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Rehabilitation Practice and Science

Translated Title

心肺疾病病人其心跳速率轉折點與無氧呼吸閾值之相關性探討

Abstract

Background: Exercise training is an efficient way to improve physical performance. Training at an intensity of a certain level of the anaerobic threshold (AT) is a successful and frequently adopted method to increase both maximal and submaximal exercise capacity. Several methods are currently used to detect the AT. Analysis of the respiratory gas exchange allows identification of the AT and is currently advocated as the ＂gold standard＂. The heart rate turning point (HRTP) is a downward or upward change from the linear HR work relationship evidenced during incremental exercise testing and has been reported to coincide with AT. Purpose: The aim of this study was to identify the AT using direct observation of the HRTP, and to evaluate the differences (HR and oxygen consumption, VO_2) in the AT between the gaseous analyses and the HRTP method. Methods: This was a retrospective study. We reviewarticleed the charts of patients who came for our cardiopulmonary exercise testing clinic from January 2008 to December 2012. The oxygen consumption and HR at AT were recorded using two different methods, accordingly. Two physiatrists were asked to identify the HRTP with direct visual inspection; if there was disagreement, a third physiatrist was enlisted. Results: There was no significant difference between HR and oxygen consumption at the respiratory compensation point and the HRTP (P ＞ 0.050). Strong correlation between the HR at the RCP and HRTP was found (r = 0.914). Conclusion: Identifying the AT using direct visual inspection of the HRTP is feasible on occasions in where the necessary equipment is not available. Using the HRTP is a simpler way to identify the AT so as to approach the desired exercise intensity.

Language

Traditional Chinese

First Page

243

Last Page

249

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