Example of a series of exercises from Weiss and Karpovich Example of a series of exercises from Weiss and Karpovich. Note the metronome cadence in CPM (counts per minute) and the energy requirements (in METS). (Reproduced with permission from Weiss RA, Karpovich PV. Energy cost of exercises for convalescents. Arch Phys Med. 1947;28:447.) Source: Chapter 1. History of Cardiopulmonary Rehabilitation, Cardiovascular and Pulmonary Physical Therapy: An Evidence-Based Approach, 2e Citation: DeTurk WE, Cahalin LP. Cardiovascular and Pulmonary Physical Therapy: An Evidence-Based Approach, 2e; 2011 Available at: http://accessphysiotherapy.mhmedical.com/DownloadImage.aspx?image=/data/books/detu2/detu2_c001f002.gif&sec=39695904&BookID=456&ChapterSecID=39695842&imagename= Accessed: January 01, 2018 Copyright © 2018 McGraw-Hill Education. All rights reserved