Kieu Nguyen Thi Van, Jung Su-Jin, Shin Sang-Wook, Jung Han-Wool, Jung Eun-Soo, Won Yu Hui, Kim Young-Gon, Chae Soo-Wan
Clinical Trial Center for Functional Foods, Chonbuk National University Hospital, Jeonju, Korea.
Department of Pharmacology, Jeonbuk National University Medical School, Jeonju, Korea.
J Lifestyle Med. 2020 Jan 31;10(1):21-29. doi: 10.15280/jlm.2020.10.1.21.
Cardiorespiratory fitness (CRF) is a fundamental component of physical fitness. While maximal oxygen uptake (VOmax) is the gold standard for quantifying CRF, standard maximal exercise tests using direct measurements VOmax are dependent on the availability of laboratory equipment, and thereby expensive and time consuming. Recently, an equation was formulated to indirectly estimate VOmax using the YMCA 3-minute step test.
The study included 15 Korean (KR) and 15 Vietnamese (VN) healthy adults aged 19-35 years. All subjects completed a YMCA 3-minute step test (YMCA 3MST) and a maximal exercise treadmill test to predict VOmax and VOmax measures, respectively.
There was a significant relationship between VOmax predicted from the YMCA 3MST and actual VOmax measurements from the treadmill test (r = 0.80, p < 0.0001; KR group: r = 0.81, p < 0.0001; VN group: r = 0.93, p < 0.0001). Bland-Altman analysis revealed statistical agreement between tests, although there was a systematic overestimation of 3.36 mL/kg/min for the KR group.
The equation for predicting VOmax from the YMCA 3MST was validated among the study subjects. However, future research should explore the validity and reliability of the YMCA 3MST equation for estimating VOmax in other populations.
心肺适能（CRF）是体能的一个基本组成部分。虽然最大摄氧量（VOmax）是量化CRF的金标准，但使用直接测量VOmax的标准最大运动测试依赖于实验室设备的可用性，因此成本高昂且耗时。最近，有人制定了一个方程，使用YMCA 3分钟台阶试验间接估计VOmax。
该研究纳入了15名年龄在19至35岁之间的韩国（KR）健康成年人和15名越南（VN）健康成年人。所有受试者分别完成了YMCA 3分钟台阶试验（YMCA 3MST）和最大运动跑步机试验，以预测VOmax和测量VOmax。
通过YMCA 3MST预测的VOmax与跑步机试验实际测量的VOmax之间存在显著相关性（r = 0.80，p < 0.0001；KR组：r = 0.81，p < 0.0001；VN组：r = 0.93，p < 0.0001）。Bland-Altman分析显示测试之间具有统计学一致性，尽管KR组存在3.36 mL/kg/min的系统性高估。
在研究对象中验证了通过YMCA 3MST预测VOmax的方程。然而，未来的研究应探索YMCA 3MST方程在估计其他人群VOmax方面的有效性和可靠性。
