Universidade Federal do Rio de Janeiro, RJ, Brazil.
Arq Bras Cardiol. 2010 Jun;94(6):763-70. doi: 10.1590/s0066-782x2010005000054. Epub 2010 May 28.
VO2 may be predicted with base on anthropometric and physiological parameters for determined populations.
To propose models for submaximal and maximal VO2 prediction in young Brazilian adults.
A total of 137 volunteers (92 men) underwent graded maximal exercise test (GXT) in a cycle ergometer (MonarkTM, Br). Gas exchange and respiratory measurements were performed in an open circuit (AerosportTM TEEM 100, USA). In another group, 13 volunteers underwent GXT and a square wave test (SWT) in order to evaluate the external validity of Neder et al's formula, ACSM's formula, and of Astrand-Ryhming nomogram. The study design chosen was a cross-validation and the significance level was set at p < 0.05.
For men during submaximal exercises, a mathematical model was deduced with base on workload, body mass, and age, which explained 89% of the VO2 variation, with SEE (standard error of the estimate) = 0.33 l.min-1. For the maximum load in the male group, another model with the same variables explained 71% of VO2 variation, with SEE = 0.40 l.min-1. For women, 93% of VO2 variation could be explained, with SEE = 0.17 l.min-1, both in submaximal and maximal exercise, with only one equation by use e of the same independent variables.
The models derived in the present study proved to be accurate to predict submaximal and maximal VO2 in young Brazilian adults. (Arq Bras Cardiol. 2010; [online]. ahead print, PP.0-0).
可以根据特定人群的人体测量学和生理学参数来预测 VO2。
提出适用于年轻巴西成年人亚极量和极量 VO2 预测的模型。
共有 137 名志愿者（92 名男性）在自行车测力计（MonarkTM，Br）上进行了分级最大运动测试（GXT）。在开路中进行了气体交换和呼吸测量（AerosportTM TEEM 100，美国）。在另一组中，13 名志愿者进行了 GXT 和方波测试（SWT），以评估 Neder 等人的公式、ACSM 公式和 Astrand-Ryhming 标度图的外部有效性。选择的研究设计是交叉验证，显著性水平设置为 p<0.05。
对于男性亚极量运动，基于工作量、体重和年龄推导了一个数学模型，该模型解释了 89%的 VO2 变化，SEE（估计的标准误差）=0.33 l.min-1。对于男性组的最大负荷，另一个具有相同变量的模型解释了 71%的 VO2 变化，SEE=0.40 l.min-1。对于女性，在亚极量和极量运动中，93%的 VO2 变化可以用同一个独立变量的相同方程来解释，SEE=0.17 l.min-1。
本研究得出的模型被证明可以准确预测年轻巴西成年人的亚极量和极量 VO2。（Arq Bras Cardiol. 2010; [在线]。提前印刷，PP.0-0）。
