01:20pm Friday 10 July 2020

Study to find what gets the heart going

Hayleigh Raiff, a student from the University of Dayton in Ohio in the United States, is researching the acute effects of exercise on cardiovascular function.

Ms Raiff is working with staff from JCU’s Institute of Sport and Exercise Science (ISES) and Vascular Biology Unit, and members of the National Health and Medical Research Council-funded National Centre for Research Excellence to improve the management of Peripheral Artery Disease (PAD).

The study, The acute effects of aerobic and resistance exercise on cardiovascular function and arterial stiffness, is a pilot study that aims to guide future research into improving the exercise prescription of patients with a type of PAD – abdominal aortic aneurysm.

“The goal of the research is to study the effect of a single exercise bout on vascular function,” Ms Raiff said.

“While the cumulative effects of aerobic and resistance training have been shown in previous studies, this study hopes to examine the changes observed after a single session and identification of the mechanism for these changes over time.”

Ms Raiff said the research was being conducted in the ISES Exercise Testing and Prescription Laboratory at JCU under the supervision of Associate Professor Anthony Leicht from ISES.

“The research involves having participants complete three sessions with each consisting of 20-minutes of rest, 30-minutes of exercise and 60-minutes of recovery,” she said.

“The three exercise sessions involve aerobic, resistance and no exercise with the three sessions undertaken in a randomised order with at least 48 hours separating each session.

“Before each exercise, measures of vascular function including arterial stiffness, central aortic pressure and peripheral blood pressure are taken with blood samples also collected for analysis of biomarkers of vascular function.”

During each of the exercise sessions, heart rate, blood pressure and rating of effort are recorded every 1-5 minutes.

Following exercise, another blood sample is taken in order to examine the biomarker change during the exercise and measure of arterial stiffness, central aortic pressure and peripheral blood pressure are recorded at regular intervals.

Ms Raiff said her journey to JCU had been unconventional.

“While most students work with a study abroad department, I was fortunate enough to be put directly in contact with Associate Professor Anthony Leicht of JCU’s Institute of Sport and Exercise Science,” she said.

“During the summer of 2012, I contacted my advisor at the University of Dayton to express my interest in spending the next summer in Australia because of my interest in physiotherapy.

“I was also hoping to get some clinical experience and hoped he would be able to give me some guidance and inform me of some opportunities.”

In a coincidence, her supervisor informed her Associate Professor Leicht had just stopped by his office at UD the previous week and encouraged her to contact him about the experience she was looking for.

The plans fell into place and Ms Raiff began studying for her Honours Thesis.

Ms Raiff said she would use the findings of the study to compose her Honours Thesis as a part of her Honours with Distinction curriculum at UD.

“I am excited to take all that I have learned here at JCU back with me to UD and hopefully contribute to my department’s understanding of vascular physiology.”

Note for media: for interviews, contact Ms Raiff on 0405 719 347 or email [email protected]


JCU Media contact: Caroline Kaurila (07) 4781 4586 or 0437 028 175

Share on:

MORE FROM Heart disease

Health news