Navigation Links
Knee injuries may start with strain on the brain, not the muscles
Date:7/24/2009

ANN ARBOR, Mich.---New research shows that training your brain may be just as effective as training your muscles in preventing ACL knee injuries, and suggests a shift from performance-based to prevention-based athletic training programs.

The ACL, or anterior cruciate ligament, is one of the four major ligaments of the knee, and ACL injuries pose a rising public health problem as well as an economic strain on the medical system.

University of Michigan researchers studying ACL injuries had subjects perform one-legged squats to fatigue, then tested the reactions to various jumping and movement commands. Researchers found that both legs---not just the fatigued leg---showed equally dangerous and potentially injurious responses, said Scott McLean, assistant professor with the U-M School of Kinesiology. The fatigued subjects showed significant potentially harmful changes in lower body movements that, when preformed improperly, can cause ACL tears.

"These findings suggest that training the central control process---the brain and reflexive responses---may be necessary to counter the fatigue induced ACL injury risk," said McLean, who also has an appointment with the U-M Bone & Joint Injury Prevention Center.

McLean says that most research and prevention of ACL injuries focuses below the waist in a controlled lab setting, but the U-M approach looks a bit north and attempts to untangle the brain's role in movements in a random, realistic and complex sports environments.

The findings could have big implications for training programs, McLean said. Mental imagery or virtual reality technology can immerse athletes to very complex athletic scenarios, thus teaching rapid decision making. It might also be possible to train "hard wired" spinal control mechanisms to combat fatigue fallout.

In a related paper, McLean's group again tested the single leg landings of 13 men and 13 women after working the legs to fatigue. While both men and women suffer an epidemic of ACL injuries, women are two to eight times likelier to tear this ligament than men while playing the same sport. However, the study showed that men and women showed significant changes in lower limb mechanics during unanticipated single leg landings. Again, the findings point to the brain, McLean says.

During testing, a flashing light cued the subjects to jump in a certain direction, and the more fatigued the subjects became, the less likely they were able to react quickly and safely to the unexpected command.

The research suggests that training the brain to respond to unexpected stimuli, thus sharpening their anticipatory skills when faced with unexpected scenarios, may be more beneficial than performing rote training exercises in a controlled lab setting, which is much less random than a true competitive scenario. In this case, expanding the anticipated training to include shorter stimulus-response times could improve reaction time in random sports settings.

"If you expose them to more scenarios, and train the brain to respond more rapidly, you can decrease the likelihood of a dangerous response," he said. It's analogous to how a seasoned stick shift driver versus a novice learner might both respond to a sudden stall. The inexperienced driver might make a slow or even incorrect decision.


'/>"/>

Contact: Laura Bailey
baileylm@umich.edu
734-746-1552
University of Michigan
Source:Eurekalert

Related biology news :

1. Half of the people suffering from head injuries fake to receive financial help
2. Engineer to spearhead research into cell metabolism and medical injuries
3. Technique used in human ankle injuries modified to treat dogs knees
4. Stent grafts: a better way to treat blunt trauma injuries
5. UT to develop fracture putty for traumatic leg injuries
6. Mating that causes injuries
7. Novel veterinary procedure detecting life-threatening injuries touted
8. A recipe for dog bite injuries: Kids, dogs and warm weather
9. Risk of vibration-induced vascular injuries linked to vibration frequency differences
10. New center at Georgia Tech aims to improve recovery of soldiers with severe injuries
11. Girls who begin dieting twice as likely to start smoking
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/5/2017)... SEATTLE , April 5, 2017  The Allen ... the Allen Cell Explorer: a one-of-a-kind portal and dynamic ... large-scale 3D imaging data, the first application of deep ... edited human stem cell lines and a growing suite ... the platform for these and future publicly available resources ...
(Date:4/3/2017)... WASHINGTON , April 3, 2017 /PRNewswire-USNewswire/ ... single-cell precision engineering platform, detected a statistically ... cell product prior to treatment and objective ... highlight the potential to predict whether cancer ... prior to treatment, as well as to ...
(Date:3/29/2017)... CHICAGO , March 29, 2017  higi, the ... ecosystem in North America , today ... Partners and the acquisition of EveryMove. The new investment ... extensive set of tools to transform population health activities ... and lifestyle data. higi collects and secures ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... (PRWEB) , ... October 11, 2017 , ... ComplianceOnline’s Medical ... place on 7th and 8th June 2018 in San Francisco, CA. The Summit brings ... well as several distinguished CEOs, board directors and government officials from around the world ...
(Date:10/11/2017)... ... October 11, 2017 , ... A new study published in ... and fresh in vitro fertilization (IVF) transfer cycles. The multi-center matched ... , After comparing the results from the fresh and frozen transfer cohorts, the ...
(Date:10/10/2017)... ... October 10, 2017 , ... Dr. Bob Harman, founder and ... San Diego Rotary Club. The event entitled “Stem Cells and Their ... 300+ attendees. Dr. Harman, DVM, MPVM was joined by two human doctors: Peter ...
(Date:10/9/2017)... DIEGO , Oct. 9, 2017  BioTech ... biological mechanism by which its ProCell stem cell ... critical limb ischemia.  The Company, demonstrated that treatment ... amount of limbs saved as compared to standard ... the molecule HGF resulted in reduction of therapeutic ...
Breaking Biology Technology: