Loads on the lumbar spine during a work capacity assessment test

Many clinicians and employers utilise work-related assessment tools for the purposes of identifying whether or not the performance of a specific job exposes an individual to a heightened risk of developing a low back injury. However, research has shown that some of these tools have not been assessed for validity or reliability, and thus may not accurately assess the risk associated with a particular activity. An example of a test employed by some Australian private industries is the Work Capacity Assessment Test, which is a procedure that is commonly used to screen potential employees and evaluate those workers returning to the workplace following injury. This research was designed to simulate the lifting component of the Work Capacity Assessment Test and involved a series of lifts ranging from 2.5 kg to 22.5 kg. Six subjects performed this task, whilst being assessed using two-dimensional videography and surface electromyography. The two-dimensional kinematic data were input into the 4D WATBAK software to quantify the compression forces acting between L4 and L5 during each performance. Results of this study showed that spinal compression and paraspinal muscle activity increased incrementally from the 2.5 kg lift to the 22.5 kg lift, whilst abdominal muscle activity also increased across the lifts. This study demonstrated that lifting masses of 22.5 kg or more can produce loads on the spine that are considered potentially hazardous, when compared to safe lifting guidelines, and indicated that there is a clear concern for the use of such lifting tasks in the evaluation of workers following injury.     

Does team lifting increase the variability in peak lumbar compression in ironworkers?

Ironworkers frequently perform heavy lifting tasks in teams of two or four workers. Team lifting could potentially lead to a higher variation in peak lumbar compression forces than lifts performed by one worker, resulting in higher maximal peak lumbar compression forces. This study compared single-worker lifts (25-kg, iron bar) to two-worker lifts (50-kg, two iron bars) and to four-worker lifts (100-kg, iron lattice). Inverse dynamics was used to calculate peak lumbar compression forces. To assess the variability in peak lumbar loading, all three lifting tasks were performed six times. Results showed that the variability in peak lumbar loading was somewhat higher in the team lifts compared to the single-worker lifts. However, despite this increased variability, team lifts did not result in larger maximum peak lumbar compression forces. Therefore, it was concluded that, from a biomechanical point of view, team lifting does not result in an additional risk for low back complaints in ironworkers.     

Biomechanical analysis of loading/unloading a ladder on a truck

Loading/unloading a ladder on vehicles are frequent tasks and involve overhead handling that may expose workers to risk factors of shoulder musculoskeletal disorders. The objective of the present study was to evaluate posture, forces required and perceived exertion when loading and unloading the ladder on a utility truck. Thirteen male overhead line workers from an electric utility in Brazil participated in this study. Shoulder elevation angle was measured using inclinometers. The required force to load/unload the ladder was measured by dynamometer. Subjective assessment of the perceived exertion was recorded to compare the exertion reported during the test conditions to the field conditions. The task of loading/unloading the ladder presented risks of shoulder musculoskeletal disorders (MSDs) to workers because it requires high levels of force (approximately 60% of the maximal force) combined with overhead posture of the shoulders (more than 100° from the neutral posture). Age and height presented to interfere in biomechanical risks presented in load/unload task. There was no significant difference between the subjective exertion during the test conditions and handling the ladder in the field. Ergonomic intervention is recommended to reduce these risks for shoulder MSDs.     

Including the people with disabilities at work: a case study of the job of bricklayer in civil construction in Brazil

The aim of this paper is to present the results of the evaluation of the job of bricklayer in the construction industry to determine the profile of workers with disabilities who could perform this function and what adjustments are needed. The methods and techniques used in the field study were: direct observation of the activities and the environment, interviews with bricklayers on building sites, a video and photographic record of tasks being carried out to analyze the job of bricklayer, software resources were used. This study set out the disabilities most commonly caused by work accidents in the civil construction industry and simulated the conditions of the individuals to determine whether they could perform the activities of this function and what adaptations are needed. It was observed that workers with hearing impairments could perform activities without any change in the workplace and individuals who had had a leg or foot amputated need to use appropriate prostheses to perform the activities of the function. Thus, it was shown that the activity of professionals with experience in Ergonomics is essential since, by the activity of gathering data and analysing the physical, cognitive and organizational requirements of jobs and by collecting data on and analysing the functional capabilities of the worker with a disability, adaptations to jobs can be adequately defined.     

Universal design and accessibility: an approach of the influence of muscle strength loss in the risk of falls in the elderly

This study was conducted with older adults living in a long-stay institution in the city of Foz do Iguacu, Parana, Brazil with the objective of assessing the influence of muscle strength loss in the risk of falls. The sample consisted of 65 elderly who walk without the aid of support for locomotion, 37 women and 28 men, aged between 67 and 80 years. The risk of falls was assessed through the TUG test. To determine the handgrip strength, a hand dynamometer model Jamar ( was used, which provides the result in kg / force (kgf), being held only with the dominant hand. The results showed that in the last 12 months, only 32% of the elderly surveyed had no fall and the average handgrip strength was 24.32 ( 11.22 kgf; 40% had one fall and the average handgrip strength was 23.82 ( 10.18 kgf; 8% had two falls and the average handgrip strength was 19.48 ( 8.21 kgf and 20% had more than one fall and the average handgrip strength of 18.13 ( 7.33 Kgf., indicating that the force levels are statistically lower among elderly at high risk of falls (p> 0.05). It was concluded that the lower the force level, the greater the likelihood of falls. Thus, it is important to stress that due to the loss of muscle strength, all ergonomic hazards and architectural barriers must be removed so that older adults can perform their tasks more easily, with comfort and safety.     

Increasing older persons' employment in Finland: in search of a new strategy.

Using Finland as a case study, it is argued that early retirement will probably no longer be used on a large scale to reduce older-worker labor-force participation and unemployment among older workers. Instead, new strategies are needed to enhance the ability of older workers to remain productive and in the labor force, and to facilitate the reintegration of unemployed older persons back into working life. Both tasks require massive pioneering efforts. Reducing unemployment rates among older workers, particularly, requires completely new kinds of labor-market measures.     

Facilitators and barriers to family engagement and retention of young children in mental health care: A qualitative study of caregivers’ perspectives

This study examines facilitators and barriers that influence family engagement and retention of children in mental healthcare from the parent and caregiver perspective. Researchers recruited and interviewed parents and caregivers (n=18) from urban community health and early childcare centers. The study team analyzed the data and identified barriers to retention in care, including stigma, lack of integrated health care services,and a shortage of providers with the expertise in early childhood mental health care. Social workers, case managers, parent peers, and community support groups helped facilitate parent and caregiver engagement and retention of children in care. Education,community support programs, and integrated healthcare systems would improve access to quality early childhood mental health care.     

Occupational lifting tasks as a risk factor in low back pain: a case-control study in a Mexican population

The objective of this study was to quantify and assess whether lifting tasks in the workplace are a risk factor in lumbar spondyloarthrosis etiology. A case-control study was performed with 231 workers, 18-55 years old, insured by the Mexican Social Security Institute (IMSS, according to its designation in Spanish). A multivariate analysis using conditional logistical regression showed that lifting tasks, combined with driving tasks, are associated with this illness (OR = 7.3; 95% CI 1.7-31.4). The daily frequency of lifting as it interacts with work as a driver resulted in a greater risk (OR = 10.4; 95% CI 2.0-52.5). The load weight, daily task-hours and cumulative time showed a dose-response relationship. The attributable risk for lifting tasks was 0.83, suggesting that 83% of lumbar spondyloarthrosis development could be prevented if risk factors were eliminated by ergonomic redesign of the task.     

Self-efficacy and social support for psychological well-being of family caregivers of care recipients with dementia with Lewy bodies,Parkinson’s disease dementia,or Alzheimer’s disease

The study identified factors associated with depressive symptoms in family caregivers of persons with dementia with Lewy bodies, Alzheimer’s disease, or Parkinson’s disease dementia. An Internet-based survey generated 606 response sets. Regression analysis indicated that care recipients’ memory and behavioral problems, caregivers’ self-efficacy, grief, and tangible, emotional, and affectionate support were significantly associated with caregivers’ depressive symptoms. Self-efficacy mediated caregiver burden to improve psychological well-being. Social support mediated the association between caregiver grief and psychological well-being. Social workers can provide psychoeducational interventions to help caregivers to manage emotional distress and improve capacity to manage tasks related to the dementia.     

Increasing Older Persons' Employment in Finland

ABSTRACT

Using Finland as a case study, it is argued that early retirement will probably no longer be used on a large scale to reduce older-worker labor-force participation and unemployment among older workers. Instead, new strategies are needed to enhance the ability of older workers to remain productive and in the labor force, and to facilitate the reintegration of unemployed older persons back into working life. Both tasks require massive pioneering efforts. Reducing unemployment rates among older workers, particularly, requires completely new kinds of labor-market measures.     

Cognitive and organizational ergonomics in the transition of the new integrated center of control of an oil refinery: human reliability and administration of changes

The conception of a product is closely tied to its adaptation level to the users. In this view, designers are increasingly oriented to survey the needs and features of the users. This paper aims at developing a diagnosis of employees working in high-complexity activities in a petrochemical company, in light of the physical and operating changes in the Integrated Center of Control; assessing the reception sensibility to changes; assessing the cognitive pattern of the group; and making suggestions that might eliminate or minimize the difficulties in the transition process of the change, in order to reduce the adaptation period. The field of study comprised 111 production, transfer and storage operators, forming 5 groups of desktop activities. The stages of the study followed the following flow: survey of the prescribed tasks and organizational structure; Concentrated Attention test; application of the Work and Disease Risks Inventory (ITRA, Portuguese acronym); and structured psychological interview. The ITRA results pointed to a serious cognitive cost (3.83) for all five groups, this being the largest intervention focus. The items: division of task contents (3.52), social professional relationships (2.93), quality of the physical environment (2.91), physical cost (3.24), emotional cost (2.71), freedom of expression (3.77), professional fulfillment (3.41); experience and suffering (2.75), lack of recognition (2.18) and physical injuries (2.07) were considered critical. Meanwhile, social damages (1.64) and psychological injuries (1.35) are bearable. As to the Concentrated Attention test, most workers registered average level. In the individual interviews, workers showed that larger involvement in the process of physical, organizational and operational change in the desktops and on field works was required, as well as the follow up of implementations, so as to reduce the adaptation process and prevent rework (furniture, equipment, noise, form of communication with the area and training for the changes). As a result of the findings handed to the management and returned to the workers, several actions were implemented on ergonomic non-conformities found in the analysis. It is possible to prove the importance of the insertion of cognitive and organizational ergonomics in the building projects of new facilities for high-complexity activities in petrochemical plants.     

Attention during Visual Preference Tasks: Relation to Caregiving and Face Recognition

This research examined how caregiver experience (female primary caregiver or distributed caregiving with mom and dad) influenced 10‐, 14‐, and 16‐month‐olds’ visual preferences and attention toward internal facial features of female–male face pairs, and how these behaviors related to novelty preferences in a face recognition task and speed and accuracy on a visual search task. In the visual preference task, infants visually preferred male faces, regardless of caregiver experience. Despite similarities in visual preferences, infants’ attention toward females and males’ internal facial features was related for infants with distributed caregiving only. Infants’ performance across face processing tasks most often correlated for those with female primary caregivers. Results further our understanding of how infants with female primary caregivers display specialized processing of female faces, and how infants with distributed caregiving show similarities in their attention to female and male facial features.     

HARM overview and its application: some practical examples

The Hand Arm Risk Assessment Method (HARM 1.0) has been developed for occupational health officers to perform risk assessments of developing arm, neck or shoulder pain during hand arm tasks. The tool can also help in finding solutions for risk reduction and estimating their effect on the risk level. In this paper the status of affairs and the practical application of HARM is described. The usage of HARM is explained and illustrated with the risk assessment of a specific hand arm task. In addition, the experiences with the application of HARM by a stone factory in The Netherlands are described.     

Capturing temporal dynamics of fear behaviors on a moment‐to‐moment basis

Identifying patterns of fearful behaviors early and accurately is essential to identify children who may be at increased risk for psychopathology. Previous work focused on the total amount of fear by using composites across time. However, considering the temporal dynamics of fear expression might offer novel insights into the identification of children at risk. One hundred and twenty‐five toddlers participated in high‐ and low‐fear tasks. Data were modeled using a novel two‐step approach. First, a hidden Markov model estimated latent fear states and transitions across states over time. Results revealed children's behavior was best represented by six behavioral states. Next, these states were analyzed using sequence clustering to identify groups of children with similar dynamic trajectories through the states. A four‐cluster solution found groups of children varied in fear response and regulation process: “external regulators” (using the caregiver as a regulation tool), “low reactive” (low reaction to stimulus), “fearful explorers” (managing their own internal state with minimal assistance from the caregiver), and “high fear” (fearful/at‐caregiver state regardless of task). The combination of analytic tools enabled fine‐grained examination of the processes of fearful temperament. These insights may help prevention programs target behaviors that perpetuate anxious behavior in the moment.     

Measures of accountability and delegated discretion in activation work: lessons from the Norwegian Labour and Welfare Service

Activation work – the complex task of motivating, compelling and assisting marginalized citizens into labour market participation – pinpoints critical issues of discretion and accountability in the welfare state. Investigating accountability measures aimed at ensuring qualified discretionary judgements is therefore important. In this article, I discuss the reformed Norwegian Labour and Welfare Service and the accountability measures aimed at discretionary judgements of frontline workers. The conclusion is that, because activation tasks in the Norwegian frontline service imply professional discretion more than administrative discretion, structural measures aimed at restricting the discretionary space of frontline workers seem to have only limited impact. This is because the knowledge necessary to perform means – end judgements is insufficient. Rather, there seems to be a need for epistemic measures aimed at improving the knowledge base for professional discretionary reasoning.     

Age Similarities in Interpersonal Perception and Conversation Ability

Older adults tend to perform worse on emotion perception tasks compared to younger adults. How this age difference relates to other interpersonal perception tasks and conversation ability remains an open question. In the present study, we assessed 32 younger and 30 older adults’ accuracy when perceiving (1) static facial expressions, (2) emotions, attitudes, and intentions from videos, (3) and interpersonal constructs (e.g., kinship). Participants’ conversation ability was rated by coders from a videotaped, dyadic problem-solving task. Younger adults were more accurate than older adults perceiving some but not all emotions. No age differences in accuracy were found on any perception task or in conversation ability. Some but not all of the interpersonal perception tasks were related. None of the perception tasks predicted conversation ability. Thus, although the literature suggests a robust age difference in emotion perception accuracy, this difference does not seem to transfer to other interpersonal perception tasks or interpersonal outcomes.     

Comparison of the Rapid Entire Body Assessment and the New Zealand Manual Handling 'Hazard Control Record', for assessment of manual handling hazards in the supermarket industry

This is a case study comparing the use of two different assessment tools (Rapid Entire Body Assessment versus New Zealand Manual Handling Hazard Control Record) to assess, plan and implement changes in manual handling practices in the supermarket industry. Existing manual handling practices being used within these supermarkets were assessed using each of these tools. The most hazardous tasks were revised to improve work methods and reviewed again using both tools, to determine the usefulness and effectiveness of these tools. The process generated considerable discussion regarding the benefits and drawbacks of each tool. The usefulness of each tool appears dependant on the reason for assessment and the anticipated outcome. REBA may be more useful if specific ergonomic or biomechanical changes are being implemented to decrease risk of work-related injury (particularly if an objective numeric score is required for re-assessment following modifications, to determine their effectiveness). The New Zealand Code of Practice for Manual Handling 'Hazard Control Record' Risk Score analysis process lacks specificity and objectivity, however it is less reductionistic and takes into account many factors other than biomechanics and ergonomics. It directs the user toward implementing controls, which are thorough, multi-factorial and useful to control hazards relating to several other areas, including task, load, environment, people and management factors.     

Analyzing Web pages visual scanpaths: between and within tasks variability

In this paper, we propose a new method for comparing scanpaths in a bottom-up approach, and a test of the scanpath theory. To do so, we conducted a laboratory experiment in which 113 participants were invited to accomplish a set of tasks on two different websites. For each site, they had to perform two tasks that had to be repeated ounce. The data were analyzed using a procedure similar to the one used by Duchowski et al. [8]. The first step was to automatically identify, then label, AOIs with the mean-shift clustering procedure [19]. Then, scanpaths were compared two by two with a modified version of the string-edit method, which take into account the order of AOIs visualizations [2]. Our results show that scanpaths variability between tasks but within participants seems to be lower than the variability within task for a given participant. In other words participants seem to be more coherent when they perform different tasks, than when they repeat the same tasks. In addition, participants view more of the same AOI when they perform a different task on the same Web page than when they repeated the same task. These results are quite different from what predicts the scanpath theory.     

Health insurance portability: COBRA expansions and job mobility

This Issue Brief discusses continuation-of-coverage mandates under the Consolidated Omnibus Budget Reconciliation Act of 1985 (COBRA). It provides background information on health insurance portability and job mobility, data on the cost to employers of providing continuation of coverage to former employees, and a summary of empirical research on COBRA's effect on employee benefits and job mobility. COBRA coverage can be considered advantageous for most workers, as it allows continuation of the health insurance policy they had in place at work when they lose or leave a job. Although employees can be required to pay 102 percent of the premium for COBRA coverage, they can usually realize significant savings compared with the cost of purchasing the equivalent insurance policy in the private market. Many employers consider COBRA to be a costly mandate for three reasons. First, premiums collected from COBRA beneficiaries typically do not cover the costs of the health care services rendered. Second, COBRA imposes an additional administrative cost on employers. Third, many employers view the penalties for noncompliance as excessively large. According to a survey conducted by Charles D. Spencer & Associates, of the 10.2 percent of employees and dependents who were eligible for COBRA coverage in 1996, over 28 percent elected it. In addition, average employer claims costs for COBRA beneficiaries amounted to $5,591, compared with $3,332 for active employees in surveyed plans. According to Employee Benefit Research Institute estimates of the Survey of Income and Program Participation (SIPP), the COBRA population is much older than the general insured population. COBRA beneficiaries also have higher personal income than the general insured population, with this difference being almost entirely due to differences in retirement income. Any attempt to expand COBRA coverage, either through subsidies or by allowing workers to choose from plans with lower premiums, would likely result in increased employer health care costs. As a result, employers may consider various alternatives to reduce, shift, or eliminate the impact of this increased cost. One alternative would be to continue requiring active employees to share in the increased costs through higher employee contributions. A second alternative would be to reduce or eliminate health care benefits for active employees and/or future retirees and their families. A third alternative would be to reduce the size of the work force eligible for health insurance benefits. Finally, employers may pass additional costs on to workers or consumers.     

Gender differences in risk behaviour in financial decision-making: An experimental analysis

This paper examines whether gender differences in risk propensity and strategy in financial decision-making can be viewed as general traits, or whether they arise because of context factors. It presents the results of two computerised laboratory experiments designed to examine whether differences in risk preference and decision strategies are explained by the framing of tasks and level of task familiarity to subjects. The results show that females are less risk seeking than males irrespective of familiarity and framing, costs or ambiguity. The results also indicate that males and females adopt different strategies in financial decision environments but that these strategies have no significant impact on ability to perform. Because strategies are more easily observed than either risk preference or outcomes in day to day decisions, strategy differences may reinforce stereotypical beliefs that females are less able financial managers.