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- Title
Sedentary patterns and cardiometabolic risk factors in Mexican children and adolescents: analysis of longitudinal data.
- Authors
Aljahdali, Abeer A.; Baylin, Ana; Ruiz‑Narvaez, Edward A.; Kim, Hyungjin Myra; Cantoral, Alejandra; Tellez‑Rojo, Martha M.; Banker, Margaret; Peterson, Karen E.
- Abstract
Background: Sedentary behavior is a modifable risk factor for cardiometabolic health; however, the assessment of total sedentary time may not capture youth’s highly active and interrupted activity patterns. This study examined the associations between sedentary activity patterns and cardiometabolic risk factors among Mexican youth, who have a disproportionate burden of metabolic diseases, using a repeated measure design out of a longitudinal data. Methods: 570 subjects in the Early Life Exposure in Mexico to ENvironmental Toxicants (ELEMENT) birth cohort, who were followed up to three-time points during adolescence, were included. Bout duration, and frequency and percentages of waking time spent in specifc intensities of activity, were quantifed using ActiGraph wGT3X-BT wrist accelerometers. Self-reported questionnaires were used to query the usual duration of diferent sedentary behaviors. Outcomes were fasting lipid profle, markers for glucose homeostasis, anthropometry, and blood pressure. Associations were modeled using linear mixed-efects models, and isotemporal substitution approach was additionally used to assess the efect of replacing objectively assessed sedentary activity with other activity intensities, adjusting for potential confounders. Results: Each hour of self-reported screen-based time was positively associated with diastolic blood pressure (mm Hg) [β=0.30, 95% confdence interval (95% CI)=0.10, 0.51], and an hour of other sedentary time was associated with log serum glucose (mg/dL) [β=0.01, 95% CI=0.004, 0.017]. Substitution models showed that replacing 5% of sedentary time with moderate to vigorous physical activity (MVPA) was associated with lower waist circumference (cm) [β=−1.35, 95% CI=−1.91, −0.79] and log serum triglycerides (mg/dL) [β=−0.11, 95% CI=−0.18, −0.03]. Substituting one uninterrupted sedentary bout with light activity was associated with lower insulin (μIU/mL) [β=−0.06, 95% CI=−0.10, −0.02]. Conclusions: Sedentary time was associated with cardiometabolic risk factors in Mexican youth in a context-specifc manner. Replacing sedentary time with higher intensities was associated with improvements in some cardiometabolic markers.
- Publication
International Journal of Behavioral Nutrition & Physical Activity, 2022, Vol 19, Issue 1, p1
- ISSN
1479-5868
- Publication type
Article
- DOI
10.1186/s12966-022-01375-0