Navigation Links
Women recover muscle strength more slowly than men
Date:9/25/2008

Women's muscles may require longer, more intensive rehabilitation after bed rest and cast immobilization, as reported today by the Institute for Neuromusculoskeletal Research at the Ohio University College of Osteopathic Medicine (OU-COM).

According to Brian C. Clark, Ph.D., assistant professor of neuromuscular biology, the discrepancy may relate to how sex-specific hormones regulate the growth of muscle mass. The study is the first to report sex differences in muscle strength restoration following immobilization of a limb.

"Our findings may have important implications for how women are treated for fractures, including more and/or different rehabilitation methods," Clark said.

Clark worked on the study with Ohio University researchers Richard L. Hoffman and David W. Russ, Ph.D., as well as Todd M. Manini, Ph.D., of the University of Florida. The team discussed their findings this week at the Integrative Biology of Exercise meeting, hosted by the American Physiology Society (APS) in Hilton Head, S.C. A report of their preliminary data will appear in an upcoming issue of Archives of Physical Medicine and Rehabilitation.

The researchers set casts to the non-dominant wrists and hands of 10 healthy volunteers five men and five women for three weeks. Wrist muscle strength was measured prior to placement of the casts, weekly during immobilization and one week after cast removal. Researchers also used electrical stimulation to induce muscle contractions, which showed how well the participants' nervous systems were able to activate their wrist muscles.

Results showed that men and women lost muscle strength at similar rates during immobilization. But within one week of cast removal, the men's strength returned almost to pre-cast levels, while the women's strength levels remained 30 percent lower than normal.

Immobilization did reduce the ability of the nervous system to activate wrist muscles, and the response was similar in men and women, suggesting that the slower restoration of strength among women is more likely due to different rates of muscular strength-building, as opposed to differences in the nervous system.

According to a 2003 World Health Organization report, women are four times more likely than men to experience forearm fractures requiring cast immobilization, and almost 50 percent of women will experience a bone fracture at some point in their life.

Clark cautioned against over-interpretation of the study results because of the relatively small sample size. "Our findings indicate that more work needs to be done to confirm and understand the reasons for these sex differences, the extent to which they occur, and the underlying mechanism," Clark said.

Clark and his colleagues have begun the next phase of this research, which they hope will provide more comprehensive answers.


'/>"/>

Contact: Karoline Lane
lanek@ohio.edu
740-593-2261
Ohio University
Source:Eurekalert

Related medicine news :

1. Video: One A Day(R) and Ellen DeGeneres Team Up to Deliver a Message to Women About Breast Cancer Through The One A Day Womens Wake-Up Call Program
2. Early Breast Cancer No More Likely to Return in Young Women
3. Nonprofit Charity for Women and Brookstone Dash to Fund Breast Cancer Support
4. Womens Peripheral Artery Disease Tied to Secondhand Smoke
5. Pennsylvania Commission for Women Delivers First Womens Wellness Guide Kiosk to Allegheny County Jail
6. New Book Provides Brutally Honest, Touching & Funny Essays about Women in Their 40s
7. Kabul Under Virtual Lockdown for International Travelers, Progress Still Evident for Women's Programs
8. Risk of breast cancer mutations underestimated for Asian women, Stanford study shows
9. Violence against women impairs childrens health
10. Guardian Survey: Men are Twice as Likely as Women to Use Credit Cards to Pay for Major Health Expenses
11. Fall Risk Higher in Older Women Who Sleep Less
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/26/2016)... ... June 26, 2016 , ... Pixel Film Studios Released ProSlice ... "Film editors can give their videos a whole new perspective by using the ... of Pixel Film Studios. , ProSlice Levels contains over 30 Different presets to ...
(Date:6/26/2016)... Lake Orion, Clarkston, Michigan (PRWEB) , ... June ... ... direction with respect to fertility once they have been diagnosed with endometriosis. These ... tolerable intercourse but they also require a comprehensive approach that can help for ...
(Date:6/25/2016)... ... 2016 , ... The temporary closing of Bruton Memorial Library on June 21 due to a ... new, often overlooked aspect of head lice: the parasite’s ability to live away from a ... occurrence, but a necessary one in the event that lice have simply gotten out of ...
(Date:6/25/2016)... ... 2016 , ... As a lifelong Southern Californian, Dr. Omkar Marathe earned his ... David Geffen School of Medicine at UCLA. He trained in Internal Medicine at Scripps ... in hematology/oncology at the UCLA-Olive View-Cedars Sinai program where he had the opportunity to ...
(Date:6/25/2016)... , ... June 25, 2016 , ... Conventional wisdom preaches ... success. In terms of the latter, setting the bar too high can result in ... than just slow progress toward their goal. , Research from PsychTests.com ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... Research and Markets has announced the addition of ... Forecast to 2022" report to their offering. ... date financial data derived from varied research sources to present ... impact on the market during the next five years, including ... sub markets, regional and country level analysis. The report provides ...
(Date:6/23/2016)... , , , WHEN: ... , , , , LOCATION: , , , Online, with ... , EXPERT PANELISTS:  , , , Frost & Sullivan,s Global Vice ... Senior Industry Analyst, Divyaa Ravishankar and Unmesh Lal, Program Manager , ... industry is witnessing an exceptional era. Several new demand spaces, such ...
(Date:6/23/2016)... June 23, 2016  Guerbet announced today that it ... Supplier Horizon Award . One of 12 ... recognized for its support of Premier members through exceptional ... excellence, and commitment to lower costs. ... recognition of our outstanding customer service from Premier," says ...
Breaking Medicine Technology: