Cold-Induced Vasodilation Responses Before and After Exercise in Normobaric Normoxia and Hypoxia

Details

• Personal Author:
  Barkley JE ; Followay B ; Gerhart HD ; Glickman EL ; Kim J-H ; Quinn T ; Seo Y ; Vaughan J
• Description:
  Purpose: Cold-induced vasodilation (CIVD) is known to protect humans against local cold injuries and improve manual dexterity. The current study examined the effects of metabolic heat production on cold-induced vasodilation responses in normobaric hypoxia and normoxia. Methods: Ten participants immersed their non-dominant hand into 5 degrees C water for 15 min. Minimum finger temperature (Tmin), maximum finger temperature (Tmax), onset time, amplitude, and peak time were measured before and after exercise under normoxia (21% O2) and two levels of normobaric hypoxia (17% O2 and 13% O2). Results: Neither Tmin nor amplitude was affected by hypoxia. However, Tmax was significantly decreased by hypoxia while reduction in onset time and peak time trended towards significance. Tmin, Tmax, and amplitude were significantly higher during post-exercise CIVD than pre-exercise CIVD. Conclusion: The CIVD response may be negatively affected by the introduction of hypoxia whereas metabolic heat production via exercise may counteract adverse effects of hypoxia and improve CIVD responses. [Description provided by NIOSH]
• Subjects:
  Blood Cold Temperature Energy Metabolism Lung Lung Diseases Occupational Health Pathology Respiratory System Respiratory Tract Diseases Safety
• Keywords:
  Amplitude Author Keywords: Body Temperature Blood Pressure Blood Vessels Body Regions Body Temperature Cold-induced Vasodilation Cold Adaptation Cold Environments Exercise Heat Production Humans Hypoxia Metabolic Effects Metabolic Rate Normobaric Hypoxia Oxygen Deprivation Oxygen Levels Physical Exercise Physiological Effects Physiological Response

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• ISSN:
  1439-6319
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Minnesota ; Ohio ; OSHA Region 3 ; OSHA Region 5 ; Pennsylvania ; Wisconsin
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  NPPTL - National Personal Protective Technology Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  119
• Issue:
  7
• NIOSHTIC Number:
  nn:20055822
• Citation:
  Eur J Appl Physiol 2019 Jul; 119(7):1547-1556
• Contact Point Address:
  Yongsuk Seo, Environmental Physiology Laboratory, Kent State University, Kent, OH, USA
• Email:
  yseo@kent.edu
• CAS Registry Number:
  Oxygen (CAS RN 7782-44-7)
• Federal Fiscal Year:
  2019
• Peer Reviewed:
  True
• Source Full Name:
  European Journal of Applied Physiology
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:79555ab8f29c4c5f6234b56726ab64538adb9484d70db73bacda7dc1562098c0879ddc7f0e81de556429136498b388105c2f611f1a75f7fd78dc12e54e3c0c1a
• Download URL:
  https://stacks.cdc.gov/view/cdc/213590/cdc_213590_DS1.pdf
• File Type:
  [PDF - 956.78 KB ]