New research from McMaster University is challenging traditional workout wisdom, suggesting that lifting lighter weights many times is as efficient as lifting heavy weights for fewer repetitions.
It is the latest in a series of studies that started in 2010, contradicting the decades-old message that the best way to build muscle is to lift heavy weights.
Anyone who has ever taken a group photo will be familiar with the problem: If everyone is constantly running around, it's almost impossible to get a sharp photo. Cell biologists who want to visualize molecular processes inside cells face a similar challenge. The molecules dance about at high speed. Receptors at the cell surface move within milliseconds, while vesicles transport proteins in seconds.
WEST LAFAYETTE, Ind. - Purdue University researchers have developed an algorithm that quantifies and analyzes shape changes in puzzle piece-shaped plant cells, providing insights into the small-scale processes that control leaf size and crop yield.
The technology could also be adapted to measure boundary shifts in other complex geometric forms, from neuron cells and tumors to shorelines and glaciers.
They are some of the rarest reptiles in the world. According to the latest surveys, there are not even 250 adult ploughshare tortoises left to crawl through the dry forests of north-west Madagascar. This means that the species, known by the scientific name of Astrochelys yniphora, is on the brink of extinction. The government of this island state did create the Baly Bay National Park in 1997 especially to protect the remaining individuals of the species. And the international trade with this species is completely forbidden. Although this does not seem to deter trappers and smugglers.
BOSTON (July 12, 2016)--Professional football players are heftier now than they were decades ago, but a new study from researchers at Tufts University School of Medicine shows that even players for less-prominent college football programs are getting bigger. The Tufts researchers report that the average weight of offensive linemen in a Division III collegiate football conference has increased nearly 38 percent since 1956, while the average male's weight increased only 12 percent during the same timeframe.
Realizing the risks of social media, major news organizations have created guidelines for employees regarding how to use these outlets, separate from the companies' existing codes of conduct. Little scholarly attention has been paid to the guidelines so far.
NEWTOWN SQUARE, Penn. (July 12, 2016): A new USDA Forest Service report documenting an unprecedented effort to inventory birds in the western Great Lakes region and analyze changes in bird populations over the past quarter of a century found that across a trio of national forests, most birds are doing well in terms of both species diversity and population.
DURHAM, N.C. -- With the human population expected to climb from 7.4 billion to more than 11 billion people by 2100, some scientists hope that manipulating the plant microbiome could open up new ways to meet the growing demand for food.
But breeding more beneficial communities of microbes in and on crop plants may be easier in some plant tissues and growing conditions than others, finds a study led by researchers at Duke University.
The results appear July 12 in Nature Communications.
Using folded DNA to precisely place glowing molecules within microscopic light resonators, researchers at Caltech have created one of the world's smallest reproductions of Vincent van Gogh's The Starry Night. The reproduction and the technique used to create it are described in a paper published in the advance online edition of the journal Nature on July 11.
London, 13 July 2016 - New peer-reviewed research published today shows that smokers who completely substitute conventional cigarettes with commercial e-cigarettes experience dramatic reductions in exposure to harmful chemicals that are thought to contribute to tobacco-related diseases, not that dissimilar to complete smoking cessation.
Washington, DC - July 11, 2016 - A team of Italian investigators has discovered a new variant of an emerging antibiotic resistance mechanism. The new variant, dubbed mcr-1.2, confers resistance to colistin, a last-resort antibiotic against multidrug-resistant Gram-negative pathogens. The research is published July 11, in Antimicrobial Agents and Chemotherapy, a journal of the American Society for Microbiology.
Some autoimmune diseases and persistent infections are characterized by high levels of antibodies in the blood. But what are the causes of this hypergammaglobulinemia? A team headed by INRS's Professor Simona Stäger has successfully identified the mechanisms triggering the phenomenon. For the first time ever, she has established a link between B-cell activation by a protein--type 1 interferon--and unusually high antibody levels.
CHARLOTTESVILLE, VA (JULY 12, 2016). Abusive head injury, sometimes referred to as shaken baby syndrome or non-accidental trauma (NAT), is the third leading cause of head injuries in small children in the US. For children under the age of 1 year, it is the cause of the majority of serious head injuries. Outcomes often result in severe, permanent disability and sometimes death.
Suicide prevention hotlines in California respond to callers in need and reduce caller distress, but could improve their services and reach more users by expanding digital offerings such as chat services and establishing better programs to monitor and improve the quality of their services, according to new studies from the RAND Corporation.
July 12, 2016, Porto, Portugal - A study by York University researcher Caroline Davis and her colleagues at the Centre for Addiction and Mental Health (CAMH) is the first to demonstrate that variants of the Oxytocin Receptor (OXTR) gene contribute to why some of us overeat or engage in episodes of binge eating. They investigated how the OXTR gene influences appetite, food preferences, food intake and personality risk traits associated with brain-reward mechanisms.