E Barbour-Tuck1, M C Erlandson1, W Johnson2, N Muhajarine3, H Foulds1, A D G Baxter-Jones1. 1. a College of Kinesiology , University of Saskatchewan , Saskatoon , SK , Canada. 2. b School of Sport, Exercise and Health Sciences , Loughborough University , Loughborough , UK. 3. c Department of Community Health and Epidemiology , University of Saskatchewan , Saskatoon , SK , Canada.
Abstract
BACKGROUND: The prevalence of overweight and obesity doubles between adolescence and young adulthood; however, the exact age, and appropriate metric to use to identify when overweight develops is still debated. AIM: To examine the age of onset of overweight by sex and four metrics: body mass index (BMI), fat mass (%FM), waist circumference (WC) and waist-to-height ratio (WHtR). SUBJECTS AND METHODS: Between 1991 and 2017, serial measures of body composition were taken on 237 (108 males) individuals (aged 8-40 years of age). Hierarchical random effects models were used to develop growth curves. Curves were compared to BMI, %FM and WC overweight age- and sex-specific cut-points. RESULTS: In males, the BMI growth curve crossed the cut-point at 22.0 years, compared to 23.5 and 26.5 years for WHtR and %FM, respectively; WC cut-off was not reached until 36 years. In females, the BMI growth curve crossed the overweight cut-point at 21.5 years, compared to 14.2 years for %FM and 21.9 and 27.5 years for WC and WHtR, respectively. CONCLUSION: In summary, overweight onset occurs during young adulthood with the exception of WC in males. BMI in males and %FM in females were the metrics identifying overweight the earliest.
BACKGROUND: The prevalence of overweight and obesity doubles between adolescence and young adulthood; however, the exact age, and appropriate metric to use to identify when overweight develops is still debated. AIM: To examine the age of onset of overweight by sex and four metrics: body mass index (BMI), fat mass (%FM), waist circumference (WC) and waist-to-height ratio (WHtR). SUBJECTS AND METHODS: Between 1991 and 2017, serial measures of body composition were taken on 237 (108 males) individuals (aged 8-40 years of age). Hierarchical random effects models were used to develop growth curves. Curves were compared to BMI, %FM and WC overweight age- and sex-specific cut-points. RESULTS: In males, the BMI growth curve crossed the cut-point at 22.0 years, compared to 23.5 and 26.5 years for WHtR and %FM, respectively; WC cut-off was not reached until 36 years. In females, the BMI growth curve crossed the overweight cut-point at 21.5 years, compared to 14.2 years for %FM and 21.9 and 27.5 years for WC and WHtR, respectively. CONCLUSION: In summary, overweight onset occurs during young adulthood with the exception of WC in males. BMI in males and %FM in females were the metrics identifying overweight the earliest.
Entities:
Keywords:
Longitudinal; body mass index; growth; overweight; waist circumference
Authors: Shai Olansky; Kayleigh M Beaudry; Stacey Woods; Erin Barbour-Tuck; Kimberley L Gammage; Panagiota Klentrou; Andrea R Josse Journal: Int J Environ Res Public Health Date: 2021-04-10 Impact factor: 3.390
Authors: Asborg A Bjertnaes; Jacob H Grundt; Petur B Juliusson; Trond J Markestad; Tor A Strand; Mads N Holten-Andersen Journal: BMC Pediatr Date: 2019-11-12 Impact factor: 2.125