Recreational Screen-Time Among Chinese Adolescents: A Cross-Sectional Study

Jiang, Xiaoxiao; Hardy, Louise L.; Ding, Ding; Baur, Louise A.; Shi, Huijing

doi:10.2188/jea.je20140006

Cited by 50 publications

(46 citation statements)

References 20 publications

(25 reference statements)

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“…A recent study reported that 26.1% of adolescents were exposed to screen time for ≥2 h/day in China [ 31 ]. TV viewing and playing on the computer were found to be the most prevalent screen time behaviors among Chinese adolescents [ 32 ]. In our current study, approximately 42.9% of the students reported screen time for ≥2 h/day.…”

Section: Discussionmentioning

confidence: 99%

Study on Current Levels of Physical Activity and Sedentary Behavior among Middle School Students in Beijing, China

Duan

Wang

et al. 2015

PLoS ONE

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IntroductionThis study aimed to determine current levels of physical activity and sedentary behavior in middle school students on the basis of grade, sex, student attitudes toward physical education, and residence location.MethodsIn 2013, a cross-sectional study of 1793 students aged 12 to 15 years was conducted across eight middle schools in Beijing, China. Four schools were selected from an urban district and another four schools were from a suburban district. Physical activity and sedentary behavior data were collected using the commonly used school-based Chinese version of the China Health and Nutrition Survey.ResultsThe mean age of sampled students was 13.3±1.0 years; 51.5% were boys. Approximately 76.6% of students reported having three 45-minute physical education classes every week. A total of 35.6% students spent ≥1 h/day performing moderate to vigorous physical activity (MVPA) during school, and 34.9% spent ≥1 h/day in MVPA outside school time. Approximately half (49.7%) of the students engaged in reading, writing, or drawing for ≥2 h/day, and 42.9% reported screen time for ≥2 h/day. Although boys spent more time engaged in physical activity than girls did, they also spent more time exhibiting sedentary behavior. Each 10-unit increase in attitudes toward physical education was associated with an increased odds of 1.15 (95%CI: 1.09–1.20) for spending more than 1 h/day on MVPA. Students in suburban schools reported engaging in physical activity less when compared with those in urban schools.ConclusionThe majority of our students did not meet the current physical activity recommendations, and about half of the students spent excessive time engaging in sedentary behaviors. Findings from this study highlight a positive association between student attitudes toward physical education and physical activity. Studies are needed to further explore the role of student attitudes toward physical education in promoting physical activity among Chinese students.

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Section: Discussionmentioning

confidence: 99%

Study on Current Levels of Physical Activity and Sedentary Behavior among Middle School Students in Beijing, China

Duan

Wang

et al. 2015

PLoS ONE

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“…As today’s adolescents frequently use MP and other communication tools in their homes, community environments and at school [ 1 ], they have longer exposure time to MP. In 2014, the proportion of adolescents who own MP is more than 60% in Shanghai, China [ 2 ] and still increasing. Additionally, with the increasing use of MP, concerns have been raised in a number of countries about the adverse health effects of MP use on adolescents.…”

Section: Introductionmentioning

confidence: 99%

Association between mobile phone use and inattention in 7102 Chinese adolescents: a population-based cross-sectional study

Zheng

Gao

et al. 2014

BMC Public Health

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BackgroundThe dramatic growth of mobile phone (MP) use among young people has increased interest in its possible health hazards in this age group. The aim of this cross-sectional study was to investigate the association between MP use and inattention in adolescents.MethodsA total of 7720 middle school students were involved in this cross-sectional study. Inattention was assessed as defined for the Attention Deficit component of Attention deficit/Hyperactivity disorder (ADHD) by the Diagnostic and Statistical Manual of Mental Disorders (4th ed., text rev. [DSM-IV-TR]). The demographic characteristics and information on MP use were included in the questionnaire. Chi-square tests and logistic regression models were used to analyze the data.ResultsIn total, 7102 (91.99%) valid questionnaires were obtained. After adjusted for confounders, inattention in adolescents was significantly associated with MP ownership, the time spent on entertainment on MP per day, the position of the MP during the day and the mode of the MP at night. The strongest association between inattention and the time spent on the MP was among students who spent more than 60 minutes per day playing on their MP.ConclusionsOur study shows some associations between MP use and inattention in Chinese adolescents. Decreasing MP usage to less than 60 minutes per day may help adolescents to stay focused and centered.

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“…Currently, a need for exion and even hyper exion of the cervical segments have to increase, as many people use technological devices for recreation or/and work, especially smartphones for hours during the day. In 2014, the proportion of adolescents who used the smartphone was more than 60% in Shanghai, China, and this gure still keeps rising [25]. Therefore, considering the adverse health effects of the increasing prevalence of smartphones on young adults, the present risk analysis of FOC about such an exposure, could be a promising new parameter in predicting CS, which is of great signi cance to spine surgeons.…”

Section: Discussionmentioning

confidence: 99%

Flexion Dysfunction of Atlanto-occipital Joint as a Risk Factor for Cervical Spondylosis

Long¹,

Yi²,

Tan³

2020

Preprint

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BACKGROUND: There exist varied craniocervical flexion angles from the teenagers to the elderly. To our best knowledge, there is no prior study to examine the role of range of motion (ROM) of the atlanto-occipital joint in the pathogenesis of cervical spondylosis (CS). The purpose of this study was to investigate the association between atlanto-occipital radiographic alignment in flexion and CS.METHODS: 232 CS patients, including 45 patients who accepted surgical treatment, were retrospectively reviewed. The angle between McGregor’s line and C1 line (O-C1 angle) was evaluated on images taken in flexion (F-OC) and neutral positions (N-OC) independently. The relationship between the FOC (FOC=F-OC—N-OC) and Neck Disability Index (NDI) was examined, and the involvement of the FOC in the onset of CS was analyzed. Receiver operating characteristic (ROC) curve analysis was performed to determine the optimal cut-off for detecting an increased risk of CS.RESULTS: The FOC showed a significant correlation with NDI(P<0.05). The mean FOC was significantly lower in the CS groups than in the control group (P<0.001). Logistic regression analysis showed involvement of the FOC in the onset of CS, and the threshold value according to receiver operating characteristic curve analysis was 4.2 degree, with the odds ratio of 8.2 (95% CI:6.4–10.0; P<0.001). CONCLUSION: Stiff atlanto-occipital joint, represented by low FOC, is an independent risk factor in the incidence of CS compared with healthy individuals. This parameter can help spine surgeons to identify these people to implement appropriate preventive and management steps.

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Recreational Screen-Time Among Chinese Adolescents: A Cross-Sectional Study

Cited by 50 publications

References 20 publications

Study on Current Levels of Physical Activity and Sedentary Behavior among Middle School Students in Beijing, China

Study on Current Levels of Physical Activity and Sedentary Behavior among Middle School Students in Beijing, China

Association between mobile phone use and inattention in 7102 Chinese adolescents: a population-based cross-sectional study

Flexion Dysfunction of Atlanto-occipital Joint as a Risk Factor for Cervical Spondylosis

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