Sex differences in changes in BMI and blood pressure in Chinese school-aged children during the COVID-19 quarantine

June 5, 2021

Na Qiu, Hongmei He, Ling Qiao, Yong Ding, Shaoping Ji, Xiangqian Guo, Jiajia Luo, Zengyou Luo, Yuan Li, Huishen Pang, Yingsa Huang & Lu Zhang.

International Journal of Obesity

Qui et al. conducted a study to evaluate the impact of COVID-19 on children’s blood pressure and body mass index (BMI) during school closure following the emergence of COVID-19 in Wuhan, China. The cohort consisted of 935 randomly selected children in 5 primary schools between the age 7-12. Once schools reopened from the COVID-19 quarantine, students were followed up with using a baseline survey assessing demographic characteristics, risk factors, and diet, etc.; which resulted in 445 student responses. The results showed when comparing the baseline measurements pre-isolation to post isolation, there was an increase in median BMI, SBP, and DBP: 2 kg/m2, 7.9 mm Hg, and 57 mm Hg respectively. Additionally, this revealed that 70.5% of children were either overweight or obese during quarantine. There was no increase in the number of girls who were obese or overweight but showed there was in a significant increase in boys. When comparing both, BMI distribution was statistically significant after quarantine. Using a multivariate Cox regression model, the authors found that elevated blood pressure was correlated with family doting and the setting, while risk of obesity and overweight was correlated with the frequency of eating chili and setting, among others. The researchers emphasize the need for further studies to understand the association between chili peppers and children who are obese and overweight, an increase in lifestyle changes during quarantine, and improved parents’ concern control the spread of COVID-19 in school aged children.

Qiu, N., He, H., Qiao, L. et al. Sex differences in changes in BMI and blood pressure in Chinese school-aged children during the COVID-19 quarantine. Int J Obes 2021. https://doi.org/10.1038/s41366-021-00871-w

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