Landing from a jump can cause a non-contact anterior cruciate ligament (ACL) injury. But evidence presented at the Orthopaedic Research Society 2012 Annual Meeting demonstrates that the injury mechanism that causes that ACL injury involves a combination of factors rather than a single factor as some have claimed. Many hold the view that an athlete ruptures the ACL via a single plane motion -- the tibia moving forward due to a large quadriceps contraction.
Body
CHICAGO – Short-term exposure (for up to 7 days) to all major air pollutants, with the exception of ozone, is significantly associated with an increased risk of heart attack, according to a review and meta-analysis of previous studies appearing in the February 15 issue of JAMA.
CHICAGO – In a study that included data for more than 20,000 children and adolescents, higher amounts of time with moderate to vigorous physical activity were associated with better cardiometabolic risk factors (such as measures of cholesterol, blood pressure and waist size), regardless of the amount of time spent sedentary, according to a study in the February 15 issue of JAMA.
We like to think of ourselves as rational creatures, absorbing information, weighing it carefully, and making thoughtful decisions. But, as it turns out, we're kidding ourselves. Over the past few decades, scientists have shown there are many different internal and external factors influencing how we think, feel, communicate, and make decisions at any given moment.
Methicillin resistant staph aureus (MRSA) infections are resistant to antibiotics and can cause a myriad of problems -- bone erosion, or osteomyelitis, which shorten the effective life of an implant and greatly hinder replacement of that implant. MRSA can result in prolonged disability, amputation and even death.
When rabbis from the Orthodox Union started finding worms in cans of sardines and capelin eggs, they turned to scientists at the American Museum of Natural History to answer a culturally significant dietary question: could these foods still be considered kosher?
Do romance movies warm people up? A new study in the Journal of Consumer Research finds that yes, consumers choose romance movies over other genres when they feel cold.
"We often think of love as being warm. This link between love and warmth appears in everyday language, songs, and poems," write authors Jiewen Hong (Hong Kong University of Science and Technology) and Yacheng Sun (University of Colorado, Boulder). "But is the connection between romantic love and warmth just a metaphor or is there indeed a direct link between romance and physical warmth?"
Consumers react differently to units of measurement—depending on whether they are thinking concretely or abstractly, according to a new study in the Journal of Consumer Research.
Why do people reread books, watch movies multiple times, or visit places again? According to a new study in the Journal of Consumer Research, many people find that repeating experiences "reignites" their emotions.
"Even though people are already familiar with the stories or the places, re-consuming brings new or renewed appreciation of both the object of consumption and their self," write authors Cristel Antonia Russell (American University) and Sidney J. Levy (University of Arizona and Northwestern University). "By doing it again, people get more out of it."
What makes consumers choose certain products over others? A new study in the Journal of Consumer Research helps explain why consumers change their minds or switch their loyalties.
Studies of bacteria first found in Yellowstone's hot springs are furthering efforts at the Department of Energy's BioEnergy Science Center toward commercially viable ethanol production from crops such as switchgrass.
The current production of ethanol relies on the use of expensive enzymes that break down complex plant materials to yield sugars that are fermented into ethanol. One suggested cheaper alternative is consolidated bioprocessing, a streamlined process that uses microorganisms to break down the resistant biomass.
BOSTON--Scientists at Dana-Farber Cancer Institute have identified a subtype of ovarian cancer able to build its own blood vessels, suggesting that such tumors might be especially susceptible to "anti-angiogenic" drugs that block blood vessel formation.
CAMBRIDGE, Mass. (February 14, 2012) – Personal change can redefine or even save your life—especially if you are one of a hundred yeast cell clones clinging to the skin of a grape that falls from a sun-drenched vine into a stagnant puddle below. By altering which genes are expressed, cells with identical genomes like these yeast clones are able to survive in new environments or even perform different roles within a multicellular organism.
Tissue in monkeys infected with a close relative of HIV can ramp up production of a type of T cell that actually weakens the body's attack against the invading virus. The discovery, in lymph nodes draining the intestinal tract, could help explain how the HIV virus evades the body's immune defenses.
If the same pattern is found in people infected with HIV, the finding could lead to a treatment strategy that slows the production of this restraining type of T cell. This would let the immune soldiers go after the virus more aggressively.