Comment on Is reduction in peak heart rate while exercising a sign of hypoglycaemia in athletes with diabetes mellitus? Response to Sacre et al. Diagnostic accuracy of heart-rate recovery after exercise in the assessment of diabetic cardiac autonomic neuropathy. [Diabet Med. 2013] Diagnostic accuracy of heart-rate recovery after exercise in the assessment of diabetic cardiac autonomic neuropathy. [Diabet Med. 2012]