Adaptations to skeletal muscle with endurance exercise training in the acutely fed versus overnight-fasted state
Adaptations to skeletal muscle with endurance exercise training in the acutely fed versus overnight-fasted state
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DOI：
10.1016/j.jsams.2010.03.002
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发表时间：
2010-07-01
影响因子：
4
通讯作者：
Thompson, Martin W.
中科院分区：
文献类型：
--
作者：
Stannard, Stephen R.;Buckley, Alex J.;Thompson, Martin W.
在训练期间尽量减少碳水化合物（CHO）状态可能会加速通常观察到的训练适应。本研究的目的是比较在急性 CHO 喂养和隔夜禁食状态下进行的耐力训练的适应性。八名女性和六名男性未经训练的健康参与者：年龄 26.6 +/- 5.8 岁（平均值 +/- SD）；身高 174.7 +/- 7.6 厘米；体重 75.3 +/- 11.4 kg：最大摄氧量 3.48 +/- 0.671/min：随机分为两个训练组，并在隔夜禁食 (FAST) 或急性进食 (FED) 状态下进行四个星期、每周五天的耐力循环测力计训练。 FAST 训练对 RER 或血浆葡萄糖没有影响。随后次最大运动期间的乳酸和 FFA 浓度。训练引起的股外侧柠檬酸合酶 (CS) 和 3-羟基辅酶 A 脱氢酶 (HAD) 活性变化在训练组之间没有差异（P 分别为 0.655 和 0.549）。但当考虑性别的影响时，男性对 FAST 的反应更好，女性对 FED 的反应更好。与 FED 组相比，FAST 组训练引起的最大摄氧量和静息肌糖原浓度显着增加（分别为 P = 0.014 和 P = 0.047）。但没有性别互动。总之，这些结果表明，（a）与在隔夜禁食状态下进行日常锻炼时相比，日常锻炼前的膳食摄入可以改变耐力训练中常见的运动训练引起的适应声音； (b) 男性和女性骨骼肌的这些适应程度略有不同。 (C) 2009 年澳大利亚运动医学。由爱思唯尔有限公司出版。保留所有权利。
Minimising carbohydrate (CHO) status in the peri-training period may accelerate the training adaptations normally observed. The aim of this study was to compare adaptations to endurance training undertaken in the acutely CHO fed and overnight-fasted states. Eight female and six male untrained, healthy participants: aged 26.6 +/- 5.8 years (mean +/- SD); height 174.7 +/- 7.6 cm; weight 75.3 +/- 11.4 kg: VO2max 3.48 +/- 0.671/min: were randomly divided into two training groups and undertook four weeks of five days per week endurance cycle ergometer training in either the overnight-fasted (FAST) or acutely fed (FED) state. FAST training had no effect on RER or plasma glucose. lactate and FFA concentrations during subsequent submaximal exercise. Training-induced changes in Vastus lateralis citrate synthase (CS) and 3-hydroxy-CoA dehydrogenase (HAD) activities were not different between training groups (P = 0.655 and 0.549, respectively). hut when the effect of gender was considered, men responded better to FAST and women responded better to FED. The FAST group showed a significantly greater training-induced increase in VO2max and resting muscle glycogen concentration than FED (P = 0.014 and P = 0.047 respectively). but there was no gender interaction. In conclusion, these results suggest that (a) meal ingestion prior to daily exercise can modify sonic of the exercise training-induced adaptations normally seen with endurance training compared to when daily exercise is undertaken in the overnight-fasted state; and (b) the extent of these adaptations in skeletal muscle differ slightly between men and women. (C) 2009 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.