Attributed to an unnamed 1970 article by Astrand and Rodahl.
Category Archives: Douglas Bag
Douglas Bags, 1924
From “Muscular Exercise, Lactic Acid, and the supply and utilization of oxygen, part IV – VI”, by A.V. Hill, C.N.H. Long, H. Lupton. Proceedings of the Royal Society of London, Volume 97, number 681, page 87.
Douglas Bag, 1924
From “Muscular Exercise, Lactic Acid, and the supply and utilization of oxygen, part IV – VI”, by A.V. Hill, C.N.H. Long, H. Lupton. Proceedings of the Royal Society of London, Volume 97, number 681, page 85.
Douglas Bag, 1945
From Bioenergetics and Grown by Samuel Brody, Published by Reinhold Publishing, NY, 1945. Chapter 12, page 337. Found on the website BeefEfficiency.org.
Douglas Bag, used while loading torpedoes, circa 1940’s
Undated photo of a Douglas bag being used to capture exhaled air while the subject loads torpedoes, probably from the 1940’s. Found on a ScienceDawn.com article.
Douglas Bag, used while cutting a log, circa 1950’s
Undated photo found on the FAO Corporate Repository. Probably from the 1950’s.
Douglas Bag, 1928, field measurements from a runner
A rather ingenious technique. Douglas bags being used to collect exhaled air from a runner. Found posted on www.fact.canada.com. Original source is unknown.
Douglas Bags, 1934
Found at Europeana.Eu. From an educational film entitled “Methods of measuring metabolism and basal metabolism Krogh and Douglas bag”, Produced by the Department of Physiology, Cambridge University, 1934.
A comparison of filled Douglas bags, one from a resting test and one from an exercise test.
Douglas Bag, 1934, Filled
Found at Europeana.Eu. From an educational film entitled “Methods of measuring metabolism and basal metabolism Krogh and Douglas bag”, Produced by the Department of Physiology, Cambridge University, 1934.
Douglas bag shown filled following an exercise test.
Douglas Bag, 1934, Exercise gas collection
Found at Europeana.Eu. From an educational film entitled “Methods of measuring metabolism and basal metabolism Krogh and Douglas bag”, Produced by the Department of Physiology, Cambridge University, 1934.
Demonstrating how to use a Douglas bag to collect exhaled air during exercise.