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:2/20/2017)... ... 20, 2017 , ... Chuck E. Cheese’s® and Center for Autism and Related ... Chuck E. Cheese’s locations throughout New England, New York and New Jersey to provide ... the fun of visiting Chuck E. Cheese’s in a sensory-friendly environment. , After ...
(Date:2/19/2017)... ... February 19, 2017 , ... The Citadel’s new Swain Department ... being led by Amelia Joseph, Ph.D. Joseph was engaged by the college as a ... department in early 2016. After a nation-wide search, she was selected to head the ...
(Date:2/19/2017)... ... February 19, 2017 , ... ... result in better care, and MEDfx and the Delaware Health Information Network (DHIN) ... , As the nation’s first state-wide health information exchange, DHIN stores and shares ...
(Date:2/18/2017)... Waltham, Massachusetts (PRWEB) , ... February 17, 2017 ... ... be the leading source of disruptive innovation in the industry, according to the ... Insights Reports are based on surveys of the NEJM Catalyst Insights Council, a ...
(Date:2/18/2017)... ... February 17, 2017 , ... Park Cities Pet Sitter President, Joette White, ... Pet Life Radio network. The episode, which was posted this week, features a ... factors led to Park Cities Pet Sitter’s being awarded the 2017 National Association of ...
Breaking Medicine News(10 mins):
(Date:2/19/2017)... Feb. 19, 2017   AC Group Inc. , ... ranking of vendors in the PMS/EHR healthcare marketplace, will ... system requirements to succeed in this ecosystem at HIMSS,17. ... together information obtained from over 200 ACOs, compared and ... and services companies that are providing different pieces of ...
(Date:2/19/2017)... , February 18, 2017 Marapharm ... to purchase a Medical Delivery Service with the specific ... transactions between qualified patients and caregivers. The delivery service ... located in the Coachella Valley, California ... Los Angeles area to the West, population ...
(Date:2/18/2017)... Feb. 17, 2017   Parker Waichman ... the rights of victims injured by medical devices, ... to call for better reporting. Congress required hospitals ... Safety concerns involving power morcellators and duodenoscopes prompted ... investigate how hospitals report injuries and deaths related ...
Breaking Medicine Technology: