INFLUENCE OF DIURETIC-INDUCED DEHYDRATION ON COMPETITIVE RUNNING PERFORMANCE
INFLUENCE OF DIURETIC-INDUCED DEHYDRATION ON COMPETITIVE RUNNING PERFORMANCE
复制标题
DOI：
10.1249/00005768-198508000-00009
复制
发表时间：
1985-01-01
影响因子：
4.1
通讯作者：
FINK, WJ
中科院分区：
文献类型：
--
作者：
ARMSTRONG, LE;COSTILL, DL;FINK, WJ
使用利尿剂（40 毫克呋塞米）来研究脱水 (D) 对竞技跑步表现的影响，且事先没有热应激或运动应激。八名男子参加了 1500、5000 和 10,000 米的随机比赛，他们的水分正常 (H)，平均血浆容量分别减少了 9.9%、12.3 和 9.9%。由于体内水分减少（体重变化 = -1.9、-1.6 和 -2.1%），在 1500 m、5000 m 和 10,000 m 试验中，跑道上的平均户外表现时间分别增加了 0.16 分钟、1.31 分钟（P < 0.05）和 2.62 分钟（P < 0.05）。脱水导致的跑步表现下降与体重变化（r = -0.79、-0.65 和 -0.40）的相关性比与尿量或血浆量差异的相关性更强。此外，研究对象在 H 和 D 期间进行次最大和最大跑步机运动（血浆容量平均变化 = -7.1%）。 D 的结果是次最大和最大摄氧量均未发生显着改变 (P > 0.05)。在 D 跑步机试验期间，跑步机运行到意志力竭的平均时间减少了 41.4 秒 (P < 0.05)。尽管次最大和最大摄氧量没有改变，但较长持续时间（5000 和 10,000 m）的比赛中的竞技表现显然比较短的 1500 m 赛事受到 D 的影响更大。
A diuretic drug (40 mg of furosemide) was utilized to study the effects of dehydration (D) on competitive running performance, without prior thermal or exercise stress. Eight men competed in randomized races of 1500, 5000 and 10,000 m, while normally hydrated (H) and with mean plasma volume reductions of 9.9, 12.3 and 9.9%, respectively. As a result of the reduced body water (change in body wt = -1.9, -1.6 and -2.1%), mean outdoor performance times on a running track increased 0.16 min, 1.31 min (P < 0.05) and 2.62 min (P < 0.05) in the 1500 m, 5000 m and 10,000 m trials. Running performance decrements due to dehydration were more strongly correlated with changes in body wt (r = -0.79, -0.65, and -0.40) than with urine volume or plasma volume differences. In addition, subjects were studied during submaximal and maximal treadmill exercise while H and D (mean change in plasma volume = -7.1%). Neither submaximal nor maximal O2 uptake was significantly altered (P > 0.05) as a consequence of D. Mean treadmill run time to volitional exhaustion was reduced by 41.4 s (P < 0.05) during the D treadmill trial. Competitive performance in trials of long duration (5000 and 10,000 m) apparently was affected to a greater extent by D than the shorter 1500 m event, even though submaximal and maximal O2 uptake was not altered.