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Exercise eases hot flushes during menopause

December 17, 2015

Exercise can reduce the amount and intensity of hot flushes experienced during the menopause, according to a study published today in The Journal of Physiology.

Exercise that makes you hot, sweaty and fitter reduced the severity of hot flushes by minimising the symptoms that occur during a hot flush, such as the amount of sweating and elevations in skin, as well as blood flow in the brain. In contrast, the women who remained sedentary reported very little differences in hot flush severity.

Hot flushes are the most common symptom experienced during a woman's menopause. The physiology of hot flushes remains partly unknown, although they have been linked to raised blood lipids and potentially insulin resistance, which could be risk factors for cardiovascular diseases.

To measure the characteristics of hot flushes and impact of exercise, researchers recruited 21 healthy symptomatic post-menopausal women, of which 14 undertook a gym-based exercise programme for four months while another group formed a control group and carried on with their life as normal.

Participants completed a self-assessment questionnaire about the frequency and intensity of their hot flushes. To get a physiological hot flush assessment, the researchers placed the women in a hot water suit to induce a hot flush and then recorded their physiological reactions, including sweating and skin and brain blood flow, which match the descriptions of sweating, flushing and faintness on the usual self-report hot flush questionnaire. The women in the exercise group exercised in the gym on a treadmill, bike, rower and cross trainer so they increased their breathing and blood flow and sweated but were still able to talk. They progressed from three 30-minute sessions a week to five 45-minute sessions a week. After 4 months, they measured the number and severity of hot flushes again using the same measurements.

In addition, researchers found that hot flushes significantly increased heart rate, skin blood flow and sweating, but reduced mean arterial pressure and blood flow in the brain.

Dr Jones from the Research Institute for Sport and Exercise Sciences at Liverpool John Moores University and lead investigator of the study commented, '

'Previous studies have only investigated if post-menopausal women could improve the number and severity of hot flushes using a questionnaire which described symptoms. We have provided direct evidence that the physiological reactions during a hot flush can be improved with regular exercise that makes you fitter. This information can now be used to promote exercise as a treatment in the management of menopausal hot flushes.

'In future research, we would like to find out if exercise training also works for breast cancer related hot flushes, when hot flushes may even be more severe.'
-end-
Notes for Editors:

1. Full paper title: Bailey T et al (2015) Exercise training reduces the acute physiological severity of post-menopausal hot flushes. doi: 10.1113/JP271456 http://onlinelibrary.wiley.com/doi/10.1113/JP271456/full

2. The Journal of Physiology publishes advances in physiology, which increase our understanding of how our bodies function in health and disease. http://jp.physoc.org

3. The Physiological Society brings together over 3,500 scientists from over 60 countries. The Society promotes physiology with the public and parliament alike. It supports physiologists by organising world-class conferences and offering grants for research and also publishes the latest developments in the field in its three leading scientific journals, The Journal of Physiology, Experimental Physiology and Physiological Reports. http://www.physoc.org

Contacts:

Dr Helga Groll
Media and Communications Officer
pressoffice@physoc.org
44-0-20-7269-5727
The Physiological Society

Corresponding author

Dr Helen Jones
Email: h.jones1@ljmu.ac.uk
Research Institute for Sport and Exercise Sciences
Liverpool John Moores University
Tom Reilly Building
Byrom Street, L3 3AF

The Physiological Society

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