Preliminary study of the pilot's workload during emergency procedures in helicopters air operations

Military air operations and law enforcement operations in helicopters are examples of activities that require high performance of the operator. This article aimed at presenting a preliminary analysis of data obtained in the initial study in order to validate the instruments and the research protocol that focuses on the analysis of the workload imposed on helicopter pilots in emergency situations. The research was conducted in an environment of real flight training and used the NASA-TLX Scale to assess the workload and an interview guide to obtain reports on the main tasks performed. Preliminary data obtained is related to the participation of 10 (ten) volunteer pilots with experience in different types of helicopters. Four scenarios involving helicopter emergency procedures of HB-350 "Squirrel" were outlined. For this article, the analysis used only the data regarding the Physical and Mental Demands of the NASA-TLX Scale. Preliminarily, the results indicate that the "time pressure" as a factor contributing to increase mental requirement in emergency situations in flight, and that this increase was reflected in the request of mental processes such as: identification of the breakdown, attention and monitoring parameters. Future steps include extending the sample and adding physiological tools to better understand the effects of these types of emergencies on pilot performance and flight safety.     

Contribution of mental workload to job stress in industrial workers

This study's central objective is to determine how several individual, organizational and ergonomic factors influence the relationship between job stress and mental workload for workers in an electronics company. A cross-sectional study was made as a test of hypotheses regarding that relationship. The sample is composed of 95 workers, of both sexes, from the electronics industry in the metropolitan zone of Guadalajara, Jalisco, Mexico. Ergonomic conditions were evaluated with the Ergonomic Evaluation List, stress was evaluated by administering the SWS-Survey to groups of subjects, and mental workload was evaluated with the NASA-TLX Workload Index. Using Cochran's and Mantel-Haenzsel statistics, the odds ratio for each of the independent variables was {e}stimated as a risk factor for job stress, and analysis was later conducted by means of logistic regression for those risks found to be significant. Of the 95 worker participants, 26.3% presented a high level of job stress and 17.9% of the workers were found to present high levels of mental workload. The results show that working hours, mental demand, temporal demand, and frustration when faced with a given task may be considered risk factors for job stress.     

Analysis of the workload of bank tellers of a Brazilian public institution

During the last decades there have been many changes in the banking sector organization. It has been also observed the mutual growing of musculoskeletal and mental disorders. This study investigated the workload of bank tellers at a Brazilian public institution. It was performed the Ergonomic Work Analysis (EWA). Three employees participated in this study. During the analysis process, three research instruments were applied: Inventory of Work and Risk of Illness, Yoshitake Fatigue Questionnaire and Nordic Musculoskeletal Questionnaire, beyond the realization of footage recordings and the self-confrontation. The results indicated the existence of an excess of workload on the evaluated workstations, mainly in relation to mental order constraints, that overlaps the physical aspects. Thereby it was found that the employees tend to adopt strategies trying to reduce the impacts of the excess of workload, in order to regulate it.     

Work organization, well-being and health in geriatric care

The objective of the present study was to explore the connection between the organization of work in geriatric care and factors which have been connected to job stress and burnout, i.e. exhaustion, mental workload, job satisfaction and communication. We also analyzed how these factors were related to employee visits to doctors during the previous 12 months due to various medical conditions. The study was a cross-sectional questionnaire distributed to all employees within nursing homes and geriatric hospital wards with 10 employees or more throughout Iceland. The total response rate was 80%. The majority of respondents, or 96%, were women (n = 1432), and the results are based on their answers. Our data show that there is a high correlation between mental exhaustion and the unsatisfactory organization of work. Mental exhaustion upon completing work shifts was more closely connected to the health outcomes studied than were the other work-related factors studied. This is especially true for chronic fatigue, depression and sleeping disorders. It is important that employers and managers notice the mismatches between work and workers that this study manifests. Employers and managers must also consider the organizational factors that are influential.     

Immune responses to low back pain risk factors

$\underline{Objective}$: Investigate effects of interactions between biomechanical, psychosocial and individual risk factors on the body's immune inflammatory responses. $\underline{Background}$: Current theories for low back pain causation do not fully account for the body's response to tissue loading and tissue trauma. $\underline{Methods}$: Two groups possessing a preference for the sensor or intuitor personality trait performed repetitive lifting combined with high or low mental workload on separate occasions. Spinal loading was assessed using an EMG-assisted subject-specific biomechanical model and immune markers were collected before and after exposure. $\underline{Results}$: Mental workload was associated with a small decrease in AP shear. Both conditions were characterized by a regulated time-dependent immune response making use of markers of inflammation, tissue trauma and muscle damage. Intuitors' creatine kinase levels were increased following low mental workload compared to that observed in Sensors with the opposite trend occurring for high mental workload. $\underline{Conclusions}$: A temporally regulated immune response to lifting combined with mental workload exists. This response is influenced by personality and mental workload.     

Construction of a survey to assess workload and fatigue among AMT operators in Mexico

Operators of machinery classified as Advanced Manufacturing Technology (AMT) are exposed to high levels of workload and fatigue. However, only few studies have been conducted on this topic in Hispanic-American countries workers. Several instruments be used to assess workload and fatigue; however, only few of them have been adapted to Spanish language. This paper reports on the development and validity testing of a survey instrument in Spanish, aiming to subjectively assess workload and fatigue among AMT operators in Mexico. Method: After an exhaustive literature review in search of already available measurement instruments, they were adapted for content and later translated into Spanish; a pilot test was conducted to evaluate validity and reliability; afterwards appropriate modifications were made to the testing instruments. Final version of the instrument was applied to a group of 121 operators of CNC lathes. Reliability was analyzed using KMO and Cronbach alpha indices. Results: For the assessment of workload, both NASA-TLX and ISTAS 21 methods were incorporated to the survey instrument. As for fatigue assessment tools, these were SOFI-S, FAS and OFER questionnaires. Results show KMO value and Cronbach alpha above 0.6.Conclusions. The survey instrument as designed, allows the collection of reliable and valid data regarding workload and fatigue among AMT operators in Mexico.     

DEFINING WHO WE ARE AND WHAT WE DO: CLINICAL PRACTIVE PATTERNS OF MARRIAGE AND FAMILY THERAPISTS IN MINNESOTA

The clinical practice patterns of a representative sample of marriage and family therapists (MFTs) were studied. AAMFT clinical members from Minnesota ( N = 76 ) were surveyed for demographic characteristics, educational beckground, and practice-related issues. subjects also reported empirical data from 119 treatment cases involving 351 clients, a first in the MFT field. Among the major findings were: (a) MFTs practic relatively short-term therapy with the average case involving 11 sessions over a 4-month period; (b) therapy with families (average of 8 sessions) and couples (10 sessions) is briefer than individual therapy (14 sessions); and (c) NFTs treat a wide range of serious problems. Overall, MFT clinical practice patterns were comparable to those of other established mental health professions.     

Analysis of mental workload of electrical power plant operators of control and operation centers

Electrical systems can be categorized as critical systems where failure can result in significant financial loss, injury or threats to human life. The operators of the electric power control centers perform an activity in a specialized environment and have to carry it out by mobilizing knowledge and reasoning to which they have adequate training under the terms of the existing rules. To reach this there is a common mental request of personnel involved in these centers due the need to maintain attention, memory and reasoning request. In this sense, this study aims to evaluate the Mental Workload of technical workers of the Control Centers of Electrical Energy. It was undertaken a research on operators control centers of the electricity sector in Northeast Brazil. It was used for systematic observations, followed by interview and application of the instrument National Aeronautics and Space Administration Task Load Index known as NASA-TLX. As a result there will be subsidies for an assessment of mental workload of operators, and a contribution to improving the processes of managing the operation of electric utilities and the quality of workers.     

Accountability Factors Associated with the Delivery of Mental Health Services to Children

This study describes a sample of children served in a community mental health center and identifies factors associated with the delivery of services to them. The data are from a 1993 sample. Results of the analysis indicate the number of sessions, total services and referrals are associated with the presence of treatment plans for children.     

Treating mental health problems in primary care: Discrepancies between therapist expectations and clients’ attendance

ABSTRACT

Models of collaborative primary health care were introduced in Ontario in 2005 with the goal of providing comprehensive care, including that of mental health, to patients. While the success of this model of health care delivered through Family Health Teams (FHT) has been established, evidence based guidelines to guide mental health therapists regarding the number of sessions needed to treat common issues such as depression and anxiety seen within this model is lacking. The goal of this study was to gain a better understanding of how therapists conducted therapy, including type of intervention, under a physician determined eight session cap. Questionnaires completed by the therapists after the first session and again when therapy ended, a focus group and a chart review were conducted over an eight month period involving a total of 147 patients. Several key findings were identified including the unanticipated outcome of a discrepancy between how many sessions were initially thought to be required by the mental health therapist compared to how many sessions were determined helpful by the patient. Conversely, it was also identified that eight sessions was insufficient to treat more severe mental health issues such as trauma. Such results suggest that the treatment of mental health issues within Family Health remains a little understood and explored issue, with the authors suggesting better ways of negotiating session caps reflective of mental health issues addressed within this model of care.     

Inclusion of people with disabilities in the production system of a footwear industry

This article presents a study on the inclusion of people with disabilities (mainly mental impairment) in the workforce of a shoe company. The items that could impact on the success of inclusion were identified, and this included employees and other individuals taking part in the process. The inclusion process identified the interests, likes and dislikes of each employee with disabilities and correlated these with the activities available in the company. The case study evaluated the quality of the inclusion through interviews, questionnaires and an assessment of production efficiency. The results showed that inclusion did not adversely affect production, and highlighted that staff with disabilities do their work correctly. According to all employees interviewed, the inclusion of staff with disabilities improved the relationship of the boss with all of the staff and also led to the work environment being enhanced. The final evaluation is that the company's policy of inclusion succeeded.     

Effects of physical and mental demands on shoulder muscle fatigue

Mental demands have been associated with increased risk of injuries; however, its influence on muscle fatigability remains unclear. The aim of this study was to investigate the interaction of mental workload and physical workload on muscle fatigability during repetitive shoulder work. Twelve young participants, balanced by gender, performed shoulder abduction exercises until exhaustions at three levels of physical workload (low (5% maximum voluntary contraction (MVC)), moderate (35% MVC), and high (55% MVC)) in the absence and presence of a mental arithmetic test. Endurance time and rate of strength decline were employed as indicators of muscle fatigue. Concurrent physical and mental processing was found to adversely decrease muscle endurance by ~25% at the moderate intensity level. Furthermore, concurrent demands were associated with faster rate of strength decline compared to the control, irrespective of the physical intensity level. Findings from the current study provide evidence of the adverse effects of mental workload on muscle capacity (i.e., endurance and fatigue). It is therefore important to consider potential changes in worker capacity with concurrent physical and cognitive demands before designing work tasks/products.     

Individual and environmental factors related to job satisfaction in people with severe mental illness employed in social enterprises

Objective: The purpose of this study was to enhance understanding of the impact of individual and environmental variables on job satisfaction among people with severe mental illness employed in social enterprises.Participants: A total of 248 individuals with severe mental illness employed by social enterprises agreed to take part in the study. Methods: We used logistic regression to analyse job satisfaction. A model with job satisfaction as the dependent variable, and both individual (occupational self-efficacy and severity of symptoms perceived) and environmental (workplace) factors (provision of workplace accommodations, social support from co-workers, organizational constraints) as well as external factors (family support) as predictors, was tested on the entire sample. Results: All findings across the study suggest a significant positive impact of both individual and environmental factors on job satisfaction. People with higher occupational self-efficacy who were provided with workplace accommodations and received greater social support were more likely to experience greater job satisfaction.Conclusions: These results suggest that certain features of social enterprises, such as workplace accommodations, are important in promoting job satisfaction in people with severe mental illness. Further studies are warranted to expand knowledge of the workplace features that support employees with severe mental illness in their work integration process.     

An Ecological Approach to Understanding Youth Violence: The Mediating Role of Substance Use

The authors tested an ecological model that posits mediating variables (substance use and mental health) in the association between ecological factors (family closeness, school closeness, and peer closeness) and youth violence in a sample of 4,783 adolescents. Model including substance use present significantly less total effect between ecological factors and youth violence than do models without substance use. Additional probing of significant mediation effect using the Sobel test was performed and suggested that substance use did function as a mediator in the hypothesized path. Considerations of adolescent violence should recognize the possible role of ecological factors and how their influence may vary by substance use.     

An Ecological Approach to Understanding Youth Violence: The Mediating Role of Substance Use

The authors tested an ecological model that posits mediating variables (substance use and mental health) in the association between ecological factors (family closeness, school closeness, and peer closeness) and youth violence in a sample of 4,783 adolescents. Models including substance use present significantly less total effect between ecological factors and youth violence than do models without substance use. Additional probing of significant mediation effect using the Sobel test was performed and suggested that substance use did function as a mediator in the hypothesized path. Considerations of adolescent violence should recognize the possible role of ecological factors and how their influence may vary by substance use.     

Gonadal decline-related manifestations in aging hospital doctors

Andropenic manifestations related to declining gonadal function were assessed in a group of aging hospital doctors (50–66 years) and were compared with those of a group of administrative personnel of similar age (50–64 years) and two groups of younger doctors (30–40 years) or other hospital employees (30–40 years). Evaluation included measurements of follicle stimulating hormone (FSH) luteinizing hormone (LH), sex hormone binding globulin (SHBG), thyroid stimulating hormone (TSH) and prolactin (PRL) concentrations and responses to a special questionnaire. Mean testosterone concentration in aging doctors (374 ± 86 ng/ml) was no different from that of hospital employees of the same age (361 ± 77). However, concentrations of LH, SHBG and PRL in the former group were significantly lower (p < 0.04, 0.01 and 0.004, respectively). Furthermore, the testosterone : LH ratio was higher in the aging doctors group (p < 0.001). Mean testosterone concentration in the combined groups of aging men was lower than that of the younger men (p < 0.00001). Andropenic manifestations related to sexual, physical and mental activity were markedly better in the group of aging doctors in comparison to aging hospital employees. By and large, it appeared that aging hospital doctors had a better physical and mental activity than aging employees and this may have been related to their better lifestyle conditions.     

Interaction between employees' physical load factors and early support at the workplace

Physical workload is a continuous problem, even in modern workplaces. The purpose of the survey was to determine the effect of support on employees' physical load factors at workplaces. Training, guidance and support were the main focus areas of the early support intervention, which aimed to enable supervisors to find weak signals of impaired ergonomics.The survey was carried out in the form of a controlled longitudinal study, and the material was gathered via a questionnaire in both 2008 and 2010 from two co-operative trade groups. The final sample was 301 intervention subjects and 235 control subjects, and the response rate was 45% in both groups. We applied factor analysis to reduce the number of items. The physical load factors' sum score consisted of six items. We used logistic regression in the statistical analysis.Encouragement to improve processes at the workplace increased the probability of positive change (i.e. decrease) in physical load factors. The same applied to working pace, if individuals could control it themselves. In contrast, workload and the support of supervisors had a reversed impact on workers' physical load factors. Focusing on promoting workers' ergonomics is still important in workplaces when aiming to decrease physical load factors.     

Family Roles as Moderators of the Relationship Between Schedule Flexibility and Stress

Employer initiatives that address the spillover of work strain onto family life include flexible work schedules. This study explored the mediating role of negative work–family spillover in the relationship between schedule flexibility and employee stress and the moderating roles of gender, family workload, and single‐parent status. Data were drawn from the 2008 National Study of the Changing Workforce, a nationally representative sample of working adults (N = 2,769). The results indicated that schedule flexibility was associated with less employee stress and that these associations were mediated by perceptions of negative work–family spillover. This study found the moderating relationships of gender, family workload, and single parenting in the relationships between schedule flexibility and negative work–family spillover and stress. Schedule flexibility had stronger relationships in reducing negative work–family spillover and stress among women, single parents, and employees with heavier family workloads. The findings provide empirical support for intervention efforts involving schedule flexibility to reduce workplace stress among employees with family responsibilities.     

A study of a multidimensional model of work–family conflict among Iranian employees

The majority of studies of the work–family interface have been carried out in Western societies. They also have some limitations in measuring conflict between work and family domains. This paper reports on a study of 387 male and female Iranian employees from a variety of organizations, using a six-dimensional model of work–family conflict (Carlson, Kacmar, & Williams, 2000) to assess both the nature and construct of conflict. The study used a questionnaire based on existing measures, translated from English to Persian and then back-translated to English. Using confirmatory factor analysis (CFA) the validity and cross validity of the model on employees and across gender was assessed. The final results of the analysis support the generalizability of the six-dimensional model of work–family conflict to the Iranian employees and across gender.