Test of the Heart's Functional Capacity. 



47 



The most important result of this particular group of experi- 

 ments was the discovery that approximately the same amount 

 of work was followed by a delayed rise in systolic pressure whether 

 performed by the legs or arms. This is the first time as far as we 

 can ascertain that this law of circulatory physiology has been 

 demonstrated. 



Experiments on Patients with Cardiac Insufficiency Using 

 Dumb-Bell Work. 



Several hundred experiments were carried out on thirty dif- 

 ferent patients. The pulse-rate and blood-pressure could not 

 be taken during the performance of the dumb-bell work but were 

 measured every 30 or 60 seconds after work. 



The following example is selected because it represents the 

 usual type of reaction following work. 



C. G. — A man aged 31, with a history of 4 attacks of rheumatic 

 fever, and symptoms of cardiac involvement for 4 years. On 

 June 21, the following test was made. 



Time. Pulse-rate Systolic Blood-pressure. 



10:55 100 136 



10:58 88 130 



11:00 100 126 



250 foot-pounds in 20 seconds 

 (10 lb. bell flexed 10 times) 



11:02 108 138 



:03 108 136 



:04 96 132 



:05 92 126 



:o6 90 128 



11:22 96 128 



500 foot-pounds in 35 seconds 

 (10 lb. bell flexed 20 times) 



11:23}^ 106 140 



11:24 !02 130 



11:25 96 136 



11:26 92 130 



11:28 100 128 



11:341^ 96 122 



750 foot-pounds in 45 seconds 

 (10 lb. bell flexed 30 times) 



11:37 114 146 



11:38 102 136 



11:39 102 136 



11:42 96 136 



11:44 100 122 



