@inbook{1134927883, author={Karen Holtgrefe}, editor={Kisner, Carolyn and Colby, Lynn Allen}, title={Principles of Aerobic Exercise}, booktitle={Therapeutic Exercise: Foundations and Techniques, 6e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2012}, url={fadavispt.mhmedical.com/content.aspx?aid=1134927883} }