Navigation Links
Muscles May Need Estrogen to Regain Strength, Especially as Women Age

It is believed that menopause plays a role in the loss of muscle mass as women age. Inactivity also can result in an accelerated loss of muscle //mass and strength in aging women. Now, a University of Missouri-Columbia researcher studied the effect of inactivity combined with the loss of estrogen and was surprised by the results.

"It was not a lifestyle link; it was an estrogen link," said Marybeth Brown, professor of physical therapy in MU’s School of Health Professions. "The role of female sex hormones on skeletal muscle has been unclear in the past. In fact, some reports have suggested that the hormones have no effect."

Brown studied the effect of low hormone levels combined with physical inactivity in rats. The rats' ovaries were removed, and the rats were then put on "simulated bed rest" for four weeks. Surprisingly, the loss of muscle mass and strength that occurred with the simulated bed rest was similar in rats with and without normal estrogen levels. What was not the same was the recovery of muscle mass in rats that lacked estrogen. Brown found that the muscle atrophy that occurred during the bed rest was not regained in rats that lacked estrogen. Rats with normal estrogen levels - intact ovaries - had a robust recovery of muscle mass and strength after the simulated bed rest was complete.

"Women now spend a third of their lives in an estrogen-depleted state; years ago, women did not even survive long enough to have a menopause," Brown said. "Consequently, we need to know as much about the potential consequences of estrogen loss as possible. If estrogen-deficient women are failing to recover muscle mass from the bed rest associated with the flu or a hospitalization, the implications for old age are quite significant. We need all the muscle mass we can get to make it through old age without losing independence."

Women lose 10 to 15 percent of their muscle mass between the ages of 20 and 50, and then the decline accelerates. Loss of muscle mass and strength is a natural phenomenon, and once muscle is lost, it cannot be regained. According to Brown, women can increase their muscle mass through resistance exercise, which will help maintain independence for a longer period of time. If women are sedentary, they will lose muscle mass and strength faster than normal. Results from the study suggest that sedentary living combined with bouts of bed rest may put estrogen deficient women at a very high risk for losing independence.

(Source: Newswise)
'"/>




Related medicine news :

1. Strong Pelvic Muscles Found To Facilitate Childbirth
2. Expect Aching Muscles And Joints This Sports Season
3. Solitons Could Power Molecular Electronics, Artificial Muscles
4. Genes Identified To Protect Heart Muscles
5. Fat Metabolism Of Heart Muscles Affected By High Blood Pressure
6. Training Breathing Muscles Improves Swimmers Performance
7. Estrogen lowers cancer risk
8. Estrogen Does Not Prevent Recurrent Strokes
9. Herbs With Estrogen Action Aggravate Cancer Risk
10. Osteoarthritis and Estrogen are connected
11. Estrogen Patch is Safer than Pills for Heart
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/29/2016)... , ... April 29, 2016 , ... ... healthcare awareness and author of best seller "LOVE, MEDICINE and MIRACLES") addresses touchy ... May 2, 2016 and podcasted thereafter . Dr. Bernie Siegel, author of ...
(Date:4/29/2016)... (PRWEB) , ... April 29, 2016 , ... ... surgeon reveals that infants born with severe congenital diaphragmatic hernia have better survival ... born with congenital diaphragmatic hernia (CDH)—a condition where the diaphragm fails to form ...
(Date:4/29/2016)... (PRWEB) , ... April 29, 2016 , ... ... engineer of patented products, announces the Gyrociser, an exercise invention which aids in ... $2 billion," says Scott Cooper, CEO and Creative Director of World Patent Marketing. ...
(Date:4/29/2016)... New York, NY (PRWEB) , ... April 29, 2016 , ... New York City based ... surgery . This surgery is a very effective way to treat obstructive sleep apnea. Dr. ... , Orthognathic surgery is a procedure that involves one or both jaw bones. This ...
(Date:4/29/2016)... ... April 29, 2016 , ... Innovations with ... in an upcoming episode, airing third quarter 2016 via Discovery Channel. Dates and ... butter, Grassland Dairy Products, located in Greenwood, Wisconsin applies product research and development ...
Breaking Medicine News(10 mins):
(Date:4/27/2016)... -- Hologic, Inc. (Nasdaq: HOLX ) announced ... second quarter ended March 26, 2016.  GAAP diluted ... and non-GAAP diluted EPS of $0.47 increased 14.6%.  ... reported basis, and 6.3% on a constant currency ... quarter, highlighted by 14.6% growth in non-GAAP EPS," ...
(Date:4/27/2016)... 27, 2016 Transparency Market Research ... Market - Global Industry Analysis, Size, Share, Growth, Trends, ... the global skincare devices market was valued at US$ ... at a CAGR of 10.1% from 2015 to 2023 ... Browse the full Skincare Devices Market (Treatment Device - LED ...
(Date:4/27/2016)... , April 27, 2016 ... of the  "Global Anesthesia Disposables Market 2016-2020" ... http://photos.prnewswire.com/prnh/20160330/349511LOGO ) ,The global anesthesia disposables ... CAGR of 4.03% during the period 2016-2020.  ... major threat to patients, safety. Organizations like ...
Breaking Medicine Technology: