Influence of endurance running and recovery diet on intramyocellular lipid content in women:: a 1H NMR study
Influence of endurance running and recovery diet on intramyocellular lipid content in women:: a 1H NMR study
复制标题
DOI：
10.1152/ajpendo.2002.282.1.e95
复制
发表时间：
2002-01-01
影响因子：
5.1
通讯作者：
Hunter, GR
中科院分区：
文献类型：
--
作者：
Larson-Meyer, DE;Newcomer, BR;Hunter, GR
采用随机分配的交叉设计，我们评估了7名女性跑步者在2小时跑步机跑步后肌内脂质储存（IMCL）从基线的变化[67%的最大摄氧量（（V）超过点O-2 max）]以及运动后极低脂肪（10%的能量，LFAT）或中等脂肪（35%的能量，MFAT）恢复饮食对IMCL的恢复。IMCL测量比目鱼肌使用水抑制H-1-NMR光谱成像之前（基线），之后，和类似的22小时和70小时后运行。IMCL在耐力跑期间下降了约25%（P < 0.05），运动后恢复依赖于膳食脂肪含量（P = 0.038，膳食x时间交互作用）。MFAT恢复饮食的消费允许IMCL商店恢复到基线的22小时和超调（与基线相比）70小时后运动。相比之下，即使在耐力跑后70小时，LFAT恢复饮食的消耗也不允许IMCL储存恢复到基线（在70小时时P < 0.01）。这些结果表明，一定量的膳食脂肪是必需的，以补充IMCL耐力跑后。
Using a randomly assigned crossover design, we evaluated the change in intramyocellular lipid stores (IMCL) from baseline after a 2-h treadmill run [67% of maximal oxygen uptake ((V) over dot O-2 max)] and the recovery of IMCL in response to a postexercise very low-fat (10% of energy, LFAT) or moderate-fat (35% of energy, MFAT) recovery diet in seven female runners. IMCL was measured in soleus muscle by use of water-suppressed H-1-NMR spectroscopic imaging before (baseline), after, and similar to 22 h and 70 h after the run. IMCL fell by similar to 25% (P < 0.05) during the endurance run and was dependent on dietary fat content for postexercise recovery (P = 0.038, diet x time interaction). Consumption of the MFAT recovery diet allowed IMCL stores to return to baseline by 22 h and to overshoot (vs. baseline) by 70 h postexercise. In contrast, consumption of the LFAT recovery diet did not allow IMCL stores to return to baseline even by 70 h after the endurance run (P < 0.01 at 70 h). These results suggest that a certain quantity of dietary fat is required to replenish IMCL after endurance running.