The Effects of High Intensity Cycle Exercise on Sympatho-Adrenal- Medullary Response Patterns

Abstract

Plasma proenkephalin Peptide F immunoreactivity (ir) and catecholamines were examined before and after maximal exercise to exhaustion at four intensities 36, 55, 73 and 100% maximal leg power (MLP) by means of a high resistance cycle ergometer. All intensities were greater than those eliciting peak O2 uptake for the individual subjects. Blood samples were obtained immediately after exercise and at 5 and 15 main post-exercise. Data suggest that exercise-induced increases may be the result of non-colinear storage and release mechanisms in the adrenal medulla. Keywords: Proenkephalins; Opioid peptides; Epinephrine; Norepinephrine; Anaerobic exercise; Skeletal muscle morphology. (EMK)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1989
Accession Number
ADA217962

Entities

People

  • Charles J. Hannan
  • Howard G. Knuttgen
  • John F. Patton
  • Thomas Kettler
  • William J. Kraemer

Organizations

  • United States Army Research Institute of Environmental Medicine

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Alcohols
  • Aluminum Oxides
  • Blood
  • Catecholamines
  • Cells
  • Cells (Biology)
  • Endocrine Glands
  • Epinephrine
  • Liquid Chromatography
  • Mainframe Computers
  • Materials
  • Medical Personnel
  • Muscle Fibers
  • Peptides
  • Release Mechanisms
  • Skeletal Muscle
  • Test Methods

Fields of Study

  • Education

Readers

  • Cardiovascular Physiology
  • Exercise and Sports Science.