Navigation Links
Athletic girls more likely to have impaired bone structure if menstrual cycle stops
Date:6/6/2011

Young female athletes who have stopped menstruating have a weakening in the quality of their bone structure that may predispose them to breaking a bone, despite getting plenty of weight-bearing exercise, a new study finds. The results will be presented Sunday at The Endocrine Society's 93rd Annual Meeting in Boston.

"Given the high number of young women and girls involved in athletic activities and the fact that up to 24% of young female athletes may lose their periods, this finding represents a significant public health concern," said Madhusmita Misra, MD, the study's principal investigator.

Misra, a pediatric endocrinologist at Massachusetts General Hospital in Boston, said amenorrhea, or absence of menstruation, can result from intense physical activity, either alone or combined with inadequate intake of calories. In a previous study, Misra found that athletes who lose their periods have low bone density, a risk factor for fracture and premature osteoporosis. Because abnormal bone structure (microarchitecture) is a known independent risk factor for fractures among older women, she assessed it in the current study.

Misra and her colleagues studied 34 endurance athletes, ages 15 to 21, all of whom were involved in running or other weight-bearing activities. Sixteen athletes had no periods, and 18 had normal menstruation. The investigators studied the athletes' bone density and bone microarchitecture, and compared these measures with those from 16 nonathletic controls. To assess bone structure, they used a form of CT scanning called high-resolution peripheral quantitative computed tomography.

They found that nonmenstruating athletes have a bone structure that is abnormal compared with menstruating athletes and nonathletes. Differences were seen in cortical bone (the outer rim of compact bone) and in trabecular (spongy) bone at both sites studied: the tibia, or shinbone, and even a non-weight-bearing site, one of the long forearm bones near the wrist. Athletes who still got their menstrual periods did not have impaired bone structure, the researchers reported.

"Our results are of particular concern to teenagers and young women, who are at a time in their lives when they should be actively accumulating bone and optimizing peak bone mass," she said.

Peak bone mass, the amount of bone present at the end of skeletal maturity, is usually achieved by the mid-20s and is an important factor in determining future bone health.

The study, which was funded by the National Institute of Child Health Development, also found that later age at starting menstruation was associated with a greater chance of bone structure impairments.

"Bone microarchitecture may provide information regarding bone health independent of bone mineral density," Misra said. "Your bone density score may not reveal the full risk of poor bone strength."


'/>"/>

Contact: Aaron Lohr
alohr@endo-society.org
240-482-1380
The Endocrine Society
Source:Eurekalert

Related biology news :

1. Heat acclimation benefits athletic performance
2. Compression clothing and athletic performance -- functional or fad?
3. Impact sensor provides athletic support
4. Study: Popular supplement quercetin does not enhance athletic performance
5. Early male friendship as a precursor to substance abuse in girls
6. High-caffeine-consuming boys get greater rush from caffeine than girls
7. Loss of nutrients following gastric bypass surgery in adolescent girls
8. Father absence linked to earlier puberty among certain girls
9. Girls early puberty linked to unstable environment via insecure attachment in infancy
10. Doctors not strongly encouraging HPV vaccine to girls of certain age
11. More than half of Texas physicians do not always recommend HPV vaccine to girls
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/11/2017)... 2017 No two people are believed ... New York University Tandon School of Engineering and ... that partial similarities between prints are common enough ... phones and other electronic devices can be more ... lies in the fact that fingerprint-based authentication systems ...
(Date:4/6/2017)... -- Forecasts by Product Type (EAC), Biometrics, ... (Transportation & Logistics, Government & Public Sector, Utilities / ... Facility, Nuclear Power), Industrial, Retail, Business Organisation (BFSI), Hospitality ... looking for a definitive report on the $27.9bn Access ... ...
(Date:4/5/2017)... , April 5, 2017 Today HYPR ... that the server component of the HYPR platform is ... providing the end-to-end security architecture that empowers biometric authentication ... HYPR has already secured over 15 million users across ... manufacturers of connected home product suites and physical access ...
Breaking Biology News(10 mins):
(Date:4/24/2017)...  Dante Labs announced today the offer of whole genome ... While American individuals have been able to access WGS at ... WGS below EUR 1,000. The sequencing includes bioinformatics ... to make informed decisions about disease monitoring, prevention, nutrition, exercise, ... ...
(Date:4/21/2017)... ... April 21, 2017 , ... The University of Connecticut, ... funding to three startups through the UConn Innovation Fund. The $1.5 million UConn ... affiliated with UConn. , The UConn Innovation Fund provides investments of up to ...
(Date:4/21/2017)... ... , ... Frederick Innovative Technology Center, Inc. (FITCI), a business ... start-ups, is hosting “Celebration Friday” (a festive gathering highlighting client success stories) and ... networking at 3:30 p.m. at FITCI’s 4539 Metropolitan Court location, off English Muffin ...
(Date:4/20/2017)... TX; Ultrecht, Netherlands (PRWEB) , ... April 20, ... ... Qafis Biometrics Technology today announced their strategic partnership to offer a full ... digital identity authentication, a comprehensive suite of biometric products and the ground-breaking proactive ...
Breaking Biology Technology: