1. How does heart rate recovery after sub-maximal exercise correlate with maximal exercise testing in children with CF? 
Sarah P. Cohen, David M. Orenstein 
Journal of Cystic Fibrosis 
Volume 13, Issue 6, Pages (December 2014)
DOI: /j.jcf
Copyright © 2014 European Cystic Fibrosis Society. Terms and Conditions

2. Fig. 1
Comparison of maximum HR on the three-minute step test vs. maximal test.
Journal of Cystic Fibrosis  , DOI: ( /j.jcf )
Copyright © 2014 European Cystic Fibrosis Society. Terms and Conditions

3. Fig. 2 VO2 max (%predicted) vs. three-minute step test max HR.
Journal of Cystic Fibrosis  , DOI: ( /j.jcf )
Copyright © 2014 European Cystic Fibrosis Society. Terms and Conditions

4. Fig. 3
VO2 max (%predicted) vs. time to return to resting HR after the three-minute step test, stratified by FEV1.
Journal of Cystic Fibrosis  , DOI: ( /j.jcf )
Copyright © 2014 European Cystic Fibrosis Society. Terms and Conditions