Navigation Links
The Pill May Limit Muscle Gains in Women
Date:4/17/2009

But experts say results from the small study are no reason to stop birth control

FRIDAY, April 17 (HealthDay News) -- Lower hormone levels in women who exercise regularly and take birth-control pills may result in less muscle mass increases, a new study suggests.

But the muscle-mass differences between women taking "the pill" and those not taking the pill did not affect performance.

At this point, the finding, from a study scheduled for presentation Friday at the annual meeting of the American Physiological Society in New Orleans, is no reason to stop taking oral contraceptives, experts said.

"It is premature to say anything conclusively at this point," said study lead author Chang Woock Lee, a doctoral candidate in the department of health and kinesiology at Texas A&M University, College Station. "Vigorous future studies with more stringent control and clever design will be definitely needed to confirm the results and/or elucidate the underlying mechanism conclusively."

Others agreed.

"It's just one small, a very small, group of women. If you think of how many women actually are on the pill, how significant is the difference in terms of patients noticing anything or even an actual health effect?" said Dr. Jennifer Wu, an obstetrician/gynecologist at Lenox Hill Hospital in New York City. "This might make a difference for a high-performance athlete in a competition, but, for your normal patients who have a healthy exercise routine, this might not make a difference."

"I don't disagree with the statistical significance, but the clinical significance is very questionable," added Dr. Amanda Weiss-Kelly, director of pediatric sports medicine at Rainbow Babies & Children's Hospital, part of University Hospitals Case Medical Center in Cincinnati. "The difference didn't translate into improvement in performance," she added.

There is some existing research into the effect of oral contraceptives on body composition, Weiss-Kelly said, but most studies have been small, and results have been conflicting.

The authors of the new research studied two groups of 18- to 31-year-old women: 34 who were on the pill and 39 not on the pill. All were active and healthy and took part in a 10-week resistance-exercising training program (three times a week) as well as analysis of their body composition both before and after the program.

Women not taking oral contraceptives gained more than 60 percent more muscle mass than those on the pill.

There were other changes noted in participants on the pill, including reduced concentrations of the hormone DHEA, which Lee explained, is an anabolic hormone and therefore builds muscle.

But some of these changes would be expected in women taking contraceptives, Weiss-Kelly said.

More information

The U.S. National Women's Health Resource Center has more on birth-control pills.



SOURCES: Chang Woock Lee, doctoral student, Department of Health and Kinesiology, Texas A&M University, College Station; Jennifer Wu, M.D., obstetrician/gynecologist, Lenox Hill Hospital, New York City; Amanda Weiss-Kelly, M.D., director, pediatric sports medicine, Rainbow Babies and Children's Hospital, University Hospitals Case Medical Center, Cincinnati; April 17, 2009, presentation, annual meeting of the American Physiological Society, New Orleans


'/>"/>
Copyright©2009 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Helen of Troy Limited Announces Closing of Global Infusium Brand Acquisition From Procter & Gamble
2. Drug-Coated Sponges May Limit Catheter Infections
3. Non-safety-related voluntary market withdrawal of a limited portion of DAYTRANA(R) (methylphenidate transdermal system) patches announced
4. When Time is Limited, Internet is the Number One Support Tool for Caregivers
5. Irelands Allergy Standards Limited Adds Two New U.S. Names to Line-Up of Companies Making Allergy-Certified Consumer Products
6. Limited resources, unlimited needs: Americans should ration health care, says MSU ethicist
7. Supreme Court Rejects Limits on Drug-Injury Lawsuits
8. Association for Healthcare Philanthropy Opposes Limits on Charitable Tax Deductions
9. Study sheds light on angiogenesis inhibitors, points to limitations, solutions
10. Press Statement Issued by Ranbaxy Laboratories Limited
11. Experts Urge Limits on Use of Cardiac CT Scans
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/17/2017)... ... February 17, 2017 , ... Pharmica Consulting ... on all facets of clinical trial planning and management. Pharmica discussed the importance ... more. In addition, attendees stopping by Pharmica’s booth were able to demo its ...
(Date:2/17/2017)... ... February 17, 2017 , ... Cancer diagnostics workflow ... Tri-Conference February 20 – 22 in San Francisco. As part of the Tri-Conference ... molecular pathology workflow solution, as well as its new precision medicine platform, “Crosswalk ...
(Date:2/17/2017)... ... ... Top neuroendocrine cancer doctors, nurses and specialists from around the world will ... in Beaver Creek, CO. It was announced today by Cindy Lovelace, executive director of ... hosting over 60 faculty members and addressing unmet needs of the NET community. ...
(Date:2/17/2017)... , ... February 17, 2017 , ... ... financial planning assistance to families and business owners in the greater Fort Lauderdale ... Families organization. , For more than 30 years, LifeNet 4 Families has ...
(Date:2/16/2017)... ... February 17, 2017 , ... For some cancer survivors, ... final treatments. Physician researchers at The Marcus Institute of Integrative Health at ... efficacy in reducing symptoms of traumatic stress in cancer patients and published ...
Breaking Medicine News(10 mins):
(Date:2/17/2017)... -- Perrigo Company plc (NYSE, TASE: PRGO) today announced it has ... for hydrocodone bitartrate and homatropine methylbromide oral solution (syrup), 5 ... and homatropine methylbromide oral solution (syrup), 5 mg/1.5 mg per ... in adults and children 6 years of age and older. ... approximately $16 million.   ...
(Date:2/17/2017)... , Feb 17, 2017 Research and Markets ... Business Report" report to their offering. ... The report provides separate comprehensive analytics for the US, ... , Asia-Pacific , Latin America ... the period 2015 through 2022. Also, a six-year historic analysis is provided ...
(Date:2/17/2017)... partnership with CitiHope , Panexus Haiti ... Jack Brewer Foundation (JBF Worldwide) has sent a ... medicine to Innovating Health International (IHI) in ... to treating chronic diseases and addressing women,s health issues in developing ... and providing these medicines to the organization ...
Breaking Medicine Technology: