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Aerosport KB1-C便携式代谢系统的验证

Validation of Aerosport KB1-C portable metabolic system.

作者信息

King G A, McLaughlin J E, Howley E T, Bassett D R, Ainsworth B E

机构信息

Exercise Science Unit, University of Tennessee, Knoxville 37996-2700, USA.

出版信息

Int J Sports Med. 1999 Jul;20(5):304-8. doi: 10.1055/s-2007-971135.

Abstract

The purpose of this study was to test the validity of the Aerosport KB1-C portable metabolic measurement system against the criterion Douglas bag method. During cycle ergometry, simultaneous measurements of minute ventilation (VE), oxygen consumption (VO2), and carbon dioxide production (VCO2) were made at rest and at power outputs of 50, 100, 150, 200, and 250 W. No significant differences (P > 0.05) were observed for VE, VO2, and VCO2 between the KB1-C and Douglas bag at 100, 150, and 250 W, while the KB1-C was significantly different (P < 0.05) from Douglas bag values at rest, 50, and 200 W. R values were found to be significantly different (P < 0.05) at 100, 150, and 200 W, while no significant differences were observed at rest, 50, and 250 W. The fractional concentrations of oxygen (FEO2) and carbon dioxide (FECO2) were not significantly different at 50, 100, 200, and 250 W while values at rest and 150 W were significantly different (P < 0.05). These findings show that the Aerosport KB1-C portable metabolic system is acceptable for measuring oxygen uptake in the range of 1.5 and 3.5 L x min(-1), using the medium flow pneumotach setting. At lower intensities, the low-flow pneumotach setting provides acceptable results.

摘要

本研究的目的是对照标准的道格拉斯袋法检验Aerosport KB1-C便携式代谢测量系统的有效性。在自行车测力计测试过程中,在静息状态以及功率输出为50、100、150、200和250 W时,同时测量了分钟通气量(VE)、耗氧量(VO2)和二氧化碳生成量(VCO2)。在100、150和250 W时,KB1-C与道格拉斯袋在VE、VO2和VCO2方面未观察到显著差异(P>0.05),而在静息状态、50和200 W时,KB1-C与道格拉斯袋的值存在显著差异(P<0.05)。发现在100、150和200 W时R值存在显著差异(P<0.05),而在静息状态、50和250 W时未观察到显著差异。在50、100、200和250 W时,氧分数浓度(FEO2)和二氧化碳分数浓度(FECO2)没有显著差异,而在静息状态和150 W时的值存在显著差异(P<0.05)。这些发现表明,使用中流量呼吸流速计设置时,Aerosport KB1-C便携式代谢系统在测量1.5至3.5 L x min(-1)范围内的摄氧量时是可接受的。在较低强度下,低流量呼吸流速计设置可提供可接受的结果。

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