Exercise Affects Men"s Women"s Hearts Differently.

The formula doctors use to evaluate treadmill stress tests,and thereby assess heart health does not account for important difference between men and women ,a new study contends.

A revised formula would better determine peak exercise rate,or the maximum heart beats per minute,for each sex,the researcher said.

Exercise physiology has been known to differ for men and women of different ages,said Dr. Gregg Fonarow,associate chief of cardiology at the University of California ,Los Angles,and spokesman for the Heart Association.

The proposal for sex specific maximai heart rate warrants further research,he said,This may represent a valuable improvement for guiding exercise stress testing added Fonarow who was not involved in the study.

Doctors now use the formula 220 minus age to determine how hard patients should work out during exercise stress tests.,Many peoples also use this formula to set their target heart rate during work outs.

Allison"s group found that although peak heart rate declines with age for both sexes,the rate declines more gradually in women.The difference results in an overestimated peak heart rate in younger women and under estimated peak heart rate in older women,the researchers said. For this study , a team led by Dr. Thomas Allison director of stress testing at Mayo clinic in Rochester Minn..reviewed 25000 stress tests results. They saw significant difference between men and women.

Based on their findings ,the study authors developed a new formula- The maximum heart rate for women aged 40-89 should be 200 minus 67 percent of their age.For men,the freferd formula is 216 minus 93 percent of their age,the study authors said.

Because of limited tests results for women under age 40,the researchers were unable to recommend a new formula for this group.

Alloso:s team also found that younger men have a lower resting heart rate and higher peak heart rate than women.In addition men:s heart rates rise more dramatically during exercise and return to normal more quickly after stopping.the Researchers said.

Heart experts welcomed the preliminary results. &so on, see http//nim.nih.gov/medilineplus/ne... This news item will not available after 06/25/2014)

[gangadharan_nair]

Bruce protocol differentiates young men, men and women.

Sources:--

en.wikipedia.org/wiki/Exerc...

nlm.nih.gov/medlineplus/enc...

en.wikipedia.org/wiki/Bruce...

[gangadharan_nair]

Bruce protocol differentiates young men, men and women.

Sources:--

en.wikipedia.org/wiki/Exerc...

nlm.nih.gov/medlineplus/enc...

en.wikipedia.org/wiki/Bruce...

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"This is timely and we needed it for a while" said Dr.SuZanne Steinbaum,director pf women and heart disease of Lenox Hill Hospital,in New York city."All of these differences are very important,not only for diagnosis,but also for teaching people how best to exercise to get the most cardiovascular fitness," She said.

While the study did not look at the reasons for the gender differences,the researchers speculate that hormone,particularly male hormone testosterone are involved.

Also when current formula was was developed,medical studies recruited few women,Allison said.

"It is logical that an equation developed 40 years ago based on a group that was predominantly men might not be ac curates when applied to women today.

Dr.Kevin MarZo chief of cardiology at Winthrop-University Hospital in Mineola,N.Y.said the original formula stems from research in the early 1970"s.

Once again we learn t that men and women are very different and our medical research and treatments need to be gender specific. he said.

Research presented at meetings is typically considered preliminary until published in a peer medical journal.Sources- Gregg Fonarow M.D. professor,medicine,and associate chief of cardiology.University of California,Los Angles. Health day-2014 Health day(http//health day.com/.All rights reserved.