Sweat lactate response between males with high and low aerobic fitness
Sweat lactate response between males with high and low aerobic fitness
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DOI：
10.1007/s00421-003-0968-2
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发表时间：
2004-01-01
影响因子：
3
通讯作者：
Tucker, DC
中科院分区：
文献类型：
--
作者：
Green, JM;Pritchett, RC;Tucker, DC
汗液乳酸间接反映了小汗腺的代谢情况。然而，有氧健身对汗液乳酸的潜在影响尚不清楚。六名具有高有氧适能的男性 [峰值耗氧量 (V.O(2)peak)：61.6 (2.5) ml.kg(-1).min(-1)] 和七名具有低有氧适能的男性 [V.O(2)peak：41.8 (6.4) ml.kg(-1).min(-1)] 完成了最大强度循环试验，然后在另一天进行了 60 分钟 在 30°C 湿球温度环境中循环 (60 rev.min(-1))。强度在通气阈值的 90% 时进行个体化（V.(E)/V.O-2 增加，但没有同时 V.(E)/V.CO2 增加）。每 10 分钟从腰部收集一次汗液样本并分析乳酸浓度。在任何时间点，汗液乳酸浓度的组间出汗率 (SR) 均显着更高 (p0.05)。目前的结果显示，高度健康（相对于低健康水平）的男性出汗率更高，这与之前的文献一致。然而，有氧健身和随后的 SR 变化似乎不会影响男性汗液乳酸浓度。
Sweat lactate indirectly reflects eccrine gland metabolism. However the potential influence of aerobic fitness on sweat lactate is not well-understood. Six males with high aerobic fitness [peak oxygen consumption (V.O(2)peak): 61.6 (2.5) ml.kg(-1).min(-1)] and seven males with low aerobic fitness [V.O(2)peak: 41.8 (6.4) ml.kg(-1).min(-1)] completed a maximal exertion cycling trial followed on a different day by 60 min of cycling (60 rev.min(-1)) in a 30degreesC wet bulb globe temperature environment. Intensity was individualized at 90% of the ventilatory threshold (V.(E)/V.O-2 increase with no concurrent V.(E)/V.CO2 increase). Sweat samples were collected from the lumbar region every 10 min and analyzed for lactate concentration. Sweat rate (SR) was significantly greater (p0.05) between groups for sweat lactate concentration at any time point. Current results show highly fit (vs. low fitness level) males have a greater sweat rate which is consistent with previous literature. However aerobic fitness and subsequent variations in SR do not appear to influence sweat lactate concentrations in males.