While promoting physical activity and encouraging people to limit the time they spend watching television are important throughout life, those efforts are critical before adolescence, a new University of North Carolina at Chapel Hill investigation concludes.
That’s because the physical activity picture worsens rather than improves as teens make the transition into young adulthood, UNC researchers found in the largest national study of changes in exercise patterns over time.
Especially needed are efforts to get Hispanic and black girls to become more active, those scientists say. "In a sample originally representing more than 20 million school-aged youth, we found that only 36 percent achieved five or more sessions of moderate to vigorous physical activity weekly," said Dr. Penny Gordon-Larsen, assistant professor of nutrition at the UNC schools of public health and medicine. "However, of those 36 percent, only a staggering 4.4 percent maintained this level of activity into adulthood.
"By the time individuals reach adolescence, most are already not engaging in enough physical activity and spend too much time sitting in front of video screens of one kind or another to meet national recommendations," Gordon-Larsen said. "Thus, interventions must begin before adolescence, and this is particularly true for Hispanic and black girls."
The National Institutes of Health supported the research. The National Institute of Child Health and Human Development supported the Add Health study with cooperative funding from 17 other agencies.
David Williamson | EurekAlert!
Smart Data Transformation – Surfing the Big Wave
02.12.2016 | Fraunhofer-Institut für Angewandte Informationstechnik FIT
Climate change could outpace EPA Lake Champlain protections
18.11.2016 | University of Vermont
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
08.12.2016 | Life Sciences
08.12.2016 | Physics and Astronomy
08.12.2016 | Materials Sciences