氣喘幼童心肺功能測試模式之建立

The Incremental Cardiopulmonary Exercise-testing Protocol in Asthmatic Children

黎俊彥(Alex J. Y. Lee) ； 林俊宏(Chun-Hong Lin) ； 朱斯鴻(Szu-Hung Chu) ； 謝錦城(City C. C. Hsieh)

《大專體育學刊》 9卷3期 (2007/09) Pp. 117-126

https://doi.org/10.5297/ser.200709_9(3).0011

摘要

本研究目的為建立一種適用於氣喘幼童的漸增負荷心肺功能測試模式。22 位經小兒科醫師臨床診斷為輕至中度氣喘幼童（男女各11 位，平均年齡為6.86歲）為受試對象，心肺功能測試是以電磁阻抗踏車測功器(SportsArt C5150)，搭配全自動能量代謝系統(COSMED K4 b2)，來量測氣喘幼童於漸增負荷運動中之心肺生理變化。測試時以負荷40瓦特(W)踏車2分鐘作為開始，之後每2分鐘增加8W運動負荷，踏車頻率設定為每分鐘40轉。結果顯示所有受試者對於此運動測試模式皆無不適感，且約有82%之受試者達到攝氧量高原穩定狀態(VO2 plateau)，也有77%受試者達到最大呼吸交換率(RERmax)≥1的標準，但只有50%的受試者到達最大運動心跳預估值。本研究驗證此漸增負荷運動測試模式可應用於評估氣喘幼童之心肺功能。

關鍵字

最大攝氧量 ； 最大呼吸交換率 ； 踏車運動測試

並列摘要

This study established the feasibility of an incremental maximum exercise protocol in asthmatic children. It investigated whether this protocol made it possible to satisfy the criteria for maximal exercise generally required in adults. Twenty-two asthmatic children (11 boys and 11 girls, mean age 6.86 years old) with clinically diagnosed mild to moderate asthma participated in this study. The incremental maximum exercise protocol was performed using a cycle ergometer with an electromagnetic braking (SportsArt C5150). Ventilation and gas exchanges were measured with a breath-by-breath automatic metabolic measurement system (COSMED K4 b2). The protocol was started at 40 watts for 2 minutes and stepwise increments of 8 watts every 2 minutes were applied. The pedaling frequency was set at 40 rpm. This protocol was found to be well tolerated by all asthmatic children. Most of the children reached the VO2 plateau (82%). A total of 77% of children satisfied the criteria for maximal respiratory exchange ratio (RERmax) of ≥1.0. Only 50% of children reached the predicted HRmax. It was concluded that this protocol was suitable for asthmatic children. Some of the criteria used for maximal exercise described in adults are rarely satisfying in children. Besides the clinical exhaustion, the best two criteria for assessing the maximality of the tests were the VO2 plateau and RERmax.

並列關鍵字

maximal oxygen uptake ； maximal respiratory exchange ratio ； cycle ergometer testing

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