Nursing and Physiotherapy, Universidad de León-Campus de Ponferrada, Ponferrada, Castilla y León, Spain.
Electric, Systems and Automatics Engineering, Universidad de Leon, Leon, Spain
BMJ Open. 2021 Mar 10;11(3):e042773. doi: 10.1136/bmjopen-2020-042773.
To analyse the physical activity carried out by the adolescents in the study, its relationship to being overweight (overweight+obese) and to analyse the structure of the social network of friendship established in adolescents doing group sports, using different parameters indicative of centrality.
It was carried out in an educational environment, in 11 classrooms belonging to 5 Schools in Ponferrada (Spain).
235 adolescents were included in the study (49.4% female), who were classified as normal weight or overweight.
Physical Activity Questionnaire for Adolescents (PAQ-A) was used to study the level of physical activity. A social network analysis was carried out to analyse structural variables of centrality in different degrees of contact.
30.2% of the participants in our study were overweight. Relative to female participants in this study, males obtained significantly higher scores in the PAQ-A (OR: 2.11; 95% CI: 1.04 to 4.25; p value: 0.036) and were more likely to participate in group sport (OR: 4.59; 95% CI: 2.28 to 9.22; p value: 0.000). We found no significant relationship between physical activity and the weight status in the total sample, but among female participants, those with overweight status had higher odds of reporting high levels of physical exercise (OR: 4.50; 95% CI: 1.21 to 16.74; p value: 0.025). In terms of centrality, differentiating by gender, women who participated in group sports were more likely to be classified as having low values of centrality, while the opposite effect occurred for men, more likely to be classified as having high values of centrality.
Our findings, with limitations, underline the importance of two fundamental aspects to be taken into account in the design of future strategies: gender and the centrality within the social network depending on the intensity of contact they have with their peers.
分析研究中青少年进行的身体活动，及其与超重（超重+肥胖）的关系，并使用不同的中心度参数分析参与团体运动的青少年友谊社交网络的结构。
在一个教育环境中，在蓬费拉达（西班牙）的 5 所学校的 11 间教室中进行。
共有 235 名青少年参与了研究（49.4%为女性），他们被分为正常体重或超重。
使用青少年体力活动问卷（PAQ-A）来研究身体活动水平。进行社会网络分析，以分析不同接触程度的中心度结构变量。
在本研究中，30.2%的参与者超重。与本研究中的女性参与者相比，男性在 PAQ-A 中获得的得分显著更高（OR：2.11；95%CI：1.04 至 4.25；p 值：0.036），更有可能参加团体运动（OR：4.59；95%CI：2.28 至 9.22；p 值：0.000）。我们在整个样本中没有发现身体活动与体重状况之间的显著关系，但在女性参与者中，超重状态的参与者报告高水平身体活动的可能性更高（OR：4.50；95%CI：1.21 至 16.74；p 值：0.025）。就中心度而言，按性别区分，参加团体运动的女性更有可能被归类为具有低中心度值，而男性则相反，更有可能被归类为具有高中心度值。
我们的研究结果存在一定的局限性，但强调了在设计未来策略时需要考虑两个基本方面：性别和社交网络中的中心度，这取决于他们与同伴的接触强度。
