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Accuracy of quantitative magnetic resonance and eight-electrode bioelectrical impedance analysis in normal weight and obese women.

https://arctichealth.org/en/permalink/ahliterature258595
Source
Clin Nutr. 2014 Jun;33(3):471-7
Publication Type
Article
Date
Jun-2014
Author
Marja Bosaeus
Therese Karlsson
Agneta Holmäng
Lars Ellegård
Source
Clin Nutr. 2014 Jun;33(3):471-7
Date
Jun-2014
Language
English
Publication Type
Article
Keywords
Adult
Body Composition
Body mass index
Body Weight
Cross-Sectional Studies
Electric Impedance
Electrodes
Female
Humans
Magnetic Resonance Spectroscopy - methods
Middle Aged
Obesity - diagnosis
Plethysmography - methods
Reproducibility of Results
Sweden
Young Adult
Abstract
Quantitative magnetic resonance (QMR) has previously been shown to both overestimate and underestimate average fat mass (FM) in humans. Eight-electrode bioelectrical impedance analysis (BIA) has previously been found biased as well as successfully validated. We report cross-sectional accuracy of QMR and eight-electrode BIA evaluated with air displacement plethysmography (ADP) as reference method.
Fat mass and fat free mass (FFM) by QMR and eight-electrode BIA were evaluated against ADP as reference in 38 normal weight and 30 obese women. Total body water estimates by QMR and eight-electrode BIA were compared.
Fat mass was overestimated by QMR (1 ± 2 kg, p
PubMed ID
23871192 View in PubMed
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Body Composition During Pregnancy: Longitudinal Changes and Method Comparisons.

https://arctichealth.org/en/permalink/ahliterature307140
Source
Reprod Sci. 2020 07; 27(7):1477-1489
Publication Type
Comparative Study
Journal Article
Research Support, Non-U.S. Gov't
Date
07-2020
Author
Marja Bosaeus
Ulrika Andersson-Hall
Louise Andersson
Therese Karlsson
Lars Ellegård
Agneta Holmäng
Author Affiliation
Department of Physiology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Box 432, SE-405 30, Gothenburg, Sweden.
Source
Reprod Sci. 2020 07; 27(7):1477-1489
Date
07-2020
Language
English
Publication Type
Comparative Study
Journal Article
Research Support, Non-U.S. Gov't
Keywords
Absorptiometry, Photon - methods
Adipose Tissue - physiology
Adult
Body Composition - physiology
Body mass index
Cross-Sectional Studies
Electric Impedance
Female
Follow-Up Studies
Humans
Longitudinal Studies
Middle Aged
Nutritional Status - physiology
Obesity - diagnosis - epidemiology - physiopathology
Pregnancy - physiology
Sweden - epidemiology
Young Adult
Abstract
The Pregnancy Obesity Nutrition and Child Health study is a longitudinal study of reproductive health. Here we analyzed body composition of normal-weight and obese Swedish women by three methods during each trimester of pregnancy. Cross-sectional and longitudinal fat mass estimates using quantitative magnetic resonance (QMR) and bioelectrical impedance analysis (BIA) (Tanita MC-180MA-III) were compared with fat mass determined by air displacement plethysmography (ADP) in pregnancy weeks 8-12, 24-26, and 35-37 in normal-weight women (n =?122, BMI?=?22.1?±?1.6 kg/m2) and obese women (n =?29, BMI?=?34.6?±?3.6 kg/m2). ADP results were calculated from pregnancy-adjusted fat-free mass densities. Mean fat mass by QMR and ADP were similar in obese women, although with wide limits of agreement. In normal-weight women, QMR overestimated mean fat mass in all trimesters, with systematic overestimation at low fat mass values in trimesters 1 and 3. In obese women, fat mass by BIA was grossly underestimated and imprecise in all trimesters, especially at higher values in trimester 2. In normal-weight women, fat mass by BIA was moderately lower than by ADP in trimester 1, similar in trimester 2, and moderately higher in trimester 3. QMR and ADP assessed fat mass changes similarly in obese women, whereas BIA overestimated fat mass changes in normal-weight women. Mean fat mass and fat mass changes by QMR and pregnancy-adjusted ADP were similar in pregnant obese women. Mean fat mass by QMR and fat mass changes by BIA were higher than corresponding values determined by pregnancy-adjusted ADP in normal-weight women.
PubMed ID
31993997 View in PubMed
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Lower vitamin D status in obese compared with normal-weight women despite higher vitamin D intake in early pregnancy.

https://arctichealth.org/en/permalink/ahliterature273638
Source
Clin Nutr. 2015 Oct;34(5):892-8
Publication Type
Article
Date
Oct-2015
Author
Therese Karlsson
Louise Andersson
Aysha Hussain
Marja Bosaeus
Nina Jansson
Amra Osmancevic
Lena Hulthén
Agneta Holmäng
Ingrid Larsson
Source
Clin Nutr. 2015 Oct;34(5):892-8
Date
Oct-2015
Language
English
Publication Type
Article
Keywords
Body Composition
Body mass index
Diet
Dietary Supplements
Energy intake
Female
Humans
Maternal Nutritional Physiological Phenomena
Obesity - blood
Pregnancy
Seasons
Sunlight
Sweden
Vitamin D - administration & dosage - blood
Abstract
Obesity is associated with lower vitamin D concentrations than normal-weight. Pregnancy may affect vitamin D status, especially in obese subjects.
The purpose of this study was to compare vitamin D status and intake between obese and normal-weight women during pregnancy.
Twenty-five obese and 80 normal-weight women were recruited in the Western Sweden region (latitude 57°N). Blood samples and information on diet and sun exposure were collected in each trimester during pregnancy.
During summer months, 12% of normal-weight and 50% of obese women in the first trimester had serum 25(OH)D concentrations
PubMed ID
25307530 View in PubMed
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