Navigation Links
When your brain talks, your muscles don't always listen

periods when the neurons fire faster, from slower periods of activity.

The results showed lower firing rates among older subjects versus younger subjects--a diminished ability of the muscle fibers to "hear" and respond to the neurons' commands.

"The repeated contraction of muscles is essential to movements such as walking," Knight said. "However, our muscles have a reduced capacity to contract or 'twitch' as we grow older. We lose fast-twitch muscle fibers as we age."

However, there are steps we can take to preserve this critical motor capacity, according to Knight.

"After power training with weights, we see an increase in firing rates," Knight said. "For safety, we're commonly advised to do things slowly when exercising, but it's important to also do some fast exercises. You need a fast movement to prevent a fall. Even in the frail elderly, it is possible to use exercise bands for manual resistance to improve the speed of movement."

Knight has always been interested in how the body adapts to exercise. When he entered college years ago, his goal was to become an elite track-and-field athlete. While he competed well, he realized that his dreams lay elsewhere, and his attention focused full force on academics.

At the University of Connecticut, a class on the biology of the brain introduced him to the nervous system and movement, and he was hooked. His interests were further piqued during a summer research experience, where he had the opportunity to work with wheelchair athletes.

"People with severe spinal cord injuries have limited cooling because they can't perspire below the site of injury," Knight said, "so their core body temperature can reach dangerous levels."

In graduate school, he decided to pursue motor control research, and he's never looked back.

"My early interests were based on sport, but my career in this field now allows me to address a much larger population that
'"/>

Source:University of Delaware


Page: 1 2 3 4

Related biology news :

1. Controversial drug shown to act on brain protein to cut alcohol use
2. Mouse brain cells rapidly recover after Alzheimers plaques are cleared
3. Mouse brain tumors mimic those in human genetic disorder
4. New imaging method gives early indication if brain cancer therapy is effective, U-M study shows
5. First atlas of key brain genes could speed research on cancer, neurological diseases
6. NYU study reveals how brains immune system fights viral encephalitis
7. Stem cells from brain transformed to produce insulin at Stanford
8. Birds brains reveal source of songs
9. Loves all in the brain: fMRI study shows strong, lateralized reward, not sex, drive
10. Revolutionary nanotechnology illuminates brain cells at work
11. A puzzle piece found in unraveling the wiring of the brain
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: When your brain talks your muscles don always listen

(Date:4/18/2014)... of researchers led by a University of California, Riverside ... $7.5 million Department of Defense grant to uncover fundamental ... for the predictable design of light-weight, tough and strong ... from plants and animals, including the mantis shrimp, toucan ... have constructed over millions of years and coming up ...
(Date:4/17/2014)... Respiratory syncytial virus (RSV) is a leading cause ... in very young and elderly populations. Despite great ... cells through the fusion protein RSV F, which ... that prevent bundle formation limit RSV infection in ... degradation. In this issue of the Journal ...
(Date:4/17/2014)... Foundation has been named awardee of a three-year ... Defense Spinal Cord Injury Research Program. Gail Forrest, ... double-blinded, controlled, multi-site clinical trial, which will test ... spinal cord injury. Dr. Forrest is assistant director ... Foundation. Two additional sites will participate - the ...
Breaking Biology News(10 mins):Mantis shrimp, toucan and trilobite, oh my 2Mantis shrimp, toucan and trilobite, oh my 3JCI online ahead of print table of contents for April 17, 2014 2JCI online ahead of print table of contents for April 17, 2014 3JCI online ahead of print table of contents for April 17, 2014 4JCI online ahead of print table of contents for April 17, 2014 5JCI online ahead of print table of contents for April 17, 2014 6Kessler Foundation awarded Department of Defense grant for spinal cord injury research 2
... El Nio was associated with higher mortality for eggs and ... could be worsened by continuing global climate change, according to ... PLoS ONE . The El Nio Southern Oscillation brought ... major nesting sites in the area. The researchers, led by ...
... 25, 2012 Babolat, international specialized tennis ... "Babolat Play & Connect," at the French Open. The ... nearly infinite potential. Welcome to the tennis of the ... first interactive racquet with organized demonstrations featuring amateur players ...
... in German . In the animal world, ... is the most beautiful. A well-known example is the peacock. The ... research team at Bielefeld University headed by the evolutionary biologist Dr. ... involved in mate choice among locusts. The male Siberian locust ( ...
Cached Biology News:"Babolat Play & Connect" - Worldwide Exclusive Event at the French Open 2"Babolat Play & Connect" - Worldwide Exclusive Event at the French Open 3"Babolat Play & Connect" - Worldwide Exclusive Event at the French Open 4A mating dance with Popeye arms 2
(Date:1/15/2014)... January 15, 2014 Two champions of ... their sponsorship of an annual competition for middle and ... access to, innovative STEM study. The competition presents students ... Tests of Engineering Aptitude, Mathematics, and Sciences is ...
(Date:1/15/2014)... Freeslate, Inc ., the leading ... Lupin Limited, one of India’s top five pharmaceutical companies, ... System for high throughput solid form screening. ... a wide range of quality, affordable generic and branded ...
(Date:1/14/2014)... (PRWEB) January 14, 2014 Carahsoft and ... Thursday, January 23, 2014 at 2pm EST (11am PST), ... The topic focuses on how technology can turn raw, ... decisions for government agencies. The online webinar will last ...
(Date:1/14/2014)... January 14, 2014 EquitiesIQ, a leading ... (OTCQB: ALQA). Alliqua is an emerging biomedical company acquiring, ... wound care market. , Free report download: http://equitiesiq.com/reports/alliqua/ ... a seasoned management team and Board, which launched the ...
Breaking Biology Technology:Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 5Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3Webcast - Natural Language Processing: Converting Raw Data into Actionable Knowledge – Hosted by Carahsoft and CDS Federal Services 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3
... DuPont Senior,Vice President and Chief Science & Technology Officer ... in the formation of global,policy during a discussion at ... of science is to inform the policymaking process, to ... limits of what is,knowable, and what is possible," Chowdhry ...
... Massive Rebuilding Effort for Tornado-Torn ... Health Care Facility, ... struggle to rebuild following a devastating 2007 tornado,Siemens has announced that, ... Ga. facility with a new MAGNETOM ESSENZA, worth,approximately $800,000., Siemens ...
... Arena Pharmaceuticals,Inc. (Nasdaq: ARNA ) announced today ... trial of a second generation oral niacin receptor agonist,under ... the,treatment of atherosclerosis and other disorders. The initiation of ... are very pleased with the progress of this collaboration,investigating ...
Cached Biology Technology:DuPont Chief Science & Technology Officer Offers Perspectives on Science and Global Policymaking at Davos World Economic Forum 2DuPont Chief Science & Technology Officer Offers Perspectives on Science and Global Policymaking at Davos World Economic Forum 3A Magnetic Gift: Sumter Regional Hospital Receives New MRI as Charitable Donation From Siemens 2Arena Pharmaceuticals Announces Initiation of Phase 1 Clinical Trial of Second Generation Niacin Receptor Agonist Under Its Collaboration With Merck & Co., Inc. 2Arena Pharmaceuticals Announces Initiation of Phase 1 Clinical Trial of Second Generation Niacin Receptor Agonist Under Its Collaboration With Merck & Co., Inc. 3
Request Info...
...
Collected from sexually mature mice....
Sterile concentration of Dithiothreitol (DTT) solution in phosphate buffer (pH 7.0). Dilute contents in one vial (10- fold) to 100 ml. For use in liquefying sputum samples....
Biology Products: