小时的胰岛素反应与脂蛋白代谢标志物有一定的相关性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Acute insulin response following exercise and its association to lipid changes in sedentary African-American women
Sedentary African-American (AA) women are at increased risk of hypertension, dyslipidemias, metabolic syndrome, and impaired insulin response to exercise. The purpose of the study was to determine the effects of a single bout of aerobic exercise on fasting serum insulin and glucose concentrations following 1464 kJ (350 kcal) of exercise and to determine if this response was associated with serum lipid concentrations in overweight AA women. Premenopausal AA women (n = 11, mean ± SD, age = 32.5 ± 4.8 yr., BMI = 29.8 ± 4.8 kg·m-2, % fat = 35.6 ± 6.3, VO2peak = 21.5 ± 3.6 ml·kg-1·min-1, total cholesterol = 4.8 ± 0.6 mmol·L-1, triglycerides = 0.60 ± 0.2 mmol·L-1, HDLC = 3.3 ± 0.5 mg·dL-1) performed 1464 kJ (350 kcal) of treadmill exercise at 60%-70%VO2peak. Fasting plasma insulin and glucose concentrations were collected 24-h prior to, and immediately, 24-h, and 48 h following exercise. Fasting insulin concentration increased immediately following exercise (Baseline=77.1 ± 10.42 vs. Immediately=117.4 ± 15.28 μU·mL-1, 95%CI= 32.71, 47.89; P<0.05). The change in insulin concentration from 24-h pre- to 24-h post-exercise was correlated with BMI (r= 0.51), VO2peak (r= -0.47), and the change in lipoprotein lipase activity (r=0.37) (P<0.05 for all). In conclusion, in sedentary AA women, the insulin response immediately following exercise may be elevated, and is not suppressed below pre-exercise concentrations during the 48-h following exercise. The insulin response 24-h following exercise is modestly associated with markers of lipoprotein metabolism.
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