Association between screen time, including that for smartphones, and overweight/obesity among children in Japan: NICE EVIDENCE Study 4
The association between screen time (ST), including that for smartphones, and overweight/obesity in children was examined separately for boys and girls, considering the influence of lifestyle factors. A cross-sectional study was conducted in 2,242 Japanese children (1,278 girls) aged 10–14 years. Ov...
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| Format: | Article |
| Language: | English |
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The Japan Endocrine Society
2024-02-01
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| Series: | Endocrine Journal |
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| Online Access: | https://www.jstage.jst.go.jp/article/endocrj/71/2/71_EJ23-0343/_html/-char/en |
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| _version_ | 1832591723807637504 |
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| author | Izumi Ikeda Kazuya Fujihara Sakiko Morikawa Yoshizawa Yasunaga Takeda Hajime Ishiguro Mayuko Yamada Harada Chika Horikawa Yasuhiro Matsubayashi Takaho Yamada Yohei Ogawa Hirohito Sone |
| author_facet | Izumi Ikeda Kazuya Fujihara Sakiko Morikawa Yoshizawa Yasunaga Takeda Hajime Ishiguro Mayuko Yamada Harada Chika Horikawa Yasuhiro Matsubayashi Takaho Yamada Yohei Ogawa Hirohito Sone |
| author_sort | Izumi Ikeda |
| collection | DOAJ |
| description | The association between screen time (ST), including that for smartphones, and overweight/obesity in children was examined separately for boys and girls, considering the influence of lifestyle factors. A cross-sectional study was conducted in 2,242 Japanese children (1,278 girls) aged 10–14 years. Overweight/obesity was defined by the International Obesity Task Force. Logistic regression analysis showed that only for girls, total ST (≥4 h), smartphone ST (≥3 h), and non-smartphone ST (≥2 h) were all independently and significantly associated with overweight/obesity compared to <2 h total ST, non-use of smartphones, and <1 h non-smartphone ST. Thus, smartphone ST ≥3 h and non-smartphone ST ≥2 h were additively associated with overweight/obesity in girls only. Girls having smartphone ST ≥3 h and non-smartphone ST ≥2 h were 6.79 times (95% CI: 3.11–14.81) more likely to have overweight/obesity than girls with less usage of both. In girls, when total ST was ≥4 < 5 h or smartphone ST was ≥2 h, the significant association with overweight/obesity disappeared when physical activity was ≥60 min/day and sleep time was ≥8.5 h. In addition, none of these associations was significant in boys. In Japanese girls, smartphone ST, non-smartphone ST, and total ST were all significantly associated with overweight/obesity. To avoid overweight/obesity, it is suggested to keep smartphone ST, non-smartphone ST, and total ST to <3 h, <2 h, and <4 h, respectively, and to engage in sufficient physical activity and sleep time. |
| format | Article |
| id | doaj-art-adaf271882b74f4c99ab6bdc222f7da0 |
| institution | Kabale University |
| issn | 1348-4540 |
| language | English |
| publishDate | 2024-02-01 |
| publisher | The Japan Endocrine Society |
| record_format | Article |
| series | Endocrine Journal |
| spelling | doaj-art-adaf271882b74f4c99ab6bdc222f7da02025-01-22T06:33:21ZengThe Japan Endocrine SocietyEndocrine Journal1348-45402024-02-0171217117910.1507/endocrj.EJ23-0343endocrjAssociation between screen time, including that for smartphones, and overweight/obesity among children in Japan: NICE EVIDENCE Study 4Izumi Ikeda0Kazuya Fujihara1Sakiko Morikawa Yoshizawa2Yasunaga Takeda3Hajime Ishiguro4Mayuko Yamada Harada5Chika Horikawa6Yasuhiro Matsubayashi7Takaho Yamada8Yohei Ogawa9Hirohito Sone10Department of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Niigata 951-8510, JapanDepartment of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Niigata 951-8510, JapanDepartment of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Niigata 951-8510, JapanDepartment of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Niigata 951-8510, JapanDepartment of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Niigata 951-8510, JapanDepartment of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Niigata 951-8510, JapanDepartment of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Niigata 951-8510, JapanDepartment of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Niigata 951-8510, JapanDepartment of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Niigata 951-8510, JapanDepartment of Pediatrics, Niigata University Medical and Dental Hospital, Niigata 951-8520, JapanDepartment of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Niigata 951-8510, JapanThe association between screen time (ST), including that for smartphones, and overweight/obesity in children was examined separately for boys and girls, considering the influence of lifestyle factors. A cross-sectional study was conducted in 2,242 Japanese children (1,278 girls) aged 10–14 years. Overweight/obesity was defined by the International Obesity Task Force. Logistic regression analysis showed that only for girls, total ST (≥4 h), smartphone ST (≥3 h), and non-smartphone ST (≥2 h) were all independently and significantly associated with overweight/obesity compared to <2 h total ST, non-use of smartphones, and <1 h non-smartphone ST. Thus, smartphone ST ≥3 h and non-smartphone ST ≥2 h were additively associated with overweight/obesity in girls only. Girls having smartphone ST ≥3 h and non-smartphone ST ≥2 h were 6.79 times (95% CI: 3.11–14.81) more likely to have overweight/obesity than girls with less usage of both. In girls, when total ST was ≥4 < 5 h or smartphone ST was ≥2 h, the significant association with overweight/obesity disappeared when physical activity was ≥60 min/day and sleep time was ≥8.5 h. In addition, none of these associations was significant in boys. In Japanese girls, smartphone ST, non-smartphone ST, and total ST were all significantly associated with overweight/obesity. To avoid overweight/obesity, it is suggested to keep smartphone ST, non-smartphone ST, and total ST to <3 h, <2 h, and <4 h, respectively, and to engage in sufficient physical activity and sleep time.https://www.jstage.jst.go.jp/article/endocrj/71/2/71_EJ23-0343/_html/-char/enpediatric obesityscreen timephysical activitysleep timesmartphone use |
| spellingShingle | Izumi Ikeda Kazuya Fujihara Sakiko Morikawa Yoshizawa Yasunaga Takeda Hajime Ishiguro Mayuko Yamada Harada Chika Horikawa Yasuhiro Matsubayashi Takaho Yamada Yohei Ogawa Hirohito Sone Association between screen time, including that for smartphones, and overweight/obesity among children in Japan: NICE EVIDENCE Study 4 Endocrine Journal pediatric obesity screen time physical activity sleep time smartphone use |
| title | Association between screen time, including that for smartphones, and overweight/obesity among children in Japan: NICE EVIDENCE Study 4 |
| title_full | Association between screen time, including that for smartphones, and overweight/obesity among children in Japan: NICE EVIDENCE Study 4 |
| title_fullStr | Association between screen time, including that for smartphones, and overweight/obesity among children in Japan: NICE EVIDENCE Study 4 |
| title_full_unstemmed | Association between screen time, including that for smartphones, and overweight/obesity among children in Japan: NICE EVIDENCE Study 4 |
| title_short | Association between screen time, including that for smartphones, and overweight/obesity among children in Japan: NICE EVIDENCE Study 4 |
| title_sort | association between screen time including that for smartphones and overweight obesity among children in japan nice evidence study 4 |
| topic | pediatric obesity screen time physical activity sleep time smartphone use |
| url | https://www.jstage.jst.go.jp/article/endocrj/71/2/71_EJ23-0343/_html/-char/en |
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