A Tissot spirometer (probably 125 liter) used for exercise testing. The subject is inhaling through a gas meter and exhaling into the Tissot spirometer while riding a Monark exercise bicycle. From a University of Texas of the Permian Basin college course synopsis on exercise physiology.
From a 1986 doctoral thesis on the Maximal Acceptable Weight of Lift by J.E. Fernandes
Exercise testing. From The Department of Scientific and Industrial Research, Advisory Council, Second Report of the Mine Rescue Apparatus Committee, Published by His Majesty’s Stationary Office, 1920, page 58.
Found on the Steno Museum Collection website. Described as “a black stationary bike without wheels but instead mounted on four obliquely positioned legs, standing in a black iron frame on the floor.” It appears to be electromagnetically braked and is attributed to a design of August Krogh. Manufactured by the Copenhagen Electric Motor Factory between 1910 and 1920.
Bicycle ergometry. From: Studien uber die Pathophysiologie der Atmung bei der Silikose Die Lungenfunktion im Arbeitsversuch by P.H. Rossier and A. Buhlmann, 1950, page 58.
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.
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.
From: Survey of Current Cardiovascular and Respiratory Examination Methods in Medical Selection and Control of Aircrew by A. Scano, NATO Agardograph No. 196, published December 1974, page 76.