修改用于预测男性大学生最大摄氧量的福克斯协议。

Modification of Fox protocol for prediction of maximum oxygen uptake in male university students.

作者信息

Bandyopadhyay Amit, Pal Sangita

机构信息

Sports and Exercise Physiology Laboratory, Department of Physiology, University of Calcutta, University College of Science and Technology, Kolkata, India.

出版信息

Work. 2015 Jan 1;50(2):205-11. doi: 10.3233/WOR-141824.

DOI:10.3233/WOR-141824

PMID:24448010

Abstract

BACKGROUND

Direct estimation of VO₂max involves labourious, exhaustive, hazardous, time consuming and expensive experimental protocols. Hence, application of various indirect protocols for prediction of VO₂max has become popular, subject to proper population-specific standardisation of the indirect protocol.

OBJECTIVES

Application of Fox (1973) protocol in male sedentary university students of Kolkata, India led to premature fatigue in their leg muscles that hindered the muscular activity leading to inability in completing the exercise. The present study was aimed at modifying and validating the Fox (1973) protocol with a convenient workload of 110 W (i.e., modified Fox test or MFT) in the said population.

METHODS

Ninety (90) sedentary male students were recruited by simple random sampling from the University of Calcutta, India and they were randomly assigned into study group (n=60) and confirmatory group (n=30). VO₂max was directly estimated by Scholander micro-gas analysis after incremental bicycle exercise. Predicted VO₂max (PVO₂max) was computed from MFT by using the submaximal heart rate (HR(sub).

RESULTS

In the Study Group VO₂max (2216.63 ± 316.77 mL.min⁻¹ was significantly different (P< 0.001) from PVO₂max (3131.73 ± 234.32 mL.min⁻¹ measured by using the equation of Fox (1973). Simple and multiple regression equations have been computed for prediction of VO₂max from HR(sub) and physical parameters. Application of these norms in the confirmatory group depicted insignificant difference between VO₂max and PVO₂max with substantially small limits of agreement and lower values of SEE.

CONCLUSION

The modified regression norms are therefore recommended for use in MFT for accurate assessment of VO₂max in the studied population.

摘要

背景

直接估计最大摄氧量（VO₂max）涉及繁琐、费力、危险、耗时且昂贵的实验方案。因此，在对间接方案进行适当的特定人群标准化的前提下，应用各种间接方案来预测VO₂max已变得很普遍。

目的

在印度加尔各答久坐不动的男性大学生中应用福克斯（1973年）方案时，他们的腿部肌肉出现过早疲劳，这阻碍了肌肉活动，导致无法完成运动。本研究旨在对福克斯（1973年）方案进行修改和验证，在上述人群中采用110瓦的便捷工作量（即改良福克斯测试或MFT）。

方法

通过简单随机抽样从印度加尔各答大学招募了90名久坐不动的男性学生，并将他们随机分为研究组（n = 60）和验证组（n = 30）。在进行递增式自行车运动后，通过 Scholander 微量气体分析法直接估计VO₂max。使用次最大心率（HR(sub)）通过MFT计算预测VO₂max（PVO₂max）。

结果

在研究组中，VO₂max（2216.63 ± 316.77 mL·min⁻¹）与使用福克斯（1973年）公式测得的PVO₂max（3131.73 ± 234.32 mL·min⁻¹）有显著差异（P < 0.001）。已经计算了从HR(sub)和身体参数预测VO₂max的简单和多元回归方程。在验证组中应用这些标准时，VO₂max和PVO₂max之间的差异不显著，一致性界限相当小，SEE值较低。