Level of distress among workers undergoing work rehabilitation for musculoskeletal disorders

Forced swim stress exacerbates inflammation-induced hyperalgesia and oxidative stress in the rat trigeminal ganglia

This study investigates the impact of combining psychophysical stress, induced by forced swim (FSS), with masseter inflammation on reactive oxygen species (ROS) production in trigeminal ganglia (TG), TRPA1 upregulation in TG, and mechanical hyperalgesia. In a rat model, we demonstrate that FSS potentiates and prolongs CFA-induced ROS upregulation within TG. The ROS levels in CFA combined with FSS group surpass those in the CFA-only group on days 4 and 28 post-treatment. FSS also enhances TRPA1 upregulation in TG, with prolonged expression compared to CFA alone. Furthermore, CFA-induced mechanical hyperalgesia is significantly prolonged by FSS, persisting up to day 28. PCR array analyses reveal distinct alterations in oxidative stress genes under CFA and CFA combined with FSS conditions, suggesting an intricate regulation of ROS within TG. Notably, genes like Nox4, Hba1, Gpx3, and Duox1 exhibit significant changes, providing potential targets for managing oxidative stress and inflammatory pain. Western blot and immunohistochemistry confirm DUOX1 protein upregulation and localization in TG neurons, indicating a role in ROS generation under inflammatory and stress conditions. This study underscores the complex interplay between psychophysical stress, inflammation, and oxidative stress in the trigeminal system, offering insights into novel therapeutic targets for pain management.

Australian physiotherapists' perceived frequency of contact with clients experiencing distress: A cross-sectional survey

BACKGROUND

Previous research suggests physiotherapists' perceived frequency of contact with clients experiencing psychological distress is common; however, there is significant variation in the frequency of such contact.

OBJECTIVE

The study aimed to 1) investigate Australian physiotherapists' perceived frequency of contact with clients experiencing various forms of psychological distress; 2) identify potential factors that predict perceived frequency of contact; and 3) explore physiotherapists' beliefs regarding their role and self-reported capability to identify and assess psychological distress.

METHODS

A nationwide online survey of 340 Australian physiotherapists was conducted, and the data were analyzed using descriptive analysis and regression analysis.

RESULTS

Physiotherapists' perceived frequencies of contact with psychologically distressed and severely distressed clients expressed as proportions of all clients seen each week were 36.1% and 15.6%, respectively. Factors related to the clinical setting were stronger predictors of the perceived frequency of contact (Cohen's f2 = 0.16) than factors related to the physiotherapists themselves (Cohen's f2 = 0.03). Despite believing that identifying psychological distress was within their scope of practice, the physiotherapists in the study felt that assessing and managing this distress fell outside or on the boundary of their scope of practice.

CONCLUSION

Australian physiotherapists frequently encounter clients they perceive to be experiencing psychological distress. Future research into physiotherapists' capability to assess and respond to client psychological distress, using non-self-reported measures, is required.

The impact of a workplace cardiovascular health screening programme 'Farmers Have Hearts' on health behaviour change among Irish farmers

BACKGROUND

Irish farmers are a high-risk group for cardiovascular disease (CVD) which imposes not only a risk to their health but has more far-reaching implications for occupational health and safety.

OBJECTIVE

This study assessed the impact of a workplace health screening and health behaviour change programme among a sub-group of male Irish farmers.

METHODS

Data were collected from male livestock farmers (n = 310) who attended health screenings at livestock marts. Participating farmers also received lifestyle advice to prompt health behaviour change. Health behaviour change was tracked by two phone questionnaires at Week 1 (n = 224) and Week 12 (n = 172). All data were entered into SPSS v22 and analysed using chi-square and regression techniques.

RESULTS

At Week 12, 48% reported having changed at least one health behaviour. The majority of farmers were referred to their GP and by Week 12, 32% had acted on this advice. Participants most in need of health behaviour change based on adverse health screening results were, paradoxically, the least likely to contemplate or engage in health behaviour change.

CONCLUSIONS

Findings demonstrate that whilst workplace health screenings can be a catalyst for behaviour change for some farmers, more follow-up supports are needed to encourage sustainable behaviour change.

Compensation benefits in a population-based cohort of men and women on long-term disability after musculoskeletal injuries: costs, course, predictors

OBJECTIVES

The aim of this study is to assess costs, duration and predictors of prolonged compensation benefits by gender in a population characterised by long-term compensation benefits for traumatic or non-traumatic musculoskeletal injuries (MSIs).

METHODS

This study examined 3 years of data from a register-based provincial cohort including all new allowed long-term claims (≥3 months of wage replacement benefits) related to neck/shoulder/back/trunk/upper-limb MSIs in Quebec, Canada, from 2001 to 2003 (13,073 men and 9032 women). Main outcomes were compensation duration and costs. Analyses were carried out separately for men and women to investigate gender differences. An extended Cox model with Heaviside functions of time was used to account for covariates with time-varying effects.

RESULTS

Male workers experienced a longer compensation benefit duration and higher median costs. At the end of follow-up, 3 years postinjury, 12.3% of men and 7.3% of women were still receiving compensation benefits. Effects of certain predictors (e.g., income, injury site or industry) differed markedly between men and women. Age and claim history had time-varying effects in the men's and women's models, respectively.

CONCLUSIONS

Knowing costs, duration and predictors of long-term compensation claims by gender can help employers, decision makers and rehabilitation specialists to identify at-risk workers and industries to engage them in early intervention and prevention programmes. Tailoring parts of long-term disability prevention and management efforts to men's and women's specific needs, barriers and vulnerable subgroups, could reduce time on benefits among both male and female long-term claimants.

Psychological distress and pain reporting in Australian coal miners

Background

Coal mining is of significant economic importance to the Australian economy. Despite this fact, the related workforce is subjected to a number of psychosocial risks and musculoskeletal injury, and various psychological disorders are common among this population group. Because only limited research has been conducted in this population group, we sought to examine the relationship between physical (pain) and psychological (distress) factors, as well as the effects of various demographic, lifestyle, and fatigue indicators on this relationship.

Methods

Coal miners (N = 231) participated in a survey of musculoskeletal pain and distress on-site during their work shifts. Participants also provided demographic information (job type, age, experience in the industry, and body mass index) and responded to questions about exercise and sleep quality (on- and off-shift) as well as physical and mental tiredness after work.

Results

A total of 177 workers (80.5%) reported experiencing pain in at least one region of their body. The majority of the sample population (61.9%) was classified as having low-level distress, 28.4% had scores indicating mild to moderate distress, and 9.6% had scores indicating high levels of distress. Both number of pain regions and job type (being an operator) significantly predicted distress. Higher distress score was also associated with greater absenteeism in workers who reported lower back pain. In addition, perceived sleep quality during work periods partially mediated the relationship between pain and distress.

Conclusion

The study findings support the existence of widespread musculoskeletal pain among the coal-mining workforce, and this pain is associated with increased psychological distress. Operators (truck drivers) and workers reporting poor sleep quality during work periods are most likely to report increased distress, which highlights the importance of supporting the mining workforce for sustained productivity.

Clinically significant weight gain 1 year after occupational back injury

OBJECTIVE

To examine the incidence of clinically significant weight gain 1 year after occupational back injury, and risk factors for that gain.

METHODS

A cohort of Washington State workers with wage-replacement benefits for back injuries completed baseline and 1-year follow-up telephone interviews. We obtained additional measures from claims and medical records.

RESULTS

Among 1263 workers, 174 (13.8%) reported clinically significant weight gain (≥7%) 1 year after occupational back injury. Women and workers who had more than 180 days on wage replacement at 1 year were twice as likely (adjusted odds ratio = 2.17, 95% confidence interval = 1.54 to 3.07; adjusted odds ratio = 2.40, 95% confidence interval = 1.63 to 3.53, respectively; both P < 0.001) to have clinically significant weight gain.

CONCLUSIONS

Women and workers on wage replacement for more than 180 days may be susceptible to clinically significant weight gain after occupational back injury.

Gender differences in personal and work-related determinants of return-to-work following long-term disability: a 5-year cohort study

OBJECTIVE

To assess the differential effect of personal and work-related psychosocial, physical and organizational determinants by gender on time to return-to-work (RTW) following long-term disability.

METHODS

Data come from a larger study conducted in the province of Quebec, Canada. A cohort of 455 adults on long-term disability due to work-related musculoskeletal disorders at the back/neck/upper limb was followed for 5 years through structured interviews and administrative databases. Left-truncated Cox regression modeling stratified by gender was used to assess time to a first partial or full RTW of at least 3 days.

RESULTS

Survival curves of time to RTW were similar between men and women on long-term disability (log-rank test p value = 0.920) but many personal and occupational factors influencing RTW differed by gender. Women's risk factors included older age (HR = 0.734--in 10 years unit), poor to very poor perceived economic status (HR = 0.625), working ≥40 h/week and having dependents (HR = 0.508) and awareness of workplace-based occupational health and safety program (HR = 0.598); higher gross annual income (in $10,000 s) was a facilitator (HR = 1.225). In men, being over 55 years old (HR = 0.458), poor perceived economic status (HR = 0.653), working ≥40 h/week and high perceived physical workload (HR = 0.720) and higher job insecurity (HR = 0.825) negatively influenced time to RTW. For both men and women, probabilities of not returning to work varied widely according to workers' specific profile of personal and occupational factors (high or low risk profile).

CONCLUSION

Results confirm the importance of gender-sensitive strategies to investigate RTW determinants from a gender perspective.

A biopsychosocial perspective on the management of work-related musculoskeletal disorders

This article provides an overview of current literature about workplace-related musculoskeletal disorders from a biopsychosocial perspective. The authors conclude that disability management and early intervention efforts can only be meaningful within the context of targeted interventions, including mechanisms for psychosocial screening. In addition, they suggest that return to work should be considered an integral, rather than superficial, contribution to the rehabilitative process.

Management of work-relevant upper limb disorders: a review

BACKGROUND

Upper limb disorders (ULDs) are clinically challenging and responsible for considerable work loss. There is a need to determine effective approaches for their management.

AIM

To determine evidence-based management strategies for work-relevant ULDs and explore whether a biopsychosocial approach is appropriate.

METHODS

Literature review using a best evidence synthesis. Data from articles identified through systematic searching of electronic databases and citation tracking were extracted into evidence tables. The information was synthesized into high-level evidence statements, which were ordered into themes covering classification/diagnosis, epidemiology, associations/risks and management/treatment, focusing on return to work or work retention and taking account of distinctions between non-specific complaints and specific diagnoses.

RESULTS

Neither biomedical treatment nor ergonomic workplace interventions alone offer an optimal solution; rather, multimodal interventions show considerable promise, particularly for occupational outcomes. Early return to work, or work retention, is an important goal for most cases and may be facilitated, where necessary, by transitional work arrangements. The emergent evidence indicates that successful management strategies require all the players to be on side and acting in a coordinated fashion; this requires engaging employers and workers to participate.

CONCLUSIONS

The biopsychosocial model applies: biological considerations should not be ignored, but psychosocial factors are more influential for occupational outcomes. Implementation of interventions that address the full range of psychosocial issues will require a cultural shift in the way the relationship between upper limb complaints and work is conceived and handled. Dissemination of evidence-based messages can contribute to the needed cultural shift.