Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Twist and ouch

26.03.2002


Women don’t bend as much as men do when they land a jump.


Scientists make strides in the study of women’s sports injuries.

Straighter legs and knock-knees may be causing female athletes to tear knee ligaments more frequently than males. The finding could help coaches to shape women’s training to reduce such injuries.

When researchers at the University of North Carolina spotted that women land with their knees straighter and closer together than do men, they asked the athletes to spring on and off platforms that measure force in several directions. This revealed that women also put more twisting force on their knees1.



Sudden twisting or excess pressure at a knee joint can stretch or tear the anterior cruciate ligament, or ACL, which connects the thigh bone to the shin bone. Often accompanied by a sickening pop, ACL injuries are nearly eight times more common in women than men in sports such as basketball, soccer or volleyball.

Women may put more force on their knees because they tend to use their quadriceps, rather than their hamstrings, to jump and turn. Training female athletes to decelerate using their leg muscles differently and to bend more at the knees when they land could prevent many ACL injuries.

G. Guerrieri women’s soccer coach at Texas A&M University, certainly thinks so. "In the autumn 2000 season, we had six ACL injuries. In the spring of 2001, we had zero," says Guerrieri. In the interim the team participated in a pilot biomechanics-based injury-prevention program inspired by earlier work from the University of North Carolina team.

Previous studies of knee injuries in women have focused on physical variables, such as ligament size or menstrual cycle. As Bing Yu, one of the UNC scientists, explains, "most people were unaware of motor control as a problem that brings women closer to the point of injury".

Hormones and anatomical differences certainly contribute to injury risk. But, as sports injury researcher Julie Gilchrist of the Centers for Disease Control and Prevention in Atlanta, Georgia points out, "you can’t pull a player from the game because she’s getting her period". You can, however, train her to move safely.

References

  1. Chappell, J.D., Yu, B., Kirkendall, D.T. & Garrett, W.E. A comparison of knee kinetics between male and female recreational athletes in stop-jump tasks. American Journal of Sports Medicine, 30, 261 - 267, (2002).


JESSICA PROKUP | © Nature News Service

More articles from Health and Medicine:

nachricht 'Living bandages': NUST MISIS scientists develop biocompatible anti-burn nanofibers
16.02.2018 | National University of Science and Technology MISIS

nachricht New process allows tailor-made malaria research
16.02.2018 | Eberhard Karls Universität Tübingen

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Demonstration of a single molecule piezoelectric effect

Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale

Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...

Im Focus: Hybrid optics bring color imaging using ultrathin metalenses into focus

For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.

But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...

Im Focus: Stem cell divisions in the adult brain seen for the first time

Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.

The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...

Im Focus: Interference as a new method for cooling quantum devices

Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters

Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...

Im Focus: Autonomous 3D scanner supports individual manufacturing processes

Let’s say the armrest is broken in your vintage car. As things stand, you would need a lot of luck and persistence to find the right spare part. But in the world of Industrie 4.0 and production with batch sizes of one, you can simply scan the armrest and print it out. This is made possible by the first ever 3D scanner capable of working autonomously and in real time. The autonomous scanning system will be on display at the Hannover Messe Preview on February 6 and at the Hannover Messe proper from April 23 to 27, 2018 (Hall 6, Booth A30).

Part of the charm of vintage cars is that they stopped making them long ago, so it is special when you do see one out on the roads. If something breaks or...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

2nd International Conference on High Temperature Shape Memory Alloys (HTSMAs)

15.02.2018 | Event News

Aachen DC Grid Summit 2018

13.02.2018 | Event News

How Global Climate Policy Can Learn from the Energy Transition

12.02.2018 | Event News

 
Latest News

Fingerprints of quantum entanglement

16.02.2018 | Information Technology

'Living bandages': NUST MISIS scientists develop biocompatible anti-burn nanofibers

16.02.2018 | Health and Medicine

Hubble sees Neptune's mysterious shrinking storm

16.02.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>