Chao Li1, Bettina Beech2, Tessa Crume3, Ralph B D'Agostino2, Dana Dabelea3, Jill L Kaar3, Angela D Liese1, Elizabeth J Mayer-Davis4, Russell Pate1, David J Pettitt5, Craig Taplin6, Beatriz Rodriguez7,8, Anwar T Merchant1. 1. Department of Epidemiology and Biostatistics, University of South Carolina, Columbia, SC, USA. 2. School of Medicine, Wake Forest University, Winston-Salem, NC, USA. 3. Department of Epidemiology, University of Colorado, Denver, CO, USA. 4. Department of Nutrition, University of North Carolina, Chapel Hill, NC, USA. 5. Sansum Diabetes Research Institute, Santa Barbara, CA, USA. 6. Division of Endocrinology and Diabetes, Seattle Children's Hospital, University of Washington, Seattle, WA, USA. 7. John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI, USA. 8. Instituto Tecnologico de Monterrey, Monterrey, Mexico.
Abstract
BACKGROUND: The study provides evidence of the longitudinal association between screen time with hemoglobin A1c (HbA1c) and cardiovascular risk markers among youth with type 1 diabetes (T1D) and type 2 diabetes (T2D). OBJECTIVE: To examine the longitudinal relationship of screen time with HbA1c and serum lipids among youth with diabetes. SUBJECTS: Youth with T1D and T2D. METHODS: We followed up 1049 youth (≥10 yr old) with recently diagnosed T1D and T2D participating in the SEARCH for Diabetes in Youth Study. RESULTS: Increased television watching on weekdays and during the week over time was associated with larger increases in HbA1c among youth with T1D and T2D (p-value <0.05). Among youth with T1D, significant longitudinal associations were observed between television watching and TG (p-value <0.05) (week days and whole week), and low-density lipoprotein cholesterol (LDL-c, p-value <0.05) (whole week). For example, for youth who watched 1 h of television per weekday at the outset and 3 h per weekday 5 yr later, the longitudinal model predicted greater absolute increases in HbA1c (2.19% for T1D and 2.16% for T2D); whereas for youth who watched television 3 h per weekday at the outset and 1 h per weekday 5 yr later, the model predicted lesser absolute increases in HbA1c (2.08% for T1D and 1.06% for T2D). CONCLUSIONS: Youth with T2D who increased their television watching over time vs. those who decreased it had larger increases in HbA1c over 5 yr. Youth with T1D who increased their television watching over time had increases in LDL-c, TG, and to a lesser extent HbA1c.
BACKGROUND: The study provides evidence of the longitudinal association between screen time with hemoglobin A1c (HbA1c) and cardiovascular risk markers among youth with type 1 diabetes (T1D) and type 2 diabetes (T2D). OBJECTIVE: To examine the longitudinal relationship of screen time with HbA1c and serum lipids among youth with diabetes. SUBJECTS: Youth with T1D and T2D. METHODS: We followed up 1049 youth (≥10 yr old) with recently diagnosed T1D and T2D participating in the SEARCH for Diabetes in Youth Study. RESULTS: Increased television watching on weekdays and during the week over time was associated with larger increases in HbA1c among youth with T1D and T2D (p-value <0.05). Among youth with T1D, significant longitudinal associations were observed between television watching and TG (p-value <0.05) (week days and whole week), and low-density lipoprotein cholesterol (LDL-c, p-value <0.05) (whole week). For example, for youth who watched 1 h of television per weekday at the outset and 3 h per weekday 5 yr later, the longitudinal model predicted greater absolute increases in HbA1c (2.19% for T1D and 2.16% for T2D); whereas for youth who watched television 3 h per weekday at the outset and 1 h per weekday 5 yr later, the model predicted lesser absolute increases in HbA1c (2.08% for T1D and 1.06% for T2D). CONCLUSIONS: Youth with T2D who increased their television watching over time vs. those who decreased it had larger increases in HbA1c over 5 yr. Youth with T1D who increased their television watching over time had increases in LDL-c, TG, and to a lesser extent HbA1c.
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