The effect of previous volume history and exercise on closing volume

Details

• Personal Author:
  Strom BL
• Description:
  This study investigated the effects of previous volume history, Vigorous voluntary hyperventilation, and exercise on the closing volume measurements in normal subjects. It was shown that preliminary maneuvers such as none, one, or three maximal inspirations had no significant effect on the measurements of closing volumes or nitrogen concentrations. Vigorous voluntary hyperventilation prior to measurement significantly increased the pulse rates and alveolar volume but not closing volumes or nitrogen concentrations. Maximal exercise preceding measurement significantly increased the pulse rates and nitrogen concentrations whereas it caused significant decreases in vital capacity and closing volume in the first minute post exercise. The pulse rates remained significantly elevated from the control state for as long as 13 minutes post exercise, but the vital capacities and closing volumes returned to the control values by seven minutes post exercise. The changes in vital capacity, closing volume, and nitrogen concentrations are most likely explained by a combination of the difficulty in performing a slow, controlled expiration and the increased oxygen consumption immediately following cessation of exercise. [Description provided by NIOSH]
• Subjects:
  Demography Lung Men Occupational Health Respiratory Function Tests Respiratory System Respiratory Tract Diseases Safety
• Keywords:
  Demographic-characteristics Humans Lung-function Pulmonary-function Pulmonary-function-tests Pulmonary-system-disorders Respiratory-function-tests Respiratory-system-disorders
• ISSN:
  0002-7960
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  ALFORD - Appalachian Laboratory for Occupational Respiratory Disease
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  30-34
• Volume:
  13
• NIOSHTIC Number:
  nn:20047512
• Citation:
  Bull Am Coll Chest Phys 1974 Jan; 13:30-34
• Federal Fiscal Year:
  1974
• Peer Reviewed:
  False
• Source Full Name:
  Bulletin of the American College of Chest Physicians
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:55490a0f94ee6b4e1513f0558fbeb84d18d0487d23eb85ac3c7a363e9aa2a035391c6d120eb16da21eeb07417bf0231d74fb664f53e14993c1a2c92e47c7c776
• Download URL:
  https://stacks.cdc.gov/view/cdc/202557/cdc_202557_DS1.pdf
• File Type:
  [PDF - 3.28 MB ]