Human Performance Laboratory, University of Wisconsin - Eau Claire, Eau Claire, WI USA.
J Sports Sci Med. 2006 Dec 15;5(4):662-71. eCollection 2006.
The primary purpose of the study was to determine the relationships between %HRR vs. %VO2R and %HRR vs. %VO2max during maximal elliptical crosstrainer (ECT) exercise. A secondary aim was to compare the %HRR vs. %VO2R and %HRR vs. %VO2max relationships between maximal ECT and treadmill (TM) exercise. Adult subjects (n = 48) completed a maximal exercise test on the ECT, with a subgroup (N = 24) also performing a maximal exercise test on the TM. Continuous HR and VO2 data were analyzed via linear regression to determine y-intercept and slope values for %HRR vs. %VO2R and %HRR vs. %VO2max. Student t-tests were used to determine whether the mean y-intercept and slope values differed from the line of identity (y-intercept = 0, slope = 1). For each group, both the y-intercept and slope for %HRR vs. %VO2R fit the line of identity. Conversely, for all groups both the y-intercept and slope for %HRR vs. %VO2max were significantly different (p < 0.001) from the line of identity (y-intercept ≠ 0, slope ≠ 1). In comparing the regressions of %HRR vs. %VO2R between exercise modes, there were no significant differences (p > 0.05) for either y-intercept (ECT = 0.3 vs. TM = -0.3, p = 0.435) or slope (ECT = 1.01 vs. TM = 1.00, p = 0.079) values. In agreement with previous research on TM and cycle exercise, it was found that %HRR is more closely aligned with %VO2R, rather than %VO2max during ECT exercise. Additionally, it was found that the regressions of %HRR vs. %VO2R and %HRR vs. %VO2max were equivalent between the ECT and TM. Key PointsThe present study showed that %HRR is aligned with %VO2R, not %VO2max, during maximal ellipitcal crosstrainer exercise.It was found that the relationships between %HRR vs. %VO2R and %HRR vs. %VO2max were equivalent between the ellipitcal crosstrainer and treadmill.This study revealed that the elliptical crosstrainer produced similar maximal physiological values (VO2max, HRmax, RERmax) compared to treadmill running during VO2max testing.
本研究的主要目的是确定在最大椭圆交叉训练器（ECT）运动中，%HRR 与 %VO2R 和 %HRR 与 %VO2max 之间的关系。次要目的是比较最大 ECT 和跑步机（TM）运动中 %HRR 与 %VO2R 和 %HRR 与 %VO2max 关系。成年受试者（n = 48）在 ECT 上完成了最大运动测试，其中一个亚组（N = 24）也在 TM 上完成了最大运动测试。通过线性回归分析连续 HR 和 VO2 数据，确定 %HRR 与 %VO2R 和 %HRR 与 %VO2max 的 y 截距和斜率值。学生 t 检验用于确定平均 y 截距和斜率值是否与身份线（y 截距= 0，斜率= 1）不同。对于每个组，%HRR 与 %VO2R 的 y 截距和斜率都符合身份线。相反，对于所有组，%HRR 与 %VO2max 的 y 截距和斜率都与身份线明显不同（p < 0.001）（y 截距≠0，斜率≠1）。在比较两种运动模式下的 %HRR 与 %VO2R 的回归时，y 截距（ECT = 0.3 与 TM = -0.3，p = 0.435）或斜率（ECT = 1.01 与 TM = 1.00，p = 0.079）值均无显著差异（p > 0.05）。与 TM 和循环运动的先前研究一致，发现 ECT 运动时，%HRR 与 %VO2R 更接近，而不是与 %VO2max 更接近。此外，还发现 ECT 和 TM 之间的 %HRR 与 %VO2R 和 %HRR 与 %VO2max 的回归是等效的。主要观点本研究表明，在最大椭圆交叉训练器运动中，%HRR 与 %VO2R 而不是 %VO2max 一致。发现 %HRR 与 %VO2R 和 %HRR 与 %VO2max 之间的关系在椭圆交叉训练器和跑步机之间是等效的。这项研究表明，在进行 VO2max 测试时，与跑步机跑步相比，椭圆交叉训练器产生了类似的最大生理值（VO2max、HRmax、RERmax）。
