Application of stable isotope dilution techniques to assess body fat and comparison with WHO BMI-for-age classification as a measure of obesity among schoolchildren in Nairobi, Kenya
Bibliographic Data
| ID | 15090653 |
|---|---|
| Authors | Dorcus Mbithe D Kigaru (Kenyatta University, corresponding author), Zipporah W Ndung’u, Zipporah W Ndungu (0000-0002-1780-9995, Jomo Kenyatta University of Agriculture and Technology), Catherine W Macharia-Mutie |
| Year | 2021 |
| Volume | 24 |
| Issue | 12 |
| Pages | 3587-3591 |
| Publication date | 2021-08-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Public Health Nutrition (JOURNAL) |
| Journal identifiers | ISSN: 1368-9800 • E-ISSN: 1475-2727 |
| Publisher | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.1017/s1368980020001950 |
| PMID | 32713402 |
| OpenAlex | W3045912912 |
| Language | EN |
| Citations received | 1 |
| References cited | 23 |
Objective: WHO BMI-for-age z score (BAZ) is widely used in epidemiology, yet it does not distinguish body fat-free mass and fat mass which are better indicators of obesity and related risks. The stable isotope dilution techniques (SIDT) are gold standard methods of assessing body composition. Main objective was to assess significant differences in measurement and validity of WHO BMI-for-age classification for defining childhood obesity by comparing with body fatness using SIDT among schoolchildren. Design: A cross-sectional analytical study. A questionnaire, anthropometry and body composition data were used. SPSS was used to analyse data at P Setting: Primary schools in Nairobi City County, Kenya Participants: One hundred seventy-nine schoolchildren aged 8–11 years were randomly sampled. Results: Prevalence of adiposity by reference SIDT (24·0 %) was significantly higher than that of obesity by BAZ > 2 sd (2·8 %) (Wilcoxon test, P 2 sd in diagnosing obesity was poor ( κ = 0·167). Only 11·6 % of children with excess body fat were correctly diagnosed as obese by BAZ > 2 sd . The use of BAZ > 1 sd for overweight and obesity showed fair concordance coefficient ( κ = 0·409, P Conclusion: WHO BMI-for-age cut-off points severely underestimate the prevalence of overweight and obesity compared with body composition assessment by stable isotope dilution techniques. Evidence-informed interventions should be based on more accurate estimates of overweight and obesity than that can be provided by BAZ
Anthropometry · Body mass index · Childhood obesity · Concordance · Isotope dilution · Obesity · Overweight · Birth, Development, and Health · Chemistry · Demography · Diet and metabolism studies · Medicine · Obesity, Physical Activity, Diet · Internal Medicine
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| Unique citing works | 1 |
|---|---|
| Citations per year | 0,2 |
| Citation span | 2021 - 2021 (1) |
| Citation velocity | historical |
| Highly cited | No |
| Citation types | Neutral: 1 |