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:6/14/2017)... IBM ) is introducing several innovative partner startups at VivaTech ... startups and global businesses, taking place in Paris ... will showcase the solutions they have built with IBM Watson ... France is one of the most dynamic ... in the number of startups created between 2012 and 2015*, ...
(Date:5/6/2017)... 2017 RAM Group , Singaporean ... breakthrough in biometric authentication based on a ... to perform biometric authentication. These new sensors are based ... by Ram Group and its partners. This sensor will ... chains and security. Ram Group is a next ...
(Date:4/17/2017)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the "Company"), ... Report on Form 10-K on Thursday April 13, 2017 with the ... The ... section of the Company,s website at http://www.nxt-id.com  under "SEC Filings," ... 2016 Year Highlights: Acquisition of ...
Breaking Biology News(10 mins):
(Date:6/27/2017)... ... , ... According to a recent report from the Environmental ... negative short- or long-term effects on benthic communities. , The ESTCP evaluated ... the Puget Sound Naval Shipyard & Intermediate Maintenance Facility in Bremerton, Washing. Data ...
(Date:6/26/2017)... ... June 26, 2017 , ... Third Wave Bioactives, LLC announces ... Director, focused on leading new business development and ensuring quality customer experience. ... the food ingredient industry in technical, marketing and sales roles. “Brett’s background working with ...
(Date:6/23/2017)... ... 2017 , ... RURO, Inc., a leading LIMS, RFID, LIS ... growing Laboratory Information System. , LimitLIS® version 3 is includes new features that ... customization options. Each of these has been “under the microscope” in recent months ...
(Date:6/22/2017)... ... June 21, 2017 , ... ... top executive talent in the life sciences industry, today announces a strategic partnership ... The partnership takes full advantage of Beaker’s expertise in executive recruitment solutions, providing ...
Breaking Biology Technology: