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学科主题: 公共卫生
题名:
Effect of Respirator Resistance on Tolerant Capacity during Graded Load Exercise
作者: Qiu, Man; Wang, Sheng
关键词: self-contained breathing apparatus ; breathing resistance ; respirator ; tolerant time
刊名: JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY-MEDICAL SCIENCES
发表日期: 2012-06-01
DOI: 10.1007/s11596-012-0075-x
卷: 32, 期:3, 页:434-437
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Biochemistry & Molecular Biology
研究领域[WOS]: Biochemistry & Molecular Biology
关键词[WOS]: INDUSTRIAL RESPIRATORS ; WORK PERFORMANCE ; EXHALATION RESISTANCES ; INSPIRATORY RESISTANCE ; PROTECTIVE DEVICES ; HEART-RATE ; MASK ; LEVEL ; COST ; WEAR
英文摘要:

Respirator breathing resistance impacts performance of wearers during constant work load. However, it is less clear as to how breathing resistance affects the tolerant capacity of users during graded work load. The present study investigated the tolerant capacity of 8 individuals during incremental work load. The 8 subjects were required to wear two matched respirators (respirators I and II which were designed to have different breathing resistances and the same dead space) respectively on separate days and then work to end points. Minute ventilation (V-E), breathing frequency (BF), oxygen consumption (VO2) and heart rate (HR) were recorded during exercise, while tolerant time, response time and breathing discomfort were measured at the end of each test trial. The test variables were compared between the two respirators by using matched-pairs t-test. The results showed that the tolerant time was significantly reduced for the respirator I with higher level of breathing resistance when compared with its counterpart with lower breathing resistance (respirator II) (P<0.05). The same changes occurred for response time. Results also showed a significant increase in V-E and BF for respirator I wearers when the work load was above 125 W. The O-2 consumption was similar under the two breathing resistance conditions. These findings suggested that the respiratory resistance caused by self-contained breathing apparatus (SCBA) has an impact on the tolerant capacity of users.

语种: 英语
WOS记录号: WOS:000305226400023
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/61113
Appears in Collections:北京大学公共卫生学院_期刊论文

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作者单位: Peking Univ, Sch Publ Hlth, Beijing 100191, Peoples R China

Recommended Citation:
Qiu, Man,Wang, Sheng. Effect of Respirator Resistance on Tolerant Capacity during Graded Load Exercise[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY-MEDICAL SCIENCES,2012,32(3):434-437.
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