UNIEURO University Center, Brasília, Brazil.
Int J Sports Med. 2011 Feb;32(2):117-21. doi: 10.1055/s-0030-1268490. Epub 2010 Dec 16.
The purpose of this study was to test the concurrent validity of the ICBE compared to the Monark(®) cycle ergometer by indirect dynamic calibration. 42 men were randomly submitted to 2 maximal stress tests with increments of 50 W at 2-min intervals. One test was performed on the Monark(®) bicycle (834/E) and the other on the ICBE. Cardiovascular, perceived exertion and hemodynamic responses were compared between the 2 bicycles. No differences (p>0.05) were observed in resting heart rate (HR), maximum HR, peak oxygen uptake (VO(2P) L·min(-1) and VO(2P) mL·kg(-1)·min(-1)), and number of stages completed. High correlations (r>0.85) were found between HR and VO (2P). Residual analysis indicated strong agreement between the 2 cycle ergometers in terms of VO(2P) L·min(-1) [-0.36-0.30] and VO(2P) mL·kg(-1)·min(-1) [-4.98-4.46]. Residual dispersion (r=0.25 for both) showed that the mathematical differences in VO(2P) L·min(-1) and VO(2P) mL·kg(-1)·min(-1) between cycle ergometers were independent. The correlation coefficient (r) and coefficient of determination (R(2)) between VO(2P) L·min(-1) (r=0.90; R (2)=0.80) and VO(2P) mL·kg(-1)·min(-1) (r=0.90; R(2)=0.81) obtained for the 2 cycle ergometers were high, whereas the standard error of the estimate was low (0.186 L·min(-1) and 2.56 mL·kg(-1)·min(-1), respectively). The ICBE presents concurrent validity for use in submaximal and maximal cardiopulmonary tests.
本研究旨在通过间接动力校准测试比较 ICBE 与 Monark®（®）测功计的同时效度。42 名男性被随机分为两组，每组进行 2 次最大压力测试，间隔 2 分钟增加 50W。一组在 Monark®（®）自行车（834/E）上进行，另一组在 ICBE 上进行。比较了两种自行车之间的心血管、感觉用力和血液动力学反应。静息心率（HR）、最大 HR、峰值摄氧量（VO（2P）L·min（-1）和 VO（2P）mL·kg（-1）·min（-1））和完成的阶段数无差异（p>0.05）。HR 和 VO（2P）之间存在高度相关性（r>0.85）。残差分析表明，两种测功计在 VO（2P）L·min（-1）[-0.36-0.30]和 VO（2P）mL·kg（-1）·min（-1）[-4.98-4.46]方面具有很强的一致性。残差分散（两者均为 r=0.25）表明，两种测功计之间 VO（2P）L·min（-1）和 VO（2P）mL·kg（-1）·min（-1）的数学差异是独立的。VO（2P）L·min（-1）（r=0.90；R（2）=0.80）和 VO（2P）mL·kg（-1）·min（-1）（r=0.90；R（2）=0.81）的相关系数（r）和决定系数（R（2））对于两种测功计均较高，而估计的标准误差较低（分别为 0.186 L·min（-1）和 2.56 mL·kg（-1）·min（-1））。ICBE 具有在亚最大和最大心肺测试中使用的同时有效性。
