Work-A Journal of Prevention Assessment & Rehabilitation最新文献

Background: Militaries have historically utilised generic physical fitness tests to assess physical readiness, but there has been a recent shift to develop physical employment standards (PES) based on actual job demands.

Objective: The purpose of this investigation was to characterise the physical demands of critical tasks performed by Royal Australian Air Force (RAAF) personnel to inform PES development.

Methods: Job task analysis were performed for 27 RAAF trades. Criterion tasks were identified through a systematic approach involving workshops and field-observations. The identified tasks were assessed for dominant physical capacity and grouped into movement-based clusters. Psychophysiological measures were collected from personnel performing the tasks.

Results: Of 87 criterion tasks, 92% were characterised as manual handling dominant. Across these 87 tasks the principal physical capacities were: muscular strength (59%), muscular endurance (52%) and cardiorespiratory endurance (39%). The most common movement clusters were Lift to Platform (44%) and Lift and Carry (38%). Lift to Platform tasks required lifting to a median height of 1.32 m (1.20 -1.65 m) and a median mass of 25.0 kg (21.0 -28.9 kg) per person. Median carry mass was 25.0 kg (22.4 -36.1 kg) per person and distance was 26.0 m (17.5 -50.0 m). Median task mean 'Vdot;O2, HR and RPE were 1.8 L.min- 1 (1.5-2.2 L.min- 1), 137 b.min- 1 (120-144) and 13 (12-14).

Conclusions: The high proportion of manual handling criterion tasks emphasises the importance of these activities and the underlying physical capacities for RAAF personnel. Current fitness assessments are unlikely to predict job task performance.

Background: Customized employment (CE) is recognized in the Workforce Innovation and Opportunity Act (2014) as a strategy for promoting competitive integrated employment. However, the existing body of evidence supporting CE is mainly descriptive rather than experimental research.

Objective: This study examined the impact of CE on the employment outcomes, hours worked per week, and wages of transition-age youth with intellectual and developmental disabilities.

Method: The outcomes of transition-age youth participating in a CE intervention were compared to those receiving treatment-as-usual using a randomized controlled trial design.

Results: Participants receiving CE were significantly more likely to secure competitive integrated employment than controls who received treatment-as-usual. Participants in the intervention and control conditions earned similar wages. Participants in the control condition worked more hours per week than those in CE.

Conclusion: The findings from this study demonstrate the effectiveness of CE to assist transition-age youth with intellectual and developmental disabilities in obtaining competitive integrated employment, but future research is needed to examine factors impacting weekly hours and wages of participants in CE.

Background: Presenteeism-induced productivity loss is a global concern. This issue is equally serious in Japan. As a "super-aged society," maintaining and promoting Japanese employees' health is an urgent issue. The combination of these factors makes it imperative to identify the factors that affect presenteeism and clarify the mechanisms driving these factors in Japanese organizations.

Objective: Only a few extant studies address presenteeism as a performance variable. Presenteeism can create serious productivity losses in Japan, as it is a "super-aged society." Hence, this study aims to clarify the relationships between humble leadership, psychological safety, and presenteeism in Japanese organizations.

Methods: We hypothesized that psychological safety mediated the effect of humble leadership on presenteeism. The data of 462 employees from 11 companies were analyzed.

Results: The results supported our hypothesis. Additionally, leader humility, as perceived by the followers, was positively correlated with leaders' own psychological safety in their teams.

Conclusions: Our findings contribute to the existing literature by highlighting the roles of humble leadership and psychological safety in health and productivity management while accounting for cultural influences. The practical implications of our findings and future directions are also discussed.

Background: This study focuses on evaluating the exposure to whole-body vibration (WBV) and association of musculoskeletal disorders (MSDs) with various risk factors among dumper operators in the mining industry. Despite the issue's significance, prior research has been limited.

Objective: The study introduces a novel fuzzy-based approach for identifying, selecting, and prioritizing safety measures to mitigate MSD risks.

Methods: Data collection comprised face-to-face interviews, anthropometric measurements, Rapid Upper Limb Assessment (RULA) scoring for posture assessment, and the Nordic Musculoskeletal questionnaire for assessment of MSD prevalence. Multiple linear and logistic regression models were used to analyse the contributing risk factors to MSDs and WBV exposure. These risk factors formed the basis for a practical approach to select appropriate safety measures based on fuzzy based aggregation method of expert's judgment aimed at mitigating the risk of MSDs.

Results: The results revealed that the risk factors such as poor work posture, WBV exposure and poor seat design were significantly associated with neck (adjusted odds ratio aOR = 4.81), upper limb and shoulder (aOR = 3.28), upper back (aOR = 5.09), and lower back pain (aOR = 3.67) at p < 0.05. Using these factors to formulate safety measures to reduce MSD risk, the minimization of sharp turns and abrupt changes in elevation in designing the haul roads, scheduled maintenance practices, and ergonomic seat design were found as important safety measures in this study.

Conclusion: Our unique methodological approach in occupational health research could be highly beneficial for tailoring safety measures at the unit level with minimal effort.

Background: Work-related musculoskeletal disorders for upper limbs (UL-WMSDs) form a complex of occupational diseases common to many professions worldwide. UL-WMSDs are manifested in most cases by pain, resulting in musculoskeletal discomfort.

Objective: This research aimed to evaluate the perception of musculoskeletal discomfort in workers from the interior of the Brazilian states of Alagoas and Bahia through the construction of a scale to assess musculoskeletal discomfort for upper limb.

Methods: The discomfort assessment scale was constructed from self-reported pain symptoms by 420 workers from the inner regions of the Brazilian states of Alagoas and Bahia. The reliability and dimensionality of the collected data were analyzed by McDonald's Omega and exploratory factor analysis, respectively. Item Response Theory (IRT) was used to create parameters for the discomfort scale.

Results: The musculoskeletal discomfort metric was constructed from the workers' response with six levels (varying from minimum discomfort to maximum discomfort). At the lowest level of the scale, workers indicated symptoms in the shoulders and wrists were rare. At the highest level of the scale, daily pain symptoms are reported in all regions of the upper limbs. The shoulders are the last region to develop extreme pain symptoms.

Conclusion: The metric was created to present satisfactory psychometric properties and capable measurement of the workers' level of musculoskeletal discomfort based on self-reported pain symptoms. Therefore, the metric can support measuring discomfort, contributing to decisions that improve a healthier occupational environment for the worker.

Background: The sculpting craft must adopt awkward postures that lead to musculoskeletal disorders (MSDs).

Objective: This study investigated the prevalence of musculoskeletal discomfort (MD) and its associations with postural risk factors, demographics, and work characteristics among sculptors. They were determined the differences between MDs during the weeks of the study.

Methods: A longitudinal study was conducted; MD was investigated using the Cornell Musculoskeletal Discomfort Questionnaire (CMDQ). Posture was assessed using the Rapid Upper Limb Assessment method (RULA). Multivariate logistic regression (MLR) models analyzed associations with different factors. ANOVA was used to test for differences in MD prevalence.

Results: The analysis included 585 responses by body region. The prevalence of MD was high in the lower and upper limbs among sculptors (67.6%), with the lower back, upper arm, neck, and knees being the four most affected regions. Gender (female) (OR = 2.15), marital status (married) (OR = 1.80), health risk (obesity), the dual of a secondary job (OR = 1.94), job stress (OR = 2.10), duration of work (OR = 2.01), and difficulty keeping up with work (OR = 2.00) were significant predictors contributing to the occurrence of MD in different body regions. Only shoulder MD prevalence showed significant differences between study weeks.

Conclusions: Sculptors suffer from MD. Demographic and work characteristic factors influence MD prevalence. Postural training, improved adaptation of work organization, and intervention guidance on ergonomic risks may reduce the prevalence of MD and the risk of MSDs in this population.

Background: De Quervain's tenosynovitis is upper-limb disorder, more frequent in women. It is rarely recognized as an occupational disease.

Objective: In this paper we reported work related de Quervain's tenosynovitis in cow milker.

Methods: Ergonomic risk factors were assessed by utilizing assessment of repetitive tasks (ART) of the upper limbs method. Physical examination and imaging exams were used.

Results: We presented a 36-year-old female agricultural worker (workplace cow milker) exposed to work factors (forceful hand/wrist exertions, repetition, extreme postures) for 14 years. She was suffering the pain in the right hand, mainly near the thumb for few years. She was treated conservatively and surgically, however disability was permanent. Clinical examination showed slight edema of the right hand, increased palm's sweating. Patient had reduced range of movements and grip strength.

Conclusions: Report shows that work-related factors were strongly associated with diagnosed de Quervain's tenosynovitis. Hand function plays an essential role in carrying out activities of daily living and this disorder pose a relevant burden of disease. Exposure to biomechanical factors should be an important initial target for the prevention of De Quervain's tenosynovitis in the working population.

Background: Law enforcement is a profession of sedentary physical activity interspersed with physically demanding activity that requires high levels of fitness. It is imperative that agencies training law enforcement recruits maximise their fitness during their time at the academy.

Objective: The aim of this study was to investigate changes in physical fitness during academy training.

Methods: Retrospective data for 10 academy recruit classes, totalling 715 participants, were collected from a US law enforcement agency. The change in performance on two standardised tests were used as outcome measures. Comparisons were made between percentiles utilising one-way ANOVA and a linear mixed model (LMM).

Results: Overall, higher percentiles were found to have smaller improvements in physical fitness than lower percentiles. The results of the LMM support this supposition, showing that lower physical fitness scores resulted in greater improvements in a generalised fitness assessment (value = -0.45, standard error 0.02, p < 0.001) and an occupational assessment (value = -0.49, standard error = 0.02, p < 0.001).

Conclusion: The results of this study suggest that recruits with lower physical fitness will see greater improvements during academy training. This could be due to a ceiling effect for the more fit but may also be due to recruits of higher physical fitness being under trained during academy. Utilising ability-based training and prescribing an appropriate workload to recruits of higher fitness may improve overall recruit fitness upon graduation.

Background: Previous studies demonstrate that exclusive breastfeeding has positive long-term health effects on the mother and infant, but research has shown that nearly 50% of mothers do not breastfeed for the recommended amount of time.

Objective: This article systematizes previous quantitative research on the impact of work on breastfeeding practices to identify the factors that correlate to the cessation of breastfeeding in working mothers.

Methods: Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Statements, we performed a systematic review that screened PubMed, CINAHL, PsycINFO, and Academic Search Complete databases for articles relating to maternal employment and breastfeeding.

Results: Of the 13,106 articles assessed for eligibility, 21 studies met all requirements and were included in this systematic review. The 21 articles were divided into study type and methods, participant demographics, study outcomes, and additional factors that included stressors and stress levels, factors that increased or decreased rates of breastfeeding, and feeding methods. Articles outside of the United States were excluded due to differences in maternity leave policies of other countries impacting the data.

Conclusion: Cessation of breastfeeding and breastfeeding outcomes were seen to have a strong association with maternal employment, specifically with the policies and employer support in the workplace. Other factors such as race, level of education, and stress were also shown to relate to breastfeeding outcomes and are important to consider in future public health interventions and workplace policies.

Background: Mutual help among members is critical to the accomplishment of complex tasks in an organization. Helping behaviors are infectious, and employees learn to imitate their coworkers' helping behaviors through observation. However, whether coworker helping triggers imitation learning depends on observers' motivational attributions for coworker helping behaviors to some extent.

Objective: Based on attribution theory and approach-avoidance framework, this research explored the approach and avoidance-oriented emotional and behavioral consequences of observers' prosocial and impression management motivational attributions of coworker helping behavior.

Methods: An experimental study with 178 participants and a field study with 259 employees was conducted.

Results: The results revealed that observers attribute coworkers' helpfulness to prosocial motivation, which elicited observers' approach-oriented emotions (i.e., positive empathy) and behaviors (i.e., helping behavior) and reduced coworker exclusion, while impression-management motivation elicited observers' avoidance-oriented emotions (i.e., disgust) and behaviors (i.e., coworker exclusion) and reduced helping behavior.

Conclusion: The results suggest that prosocial motivational attributions and impression management motivational attributions are key factors in determining whether observers have approach- or avoidance-oriented emotions and behaviors toward coworker helping. Accordingly, individual employees and managers should focus on employees' motivation to help others in order to promote mutual support and harmony in the workplace.