Johan F.M. Molenbroek

Johan F.M. Molenbroek
Delft University of Technology | TU · Faculty Industrial Design Engineering

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Retired from TUDelft but still active in writing and reviewing anthropometry projects and inclusive design

About

145
Publications
165,726
Reads
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1,515
Citations
Additional affiliations
December 1978 - present
Delft University of Technology
Position
  • Professor (Associate)
December 1978 - present
Delft University of Technology
Position
  • Professor (Associate)
Description
  • 1D anthropometry, 3D anthropometry, product safety, elderly, inclusive design, ergonomics, toilets
Education
September 1980 - December 1994
Delft University of Technology
Field of study
  • industrial design engineering
September 1975 - December 1978
University of Twente
Field of study
  • biomedical engineering
September 1974 - July 1975
University of Twente
Field of study
  • mechanical engineering

Publications

Publications (145)
Preprint
Workstations comprise a set of tools, machines, environments etc. This complicates the problem finding in the design process. A solution for it is good prototyping. Since each prototyping tool in design has advantages and disadvantages and minimal performance, combining and using it in a custom design process based on the existing conditions and de...
Article
Full-text available
Background: An appropriate match between a product and its end-users requires anthropometric data, which show variations among different countries. Proper Personal Protection Equipment (PPE) fit is key for safety and comfort. Chile had no head and facial anthropometric data available in order to design face/head PPE. Objective: To describe face/...
Article
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Public health will improve if the prevention means take care of the variation in human characteristics and do not only consider the average or reference man [...]
Article
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D entists work on the mouth all day long, which is a small and dark area. In order to analyze the teeth and locate possible problems, they have to be able to distinguish small details and low contrasts. This means that they use their eyes in a very intensive way. Therefore, adequate lighting is very important in order to make perception optimal. Op...
Article
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The use of 3D anthropometric data of children’s heads and faces has great potential in the development of protective gear and medical products that need to provide a close fit in order to function well. Given the lack of detailed data of this kind, the aim of this study is to map the size and shape variation of Dutch children’s heads and faces and...
Article
Full-text available
Background: Grip strength is an essential component of physical fitness. The objective of this study was to develop normative handgrip strength data for Iranian healthy boys and girls comparing their handgrip strength with international reference values. Methods: Handgrip strength was measured in 2637 healthy children/adolescents (1391 boys and...
Article
Background: Former studies on Work-related upper limb disorders (WRULD) within university education report substantial prevalence rates. In this study, developments in WRULD amongst students in the period 2004-2014 were investigated. Our findings can be a benchmark for future studies, in particular when there are major societal changes as in the c...
Article
Anthropometry is critical for product and workplace design. Highly prevalent, office work is associated with sedentarism and physical discomfort due to prolonged sitting. Dynamic seating (alternating across sitting, perching, and standing) has been suggested as an alternative to overcome those problems. The current study tested a large sample of an...
Article
Background: Anthropometrics is very important when ensuring a physical match between end users and product or workstations. Objectives: The purpose of this study are twofold, to provide anthropometric data for the design of products and to examine the secular changes in the adult Chilean workers in a period of more than 20 years. Methods: Nine...
Article
The facial fit of respirators is crucial for determining how effectively respirators may protect users from exposure to airborne contaminants, when their use is required in the workplace. In the Chilean market, all the respirators available have been designed and manufactured using foreign regulations. The aim of this research was to determine the...
Poster
Full-text available
This table is an estimation of 27 body dimensions of Dutch Adults based on German data created by a German prof dr Hans Juergens who tought me in 1979 how to measure people on an accurate way. He delivered his results to the German DIN 33402. I compared the Dutch stature with the German stature for the boys and girls aged 20. I found the Dutch were...
Article
Anthropometry has been used extensively for designing safe and sustainable products and workplaces. However, it is common that designers need straightforward guidelines and dimensions, which they often lack, for specific design situations. Anthropometric data are usually presented in tables that summarize percentile values, separated by gender, of...
Article
Full-text available
Designing products that closely inte act with the human body can be quite challenging. Think for example about wea ables like helmets, (Vi tual Reality-) goggles, masks, garments, spo ts b aces, or shoes. We are all unique individuals and this requires designers to carefully consider the great variety of human body shapes and come up with sma t way...
Article
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The paper of Toon Huysmans describes the DINED Mannequin platform and the knowledge of 3D scanning, which enables generating 3D data about the variation of body shapes. The Mannequin platform was used by a design project for a wetsuit. The Dutch male database was used for setting up a sizing system and creating a 3D design manikin for each size. Th...
Article
Chile has experienced significant improvements in its economy; thus, a secular trend in height has been observed in its population. Gender equality has also improved hand in hand with active policies addressing the gender gap in several dimensions (work, education, health) and overall economic improvement. This study examined changes in sexual heig...
Preprint
Full-text available
There is a significant diversity in cognitive, perceptual and physical capability in the human population that changes over time. Where people should not be considered as having ‘able-bodiedness’, but instead as people having ‘variable capabilities’ that are ‘demanded by the product, service or environment’, according to Keates and Coleman 2013. Am...
Article
A secular trend in body height has been experienced in many nations and populations, hypothesized to be the result of better living conditions. Educational level has been shown to be closely associated with body height. This study examined the changes in body height and popliteal height in a group of adult Chilean male workers by age cohort and the...
Article
A secular trend in body height has been experienced in many nations and populations, hypothesized to be the result of better living conditions. Educational level has been shown to be closely associated with body height. This study examined the changes in body height and popliteal height in a group of adult Chilean male workers by age cohort and the...
Article
3D anthropometry has created a significant opportunity for designers to improve fit by offering detailed information regarding the shape of the human body. Various researchers have shown the benefit of using 3D anthropometric data in the development or evaluation of head related products for adults. However, detailed 3D anthropometric data of child...
Conference Paper
Full-text available
The Faculty of Industrial Design Engineering of the Delft University of Technology offers a bachelor's degree education programme and three master's programmes. Our students are lectured in ergonomics and learn to design and conduct research in ergonomics. In this paper we describe the development of methods to realise ergonomic fit mapping based o...
Conference Paper
A 3D head and face scan data can be usefully applied in the ergonomic design of a wearable product such as an oxygen mask or a virtual reality (VR) headset to support the safety as well as comfort for a certain amount of a target population. This study is aimed to develop analysis and design methods of an ergonomic facial wearable products (e.g., p...
Article
Full-text available
Background: Clinical Breast Examination (CBE) is the examination of a women's breasts by a healthcare professional, such as a breast surgeon, family physician or breast-care nurse who is trained to recognise many different types of abnormalities and warning signs in the breast [1]. CBE is particularly important in rural areas and developing countr...
Article
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Introduction: There is still a need for competent breast lump detection palpation skills, especially in developing countries. Our goal is to design, develop, and establish a test to determine whether students can, by touch alone, identify and discriminate between a range of different simulated lesions at different adiposity levels. Methods: Comm...
Chapter
Non-pharmacological interventions have been applied to manage Behavioural and Psychological Symptoms of Dementia (BPSD). However, these interventions have not been assessed from an ergonomics perspective. Ergonomics has investigated the age-related capability changes in terms of sensory, cognition and movement aspects. This study aims to review the...
Chapter
Full-text available
Obesity is a growing issue in western societies with consequences for the field of human centered design. Most anthropometric data sources assume the data follow the Gaussian distribution, with population data symmetrically distributed above and below the mean value. This assumption is often true in length measurements like body heights, but may no...
Chapter
The aim of this study was to update the Chilean male workers’ anthropometric database to be used for design purposes and to examine the secular changes observed in a group of anthropometric variables for Chilean male workers. Data collection involved a sample of 2,346 male workers with ages ranging from 18 to 65+, assigned to the Mutual de Segurida...
Chapter
The study investigated the extent to which electronic voting is accessible to Dutch voters, especially the visually impaired, those with low literacy, and the elderly. Together with the different user groups, a series of electronic interfaces were developed and simulations of a vote-printer were built to run tests on large numbers of participants....
Article
Obtaining an appropriate match between a product and its end-users requires anthropometric data, which are typically outdated and show variations among different countries. Chile had its anthropometric data taken nearly 20 years ago, thus they are probably outdated. The purpose of this paper is to describe some anthropometric characteristics of Chi...
Conference Paper
Full-text available
To avoid radiation exposure to the body, the rotation centre of the shoulder complex is often assessed using the Optotrak motion capture system instead of X-ray imaging. Recently, 3D body scanning techniques evolved from static to temporal scanning. This study investigated if a time series of 3D body scans may be an alternative for motion capture s...
Data
This video is showing my current working progress for the contact pressure simulation using the finite element analysis technique, which can be applied for designing facial wearable products such as a face mask or a head-mounted display. Of course, there are things to considering and updating, but this video is at least showing a fundamental concep...
Conference Paper
Full-text available
3D body scanning has been used broadly including digital human modeling, simulation, ergonomic product design, and so forth. This research used template-registered faces of 336 Koreans in order to use them to design an oxygen mask that provides good fit to Korean faces. The finite element analysis method is applied onto the template-registered face...
Conference Paper
In Ergonomic product design, designers need to translate anthropometric data of the target population into product dimensions or sizing systems. Currently, sizing systems are often based on traditional anthropometric data and generally use the variation of one or two key body dimensions directly related to the product. For products that need to clo...
Article
Anthropometry is a key element of ergonomic studies for addressing the problem of fitting the tasks/products to user characteristics, but there is a gap between anthropometric data and their application for designing ergonomic products and environments. This research was conducted to review the literature on the methodology and applications of anth...
Article
Full-text available
Background: Despite offering many benefits, direct manual anthropometric measurement method can be problematic due to their vulnerability to measurement errors. Objective: The purpose of this literature review was to determine, whether or not the currently published anthropometric studies of school children, related to ergonomics, mentioned or e...
Article
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Background: The train toilet can form a barrier for those wishing to travel by train as it is perceived as being dirty, and therefore its use as being unpleasant. In addition, Dutch train toilet users have the additional issue of storing their hand luggage in the toilet's confined spaceOBJECTIVE:In this article, we examine the issue of Dutch trave...
Article
Anthropometric surveys are the most common method of gathering human morphometric data, used to design clothing, products and workspaces. The aim of this paper was to assess how current peer reviewed literature addresses the accuracy, reliability and precision regarding manual anthropometric surveys applied to adult working populations in the field...
Article
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This paper reports the results of an investigation into changes in body shape anthropometry over the past several decades and discusses the impact of those changes on seating in transport, especially airliners. Changes in some body shape dimensions were confirmed in a sample of students at TU Delft; several of the changes, e.g. hip breadth, seated,...
Conference Paper
Full-text available
3D scan images have been successfully applied in ergonomic product design. Features of human body parts (e.g., landmarks, measurements, curvatures, surfaces, volumes) extracted from 3D body scan images can be used to analyze variations of the size and shape of human bodies. The information of size and shape variations can be applied in product desi...
Conference Paper
Full-text available
A sizing system of a multiple-size product has been conventionally generated based on an anthropometric size of a human body part. But a product which fits a complex-shaped body part such as the face needs to have a sizing system generated with consideration of body shape characteristics. This study applied template registration and machine learnin...
Article
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Objective: To investigate the influence of three different types of shoe models frequently worn at home, including an open heel shoe model, on gait parameters that are associated with fall risk in older persons. Methods: Twenty-five community-dwelling independent older persons were asked to walk on an electronic walkway system, the GAITRite ® walkw...
Article
3D human body scan datasets have been collected and various techniques of post-processing, size and shape analysis, and applications in product design have been introduced. This paper is aimed to introduce techniques and cases of head-product design studies based on massive 3D head scan datasets. 3D scan datasets of the head, face and ear were coll...
Article
Full-text available
The world is ageing rapidly. Between 2000 and 2050, the number of people aged ≥65 will double as a proportion of the global population, from 7% to 16%, respectively. By 2050, for the first time in human history, there will be more older people than children (aged 0–14 years) in the population. More distinctive is the tremendous increase in the olde...
Chapter
Full-text available
O objetivo deste estudo foi determinar, por meio de uma revisão sistemática da literatura, se a dimensão de mobiliário escolar tem impacto negativo sobre algumas características físicas dos alunos. Os resultados globais mostram que cinco dos sete estudos revistos apresentam resultados positivos, isto é, evidências de que existe um efeito significat...
Article
Full-text available
The purpose of this study was to determine, using a systematic review, whether the design and/or dimensions of school furniture affect the students’ physical responses and/or their performance. Of the review studies, 64% presented positive results, i.e., proven effects; 24% presented negative effects or no change/effect; and the remaining 12% showe...
Article
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We estimated accommodation on multiple variables using a stepwise combination of pairs of data (percentile values), where each combined pair became an input for the succeeding step. The method is based on calculation of the covariance of intersecting sets using an average correlation value. Two different set-based definitions of accommodation are d...
Chapter
Full-text available
3D-scan en -printtechnieken maken het mogelijk om snel perfect passende medische hulpmiddelen te ontwikkelen. Bijvoorbeeld een kinderbeademingsmasker. Maar met de techniek alleen zijn we er helaas nog niet. Want wie gaat de prints maken? Is de techniek wel betaalbaar? En hoe zit het met privacy van de personen die hun gezicht laten scannen? Dit hoo...
Article
Full-text available
Background: Students are exposed to the first systematic tasks or activities that a human being carries out in his/her life while at school. In this workplace situation, school furniture is a key factor for the adoption of proper body posture. Objective: The aim of this paper was to observe and determine the potential mismatch between school fur...
Article
Full-text available
3D human body scan datasets have been collected and various techniques of post-processing, size and shape analysis, and applications in product design have been introduced. This paper is aimed to introduce techniques and cases of head-product design studies based on massive 3D head scan datasets. 3D scan datasets of the head, face and ear were coll...
Conference Paper
Full-text available
Falling of older persons resulting in injuries is a common problem (Hartholt, 2010). The annual probability to experience a fall for people aged 65 years and over is 30% (Hartholt, 2010, 2011). There is limited information about the location where fall injuries occur, but bathrooms commonly are believed to be a particularly hazardous location (Span...
Conference Paper
Full-text available
Designers integrate the use of anthropometric data in their design process to optimize the usability and functioning of a product while improving comfort and safety. Information regarding the size and shape of the human body are important when it comes to designing products in general, and especially where fit is essential such as helmets, ventilat...
Conference Paper
Full-text available
Since 2001 we teach students about 3D scanning and 3D printing because of a growing demand in society. This paper will show which methods were explored in the area of evaluating the fit of human-product-interaction at Industrial Design Engineering and how 3D scanning and 3Dprinting did make a difference. Ergonomics plays a big role in this process,...
Article
The present study reviews the scientific literature that describes the criteria equations for defining the mismatch between students and school furniture. This mismatch may negatively affect students' performance and comfort. Seventeen studies met the criteria of this review and twenty-one equations to test six furniture dimensions were identified....
Research
Full-text available
The Dutch Data Prize for 2014 has been awarded to DINED in the category of Exact & Technical Sciences.
Article
Full-text available
A healthy work-to-rest ratio during computer work can be an important part of successful preventive work-related upper limb disorders (WRULD) intervention. Existing break software applications designed to realise such a work-to-rest ratio often possess product features that limit their functionality. Most applications focus on physical relaxation b...
Article
Full-text available
Unlabelled: In order to create safer schools, the Chilean authorities published a Standard regarding school furniture dimensions. The aims of this study are twofold: to verify the existence of positive secular trend within the Chilean student population and to evaluate the potential mismatch between the anthropometric characteristics and the schoo...
Article
Full-text available
Most of the worldwide standards used for furniture selection suggest the use of the Stature of the school children, assuming that all the other anthropometric characteristics will also be appropriate. However, it is important to consider that students' growth differ with age. The aim of this study is to determine if Popliteal Height can be used as...
Conference Paper
Full-text available
Train toilets are perceived to be dirty and as a consequence train travelers rate the toilet as insufficient. While the train toilet is mainly used to urinate it is for men impossible to keep the train toilet clean without spilling urine outside the bowl while standing. This causes women to hover while urinating and as a result they add to the soil...
Article
The mismatch between students and school furniture is likely to result in a number of negative effects, such as uncomfortable body posture, pain, and ultimately, it may also affect the learning process. This study's main aim is to review the literature describing the criteria equations for defining the mismatch between students and school furniture...
Data
Full-text available
Generally speaking, about 1 man out of 12 (8%) and 1 woman out of 250 (0.4%) is born colour-blind (clinical term: defective or deficient colour vision). It is the most frequently occurring visual handicap, varying from bothersome to right down hazardous. Ironically, it is also the one least recognised as such, and since it is also an invisible hand...
Article
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Hoe wiskunde bijdraagt aan goed schoolmeubilair tijdens hun schoolloopbaan brengen kinderen veel tijd zittend door. in groep één van de basisschool doen ze dat op piepkleine stoeltjes, in hun eindexamenklas zijn dat stoelen van een volwassen maat. Hoe zorg je dat ze in elke klas goed en verantwoord zitten? Johan Molenbroek, universitair hoofddocent...