Apr

17

Category: Psychology | Date : April 17, 2014

Is there an age when the brain is at the top of his performance? It is seeking to answer this question that Canadian researchers have identify the precise age from which our cognitive performance began to decline : 24 years.

Fortunately, all is not lost past this age they have also demonstrated that our brain can compensate for this “decline” by implementing new coping strategies.

Better learn to play chess or bridge before 24 years if we are to believe the findings of the Canadian study, one of the first to forward a specific age related cognitive decline.

His findings, published in the journal PLOS One, indicate that this age, our cognitive performance are their maximum.

To demonstrate this, a team of researchers from the University Canadian Simon Fraiser was based on data from 3,305 followers StarCraft 2, aged 16 to 44.

The video game War in real time requires a large capacity concentration, skill, speed and strategy.

The scientists analyzed their performance, strategic moves and the reaction time of each player.

It has been found that after 24 years, cognitive speed slows, as the difference in response to movements of his opponents, leading to lower performance.

Between a player ” Bronze ” 39 years and another 24 years, the difference in game speed can reach a total of 30 seconds on a part that lasts 15 minutes, a significant difference.

If the older players are slower, they are those who deploy various tricks to compensate for this decline in cognitive speed, note the authors of this study.

Performance is thus the result of the constant interaction between climate change and adaptation by the brain to be more efficient, yet emphasize the scientific.

The decline is all relative and nuance.

Apr

16

Category: Health | Date : April 16, 2014

Weight gain ” Ideal ” during pregnancy depends on the initial weight women : it is thus 5 9 kg for a body mass index greater than 30, 7 11 kg for a BMI between 25 and 29, 11 to 16 kg if BMI is between 18.5 and 25 and finally 13 18 kg if BMI is less than 18.5 kg.

Through an extensive survey conducted in Northern California, the researchers analyzed data from 4,145 women who gave birth between 2007 and 2009, and followed the medical records of children between the ages of 2 and 5 years.

Their findings, published in the American Journal of Obstetrics and Gynecology, shows that 20.4 % of children whose mothers had taken more than the recommended weight during pregnancy are obese or overweight.

Nearly 19.5 % of those born to mothers who took little or not enough weight suffered from similar disorders.

This figure rose to 14.5% for women whose weight gain was “Normal” or similar to the recommendations made.

Researchers have noted that women whose BMI was normal before pregnancy but who took more than the recommended weight had an increased risk of 80% to the world a child who would later become obese or overweight.

” This association is independent of genetic factors,” recounts Dr. Monique M.

Hedderson, co- author of the study.

” Taking too much or too little weight can affect long term ” the mechanisms that control the regulation of energy balance and metabolism, such as appetite and energy expenditure, Sneha says Sridhar, lead author of this study.

Do everything possible to stay slim during pregnancy is not necessarily a good idea, no better than eating for two!

Maternal gestational weight gain and offspring risk for childhood overweight or obesity.