Reliability of peak O2 uptake and O2 uptake kinetics in step exercise tests in healthy subjects

被引：8

作者：

Mueller, Paulo de Tarso ^{[1
]}

Christofoletti, Gustavo ^{[1
]}

Zagatto, Alessandro Moura ^{[2
]}

Paulin, Fernanda Viana ^{[1
]}

Neder, J. Alberto ^{[3
,4
]}

机构：

[1] Univ Fed Rio Grande do Sul, Lab Resp Pathophysiol LAFIR, BR-79080090 Campo Grande, MS, Brazil

[2] Univ Estadual Paulista, UNESP, Dept Phys Educ, Fac Sci, BR-17033360 Sao Paulo, Brazil

[3] Queens Univ, Dept Med, Div Resp & Crit Care Med, Kingston, ON K7L 2V6, Canada

[4] Kingston Gen Hosp, Kingston, ON K7L 2V6, Canada

来源：

RESPIRATORY PHYSIOLOGY & NEUROBIOLOGY | 2015年 / 207卷

关键词：

Aerobic; Exercise; Kinetics; Oxygen consumption; Reliability; Step tests; OXYGEN-UPTAKE KINETICS; ON-TRANSIENT; PHYSIOLOGICAL-RESPONSES; PULMONARY-HYPERTENSION; STATISTICAL-METHODS; AEROBIC POWER; OFF-TRANSIENT; COPD; REPRODUCIBILITY; ONSET;

D O I：

10.1016/j.resp.2014.12.001

中图分类号：

Q4 [生理学];

学科分类号：

071003 ;

摘要：

To date little is known about the reliability of peak oxygen consumption (VO2pEAK) in incremental metronome paced step tests (1ST) and the reliability of on-kinetics VO2 has never been studied. We aimed to study the reliability of both tests. Eleven healthy subjects performed two ISTs until exhaustion. On two different days two duplicate 4 min constant metronome paced step tests (CST) were performed. VO2PEAK, mean response time (MRT) and phase II time constant (tau) were tested for reproducibility using the paired t-tests, in addition to the limits of agreement (LOA) and within subject coefficient of variation (COV). With a 95% LOA of 0.38 to 0.26 L min(-1), -8.7 to 9.1 s and -9.9 to 10.5 s they exhibit a COV of 3%, 4.5% and 6.9% for VO2PEAK, MRT and tau respectively. ST are sufficiently reliable for maximal and submaximal aerobic power assessments in healthy subjects and new studies of oxygen uptake kinetics in selected patient groups are warranted. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：7 / 13

页数：7

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