-
Revista Portuguesa de Cardiologia :... May 2017
Topics: Anthropometry; Body Mass Index; Cross-Sectional Studies; Humans; Obesity
PubMed: 28495180
DOI: 10.1016/j.repc.2017.02.003 -
Computer Methods and Programs in... Jul 2020Conventional anthropometric studies using Kinect depth sensors have concentrated on estimating the distances between two points such as height. This paper deals with a...
BACKGROUND AND OBJECTIVE
Conventional anthropometric studies using Kinect depth sensors have concentrated on estimating the distances between two points such as height. This paper deals with a novel waist measurement method using SVM regression, further widening spectrum of Kinect's potential applications. Waist circumference is a key index for the diagnosis of abdominal obesity, which has been linked to metabolic syndromes and other related diseases. Yet, the existing measuring method, tape measure, requires a trained personnel and is therefore costly and time-consuming.
METHODS
A dataset was constructed by recording both 30 frames of Kinect depth image and careful tape measurement of 19 volunteers by a clinical investigator. This paper proposes a new SVM regressor-based approach for estimating waist circumference. A waist curve vector is extracted from a raw depth image using joint information provided by Kinect SDK. To avoid overfitting, a data augmentation technique is devised. The 30 frontal vectors and 30 backside vectors, each sampled for 1 s per person, are combined to form 900 waist curve vectors and a total of 17,100 samples were collected from 19 individuals. On an individual basis, we performed leave-one-out validation using the SVM regressor with the tape measurement-gold standard of waist circumference measurement-values labeled as ground-truth. On an individual basis, we performed leave-one-out validation using the SVM regressor with the tape measurement-gold standard of waist circumference measurement-values labeled as ground-truth.
RESULTS
The mean error of the SVM regressor was 4.62 cm, which was smaller than that of the geometric estimation method. Potential uses are discussed.
CONCLUSIONS
A possible method for measuring waist circumference using a depth sensor is demonstrated through experimentation. Methods for improving accuracy in the future are presented. Combined with other potential applications of Kinect in healthcare setting, the proposed method will pave the way for patient-centric approach of delivering care without laying burdens on patients.
Topics: Anthropometry; Body Mass Index; Female; Humans; Japan; Male; Obesity; Support Vector Machine; Waist Circumference
PubMed: 32126448
DOI: 10.1016/j.cmpb.2020.105418 -
Current Pediatric Reviews 2017To identify the anthropometric variables in equations/reference values of impulse oscillometry system (IOS) parameters in preschoolers, children and adolescents. (Review)
Review
BACKGROUND
To identify the anthropometric variables in equations/reference values of impulse oscillometry system (IOS) parameters in preschoolers, children and adolescents.
METHOD
Systematic search on the databases MEDLINE/Ovid, SCOPUS and SciELO using the key words "preschool, child and adolescent", "impulse oscillometry", "reference values" and its variations.
RESULTS
This review considered a total of 13 articles. The studies presented height, weight, sex and age as the variables correlated to oscillometric parameters. Most studies do not present the correlation values of analyzed variables, and only a few presented the results considering gender differences. The coefficients of determination of the equations were low, specially for the samples including preschoolers. Height was identified as the most influent predictive variable to IOS parameters in the studied age group.
CONCLUSION
Anthropometric variables, especially height, plays an important role determining reference values/equations for oscillometric parameters, however, the data acquisition method should be standardized.
Topics: Adolescent; Anthropometry; Child; Child, Preschool; Female; Humans; Male; Oscillometry; Reference Values
PubMed: 28637400
DOI: 10.2174/1573396313666170622075940 -
West African Journal of Medicine Nov 2023Although a positive correlation has been shown to exist between blood pressure (BP) and anthropometry, conflicting reports have been documented about the anthropometric...
INTRODUCTION
Although a positive correlation has been shown to exist between blood pressure (BP) and anthropometry, conflicting reports have been documented about the anthropometric parameter that best determines increased blood pressure (BP) in children. Whereas waist circumference (WC) has been shown to correlate with BP in adults due to disproportionate fat distribution, the uniform fat distribution in children may alter this relationship established in the adult population.
OBJECTIVE
Correlation between anthropometric parameters and BP in children.
METHODOLOGY
A cross-sectional study of BP where 1350 apparently healthy secondary school adolescents aged 10-19 years were recruited over 6 months. The BP, height, weight, body mass index (BMI) and WC were taken and analysed.
RESULTS
The mean weight of the students was 48.6±10.9kg with a range of 23-100kg, while height was 1.6±0.1m and ranged from 1.2-1.9m. The mean WC was 65.6±8.9cm and ranged from 22-100cm while the mean BMI was 18.9±3.1kg/m2. The overall mean systolic BP was 108.9±12.5mmHg with a range of 76-165mmHg while diastolic BP was 68.3±8.2mmHg and ranged from 47-95mmHg. The BP correlated positively with height with systolic blood pressure (SBP) and diastolic blood pressure coefficients being 0.44 and 0.34 (r=0.44 & 0.34; p<0.001), correlated with weight with SDB and DBP coefficients (r=0.51 & 0.38; p<0.001), correlated with BMI (r= 0.40 & 0.29; p<0.001) and with WC (r= 0.31 & 0.23; p<0.001).
CONCLUSION
SBP showed a stronger correlation with the anthropometries than the DBP in children. The weight has the highest correlation while the WC has the lowest correlation with BP in children.
Topics: Adolescent; Adult; Humans; Child; Blood Pressure; Cross-Sectional Studies; Anthropometry; Body Mass Index; Students
PubMed: 37970783
DOI: No ID Found -
Obesity (Silver Spring, Md.) Jun 2022Three-dimensional (3D) imaging systems are increasingly being used in health care settings for quantifying body size and shape. The potential exists to provide similar...
OBJECTIVE
Three-dimensional (3D) imaging systems are increasingly being used in health care settings for quantifying body size and shape. The potential exists to provide similar phenotyping capabilities outside of professional settings using smartphone applications (apps). The current study aim was to compare waist, hip, upper arm, and midthigh circumference measurements acquired by a free downloadable app (MeThreeSixty; Size Stream, Cary, North Carolina) and a conventional 20-camera 3D system (SS20; Size Stream) with those measured with a flexible tape at the same anatomic sites.
METHODS
Fifty-nine adults were scanned with the app and SS20; the same software was used to generate circumference estimates from device-acquired object files that were then compared with reference tape measurements.
RESULTS
The app and SS20 had similar coefficients of variation that were minimally larger than those by the tape (e.g., waist, 0.93%, 0.87%, and 0.06%). Correlations of the app and of SS20 with tape circumferences were all strong (p < 0.001) and similar in magnitude (R s: 0.72-0.93 and 0.78-0.95, respectively); minimally significant (p < 0.05 to p < 0.01) bias was present between both imaging approaches and some tape measurements.
CONCLUSION
These proof-of-concept observations combined with ubiquitous smartphone availability create the possibility of phenotyping adult body size and shape, with important clinical and research implications, on a global scale.
Topics: Anthropometry; Body Size; Mobile Applications; Smartphone
PubMed: 35491718
DOI: 10.1002/oby.23434 -
Women & Health Oct 2021The main aim of the current study was to examine novel anthropometric predictors of subjective weight among women. In this cross-sectional study, 229 women were selected...
The main aim of the current study was to examine novel anthropometric predictors of subjective weight among women. In this cross-sectional study, 229 women were selected through simple random sampling method. The participants completed the Multidimensional Body Self-Relation Questionnaire. Pearson correlation coefficient and linear regression were used to analyze the data. The mean subjective weight score was 4.05 ± 1.01. There was a significant relationship between anthropometric indices and subjective weight (Pearson r correlation range: 0.62-0.81, < .01). Beta coefficients for predictor variables indicated that weight (ß = -2.774, t (229) = -2.868, = .005), hip circumference (ß = 3.454, t (229) = 5.999, < .001), waist to hip ratio (ß = 4.218, t (229) = 4.953, < .001), waist to height ratio (ß = -3.284, t (229) = -2.067, = .04), and conicity index (ß = -0.708, t (229) = -2.518, = .013) significantly predicted the subjective weight. The waist to hip ratio was the most important predictor of the subjective weight. This study suggests using the waist to hip ratio as an anthropometric index in subjective weight studies in women. Considering the negative impact of subjective weight on women's health, these results indicate the need for interventions designed to control body weight and unsuitable anthropometric indices in women.
Topics: Anthropometry; Body Mass Index; Cross-Sectional Studies; Female; Humans; Risk Factors; Waist Circumference; Waist-Hip Ratio
PubMed: 34649476
DOI: 10.1080/03630242.2021.1988811 -
High Altitude Medicine & Biology Sep 2020Villamonte-Calanche, Wilfredo, Nelly Lam-Figueroa, Maria Jerí-Palomino, Cleto De-La-Torre, and Alexandra A. Villamonte-Jerí. Maternal altitude-corrected hemoglobin and...
Villamonte-Calanche, Wilfredo, Nelly Lam-Figueroa, Maria Jerí-Palomino, Cleto De-La-Torre, and Alexandra A. Villamonte-Jerí. Maternal altitude-corrected hemoglobin and at term neonatal anthropometry at 3400 m of altitude. . 21:287-291, 2020. Fetal growth is prominent in the last trimester of pregnancy. The development of the fetus depends on the nutrient consumption and oxygen delivery of the pregnant woman. Therefore, maternal anemia has an inverse relationship with fetal growth. Consequently, the newborn has lower anthropometric measurements. Residing in places of a high altitude increases the level of hemoglobin (Hb); as a result, the World Health Organization (WHO) recommends adjusting the value of Hb in maternal blood at 3400-m altitude by reducing 2.4 g/dL to obtain the corrected Hb (HbCorr). To determine if the relationship of maternal HbCorr for high altitude is related to term neonatal anthropometry at 3400-m altitude. We performed a retrospective cohort study and evaluated the neonatal anthropometric variables (weight, ponderal index, head circumference [HC], and HC for birthweight index) in 308 exposed pregnant women (HbCorr <11 g/dL) and 600 unexposed pregnant women (HbCorr ≥11 g/dL). We obtained absolute relative frequencies and measures of central tendency. Besides, we compared the qualitative and quantitative variables using the chi-square and the Student or the Mann-Whitney or Kruskal-Wallis test, if applicable. We also performed linear regression. Of anemic pregnant women, 68.2% were mild, while only 1% were severe. There was no relationship between HbCorr and neonatal anthropometry, and none of the anemic pregnant women showed a statistical difference in the neonatal anthropometric measures evaluated compared to the unexposed women. There is no relationship between HbCorr and neonatal anthropometry at 3400-m altitude.
Topics: Altitude; Anthropometry; Cephalometry; Female; Hemoglobins; Humans; Infant, Newborn; Pregnancy; Retrospective Studies
PubMed: 32522036
DOI: 10.1089/ham.2019.0127 -
DXA reference values and anthropometric screening for visceral obesity in Western Australian adults.Scientific Reports Oct 2020Limited reference values exist for visceral adipose tissue (VAT) mass measured by DXA. The objectives of this study were to provide reference values for DXA-derived VAT...
Limited reference values exist for visceral adipose tissue (VAT) mass measured by DXA. The objectives of this study were to provide reference values for DXA-derived VAT mass and compare the association with anthropometry measures. The study cohort comprised 677 men and 738 women aged 18-65 years from Western Australia. Whole-body scans using a GE Lunar iDXA and anthropometry measures were collected. Reference percentile data were stratified by sex and age. Correlation analysis compared DXA-derived and anthropometry variables. Specificity, sensitivity, and Youden's Index were used to evaluate the ability of anthropometric thresholds to predict individuals with high VAT. In men, waist circumference (WC), waist-hip ratio, and waist-height ratio (WHtR) had 'high' correlations with VAT mass. In women, only WHtR was 'highly' correlated with VAT mass. Overweight thresholds for WC, along with a body mass index of 25.0 kg/m in women, had the highest combination of sensitivity and specificity when using anthropometry measures to identify individuals with high VAT mass. We provide the first reference data sets for DXA-derived VAT mass among Western Australians. Excessive VAT mass may be identified in men using the overweight WC threshold and in women using both the overweight BMI and WC thresholds.
Topics: Absorptiometry, Photon; Adolescent; Adult; Aged; Anthropometry; Australia; Biomarkers; Body Mass Index; Female; Humans; Magnetic Resonance Imaging; Male; Middle Aged; Obesity, Abdominal; Reference Values; Waist Circumference; Waist-Height Ratio; Waist-Hip Ratio; Young Adult
PubMed: 33127940
DOI: 10.1038/s41598-020-73631-x -
European Spine Journal : Official... Feb 2016As accurate and reproducible measurements of spinal curvature are crucial in the examination of patients with adolescent idiopathic scoliosis (AIS), this systematic... (Review)
Review
Reliability and validity of inexpensive and easily administered anthropometric clinical evaluation methods of postural asymmetry measurement in adolescent idiopathic scoliosis: a systematic review.
PURPOSE
As accurate and reproducible measurements of spinal curvature are crucial in the examination of patients with adolescent idiopathic scoliosis (AIS), this systematic review aims to report on the reliability and validity of a range of inexpensive and easily administered anthropometric methods of postural asymmetry measurement in an AIS population, to inform practice in a clinical setting.
METHODS
A systematic search of health research databases located studies assessing reliability and validity of inexpensive and easily administered anthropometric measures.
RESULTS
Fourteen studies satisfied eligibility criteria. The methodological quality of included studies ranged from low to high. Validity studies were of moderate to high quality. In total, nine clinically applicable, inexpensive and easily administered anthropometric methods were identified, for assessing AIS curvature. All methods demonstrated high to very high inter-observer and intra-observer reliability. Reported criterion validity of the scoliometer and 2D photographs, when compared to Cobb angle assessed from radiographs, ranged from low to very high. iPhone measurements correlated well with scoliometer measurements. 2D photography results had a moderate to high correlation with 3D topography results.
CONCLUSIONS
Overall, strong levels of evidence exist for iPhone and scoliometer measurements, with a high to very high reliability and moderate to very high validity. Moderate levels of evidence exist for scoliometer with mathematical formula and clinical examination with moderate and low validity, respectively. Limited evidence exists for aesthetic tools TRACE and AI and 2D photography. These results indicate there are accurate and reproducible anthropometric measures that are inexpensive and applicable in therapy settings to assess postural asymmetry; however, these only exist for measurement in the transverse plane, despite 3D characteristics of AIS. Further research is required into an inexpensive and easily administered method that can assess postural asymmetry in all anatomical planes.
Topics: Adolescent; Anthropometry; Humans; Mobile Applications; Observer Variation; Orthopedic Equipment; Photography; Posture; Reproducibility of Results; Scoliosis; Smartphone
PubMed: 25917824
DOI: 10.1007/s00586-015-3961-7 -
American Journal of Human Biology : the... Jun 2022To determine the most frequently body frame size (BFS) measurement and to compare the cut-off values used for classifying body size in children and adolescents. (Review)
Review
OBJECTIVE
To determine the most frequently body frame size (BFS) measurement and to compare the cut-off values used for classifying body size in children and adolescents.
METHODS
This systematic review focused on primary studies and scientific reports published in Medline Ovid, EMBASE, Web of Science, or Scopus between January 1, 2007 and March 31, 2021. Eligible studies must have included at least one BFS parameter measured in healthy children or adolescents. A descriptive analysis and graphic comparison were performed when values of the body frame were available.
RESULTS
A total of 26 studies involving 317 202 children and adolescents from all over the world were included. The report of Frame index predominated (46%). It was followed by the biacromial diameter single or combined with the bitrochanteric and biiliocristal diameter (27%), the wrist circumference (19%), and the grant index (12%). Fourteen studies reported percentile values of the BFS measurement, but only four presented cut-off values.
CONCLUSIONS
There was no unified BFS measurement in children and adolescents neither reference cut-off values for categorization. The Frame index was the most frequently used. It is difficult to compare BFS statistics due to the diversity of measurements. It is necessary to standardize the use of the methods for measuring BFS.
Topics: Adolescent; Anthropometry; Body Size; Child; Humans; Reference Values; Wrist
PubMed: 35014113
DOI: 10.1002/ajhb.23720