More than 2 hours of TV a day increases high blood pressure risk in children by 30 percent

February 25, 2015

A study on European children concludes that spending more than two hours a day in front of a screen increases the probability of high blood pressure by 30%. The article also points out that doing no daily physical activity or doing less than an hour a day increases this risk by 50%.

For years now scientific literature has associated watching the television with a sedentary lifestyle and obesity in young people. Now research led by the Universities of Zaragoza (Unizar) and São Paulo (Brazil) reveal the relationship between this habit and a greater risk of developing high blood pressure.

"The study shows the number of new high blood pressure cases and the connection between physical activity and different sedentary behaviours with the risk of high blood pressure in European children," explains Augusto César F. de Moraes, a Brazilian researcher who collaborates with the Unizar group and lead author of the article, to SINC.

The scientists based their conclusion on data from the study on 'Identification and Prevention of Dietary- and Lifestyle-induced Health Effects in Children and Infants' (IDEFICS), gathered over two years in 5,221 children from eight European countries (Spain, Germany, Hungary, Italy, Cyprus, Estonia, Sweden and Belgium), who were between 2 and 10 years old at the beginning of the study.

The results, published recently in the 'International Journal of Cardiology', show that the cumulative incidence of high blood pressure in this population during the two years analysed is high: 110 in 1,000. "High blood pressure can cause cardiovascular problems later in life," adds F. de Moraes. "For example, it increases the risk of ischemic heart disease".

The authors state that children who are sedentary for more than two hours a day, in front of the television, computers or videoconsoles, run a 30% greater risk of developing high blood pressure. "The figures are worrying, given that sedentary behaviours are common in infancy and subsequently, later in life".

Among the non-communicable diseases, high blood pressure has a high incidence in adults. Different studies have demonstrated that the levels of arterial pressure in infancy and adolescence have an enormous impact on developing high blood pressure as an adult.

More than one hour a day of exercise

To beat this condition, experts recommend that young people carry out physical activity for more than 60 minutes a day, and advise that sedentary activities last no longer than two hours a day.

Similarly, the researchers have observed that not doing an hour of physical activity a day increases the risk of high blood pressure by 50%. "Scientific evidence indicates that physical activity is a powerful vasodilator. Therefore, the rate of oxygenation of the heart increases, and at the same time, decreases arterial pressure," concludes F. de Moraes.
-end-
Reference:
Augusto César Ferreira de Moraes, Heráclito Barbosa Carvalho, Alfonso Siani, Gianvincezo Barba, Toomas Veidebaum, Michael Tornaritis, Denes Molnar, Wolfgang Ahrens, NormanWirsik, Stefaan De Henauw, Staffan Mårild, Lauren Lissner, Kenn Konstabel, Yannis Pitsiladis, Luis A. Moreno. "Incidence of high blood pressure in children --Effects of physical activity and sedentary behaviors: The IDEFICS study. High blood pressure, lifestyle and children". International Journal of Cardiology 180 (2015) 165-170

Contact:
Augusto César F. de Moraes
Facultad de Medicina de la Universidad de São Paulo
Facultad de Ciencias de la Salud de la Universidad de Zaragoza
Email: augustocesar.demoraes@usp.br

FECYT - Spanish Foundation for Science and Technology

Related Physical Activity Articles from Brightsurf:

Physical activity in the morning could be most beneficial against cancer
The time of day when we exercise could affect the risk of cancer due to circadian disruption, according to a new study with about 3,000 Spanish people  

Physical activity and sleep in adults with arthritis
A new study published in Arthritis Care & Research has examined patterns of 24-hour physical activity and sleep among patients with rheumatoid arthritis, lupus, and knee osteoarthritis.

Regular physical activity seems to enhance cognition in children who need it most
Researchers at the Universities of Tsukuba and Kobe re-analyzed data from three experiments that tested whether physical activity interventions lead to improved cognitive skills in children.

The benefits of physical activity for older adults
New findings published in the Scandinavian Journal of Medicine & Science in Sports reveal how physically active older adults benefit from reduced risks of early death, breast and prostate cancer, fractures, recurrent falls, functional limitations, cognitive decline, dementia, Alzheimer's disease, and depression.

Physical activity may protect against new episodes of depression
Increased levels of physical activity can significantly reduce the odds of depression, even among people who are genetically predisposed to the condition.

Is physical activity always good for the heart?
Physical activity is thought to be our greatest ally in the fight against cardiovascular disease.

Physical activity in lessons improves students' attainment
Students who take part in physical exercises like star jumps or running on the spot during school lessons do better in tests than peers who stick to sedentary learning, according to a UCL-led study.

Physical activity may attenuate menopause-associated atherogenic changes
Leisure-time physical activity is associated with a healthier blood lipid profile in menopausal women, but it doesn't seem to entirely offset the unfavorable lipid profile changes associated with the menopausal transition.

Are US adults meeting physical activity guidelines?
The proportion of US adults adhering to the 'Physical Activity Guidelines for Americans' from the US Department of Health and Human Services didn't significantly improve between 2007 and 2016 but time spent sitting increased.

Children from disadvantaged backgrounds do less vigorous physical activity
Children from disadvantaged backgrounds and certain ethnic minority backgrounds, including from Pakistani and Bangladeshi backgrounds, have lower levels of vigorous physical activity, according to researchers at the University of Cambridge.

Read More: Physical Activity News and Physical Activity Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.