Routen, Ashley and Edwards, M.G. and Upton, Dominic and Peters, D.M. (2011) The Impact of School-Day Variation in Weight and Height on National Child Measurement Programme Body Mass Index-Determined Weight Category in Year 6 Children. Child: Care, Health and Development . ISSN 1365-2214
|PDF - Published Version |
Restricted to Repository staff only
Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1365-...
Background In England, the National Child Measurement Programme (NCMP) annually measures the weight and height of Year 6 school children (age 10–11 years). While measurement protocols are defined, the time of measurement within the school day is not. This study examined the impact of school-day variation in weight and height on NCMP body mass index (BMI)-determined weight category in Year 6 children. Methods Standing height and weight were measured in morning and afternoon sessions in 74 children, boys (n= 34; height: 141.16 ± 7.45 cm; weight: 36.48 ± 9.46 kg, BMI: 18.19 ± 3.98 kg/m2) and girls (n= 40; height: 144.58 ± 7.66 cm; weight: 42.25 ± 11.29 kg; BMI: 19.97 ± 3.98 kg/m2) aged 11 ± 0.3 years. Results In the whole sample, height decreased (Mean =−0.51 cm, 95% CI: −0.39 to −0.64 cm, P= 0.01), weight did not change (Mdn = 36.40 to 36.35, P= 0.09) and BMI increased (Mdn = 18.04 to 18.13, P= 0.01). In girls weight increased (Mdn = 41.40 to 41.60, P= 0.01). BMI percentile increased (Mdn = 57th to 59.5th centile, P= 0.01). One girl increased in BMI category from morning to afternoon according to the clinical cut-offs (≤2nd, >91st and >98th) and three girls increased BMI category according to the population monitoring cut-offs (≤2nd, ≥85th, ≥95th). Conclusions School-day variation in height (and in girls alone, weight) impact upon increased BMI and BMI percentile in afternoon versus morning measurements in Year 6 children. Although not reaching statistical significance, resultant variation in categorization at the individual level may lead to unwarranted follow-up procedures being initiated. Further research with larger samples is required to further explore the impact of daily variability in height and weight upon both clinical and population monitoring BMI-determined weight status categorization in the NCMP.
Early View (Articles online in advance of print)
|Uncontrolled Keywords:||anthropometry, diurnal variation, measurement reliability, obesity, overweight, children|
|Subjects:||R Medicine > RJ Pediatrics > RJ101 Child Health. Child health services|
|Divisions:||Academic Departments > Institute of Sport and Exercise Science|
Academic Departments > Institute of Health and Society
|Deposited By:||Laura Scurlock-Evans|
|Deposited On:||15 Mar 2011 10:33|
|Last Modified:||28 Sep 2012 06:00|
Repository Staff Only: item control page