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Home Science & Environment Medical Research

Home and neighborhood environments impact sedentary behavior in teens globally

December 3, 2024
in Medical Research
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The World Health Organization recommends no more than two to three hours per day of sedentary time for youth. However, adolescents worldwide are spending an average of 8 to 10 hours per day engaging in sedentary activities such as watching television, using electronic devices, playing video games and riding in motorized vehicles, according to a multinational study published in the International Journal of Behavioral Nutrition and Physical Activity.

The most notable finding of the study, led by principal investigator James F. Sallis, Ph.D., distinguished professor at the Herbert Wertheim School of Public Health and Human Longevity Science at University of California San Diego, and colleagues from 14 countries, was that simply having a personal social media account was linked with higher total sedentary time in both males and females. Social media was also related to more self-reported screen time.

“Although there is great concern about negative effects of social media on youth mental health, this study documents a pathway for social media to harm physical health as well,” said Sallis, who is also a professorial fellow at the Australian Catholic University. “These findings are concerning, as excessive sedentary behavior has been linked to a range of health problems, including obesity, diabetes and mental health issues.”

Researchers analyzed accelerometer data from 3,982 adolescents aged 11 to 19 and survey measures of sedentary behavior from 6,302 participants in the International Physical Activity and the Environment Network (IPEN) Adolescent Study, which covered 15 geographically and culturally diverse countries across six continents.

The number of electronic devices within a home, how many adolescents had their own social media accounts, and neighborhood walkability were significantly different across countries.

For example, adolescents from India had an average of 1.2 electronic devices in the bedroom and 0.5 personal electronic devices, while the average number of such devices in Denmark was 4.2 and 2.3, respectively. In India and Bangladesh, fewer than 30% of adolescents reported having their own social media account, compared to higher socioeconomic status countries where it was over 90%.

Parents reporting on walkability identified Australia as having high access to parks, while Nigerian parents reported no access, and parents in Bangladesh and India reported poor access. Traffic was a concern among parents in Brazil, Malaysia, Bangladesh, India, and Israel, and concerns about crime were high in the first three countries.

Adolescents who reported less recreational screen time lived in walkable neighborhoods and had better perceptions of safety from traffic and crime than others. Girls who lived in neighborhoods designed to support physical activity were less likely to be sedentary.

Despite differences in culture, built environments and extent of sedentary time, patterns of association were generally similar across countries, said the study’s lead author Ranjit Mohan Anjana, M.D., Ph.D., of Dr. Mohan’s Diabetes Specialties Centre and Madras Diabetes Research Foundation in India.

“Together, parents, policymakers and technology companies can work together to reduce access to screens, limit social media engagement and promote more physical activity, thus helping adolescents develop healthier habits and reduce their risk of chronic diseases,” said Anjana.

The study’s findings have significant implications for public health policy and highlight the need for further research into the causes and consequences of sedentary behavior among teenagers.

Countries involved in the study were Australia, Bangladesh, Belgium, Brazil, China, Czechia, Denmark, India, Israel, Malaysia, Nigeria, Portugal, Spain and the United States.

More information:
Ranjit Mohan Anjana et al, Associations of perceived neighbourhood and home environments with sedentary behaviour among adolescents in 14 countries: the IPEN adolescent cross sectional observational study, International Journal of Behavioral Nutrition and Physical Activity (2024). DOI: 10.1186/s12966-024-01678-4

Provided by
University of California – San Diego


Citation:
Home and neighborhood environments impact sedentary behavior in teens globally (2024, December 3)
retrieved 3 December 2024
from https://medicalxpress.com/news/2024-12-home-neighborhood-environments-impact-sedentary.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.



teen on phone
Credit: Unsplash/CC0 Public Domain

The World Health Organization recommends no more than two to three hours per day of sedentary time for youth. However, adolescents worldwide are spending an average of 8 to 10 hours per day engaging in sedentary activities such as watching television, using electronic devices, playing video games and riding in motorized vehicles, according to a multinational study published in the International Journal of Behavioral Nutrition and Physical Activity.

The most notable finding of the study, led by principal investigator James F. Sallis, Ph.D., distinguished professor at the Herbert Wertheim School of Public Health and Human Longevity Science at University of California San Diego, and colleagues from 14 countries, was that simply having a personal social media account was linked with higher total sedentary time in both males and females. Social media was also related to more self-reported screen time.

“Although there is great concern about negative effects of social media on youth mental health, this study documents a pathway for social media to harm physical health as well,” said Sallis, who is also a professorial fellow at the Australian Catholic University. “These findings are concerning, as excessive sedentary behavior has been linked to a range of health problems, including obesity, diabetes and mental health issues.”

Researchers analyzed accelerometer data from 3,982 adolescents aged 11 to 19 and survey measures of sedentary behavior from 6,302 participants in the International Physical Activity and the Environment Network (IPEN) Adolescent Study, which covered 15 geographically and culturally diverse countries across six continents.

The number of electronic devices within a home, how many adolescents had their own social media accounts, and neighborhood walkability were significantly different across countries.

For example, adolescents from India had an average of 1.2 electronic devices in the bedroom and 0.5 personal electronic devices, while the average number of such devices in Denmark was 4.2 and 2.3, respectively. In India and Bangladesh, fewer than 30% of adolescents reported having their own social media account, compared to higher socioeconomic status countries where it was over 90%.

Parents reporting on walkability identified Australia as having high access to parks, while Nigerian parents reported no access, and parents in Bangladesh and India reported poor access. Traffic was a concern among parents in Brazil, Malaysia, Bangladesh, India, and Israel, and concerns about crime were high in the first three countries.

Adolescents who reported less recreational screen time lived in walkable neighborhoods and had better perceptions of safety from traffic and crime than others. Girls who lived in neighborhoods designed to support physical activity were less likely to be sedentary.

Despite differences in culture, built environments and extent of sedentary time, patterns of association were generally similar across countries, said the study’s lead author Ranjit Mohan Anjana, M.D., Ph.D., of Dr. Mohan’s Diabetes Specialties Centre and Madras Diabetes Research Foundation in India.

“Together, parents, policymakers and technology companies can work together to reduce access to screens, limit social media engagement and promote more physical activity, thus helping adolescents develop healthier habits and reduce their risk of chronic diseases,” said Anjana.

The study’s findings have significant implications for public health policy and highlight the need for further research into the causes and consequences of sedentary behavior among teenagers.

Countries involved in the study were Australia, Bangladesh, Belgium, Brazil, China, Czechia, Denmark, India, Israel, Malaysia, Nigeria, Portugal, Spain and the United States.

More information:
Ranjit Mohan Anjana et al, Associations of perceived neighbourhood and home environments with sedentary behaviour among adolescents in 14 countries: the IPEN adolescent cross sectional observational study, International Journal of Behavioral Nutrition and Physical Activity (2024). DOI: 10.1186/s12966-024-01678-4

Provided by
University of California – San Diego


Citation:
Home and neighborhood environments impact sedentary behavior in teens globally (2024, December 3)
retrieved 3 December 2024
from https://medicalxpress.com/news/2024-12-home-neighborhood-environments-impact-sedentary.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.


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