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:11/15/2016)... , Nov 15, 2016 Research and ... Global Forecast to 2021" report to their offering. ... ... USD 16.18 Billion by 2021 from USD 6.21 Billion in 2016, ... Growth of the bioinformatics market is driven by the ...
(Date:6/22/2016)... 22, 2016  The American College of Medical Genetics and ... Magazine as one of the fastest-growing trade shows during ... the Bellagio in Las Vegas . ... of growth in each of the following categories: net square ... number of attendees. The 2015 ACMG Annual Meeting was ranked ...
(Date:6/20/2016)... 2016 Securus Technologies, a leading provider ... public safety, investigation, corrections and monitoring announced that ... has secured the final acceptance by all three ... Access Systems (MAS) installed. Furthermore, Securus will have ... installed by October, 2016. MAS distinguishes between legitimate ...
Breaking Biology News(10 mins):
(Date:12/8/2016)... ... December 08, 2016 , ... From wearable devices that can ... sports. On Thursday, December 15th a panel of entrepreneurs, innovators and a Philadelphia ... at a Smart Talk session. Smart Talk will run from 8:30 – 10:30 ...
(Date:12/8/2016)... , ... December 08, 2016 , ... ... to control cells — optogenetics — is key to exciting advances in the ... art, spatially patterned light projected via free-space optics stimulates small, transparent organisms and ...
(Date:12/8/2016)... ... December 08, 2016 , ... KBioBox llc announced today ... demand KbioBox developed a sophisticated “3 click” gene dditing off target analysis program ... new website, https://www.kbiobox.com/ and powered by the company’s proprietary BioEngine. ...
(Date:12/8/2016)... 8, 2016 Soligenix, Inc. (OTCQB: SNGX) (Soligenix ... developing and commercializing products to treat rare diseases where ... it will be hosting an Investor Webcast Event Friday, ... origins of innate defense regulators (IDRs) as a new ... mucositis and the recently announced and published Phase 2 ...
Breaking Biology Technology: