Anderson R A, Bryden N A, Polansky M M, Deuster P A
Nutrient Requirements and Functions Laboratory, Beltsville Human Nutrition Research Center, US Department of Agriculture, Maryland 20705, USA.
Analyst. 1995 Mar;120(3):867-70. doi: 10.1039/an9952000867.
Acute exercise effect on urinary losses and serum concentrations of Cu and Zn of eight moderately trained and five untrained male runners were determined to ascertain effects of training on trace metal responses owing to acute exercise. Maximum oxygen uptake (VO2 max) of the moderately trained subjects was 47.3 +/- 2.3 and that of the untrained subjects was 34.7 +/- 1.9 ml kg-1 min-1. Subjects consumed a controlled diet to minimize changes due to dietary intake. Immediately following acute exercise at 90% of VO2 max to exhaustion (30 s exercise and 30 s rest periods), serum Zn and Cu levels of moderately trained and untrained subjects were elevated. Serum Zn of moderately trained subjects 2 h post-exercise was lower than before exercise (13.5 +/- 0.05 versus 12.5 +/- 0.05 mumol 1-1, a similar trend was observed for untrained subjects. Serum concentrations of both groups were similar to pre-exercise levels 2 h post-exercise. Changes in urinary losses of Zn and Cu, associated with the acute strenuous exercise of short duration employed in this study, were not significantly different. These data demonstrate that increases in serum Cu and Zn following acute exercise are independent of training status for moderately trained and untrained men.
测定了8名中等训练水平和5名未经训练的男性跑步者急性运动对尿中铜和锌流失以及血清中铜和锌浓度的影响，以确定训练对急性运动引起的微量金属反应的影响。中等训练水平受试者的最大摄氧量（VO2 max）为47.3±2.3，未经训练受试者的最大摄氧量为34.7±1.9 ml·kg-1·min-1。受试者食用控制饮食以尽量减少饮食摄入引起的变化。在以VO2 max的90%进行急性运动至力竭（30秒运动和30秒休息周期）后，中等训练水平和未经训练受试者的血清锌和铜水平均升高。中等训练水平受试者运动后2小时的血清锌低于运动前（13.5±0.05对12.5±0.05 μmol·L-1），未经训练受试者也观察到类似趋势。两组的血清浓度在运动后2小时与运动前水平相似。本研究中采用的短时间急性剧烈运动相关的锌和铜尿流失变化无显著差异。这些数据表明，急性运动后血清铜和锌的增加与中等训练水平和未经训练男性的训练状态无关。
