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One study found that watching television exposed children at greater risk of obesity compared to other leisure activities.
Whether the child is playing video games, eating or using a computer has more impact on his weight than the duration of his session, he said.
The researchers said that it was urgent to change the behaviors of inactive or overweight children before it was too late.
In the UK, up to one in five children who start going to school is obese or obese and one in five aged 6 to 19 is obese in the United States.
In Australia, the numbers are more striking: almost a quarter of children aged 5 to 17 are considered overweight or obese.
One study found that watching television exposed children at greater risk of obesity compared to other activities such as video games, such as video games.
The study conducted at the University of South Australia badessed the sedentary behaviors of 234 Australian children aged 10 to 13 who were either a healthy weight (74 boys, 56 girls) or were obese (56 boys, 48 girls).
He studied the impact of different behaviors while sitting: watching TV, playing video games, playing the computer, sitting down to eat or traveling in a car.
It turns out that children spent more than 50% of the day sitting without sleeping, with television dominating their reading time for two to three hours a day.
They discovered that watching television was more badociated with obesity in boys and girls than any other type of session.
And boys tend to be bigger than girls and spend more time in front of their screens.
"It's not surprising that the more a child is idle, the more likely he is to be overweight," said Dr. Margarita Tsiros, principal investigator.
"But not all sedentary behaviors are created equal with respect to the weight of children. This research suggests that the length of time children sit may be less than what they do when they sit.
"For example, some types of sitting are more strongly badociated with body fat in children than others, and the time spent watching TV seems to be the worst culprit."
While this is the case for both bades, the study also revealed differences in seated behaviors of boys and girls.
Kids with a TV in their rooms are more likely to be obese
Research has revealed that girls as young as four years old are more likely to be obese if they have a television in their bedroom.
Portuguese scientists have badyzed the lifestyles and habits of 120 girls aged 4 to 6 by interviewing their parents.
They found that girls with TVs in their room were three times more likely to be overweight than their non-luxury peers.
And the risk of obesity was four times higher, according to the study.
Nearly two-thirds of parents surveyed confessed that their children had a television in their bedroom before the age of six.
In boys only, prolonged episodes of sedentary behavior and time spent playing video games or the computer were positively related to obesity.
"Not only did boys watch TV more than girls – 37 minutes more per day – but they also spent a lot more time playing video games," said Dr. Tsiros.
"Video games and computer use are very popular, but our data suggests that these activities may be related to increased body fat in boys.
"Boys who sit for more than 30 minutes may also have higher body fat, so it's important to monitor their screen and sitting time and make sure they're taking regular breaks. "
One of the key findings is that girls who adopt more unsupervised sedentary behaviors may be less obese.
Although there is no direct link between television time and obesity, this strong badociation has highlighted the importance of preparing children to adopt healthy lifestyle habits from an early age. .
Dr. Tsiros said, "An overweight child is more likely to become an overweight adult, so it is essential to fight unhealthy behaviors in childhood.
"Obese children have an increased risk of developing serious health problems, including type 2 diabetes, high blood pressure and cholesterol.
"They may also experience problems with well-being, social problems and self-esteem, as well as pain and difficulty with movement and activity.
"By understanding children's sedentary behaviors, especially those that put them at risk, we will ensure that they stay on the best path to achieving a healthy weight.
This comes after research was conducted last week and revealed that sitting in front of the television for at least an hour a day can increase the risk of bowel cancer in young people.
Those who watched television two or more hours a day had an increased risk of almost 70%, according to the study conducted by Dr. Long Nguyen of Mbadachusetts General Hospital and Harvard Medical School.
According to the most recent figures for 2015, 23% of boys and 20% of girls in the United Kingdom respect the recommendations concerning the activity levels of children in the United Kingdom.
WHAT ARE UK CHILDREN?
English children are bigger than ever – official data revealed in October that one in 25 years, aged 10 to 11 years, was seriously obese, the largest category possible.
And of about 556,000 British children of primary school age, 170,000 are overweight to some extent, according to figures released in May.
More than one in five children aged 11 is obese, which equates to about 111,000 children. He is so fat that he is more likely to develop type 2 diabetes, heart disease, cancer or stroke.
The Royal College of Pediatrics and Child Health says that children should be weighed every year at school because "the danger is on the horizon" and that the UK is late compared to the rest of the EU in the fight against obesity.
The experts also warned children to gain weight "at a breakneck pace" when they are in school.
Sugar in food is known to contribute to the swelling of children's waistlines, with huge amounts of popular foods filled with sugar.
A tax on sugar has reduced the effects of some non-alcoholic beverages, but breakfast cereals can still hold more than 70% of the sugar of a whole day in a single bowl.
Even a single can of Coca Cola (35 g of sugar) or a March bar (33 g) contains more than the maximum amount of sugar that a child should have on an entire day.
"If we do not solve this crisis of obesity, today's obese children will become tomorrow's obese adults whose healthy life years will be shortened by a whole series of health problems." health, "said Izzi Seccombe of the Local Government Association in May.
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