INSULIN ACTION AND SECRETION IN ENDURANCE-TRAINED AND UNTRAINED HUMANS

INSULIN ACTION AND SECRETION IN ENDURANCE-TRAINED AND UNTRAINED HUMANS
复制标题

DOI:
10.1152/jappl.1987.63.6.2247
复制
发表时间:
1987-12-01
影响因子:
3.3
通讯作者:
HOLLOSZY, JO
HOLLOSZY, JO
中科院分区:
医学2区
文献类型:
--
作者:
KING, DS;DALSKY, GP;HOLLOSZY, JO

文献摘要

被引文献

相似文献

为了评估胰岛素敏感性和反应性,使用两阶段高胰岛素血症正葡萄糖钳夹程序(40和400 mU的胰岛素输注)。m-2.cntdot. min-1)对11名接受过药物治疗训练的志愿者和11名未经训练的志愿者进行。3-h高血糖钳夹程序(血浆葡萄糖浓度约为0.000000)。180 mg/dl)用于研究15名训练和12名未训练受试者对固定血糖刺激的胰岛素反应。在40-mU. cntdot. m-2.cntdot. min ~(-1)胰岛素输注时,葡萄糖代谢率为10.2 ± 0.001。0.5 mg. cntdot。kg去脂质量(FFM)-1.cntdot. min-1,而训练组为8.0 ±. 0.6 mg. kg FFM-1. min ~(-1),与训练前比较有显著性差异(P < 0.01)。相比之下,在最大刺激葡萄糖处置方面没有显著差异:17.7 . ±. 0.6在训练组与16.7 .+-. 0.7 mg. kg FFM-1. min ~(-1),未训练组。在高血糖钳夹过程中,在两个早期(0-10分钟:140 ± 100),受训练的受试者的血浆胰岛素的增量面积较低。18对223 +-。23 μ U. cntdot. ml-1. 10-180 min:4,582 ± 0.005)和晚期(10-180 min:4,582 ± 0.005)。六百八十九对八千八百九十五。1,316 μ U·cm·dot。ml-1. min; P < 0.005)。这些数据表明:1)健康受试者中胰岛素作用的改善是由于对胰岛素的敏感性增加,而对胰岛素的反应性没有变化,2)受试者对相同葡萄糖刺激的血浆胰岛素反应小于未受试者。
To evaluate insulin sensitivity and responsiveness, a two-stage hyperinsulinemia euglycemic clamp procedure (insulin infusions of 40 and 400 mU .cntdot. m-2 .cntdot. min-1) was performed on 11 endurance-trained and 11 untrained volunteers. A 3-h hyperglycemic clamp procedure (plasma glucose .apprx. 180 mg/dl) was used to study the insulin response to a fixed glycemic stimulus in 15 trained and 12 untrained subjects. During the 40-mU .cntdot. m-2 .cntdot. min-1 insulin infusion, the glucose disposal rate was 10.2 .+-. 0.5 mg .cntdot. kg fat-free mass (FFM)-1 .cntdot. min-1 in the trained group compared with 8.0 .+-. 0.6 mg .cntdot. kg FFM-1 .cntdot. min-1 in the untrained group (P < 0.01). In contrast, there was no significant difference in maximally stimulated glucose disposal: 17.7 .+-. 0.6 in the trained vs. 16.7 .+-. 0.7 mg .cntdot. kg FFM-1 .cntdot. min-1 in the untrained group. During the hyperglycemic clamp procedure, the incremental area for plasma insulin was lower in the trained subjects for both early (0-10 min: 140 .+-. 18 vs. 223 .+-. 23 .mu.U .cntdot. ml-1 .cntdot. min; P < 0.005) and late (10-180 min: 4,582 .+-. 689 vs. 8,895 .+-. 1,316 .mu.U .cntdot. ml-1 .cntdot. min; P < 0.005) insulin secretory phases. These data demonstrate that 1) the improved insulin action in healthy trained subjects is due to increased sensitivity to insulin, with no change in responsiveness to insulin, and 2) trained subjects have a smaller plasma insulin response to an identical glucose stimulus than untrained individuals.