The relationship between muscle function and lactic acid concentration started in 1910 when J.H. Ryffel from London's Guy's Hospital that walking 12 laps in 2min45 increases the lactic acid level from 12.5mg / 100ml of blood to 71mg / 100ml bleeding that the urine levels increased from 4 mg / h to 362mg / h after 17 minutes of recuperation.
Siegfried Weissbein, Professor of Physiology in Berlin, published "Hygiene des Sports" the first textbook on Sports Medicine, which was actually a collection of the 32 lectures that were held at the conference with the same title. The book dealt with the effects of sport on the various organs and the first aid needed for injuries sustained.
In the contribution Methodology of energy metabolism ('Methodik des Energiestoffwechsels') by Swedish Professor of Physiology Johan Erik Johansson (1862-1938) in the Handbook of biochemical labor methods ('Handbuch der biochemischen arbeitsmethoden') by Swiss biochemist and physiologist Emil Abderhalden (1877-1950) on page 1157, exercise tests were carried out in the field. listed for the study of human ventilation.
The device was equipped with a tube to be able to extract air samples during breathing.
Several prominent physiologists were interested in the reactions of the human body to exertion where endurance, strength, height, heat and cold played a role. Consequently, soldiers, athletes, pilots and mountaineers were studied. In the United States, such research was conducted for the first time at the Carnegie Nutrition Laboratory in the Boston area.
Through the Washington Carnegie Institute, American physiologists Francis G. Benedict (1870-1957) and Thorne M. Carpenter (1878-1971) published 'Respiration Calorimeters for Studying the Respiratory Exchange and Energy Transformations of Man', a wonderful description of their lab.
Ground plan of the lab
General view of the lab. At the right hand the absorption table and behind the bed calorimeter. At the front the scale to weigh the absorptions. A sulfuric acid absorber is suspended from the left of the balance. On the left hand is the observer's table, followed by the chair calorimeter with a large scale above it for weighing the test subjects. To the left of the floor is the water meter for weighing the water used to drain the heat.
A device for measuring the gas exchange developed by Nathan Zuntz (1847-1920) and August Julius Geppert (1856-1937), which incuded mouth piece, one-way valves, a dry gas meter and a chemical gas analyzer.
For the third 'Congrès International de Physiothérapie' in Paris, no less than a thousand interested people from the medical world showed up from 26 different countries.
In 1910, German physician Erich Grafe (1881-1958), who was assistant to Professor of Physiology Albrecht Ludolf von Krehl (1861-1937) (photo) in Heidelberg, published 'Das Respirationsapparat', a description of his respiratory chamber, which was intended only for bedridden patients. In order to roll a bed under it, the lid could easily be lifted. In 1909 he had already described a respiration device where the device covered the head and shoulders of the patient. Both devices were ventilated according to the open circuit principle and a sample of exhaled air was analyzed for carbon dioxide and oxygen. In the small open-circuit room the sides fit in a waterproofing in the floor, there was no door provided because the entire room could be lifted for the patient to enter. The ventilation flow was ensured by a mechanically rotating wet-gas meter.
The Narragansett Machine Company from Providence, Rhode Island started the production of solid and reliable indoor rowing machines, which quickly found their way to the university campuses, where the rowers used them for their off-season training.
Physiotherapy with fango was used at the 'Etablissement Thermal des Baignots' at the foot of the French Pyrenees.
The British Medical Association's Council recommended that schoolboys participating in swimming, rowing, boxing and cross-country running should undergo medical examinations.
Canadian American Daniel David Palmer (1845-1913) practiced without relevant training as a 'magnetic healer and a self-taught manipulative chiropractic therapist'. The well-known American journalist Henry Louis Mencken (1880-1956) described him in 1924 as a quack who elaborated on the work of the American physician osteopath Andrew Still (1828-1917).
His son Bartlett Joshua Palmer (1881-1961) gave the profession of chiropractics its modern form, although it was his father who received the honor for its origins.