1-8 MPH treadmill for Stationary Exercise. From “Directions for operating a Collins chain-compensated gasometer”, Second Edition Cat. No. P-469. Warren E. Collins, Inc. May, 1967.
“This sturdy, yet easily portable, 1-8 MPH treadmill moves on 5” dia. ball-bearing casters. The optional “Electrolift” enables effortless inclination to 16 degrees (30%) with only the touch of a switch.”
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.
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.
Found on Flickr. Image from page 180 of “Transactions – American Society of Heating, Refrigerating and Air-Conditioning Engineers” (1895)
“Fig. 18 View in Observation Room looking toward south wall. In the upper center ofthe picture is the Body Temperature Recorder. In the lower right corner Is the Bicycle Ergometer, the controlling rheostat being located on the table. At the left is seen a spirometer used to collect and measure exhaled air.”
From A Respiration Calorimeter with Appliances for the Direct Determination Oxygen, By Wilbur Olin Atwater, Francis Gano Benedict. Published by Carnegie Institution of Washington, 1905, page 165.
Exercise testing , 1954. Pictured standing is Sepp Herberger, German football coach. Equipment manufacturer was not named but is likely Dargatz. From: page 40 of of a 2003 doctoral dissertion by Yaser Mahfouz Atwa Saad Elgohari.
Using the Douglas bag in the measurement of oxygen uptake. Ergometer was a mechanically braked Åstrand-Ergometer. Photo taken at the Stockholm Sports Medicine Laboratory of the Swedish College of Physical Education. Professor Per-Olaf Åstrand, MD on the right. From: page 20 of of a 2003 doctoral dissertion by Yaser Mahfouz Atwa Saad Elgohari.
Bicycle ergometry. From Muscular Work: A Metabolic Study with Special Reference to the Efficiency of the Human Body as a Machine, Issue 187, By Francis Gano Benedict and Edward Provan Cathcart, published by Carnegie institution of Washington, 1913. Un-numbered front page.
