Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense M,Denmark.
Department of Diabetes and Endocrinology, University Hospital of Southern Denmark, Esbjerg,Denmark.
Int J Sports Physiol Perform. 2023 Jun 8;18(8):861-865. doi: 10.1123/ijspp.2022-0471. Print 2023 Aug 1.
Laboratory assessment of maximal oxygen uptake (V˙O2max) is physically and mentally draining for the athlete and requires expensive laboratory equipment. Indirect measurement of V˙O2max could provide a practical alternative to laboratory testing.
To examine the relationship between the maximal power output (MPO) in an individualized 7 × 2-minute incremental test (INCR-test) and V˙O2max and to develop a regression equation to predict V˙O2max from MPO in female rowers.
Twenty female club and Olympic rowers (development group) performed the INCR-test on a Concept2 rowing ergometer to determine V˙O2max and MPO. A linear regression analysis was used to develop a prediction of V˙O2max from MPO. Cross-validation analysis of the prediction equation was performed using an independent sample of 10 female rowers (validation group).
A high correlation coefficient (r = .94) was found between MPO and V˙O2max. The following prediction equation was developed: V˙O2max (mL·min-1) = 9.58 × MPO (W) + 958. No difference was found between the mean predicted V˙O2max in the INCR-test (3480 mL·min-1) and the measured V˙O2max (3530 mL·min-1). The standard error of estimate was 162 mL·min-1, and the percentage standard error of estimate was 4.6%. The prediction model only including MPO, determined during the INCR-test, explained 89% of the variability in V˙O2max.
The INCR-test is a practical and accessible alternative to laboratory testing of V˙O2max.
实验室评估最大摄氧量（V˙O2max）对运动员来说既耗费体力又耗费脑力，且需要昂贵的实验室设备。间接测量 V˙O2max 可以为实验室测试提供一种实用的替代方法。
检验在个性化的 7×2 分钟递增测试（INCR-test）中最大功率输出（MPO）与 V˙O2max 的关系，并为女性赛艇运动员建立从 MPO 预测 V˙O2max 的回归方程。
20 名俱乐部和奥林匹克赛艇运动员（发展组）在Concept2 划船测功仪上进行 INCR-test，以确定 V˙O2max 和 MPO。使用线性回归分析建立从 MPO 预测 V˙O2max 的预测方程。使用另一个独立的 10 名女性赛艇运动员（验证组）的样本进行预测方程的交叉验证分析。
MPO 与 V˙O2max 之间存在高度相关系数（r =.94）。建立了以下预测方程：V˙O2max（mL·min-1）=9.58×MPO（W）+958。在 INCR-test 中预测的平均 V˙O2max（3480 mL·min-1）与实测的 V˙O2max（3530 mL·min-1）之间没有差异。估计的标准误差为 162 mL·min-1，估计的标准误差百分比为 4.6%。仅包括在 INCR-test 中确定的 MPO 的预测模型，解释了 V˙O2max 变异性的 89%。
INCR-test 是实验室 V˙O2max 测试的一种实用且易于实施的替代方法。
