No differences in the body fat after violating core bioelectrical impedance measurement assumptions.
BMC Public Health
; 21(1): 495, 2021 03 12.
Article
em En
| MEDLINE
| ID: mdl-33711977
ABSTRACT
OBJECTIVE:
It is unclear to what degree acutely violating bioelectrical impedance analysis (BIA) measurement assumptions will alter the predicted percent fat mass (%FM) and whether this differs by sex or body mass index (BMI).METHODS:
%FM was assessed under control, dehydration, exercise, water, food intake and non-voided bladder conditions with three BIA devices (Tanita BC-418, TBF-314, & Omron HBF-306CN) for men (n = 23, age 24.0 ± 5.2 years old) and women (n = 17, age 22.5 ± 3.4 years old) separately.RESULTS:
For all BIA devices, there were no differences in the %FM values between the control and the other conditions in men or women (- 1.9 to 0.4%, p > 0.05). Across the three devices and five conditions, 97% of %FM tests returned values within 5% of control (2 tests), and 86% of tests were within 2% of control despite violating an assumption. The errors were greatest with dehydration and women were more likely to have a %FM difference greater than 2% than men with dehydration using the hand-to-foot device (Tanita TBF-314 59% versus 9%). There were no differences in %FM between control and the conditions when examined by BMI (overweight/obesity - 2.8 to 0.1% and normal weight - 1.7 to 0.5%; BMI*trial, p = 0.99).CONCLUSION:
%FM estimates were similar despite acutely violating the preliminary measurement BIA assumptions across a range of different BMIs. The minor variations in %FM are smaller than what would be expected with day-to-day variability or weight loss intervention but may be larger in women than men.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Composição Corporal
/
Tecido Adiposo
Limite:
Adolescent
/
Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
BMC Public Health
Assunto da revista:
SAUDE PUBLICA
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Canadá