The results, published in the July issue of the journal Preventive Medicine, show that teenagers devote more time to sedentary behaviour (in front of a screen) at the weekend.
The study, which forms part of the European HELENA study, analysed the prevalence of sedentary behaviour in 3,278 adolescents (1,537 boys and 1,741 girls aged between 12.5 and 17.5) in 10 European cities (Athens and Heraklion in Greece, Dortmund in Germany, Ghent in Belgium, Lille in France, Pécs in Hungary, Rome in Italy, Stockholm in Sweden, Vienna in Austria, and Zaragoza in Spain).
The teenagers indicated the amount of time they spent in front of the television, computer and games consoles, the amount of time spent connected to the Internet and the amount of time spent studying (outside school hours). The researchers also studied the availability of computers, televisions and consoles at home and in teenagers' bedrooms, and their impact on whether they watched too much television (more than two hours per day).
"Our findings support the recommendation of the American Academy of Pediatrics not to put televisions in teenagers' bedrooms, in order to (theoretically) reduce the amount of time they spend watching the television", says Rey-López.
Computers in the bedroom, but not televisions
"Having a games console or television in the bedroom triples the risk of exceeding the health recommendations to not spend more than two hours per day watching television. However, having a computer in the bedroom reduces the risk of excessive television watching", the researcher from Aragon explains.
The authors also observed significant differences between the sexes in terms of the amount of time spent on sedentary pastimes. Adolescent girls are more sedentary in terms of the amount of time spent studying and surfing the net, while boys spend more time playing electronic games.
According to a study published last month in the Journal Medicine and Science in Sports and Exercise, there is a strong association in adults (dose-dependent) between the number of hours spent watching television and cardiometabolic health, making it highly recommendable not to watch television to excess during leisure time.
Juan P. Rey-López, Germán Vicente-Rodriguez, Francisco B. Ortega, Jonatan R. Ruiz, David Martinez-Gómez, Stefan De Henauw, Yannis Manios, Denes Molnar, Angela Polito, Maite Verloigne, Manuel J. Castillo, Michael Sjöström, Ilse De Bourdeaudhuij, Luis A. Moreno y en representación del grupo de estudio HELENA. "Comportamientos sedentarios en adolescentes europeos: estudio HELENA". Preventive Medicine 51:50 julio de 2010.
Wijndaele K, Healy GN, Dunstan DW, Barnett AG, Salmon J, Shaw JE, Zimmet PZ, Owen N. "Increased cardiometabolic risk is associated with increased TV viewing time". Medicine and Science in Sports and Exercise; 42(8):1511-8, agosto de 2010.
SINC | EurekAlert!
A sudden drop in outdoor temperature increases the risk of respiratory infections
11.01.2017 | University of Gothenburg
Urbanization to convert 300,000 km2 of prime croplands
27.12.2016 | Mercator Research Institute on Global Commons and Climate Change (MCC) gGmbH
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).
Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...
10.01.2017 | Event News
09.01.2017 | Event News
05.01.2017 | Event News
18.01.2017 | Materials Sciences
18.01.2017 | Information Technology
18.01.2017 | Ecology, The Environment and Conservation