Haug R C, Porcari J P, Brice G, Terry L
La Crosse Exercise and Health Program, University of Wisconsin-La Crosse, 54601, USA.
Med Sci Sports Exerc. 1999 Apr;31(4):619-23. doi: 10.1097/00005768-199904000-00021.
The purpose of this study was to develop a valid VO2max testing protocol for the NordicTrack (NT) cross-country ski simulator.
To be considered a valid protocol, it was felt that the maximal values obtained from the cross-country skiing (XC) test should be similar to those obtained from a maximal graded treadmill (TM) test. During pilot testing, cadence (strides x min(-1), arm resistance, leg resistance, and grade were individually manipulated to study the effect on measured VO2. A protocol for the NT was developed from the findings of the pilot study, and the results were compared with a TM VO2max test utilizing the Bruce protocol. Thirteen male and 15 female volunteers (aged 22-49 yr) served as subjects and completed both tests in random order. The maximal physiological responses from the XC and TM max tests were compared using paired t-tests.
There were no significant (P>0.05) differences in maximal VO2 (42.5 vs. 42.6 mL x kg(-1) x min(-1); 3.27 vs. 3.31 L x min(-1)), heart rates (HR; 185 vs. 185 bpm), or ratings of perceived exertion (RPE; 19.0 vs. 19.1) for the XC and TM tests. There were significant (P<0.05) differences for maximal VE (124.5 vs. 118.6 L x min(-1)) and respiratory exchange ratio (RER; 1.15 vs. 1.21) between the XC and TM tests, respectively.
It was concluded that the testing protocol developed for the NT XC simulator is valid and can be expected to elicit similar maximal values when compared with TM testing.
本研究的目的是为诺迪克轨迹（NT）越野滑雪模拟器制定一种有效的最大摄氧量（VO2max）测试方案。
为了被视为一种有效的方案，人们认为从越野滑雪（XC）测试中获得的最大值应与从最大坡度跑步机（TM）测试中获得的最大值相似。在初步测试期间，分别对步频（每分钟步数，步/分钟）、手臂阻力、腿部阻力和坡度进行调整，以研究其对测量的VO2的影响。根据初步研究的结果制定了NT的测试方案，并将结果与采用布鲁斯方案的TM VO2max测试进行比较。13名男性和15名女性志愿者（年龄22 - 49岁）作为受试者，随机顺序完成两项测试。使用配对t检验比较XC和TM最大测试的最大生理反应。
XC和TM测试在最大VO2（42.5对42.6毫升·千克⁻¹·分钟⁻¹；3.27对3.31升·分钟⁻¹）、心率（HR；185对185次/分钟）或主观用力程度分级（RPE；19.0对19.1）方面无显著（P>0.05）差异。XC和TM测试在最大每分通气量（VE；124.5对118.6升·分钟⁻¹）和呼吸交换率（RER；1.15对1.21）方面分别存在显著（P<0.05）差异。
得出的结论是，为NT XC模拟器制定的测试方案是有效的，与TM测试相比，预计能得出相似的最大值。
