Despite a large scattering of HR decay rate, even present in healthy subjects, a 2 and ΔHR were significantly lower in obeses and COPDs.
2009, Abdoulaye Ba, Stephane Delliaux, Fabienne Bregeon, Samuel Levy, Yves Jammes, “Post-exercise heart rate recovery in healthy, obeses, and COPD subjects: relationships with blood lactic acid and PaO2 levels”, in Clinical Research in Cardiology, volume 98, number 1, Springer, pages 52–58