Obsrtuctive sleep apnoea (image) University of Eastern Finland Share Print E-Mail Caption Data available from clinical sleep studies could be utilised more extensively by, for example, paying closer attention to heart rate and heart rate variability. Credit UEF / Raija Törrönen Usage Restrictions Please mention the credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.