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omist will have an undergraduate degree in psychology engineering design or health sciences and usually a master s degree or doctoral degree in a related discipline though some practitioners enter the field of human factors from other disciplines both m s and phd degrees in human factors engineering are available from several universities worldwide sedentary workplace edit contemporary offices did not exist until the 1830s 46 with wojciech jastrzębowski s seminal book on msdergonomics following in 1857 47 and the first published study of posture appearing in 1955 48 as the american workforce began to shift towards sedentary employment the prevalence of work related musculoskeletal disorders cognitive issues etc began to rise in 1900 41 of the us workforce was employed in agriculture but by 2000 that had dropped to 1 9 49 this coincides with an increase in growth in desk based employment 25 of all employment in 2000 50 and the surveillance of non fatal workplace injuries by osha and bureau of labor statistics in 1971 51 sedentary behavior requires a basal metabolic rate of 1 0 1 5 and occurs in a sitting or reclining position adults older than 50 years report spending more time sedentary and for adults older than 65 years this is often 80 of their awake time multiple studies show a dose response relationship between sedentary time and all cause mortality with an increase of 3 mortality per additional sedentary hour each day 52 high quantities of sedentary time without breaks is correlated to higher risk of chronic disease obesity cardiovascular disease type 2 diabetes and cancer 18 currently there is a large proportion of the overall workforce who is employed in low physical activity occupations 53 sedentary behavior such as spending long periods of time in seated positions poses a serious threat for injuries and additional health risks 54 unfortunately even though some workplaces make an effort to provide a well designed environment for sedentary employees any employee who is performing large amounts of sitting will likely experience discomfort 54 there are existing conditions that would predispose both individuals and populations to an increase in prevalence of living sedentary lifestyles including socioeconomic determinants education levels occupation living environment age as mentioned above and more 55 a study published by the iranian journal of public health examined socioeconomic factors and sedentary lifestyle effects for individuals in a working community the study concluded that individuals who reported living in low income environments were more inclined to living sedentary behavior compared to those who reported being of high socioeconomic status 55 individuals who achieve less education are also considered to be a high risk group to partake in sedentary lifestyles however each community is different and has different resources available that may vary this risk 55 oftentimes larger worksites are associated with increased occupational sitting those who work in environments that are classified as business and office jobs are typically more exposed to sitting and sedentary behavior while in the workplace additionally occupations that are full time have schedule flexibility are also included in that demographic and are more likely to sit often throughout their workday 56 policy implementation edit obstacles surrounding better ergonomic features to sedentary employees include cost time effort and for both companies and employees the evidence above helps establish the importance of ergonomics in a sedentary workplace yet missing information from this problem is enforcement and policy implementation as a modernized workplace becomes more technology based more jobs are becoming primarily seated leading to a need to prevent chronic injuries and pain this is becoming easier with the amount of research around ergonomic tools saving companies money by limiting the number of days missed from work and workers compensation cases 57 the way to ensure that corporations prioritize these health outcomes for their employees is through policy and implementation 57 in the united states there are no nationwide policies that are currently in place however a handful of big companies and states have taken on cultural policies to ensure the safety of all workers for example the state of nevada risk management department has established a set of ground rules for both agencies responsibilities and employees responsibilities 58 the agency responsibilities include evaluating workstations using risk management resources when necessary and keeping osha records 58 methods edit until recently methods used to evaluate human factors and ergonomics ranged from simple questionnaires to more complex and expensive usability labs 59 some of the more common human factors methods are listed below ethnographic analysis using methods derived from ethnography this process focuses on observing the uses of technology in a practical environment it is a qualitative and observational method that focuses on real world experience and pressures and the usage of technology or environments in the workplace the process is best used early in the design process 60 focus groups are another form of qualitative research in which one individual will facilitate discussion and elicit opinions about the technology or process under investigation this can be on a one to one interview basis or in a group session can be used to gain a large quantity of deep qualitative data 61 though due to the small sample size can be subject to a higher degree of individual bias 62 can be used at any point in the design process as it is largely dependent on the exact questions to be pursued and the structure of the group can be extremely costly iterative design also known as prototyping the iterative design process seeks to involve users at several stages of design to correct problems as they emerge as prototypes emerge from the design process these are subjected to other forms of analysis as outlined in this article and the results are then taken and incorporated into the new design trends among users are analyzed and products redesigned this can become a costly process and needs to be done as soon as possible in the design process before designs become too concrete 60 meta analysis a supplementary technique used to examine a wide body of already existing data or literature to derive trends or form hypotheses to aid design decisions as part of a literature survey a meta analysis can be performed to discern a collective trend from individual variables 62 subjects in tandem two subjects are asked to work concurrently on a series of tasks while vocalizing their analytical observations the technique is also known as co discovery as participants tend to feed off of each other s comments to generate a richer set of observations than is often possible with the participants separately this is observed by the researcher and can be used to discover usability difficulties this process is usually recorded citation needed surveys and questionnaires a commonly used technique outside of human factors as well surveys and questionnaires have an advantage in that they can be administered to a large group of people for relatively low cost enabling the researcher to gain a large amount of data the validity of the data obtained is however always in question as the questions must be written and interpreted correctly and are by definition subjective those who actually respond are in effect self selecting as well widening the gap between the sample and the population further 62 task analysis a process with roots in activity theory task analysis is a way of systematically describing human interaction with a system or process to understand how to match the demands of the system or process to human capabilities the complexity of this process is generally proportional to the complexity of the task being analyzed and so can vary in cost and time involvement it is a qualitative and observational process best used early in the design process 62 human performance modeling a method of quantifying human behavior cognition and processes a tool used by human factors researchers and practitioners for both the analysis of human function and for the development of systems designed for optimal user experience and interaction 63 think aloud protocol also known as concurrent verbal protocol this is the process of asking a user to execute a series of tasks or use technology while continuously verbalizing their thoughts so that a researcher can gain insights as to the users analytical process can be useful for finding design flaws that do not affect task performance but may have a negative cognitive effect on the user also useful for utilizing experts to better understand procedural knowledge of the task in question less expensive than focus groups but tends to be more specific and subjective 64 user analysis this process is based around designing for the attributes of the intended user or operator establishing the characteristics that define them creating a persona for the user 65 best done at the outset of the design process a user analysis will attempt to predict the most common users and the characteristics that they would be assumed to have in common this can be problematic if the design concept does not match the actual user or if the identified are too vague to make clear design decisions from this process is however usually quite inexpensive and commonly used 62 wizard of oz this is a comparatively uncommon technique but has seen some use in mobile devices based upon the wizard of oz experiment this technique involves an operator who remotely controls the operation of a device to imitate the response of an actual computer program it has the advantage of producing a highly changeable set of reactions but can be quite costly and difficult to undertake methods analysis is the process of studying the tasks a worker completes using a step by step investigation each task in broken down into smaller steps until each motion the worker performs is described doing so enables you to see exactly where repetitive or straining tasks occur time studies determine the time required for a worker to complete each task time studies are often used to analyze cyclical jobs they are considered event based studies because time measurements are triggered by the occurrence of predetermined events 66 work sampling is a method in which the job is sampled at random intervals to determine the proportion of total time spent on a particular task 66 it provides insight into how often workers are performing tasks which might cause strain on their bodies predetermined time systems are methods for analyzing the time spent by workers on a particular task one of the most widely used predetermined time system is called methods time measurement other common work measurement systems include modapts and most clarification needed industry specific applications based on pts are seweasy modapts and gsd 67 cognitive walkthrough this method is a usability inspection method in which the evaluators can apply user perspective to task scenarios to identify design problems as applied to macroergonomics evaluators are able to analyze the usability of work system designs to identify how well a work system is organized and how well the workflow is integrated 68 kansei method this is a method that transforms consumer s responses to new products into design specifications as applied to macroergonomics this method can translate employee s responses to changes to a work system into design specifications 68 high integration of technology organization and people this is a manual procedure done step by step to apply technological change to the workplace it allows managers to be more aware of the human and organizational aspects of their technology plans allowing them to efficiently integrate technology in these contexts 68 top modeler this model helps manufacturing companies identify the organizational changes needed when new technologies are being considered for their process 68 computer integrated manufacturing organization and people system design this model allows for evaluating computer integrated manufacturing organization and people system design based on knowledge of the system 68 anthropotechnology this method considers analysis and design modification of systems for the efficient transfer of technology from one culture to another 68 systems analysis tool this is a method to conduct systematic trade off evaluations of work system intervention alternatives 68 macroergonomic analysis of structure this method analyzes the structure of work systems according to their compatibility with unique sociotechnical aspects 68 macroergonomic analysis and design this method assesses work system processes by using a ten step process 68 virtual manufacturing and response surface methodology this method uses computerized tools and statistical analysis for workstation design 69 computer aided ergonomics this method uses computers to solve complex ergonomic problems weaknesses edit problems related to measures of usability include the fact that measures of learning and retention of how to use an interface are rarely employed and some studies treat measures of how users interact with interfaces as synonymous with quality in use despite an unclear relation 70 although field methods can be extremely useful because they are conducted in the users natural environment they have some major limitations to consider the limitations include usually take more time and resources than other methods very high effort in planning recruiting and executing compared with other methods much longer study periods and therefore requires much goodwill among the participants studies are longitudinal in nature therefore attrition can become a problem 71 see also edit for a topical guide see outline of ergonomics iso 9241 journal of occupational health psychology right to sit wojciech jastrzębowski 1799 1882 a polish pioneer of ergonomics a taxonomy of office chairs non fiction work by jonathan olivares references edit international ergonomics association global federation of human factors ergonomics societies retrieved 11 january 2026 what is ergonomics hfe international ergonomics association retrieved 12 january 2026 wickens gordon liu 1997 an introduction to human factors engineering pdf archived from the original pdf on 19 june 2018 retrieved 25 march 2018 1 2 iso 6385 defines ergonomics and the study of human factors similarly as the scientific discipline concerned with the understanding of interactions among humans and other elements of a system and the profession that applies theory principles and methods to design to optimize overall human performance what is ergonomics institute of ergonomics and human factors 9 september 2023 archived from the original on 30 july 2021 retrieved 4 april 2021 essentially yes...