Navigation Links
Women do not recover their muscle strength as fast as men
Date:9/24/2008

HILTON HEAD, SCWomen are four times more likely than men to experience a broken forearm and require a cast (immobilization). To examine whether the effects of casting were similar between the sexes, researchers examined immobilized volunteers for a period of three weeks. They determined that while men were able to regain 99% of their strength within a week of removing the cast, women's strength was still 30% lower when compared to before the cast was applied. These finding may have implications for the treatment of fractures based on gender lines.

The study is believed to be the first report of sex-differences in muscle strength restoration following disuse. It was conducted by Brian C. Clark, Richard L. Hoffman, and David W. Russ of Ohio University, Athens; and Todd M. Manini of the University of Florida, Gainesville. The researchers will discuss their study, "Restoration of Voluntary Muscle Strength Following 3-Weeks of Cast Immobilization Is Suppressed in Women Compared to Men," at the American Physiological Society (APS) (www.The-APS.org) conference, The Integrative Biology of Exercise V. The meeting will be held September 24-27, 2008 in Hilton Head, SC. The journal Archives of Physical Medicine and Rehabilitation has also accepted a 'brief report' of this preliminary data for rapid publication.

The Study

Ten healthy volunteers completed three weeks of forearm immobilization (5 females, 5 males; 18-29 years of age). The subjects were fitted with a forearm cast on their non-dominant arm and each persons wrist muscle strength was determined weekly during the immobilization phase, and a week after the casts were removed. The measurements taken prior to the casting were repeated to detect any gender differences that may have developed over the course of splinting or recovery.

Results

The research team found:

  • men's strength had returned to baseline levels one week after the cast was removed;

  • women's recovery levels were significantly lower, one week after the cast was removed they still exhibited strength deficits of approximately 30% below baseline. All the women exhibited a slow recovery of their strength (at least a 15% reduction relative to baseline); whereas only one of the men showed a similar deficit.

Conclusions

In explaining possible reasons for the discrepancies, Dr. Clark suggested that hormones, and the role they play in regulating muscle mass, may contribute to slower recovery times in women. According to Dr. Clark, "This finding is preliminary and on a very small sample size, so, we must caution against over-interpreting our work. However, it certainly indicates that more work needs to be done to confirm and understand the reasons for these discrepancies and the extent to which they occur. However, when our findings are examined in the context of existing work of others, they suggest that women may require additional, or more intensive, rehabilitation programs following periods of immobilization or bed rest."


'/>"/>

Contact: Donna Krupa
DKrupa@The-APS.org
703-967-2751
American Physiological Society
Source:Eurekalert

Related biology news :

1. Drug could improve pregnancy outcomes in wider range of women with insulin resistance
2. Women more depressed and men more impulsive with reduced serotonin functioning
3. Pregnant women at risk for unnecessary operations due to misdiagnosis of appendicitis
4. Cell response to stress signals predicts tumors in women with common pre-breast cancer
5. Too few women scientists achieving academic leadership positions
6. Gender roles and not gender bias hold back women scientists
7. Women with AIDS face cervical cancer threat
8. New folic acid seal helps women choose enriched grain foods to help prevent birth defects
9. Do attractive women want it all?
10. Womens health-related scientific findings presented by University of Pittsburgh researchers
11. Journal of Womens Health named official journal of American Medical Womens Association
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/9/2016)... March 9, 2016 This BCC Research report ... of the RNA Sequencing (RNA Seq) market for the ... instruments, tools and reagents, data analysis, and services. ... of the RNA-Sequencing market such as RNA-Sequencing tools and ... main factors affecting each segment and forecast their market ...
(Date:3/9/2016)... GARDENS, Fla. , March 9, 2016 /PRNewswire/ ... management authentication and enrollment solutions, today announced the ... DigitalPersona ® Altus multi-factor authentication platform. ... and InfoSec managers to step-up security where it,s ... Washington, DC . ...
(Date:3/3/2016)... , March 3, 2016  FlexTech, a SEMI Strategic ... of Innovation, Research & Development, Leadership in Education, and, ... is the 9 th year of the FLEXI ... companies and individuals from past years . Judging ... a pre-described set of criteria, by a panel of ...
Breaking Biology News(10 mins):
(Date:5/25/2016)... ... May 25, 2016 , ... Lajollacooks4u has become a ... consistently been rated one of its top attractions. Fortune 500 companies, such as ... in a unique and intimate team-building experience. , Each event kicks off with an ...
(Date:5/25/2016)... AZ (PRWEB) , ... May 25, 2016 , ... ... Dr. Michael Fitzmaurice recently became double board-certified in surgery and surgery of the ... 2015. Dr. Fitzmaurice is no stranger to going above and beyond in his ...
(Date:5/25/2016)... ... May 25, 2016 , ... WEDI, the nation’s leading authority on the use ... W. Stellar has been named by the WEDI Board of Directors as WEDI’s president ... executive leader with more than 35 years of experience in healthcare, association management and ...
(Date:5/24/2016)... ... May 24, 2016 , ... Cell therapies for ... be accelerated by research at Worcester Polytechnic Institute (WPI) that yielded a newly ... tissue regeneration. , The novel method, developed by WPI faculty members Raymond Page, ...
Breaking Biology Technology: