Navigation Links
Women recover muscle strength more slowly than men

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
Ohio University

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:
(Date:6/26/2016)... ... June 26, 2016 , ... Pixel Film Studios Released ProSlice Levels, ... editors can give their videos a whole new perspective by using the title ... Pixel Film Studios. , ProSlice Levels contains over 30 Different presets to choose ...
(Date:6/26/2016)... Charlotte, NC (PRWEB) , ... June 26, 2016 , ... Brent Kasmer, a legally blind ... able to be personalized through a fitness app. The fitness app plans to fix the ... solutions currently only offer a one size fits all type program , They ...
(Date:6/25/2016)... D.C. (PRWEB) , ... June 25, 2016 , ... ... discuss health policy issues and applications at AcademyHealth’s Annual Research Meeting June 26-28, ... their work on several important health care topics including advance care planning, healthcare ...
(Date:6/25/2016)... ... June 25, 2016 , ... The temporary closing of Bruton Memorial Library on June 21 due ... up a new, often overlooked aspect of head lice: the parasite’s ability to live away ... a common occurrence, but a necessary one in the event that lice have simply gotten ...
(Date:6/25/2016)... Lewisville, TX (PRWEB) , ... June 25, 2016 , ... ... in the United States, named Dr. Sesan Ogunleye, as the Medical Director of its ... be the facility Medical Director of our new Mesquite location,” said Dr. James M. ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... , Belgium , June 24, ... VNRX), today announced the appointment of Dr. ... Directors as a Non-Executive Director, effective June 23, ... Audit, Compensation and Nominations and Governance Committees.  As ... Futcher will provide independent expertise and strategic counsel ...
(Date:6/23/2016)... , June 23, 2016 Research ... Devices Global Market - Forecast to 2022" report to ... the treatment method for the patients with kidney failure, it ... excess fluid from the patient,s blood and thus the treatment ... potassium and chloride in balance. Increasing number ...
(Date:6/23/2016)... , June 23, 2016  In a startling report released ... failing their residents by lacking a comprehensive, proven plan to eliminate ... a definitive ranking of how states are tackling the worst drug ... only four states – Kentucky , ... Vermont . Of the 28 failing states, three – ...
Breaking Medicine Technology: