EXPERIMENTAL KETOSIS IN MAN. 'COLD KETOSIS' COMPARED WITH POST-EXERCISE KETOSIS AND NUTRITIONAL KETOSIS.
Abstract
This investigation was designed to answer three questions: (1) Does repetition of a ketosis following a 10 mile walk cause adaptive responses; (2) Does repeated exposure to cold result in a diminished ketotic response; (3) Do women show a post-exercise ketosis like men. Protocols for the three experiments were: (1) Four subjects starved 2 days prior to and during a walk of 2.5 hours at 10 C and a rest thereafter of 11.5 hours at 25 C. During nine weeks, walks were conducted in weeks 1, 2, 3, 8, and 9, and not in the remaining four. (2) Four men were exposed nude to 0 C for 90 minutes once a week for 3 successive weeks. Comparable control studies were made at 25 C in a ''crossover'' pattern. (3) Three women walked outdoors for 2.5 hours at between 19 C and 27 C on three occasions, and then recovered for 5 hours. Men and women both displayed a decreasing ketotic response as a result of repetitive exposure to exercise; and one out of four men showed a similar phenomenon with respect to adaptation to cold. Women displayed a post-exercise ketosis similar to that shown by men, despite much individual variability. Prolonged moderate exercise, exposure to cold and starvation all produce similar metabolic effects. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 15, 1963
- Accession Number
- AD0422388
Entities
People
- Robert E. Johnson
Organizations
- University of Illinois Urbana–Champaign