scholarly journals Automatic Measurement of Neutral Foot Posture Using Three-Dimensional Scanning

2021 ◽  
Vol 3 (3) ◽  
pp. 84-92
Author(s):  
Chien-Hung Lin ◽  
Yan-Yu Lin
Keyword(s):  
Weight Status ◽  
Three Dimensional ◽  
Automatic Measurement ◽  
3D Scanning ◽  
Normal Weight ◽  
Foot Posture ◽  
Foot Model ◽  
The Subject ◽  
Neutral Posture ◽  
Posture Assessment

The Rearfoot Angle (RFA) is the most commonly method used for foot posture assessment, and it is also a method for evaluating the subtalar joint neutral foot posture. However, orthopedists and researchers often meet trouble for the measurements of the RFA and neutral foot posture due to lacking measurement with automation and objectivity. In general, the RFA was measured using a goniometer to align with manual markers on the foot. The purpose of this study implements the automatic computing of leg angle, foot angle, and RFA by the foot model using Three-Dimensional (3D) scanning. This study contributes to the algorithms to The purpose of this study implement the automatic and objective computing of leg angle, foot angle, and RFA by the foot model using 3D scanning. The automatic calculation on leg angle, foot angle, and neutral foot posture has been created, test, and validated completely in this study. There are two algorithm methods proposed to determine the midpoint on the leg or foot outline. The midline has been computed by linear regression through five midpoints. The leg and foot angles are calculated by the tibial and calcaneal midlines, respectively. Through the subject standing on eversion foot platforms, the neutral posture of the foot can be computed by the leg and foot angles determined by the 3D model scanned of the foot with various tilt angles. The determinations of the midpoint and midline have been demonstrated algorithm by MATLAB. Based on comparing with the goniometer measured, selecting the midpoint algorithm of the limit points and the lowest point methods to determine the tibial and calcaneal midlines respectively would carry out better results. The foot 3D scanning measurement proposed in this study has been tested and validated from the goniometer. This study can determine the leg angle, foot angle, and neutral foot postures for a subject with normal weight status, but be not suitable for that with obese weight status. In the future, this study can provide guidance for foot posture assessment and personal insoles design.

scholarly journals Custom-Molded Foot-Orthosis Intervention and Multisegment Medial Foot Kinematics During Walking

2011 ◽  
Vol 46 (4) ◽  
pp. 358-365 ◽  
Author(s):  
Stephen C. Cobb ◽  
Laurie L. Tis ◽  
Jeffrey T. Johnson ◽  
Yong “Tai” Wang ◽  
Mark D. Geil
Keyword(s):  
Repeated Measures ◽  
Three Dimensional ◽  
Metatarsophalangeal Joint ◽  
Foot Kinematics ◽  
First Metatarsophalangeal Joint ◽  
Lower Extremity Injuries ◽  
Full Contact ◽  
Foot Posture ◽  
Foot Model ◽  
Foot Orthosis

Context: Foot-orthosis (FO) intervention to prevent and treat numerous lower extremity injuries is widely accepted clinically. However, the results of quantitative gait analyses have been equivocal. The foot models used, participants receiving intervention, and orthoses used might contribute to the variability. Objective: To investigate the effect of a custom-molded FO intervention on multisegment medial foot kinematics during walking in participants with low-mobile foot posture. Design: Crossover study. Setting: University biomechanics and ergonomics laboratory. Patients or Other Participants: Sixteen participants with low-mobile foot posture (7 men, 9 women) were assigned randomly to 1 of 2 FO groups. Intervention(s): After a 2-week period to break in the FOs, individuals participated in a gait analysis that consisted of 5 successful walking trials (1.3 to 1.4 m/s) during no-FO and FO conditions. Main Outcome Measure(s): Three-dimensional displacements during 4 subphases of stance (loading response, mid-stance, terminal stance, preswing) were computed for each multisegment foot model articulation. Results: Repeated-measures analyses of variance (ANOVAs) revealed that rearfoot complex dorsiflexion displacement during midstance was greater in the FO than the no-FO condition (F1,14 = 5.24, P = .04, partial η2 = 0.27). Terminal stance repeated-measures ANOVA results revealed insert-by-insert condition interactions for the first metatarsophalangeal joint complex (F1,14 = 7.87, P = .01, partial η2 = 0.36). However, additional follow-up analysis did not reveal differences between the no-FO and FO conditions for the balanced traditional orthosis (F1,14 = 4.32, P = .08, partial η2 = 0.38) or full-contact orthosis (F1,14 = 4.10, P = .08, partial η2 = 0.37). Conclusions: Greater rearfoot complex dorsiflexion during midstance associated with FO intervention may represent improved foot kinematics in people with low-mobile foot postures. Furthermore, FO intervention might partially correct dys-functional kinematic patterns associated with low-mobile foot postures.

Geological Field Sketches and Illustrations

2019 ◽  
Author(s):  
Matthew J. Genge
Keyword(s):  
Cross Sections ◽  
Earth Science ◽  
Three Dimensional ◽  
Worked Examples ◽  
Scientific Publications ◽  
Thin Sections ◽  
Geological Features ◽  
Different Types ◽  
The Subject

Drawings, illustrations, and field sketches play an important role in Earth Science since they are used to record field observations, develop interpretations, and communicate results in reports and scientific publications. Drawing geology in the field furthermore facilitates observation and maximizes the value of fieldwork. Every geologist, whether a student, academic, professional, or amateur enthusiast, will benefit from the ability to draw geological features accurately. This book describes how and what to draw in geology. Essential drawing techniques, together with practical advice in creating high quality diagrams, are described the opening chapters. How to draw different types of geology, including faults, folds, metamorphic rocks, sedimentary rocks, igneous rocks, and fossils, are the subjects of separate chapters, and include descriptions of what are the important features to draw and describe. Different types of sketch, such as drawings of three-dimensional outcrops, landscapes, thin-sections, and hand-specimens of rocks, crystals, and minerals, are discussed. The methods used to create technical diagrams such as geological maps and cross-sections are also covered. Finally, modern techniques in the acquisition and recording of field data, including photogrammetry and aerial surveys, and digital methods of illustration, are the subject of the final chapter of the book. Throughout, worked examples of field sketches and illustrations are provided as well as descriptions of the common mistakes to be avoided.

scholarly journals Emotional Eating in Adolescence: Effects of Emotion Regulation, Weight Status and Negative Body Image

Nutrients ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 79
Author(s):  
Lenka H. Shriver ◽  
Jessica M. Dollar ◽  
Susan D. Calkins ◽  
Susan P. Keane ◽  
Lilly Shanahan ◽  
...  
Keyword(s):  
Body Image ◽  
Emotion Regulation ◽  
Emotional Regulation ◽  
Emotional Eating ◽  
Weight Status ◽  
Normal Weight ◽  
Linear Regression Models ◽  
Obesity Risk ◽  
Negative Body Image ◽  
Increased Risk

Emotional eating is associated with an increased risk of binge eating, eating in the absence of hunger and obesity risk. While previous studies with children and adolescents suggest that emotion regulation may be a key predictor of this dysregulated eating behavior, little is known about what other factors may be influencing the link between emotional regulation and emotional eating in adolescence. This multi-method longitudinal study (n = 138) utilized linear regression models to examine associations between childhood emotion regulation, adolescent weight status and negative body image, and emotional eating at age 17. Emotion regulation predicted adolescent emotional eating and this link was moderated by weight status (β = 1.19, p < 0.01) and negative body image (β = −0.34, p < 0.01). Higher engagement in emotional eating was predicted by lower emotional regulation scores among normal-weight teens (β = −0.46, p < 0.001) but not among overweight/obese teens (β = 0.32, p > 0.10). Higher scores on emotion regulation were significantly associated with lower emotional eating at high (β = −1.59, p < 0.001) and low (β = −1.00, p < 0.01) levels of negative body image. Engagement in emotional eating was predicted by higher negative body image among overweight/obese teens only (β = 0.70, p < 0.001). Our findings show that while better childhood emotion regulation skills are associated with lower emotional eating, weight status and negative body image influence this link and should be considered as important foci in future interventions that aim to reduce emotional eating in adolescence.

Delayed Romantic Experience: Association of Romantic Relationship and Weight Change Patterns over 7 Years among Taiwanese Adolescents

2021 ◽  
pp. 0044118X2110235
Author(s):  
Jih-Cheng Yeh ◽  
Duan-Rung Chen
Keyword(s):  
High School Students ◽  
Interpersonal Relationships ◽  
Junior High School ◽  
Weight Change ◽  
Romantic Relationship ◽  
Weight Status ◽  
Normal Weight ◽  
School Students ◽  
Student Sample ◽  
Weight Change Pattern

Stigmatization of overweight and obese individuals is common in interpersonal relationships. This study investigated longitudinal weight change patterns among Taiwanese adolescents and the relationship of weight change patterns with delayed romantic experience from late adolescence to young adulthood by using a representative panel survey. Individuals were divided into six weight change pattern categories according to changes in their body mass index. Two-stage stratified and clustered sampling was used to obtain a representative student sample, and 1,834 junior high school students were followed up over 7 years. Persistent obesity and a change from an underweight to a normal weight status over 7 years were independently associated with delayed romantic experience in both sexes. Moreover, females but not males who changed from an underweight or normal weight status to an overweight or obese status had increased odds of delayed romantic experience. Persistent obesity should be addressed early in life because it plays a crucial role in delayed romantic experience.

scholarly journals Structured-light 3D scanning of exhibited historical clothing—a first-ever methodical trial and its results

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Jerzy Montusiewicz ◽  
Marek Miłosz ◽  
Jacek Kęsik ◽  
Kamil Żyła
Keyword(s):  
Cultural Heritage ◽  
Information Technologies ◽  
Structured Light ◽  
Three Dimensional ◽  
3D Models ◽  
3D Scanning ◽  
Dimensional Representation ◽  
3D Scanner ◽  
Three Dimensional Representation ◽  
3D Scanners

AbstractHistorical costumes are part of cultural heritage. Unlike architectural monuments, they are very fragile, which exacerbates the problems of their protection and popularisation. A big help in this can be the digitisation of their appearance, preferably using modern techniques of three-dimensional representation (3D). The article presents the results of the search for examples and methodologies of implementing 3D scanning of exhibited historical clothes as well as the attendant problems. From a review of scientific literature it turns out that so far practically no one in the world has made any methodical attempts at scanning historical clothes using structured-light 3D scanners (SLS) and developing an appropriate methodology. The vast majority of methods for creating 3D models of clothes used photogrammetry and 3D modelling software. Therefore, an innovative approach was proposed to the problem of creating 3D models of exhibited historical clothes through their digitalisation by means of a 3D scanner using structural light technology. A proposal for the methodology of this process and concrete examples of its implementation and results are presented. The problems related to the scanning of 3D historical clothes are also described, as well as a proposal how to solve them or minimise their impact. The implementation of the methodology is presented on the example of scanning elements of the Emir of Bukhara's costume (Uzbekistan) from the end of the nineteenth century, consisting of the gown, turban and shoes. Moreover, the way of using 3D models and information technologies to popularise cultural heritage in the space of digital resources is also discussed.

scholarly journals Discordance between Body-Mass Index and Body Adiposity Index in the Classification of Weight Status of Elderly Patients with Stable Coronary Artery Disease

2021 ◽  
Vol 10 (5) ◽  
pp. 943
Author(s):  
Bartosz Hudzik ◽  
Justyna Nowak ◽  
Janusz Szkodzinski ◽  
Aleksander Danikiewicz ◽  
Ilona Korzonek-Szlacheta ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Body Mass Index ◽  
Coronary Artery ◽  
Weight Status ◽  
Stable Coronary Artery Disease ◽  
Reference Method ◽  
Normal Weight ◽  
Body Adiposity ◽  
Artery Disease

Background and Aims: Body-mass index (BMI) is a popular method implemented to define weight status. However, describing obesity by BMI may result in inaccurate assessment of adiposity. The Body Adiposity Index (BAI) is intended to be a directly validated method of estimating body fat percentage. We set out to compare body weight status assessment by BMI and BAI in a cohort of elderly patients with stable coronary artery disease (CAD). Methods: A total of 169 patients with stable CAD were enrolled in an out-patient cardiology clinic. The National Research Council (US) Committee on Diet and Health classification was used for individuals older than 65 years as underweight BMI < 24 kg/m2, normal weight BMI 24–29 kg/m2, overweight BMI 29–35 kg/m2, and obesity BMI > 35 kg/m2. In case of BAI, we used sex- and age-specific classification of weight status. In addition, body fat was estimated by bioelectrical impedance analysis (BImpA). Results: Only 72 out of 169 patients (42.6%) had concordant classification of weight status by both BMI and BAI. The majority of the patients had their weight status either underestimated or overestimated. There were strong positive correlations between BMI and BImpA (FAT%) (R = 0.78 p < 0.001); BAI and BImpA (FAT%) (R = 0.79 p < 0.001); and BMI and BAI (R = 0.67 p < 0.001). BMI tended to overestimate the rate of underweight, normal weight or overweight, meanwhile underestimating the rate of obesity. Third, BMI exhibited an average positive bias of 14.4% compared to the reference method (BImpA), whereas BAI exhibited an average negative bias of −8.3% compared to the reference method (BImpA). Multivariate logistic regression identified independent predictors of discordance in assessing weight status by BMI and BAI: BImpA (FAT%) odds ratio (OR) 1.29, total body water (%) OR 1.61, fat mass index OR 2.62, and Controlling Nutritional Status (CONUT) score OR 1.25. Conclusions: There is substantial rate of misclassification of weight status between BMI and BAI. These findings have significant implications for clinical practice as the boundary between health and disease in malnutrition is crucial to accurately define criteria for intervention. Perhaps BMI cut-offs for classifying weight status in the elderly should be revisited.

Is overweight/obesity a risk factor for atopic allergic disease in prepubertal children? A case–control study

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Aysel Vehapoglu ◽  
Zeynep Ebru Cakın ◽  
Feyza Ustabas Kahraman ◽  
Mustafa Atilla Nursoy ◽  
Ali Toprak
Keyword(s):  
Body Weight ◽  
Allergic Disease ◽  
Weight Status ◽  
Normal Weight ◽  
Overweight And Obesity ◽  
University Hospital ◽  
Healthy Children ◽  
Prepubertal Children ◽  
Body Weight Status ◽  
Increased Risk

Abstract Objectives It is unclear whether body weight status (underweight/normal weight/overweight/obese) is associated with allergic disease. Our objective was to investigate the relationship between body weight status (body mass index; BMI) and atopic allergic disease in prepubertal children, and to compare children with atopic allergic diseases with non atopic healthy children. Methods A prospective cross sectional study of 707 prepubertal children aged 3–10 years was performed; the participants were 278 atopic children with physician-diagnosed allergic disease (allergic rhinitis and asthma) (serum total IgE level >100 kU/l and eosinophilia >4%, or positivity to at least one allergen in skin test) and 429 non atopic healthy age- and sex-matched controls. Data were collected between December 2019 and November 2020 at the Pediatric General and Pediatric Allergy Outpatient Clinics of Bezmialem Vakıf University Hospital. Results Underweight was observed in 11.6% of all participants (10.8% of atopic children, 12.2% of healthy controls), and obesity in 14.9% of all participants (18.0% of atopic children, 12.8% of controls). Obese (OR 1.71; 95% CI: 1.08–2.71, p=0.021), and overweight status (OR 1.62; 95% CI: 1.06–2.50, p=0.026) were associated with an increased risk of atopic allergic disease compared to normal weight in pre-pubertal children. This association did not differ by gender. There was no relationship between underweight status and atopic allergic disease (OR 1.03; 95% CI: 0.63–1.68, p=0.894). Conclusions Overweight and obesity were associated with an increased risk of atopic allergic disease compared to normal weight among middle-income and high-income pre pubertal children living in Istanbul.

scholarly journals Associations of the pre-pregnancy weight status with anemia and the erythropoiesis-related micronutrient status

2021 ◽  
pp. 1-31
Author(s):  
Noor Rohmah Mayasari ◽  
Tzu-Yu Hu ◽  
Jane C-J Chao ◽  
Chyi-Huey Bai ◽  
Yi Chun Chen ◽  
...  
Keyword(s):  
Pregnant Women ◽  
Weight Status ◽  
Vitamin B12 Deficiency ◽  
Population Level ◽  
Normal Weight ◽  
Nutritional Deficiencies ◽  
Deficiency Anemia ◽  
Dietary Analysis ◽  
Dietary Recall ◽  
Pregnancy Weight

Abstract Objective: The coexistence of underweight (UW) and overweight (OW)/obese (OB) at the population level is known to affect iron-deficiency anemia (IDA), but how the weight status affects erythropoiesis during pregnancy is less clear at a population scale. This study investigated associations between the pre-pregnancy body mass index (pBMI) and erythropoiesis-related nutritional deficiencies. Design: Anthropometry, blood biochemistry, and 24-h dietary recall data were collected during prenatal care visits. The weight status was defined based on the pBMI. Mild nutrition deficiency-related erythropoiesis was defined if individuals had an ID, folate depletion, or a vitamin B12 deficiency. Setting: The Nationwide Nutrition and Health Survey in Taiwan (Pregnant NAHSIT 2017-2019). Participants: We included 1456 women aged 20 to 45 years with singleton pregnancies. Results: Among these pregnant women, 9.6% were UW, and 29.2% were either OW (15.8%) or OB (13.4%). A U-shaped association between the pBMI and IDA was observed, with decreased odds (OR; 95% CI) for OW subjects (0.6; 0.4˜0.9) but increased odds for UW (1.2; 0.8˜2.0) and OB subjects (1.2; 0.8˜1.8). The pBMI was positively correlated with the prevalence of a mild nutritional deficiency. Compared to normal weight (NW), OB pregnant women had 3.4-fold (3.4; 1.4˜8.1) higher odds for multiple mild nutritional deficiencies, while UW individuals had lowest odds (0.3; 0.1-1.2). A dietary analysis showed negative relationships of pBMI with energy, carbohydrates, protein, iron, and folate intakes, but positive relationship with fat intakes. Conclusion: The pre-pregnancy weight status can possibly serve as a good nutritional screening tool for preventing IDA during pregnancy.

scholarly journals Children’s moderate-to-vigorous physical activity on weekdays versus weekend days: a multi-country analysis

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Keith Brazendale ◽  
◽  
Michael W. Beets ◽  
Bridget Armstrong ◽  
R. Glenn Weaver ◽  
...  
Keyword(s):  
Physical Activity ◽  
Weight Status ◽  
Vigorous Physical Activity ◽  
Normal Weight ◽  
Analytical Models ◽  
Accelerometer Data ◽  
Inclusion Criteria ◽  
Total Wear ◽  
Valid Data ◽  
Country Analysis

Abstract Purpose The Structured Days Hypothesis (SDH) posits that children’s behaviors associated with obesity – such as physical activity – are more favorable on days that contain more ‘structure’ (i.e., a pre-planned, segmented, and adult-supervised environment) such as school weekdays, compared to days with less structure, such as weekend days. The purpose of this study was to compare children’s moderate-to-vigorous physical activity (MVPA) levels on weekdays versus weekend days using a large, multi-country, accelerometer-measured physical activity dataset. Methods Data were received from the International Children’s Accelerometer Database (ICAD) July 2019. The ICAD inclusion criteria for a valid day of wear, only non-intervention data (e.g., baseline intervention data), children with at least 1 weekday and 1 weekend day, and ICAD studies with data collected exclusively during school months, were included for analyses. Mixed effects models accounting for the nested nature of the data (i.e., days within children) assessed MVPA minutes per day (min/day MVPA) differences between weekdays and weekend days by region/country, adjusted for age, sex, and total wear time. Separate meta-analytical models explored differences by age and country/region for sex and child weight-status. Results/findings Valid data from 15 studies representing 5794 children (61% female, 10.7 ± 2.1 yrs., 24% with overweight/obesity) and 35,263 days of valid accelerometer data from 5 distinct countries/regions were used. Boys and girls accumulated 12.6 min/day (95% CI: 9.0, 16.2) and 9.4 min/day (95% CI: 7.2, 11.6) more MVPA on weekdays versus weekend days, respectively. Children from mainland Europe had the largest differences (17.1 min/day more MVPA on weekdays versus weekend days, 95% CI: 15.3, 19.0) compared to the other countries/regions. Children who were classified as overweight/obese or normal weight/underweight accumulated 9.5 min/day (95% CI: 6.9, 12.2) and 10.9 min/day (95% CI: 8.3, 13.5) of additional MVPA on weekdays versus weekend days, respectively. Conclusions Children from multiple countries/regions accumulated significantly more MVPA on weekdays versus weekend days during school months. This finding aligns with the SDH and warrants future intervention studies to prioritize less-structured days, such as weekend days, and to consider providing opportunities for all children to access additional opportunities to be active.

scholarly journals Preliminary Evidence of Children’s Weight Gain From 5 Months of Home Quarantine During the COVID-19 Pandemic

2021 ◽  
pp. 155982762110066
Author(s):  
Keith Brazendale ◽  
Jeanette Garcia ◽  
Ethan T. Hunt ◽  
Michael Blankenship ◽  
Daniel Eisenstein ◽  
...  
Keyword(s):  
Weight Status ◽  
Preventive Measures ◽  
Preliminary Evidence ◽  
Normal Weight ◽  
Preventative Measures ◽  
Significant Difference ◽  
The Impact ◽  
Weight Data ◽  
Overweight Or Obesity

Purpose. Preventive measures to curtail the spread of the Coronavirus Disease 2019 (COVID-19)—such as home quarantine, closure of schools/programs—are necessary, yet the impact of these restrictions on children’s weight status is unknown. The purpose of this case report was to investigate changes in children’s body mass index (BMI) and zBMI during COVID-19 quarantine. Methods. Children had their heights and weights recorded early March 2020 (pre-COVID-19) and 5 months later (early August 2020). Paired sample t tests examined changes in BMI and zBMI from baseline to follow-up. Results. Twenty-nine children (62% female; mean age 9.3 years; 27.5% with overweight or obesity) provided height and weight data at both time points. There was a significant difference in pre-COVID-19 BMI (mean [M] = 20.1, standard deviation [SD] = 6.0) and follow-up BMI (M = 20.7, SD = 6.4); t(57) = −3.8, P < .001, and pre-COVID-19 zBMI (M = 0.8, SD = 0.9) and follow-up zBMI (M = 0.9, SD = 0.9); t(57) = -3.1, P = .003. Five of the 29 children moved from normal weight to overweight (n = 4) or obese (n = 1) during 5 months of quarantine. Conclusions. Preliminary evidence shows most children increased their BMI and zBMI values from pre-COVID-19 assessment to the follow-up assessment, 5 months later. These initial findings identify potential incidental negative health consequences of children as a result of COVID-19 preventative measures such as home quarantine.

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