2016-01-01 12:00 - Messages

Association Between Cardiovascular Risk Factors and Carpal Tunnel Syndrome in Pooled Occupational Cohorts

Objective: The aim of the study was to ascertain if cardiovascular (CVD) risk factors are carpal tunnel syndrome (CTS) risk factors.
Methods: Analysis of pooled baseline data from two large prospective cohort studies (n?=?1824) assessed the relationships between a modified Framingham Heart Study CVD risk score both CTS and abnormal nerve conduction study prevalence. Quantified job exposures, personal and psychosocial confounders were statistically controlled. Odds ratio and 95% confidence intervals were calculated for individual risk scores.
Results: There was a strong relationship between CVD risk score and both CTS and abnormal nerve conduction study after adjustment for confounders, with odds ratios as high as 4.16 and 7.35, respectively. Dose responses were also observed.
Conclusions: In this workplace population, there is a strong association between CVD risk scores and both CTS and abnormal nerve conduction study that persisted after controlling for confounders. These data suggest a potentially modifiable disease mechanism.

Source: Hegmann, Kurt T.; Thiese, Matthew Steven; Kapellusch, Jay; Merryweather, Andrew S.; Bao, Stephen; Silverstein, Barbara; Wood, Eric M.; Kendall, Richard; Wertsch, Jacqueline; Foster, James; Garg, Arun; Drury, David L. Journal of Occupational & Environmental Medicine: January 2016, Volume 58, Issue 1, p. 87-93.

The Consequence of Combined Pain and Stress on Work Ability in Female Laboratory Technicians

A Cross-Sectional Study
Musculoskeletal pain and stress-related disorders are leading causes of impaired work ability, sickness absences and disability pensions. However, knowledge about the combined detrimental effect of pain and stress on work ability is lacking. This study investigates the association between pain in the neck-shoulders, perceived stress, and work ability. In a cross-sectional survey at a large pharmaceutical company in Denmark 473 female laboratory technicians replied to questions about stress (Perceived Stress Scale), musculoskeletal pain intensity (scale 0–10) of the neck and shoulders, and work ability (Work Ability Index). General linear models tested the association between variables. In the multi-adjusted model, stress (p < 0.001) and pain (p < 0.001) had independent main effects on the work ability index score, and there was no significant stress by pain interaction (p = 0.32). Work ability decreased gradually with both increased stress and pain. Workers with low stress and low pain had the highest Work Ability Index score (44.6 (95% CI 43.9–45.3)) and workers with high stress and high pain had the lowest score (32.7 (95% CI 30.6–34.9)). This cross-sectional study indicates that increased stress and musculoskeletal pain are independently associated with lower work ability in female laboratory technicians.

Source: Jay K, Friborg MK, Sjøgaard G, et al. International Journal of Environmental Research and Public Health, 2015; 12 (12): p. 15834-42.

Associations between Wage System and Risk Factors for Musculoskeletal Disorders among Construction Workers

Piece rate and performance based wage systems are common in the construction industry. Construction workers are known to have an increased risk of pain and musculoskeletal disorders (MSD). In this cross-sectional questionnaire study, we examined the association between wage system and (1) physical exertion, (2) time pressure, (3) pain, and (4) fatigue. The participants comprised 456 male Danish construction workers working on one of three different wage systems: group based performance wage, individually based performance wage, and time based wage system. The statistical analyses indicated differences between the wage systems in relation to physical exertion () and time pressure () but not to pain or fatigue. Workers on group based performance wage scored higher (i.e., worse) than workers on individual performance based wage and workers with an hourly/monthly wage. In conclusion, group performance based wage was associated with higher levels of physical exertion and time pressure. Accordingly, group performance based wage can be viewed as a factor that has the potential to complicate prevention of MSD among construction workers. Since performance based wage systems are common in many countries across the world, more attention should be paid to the health effects of these types of payment.

Source: Ajslev JZ, Persson R, Andersen LL. Pain Research and Treatment, 2015.

Motor control exercise for chronic non-specific low-back pain

Non-specific low back pain (LBP) is a common condition. It is reported to be a major health and socioeconomic problem associated with work absenteeism, disability and high costs for patients and society. Exercise is a modestly effective treatment for chronic LBP. However, current evidence suggests that no single form of exercise is superior to another. Among the most commonly used exercise interventions is motor control exercise (MCE). MCE intervention focuses on the activation of the deep trunk muscles and targets the restoration of control and co-ordination of these muscles, progressing to more complex and functional tasks integrating the activation of deep and global trunk muscles. While there are previous systematic reviews of the effectiveness of MCE, recently published trials justify an updated systematic review.

Source: Saragiotto BT, Maher CG, Yamato TP, Costa LOP, Menezes Costa LC, Ostelo RWJG, Macedo LG. Cochrane Database of Systematic Reviews 2016, Issue 1. http://dx.doi.org/10.1002/14651858.CD012004

Effets de la posture de travail sur les patrons musculaires de la région lombaire lors d’une tâche répétitive

En Amérique du Nord, la posture debout prolongée est largement utilisée dans les entreprises, alors que dans d'autres régions du monde, le travail s'effectue plutôt à partir de la position assise. Le travail en station debout prolongée a déjà été associé à divers symptômes comme la douleur lombaire et la fatigue généralisée. Des études récentes ont démontré une association entre la douleur lombaire en posture debout prolongée et des patrons de coactivation (activation coordonnée de paires de muscles) des muscles de la région lombo-pelvienne. Cependant, ces patrons n'ont jamais été mesurés pour d'autres postures de travail, ou lorsque la posture debout était accompagnée de gestes répétitifs des membres supérieurs.

Source: http://www.irsst.qc.ca/publications-et-outils/publication/i/100854

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