Effects of prismatic glasses including optometric correction on head and neck kinematics, perceived exertion and comfort during dental work in the oral cavity – A randomised controlled intervention

Lindegård, Agneta; Gustafsson, MK; Hansson, Gert–Åke

doi:10.1016/j.apergo.2011.05.011

Cited by 37 publications

(38 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To our knowledge most studies performed in this field have focused on the relationship between exposures and exertion and/or comfort [32] or on different exposures and symptoms [16,33,34]. However, another publication from the present cohort and a study investigating musculoskeletal symptoms among call-center workers have, congruent with the results from our study, reported a relationship between poor perceived overall comfort and musculoskeletal symptoms [17,24].…”

Section: Discussionsupporting

confidence: 84%

Perceived exertion, comfort and working technique in professional computer users and associations with the incidence of neck and upper extremity symptoms

Lindegård¹,

Wahlström

Hagberg

et al. 2012

BMC Musculoskelet Disord

View full text Add to dashboard Cite

Background The aim of this study was to investigate whether perceived exertion, perceived comfort and working technique is associated with the incidence of neck and upper extremity symptoms among professional computer users. Methods At baseline a self-administered questionnaire was distributed to 853 participants from 46 different work sites (382 men and 471 women) who, at baseline, had been free from neck and upper extremity symptoms during the preceding month. Work-related exposures, individual factors, and symptoms from the neck and upper extremities were assessed. Observations of working technique were performed by ergonomists using an ergonomic checklist. Incidence data were collected by means of 10 monthly questionnaires, asking for information on the occurrence of neck, shoulder and arm/hand symptoms. Perceived exertion was rated on a modified Borg RPE scale ranging from 0 (very, very light) to 14 (very, very strenuous). Perceived comfort was rated on a 9-point scale ranging from -4 (very, very poor) to +4 (very, very good) in relation to the chair, computer screen, keyboard, and computer mouse. Results The median follow up time was 10.3 months. The incidence of symptoms from the neck, shoulders and arm/hands were 50, 24 and 34 cases per 100 person years, respectively. Higher perceived exertion in the neck, shoulder or arm/hands was associated with an increased risk of developing symptoms in the corresponding body region. Moreover, a dose-response relationship between the level of exertion and the risk of developing symptoms was recorded for all three regions. There was an association between low comfort and an increased risk for neck symptoms, but not for shoulder and arm/hand symptoms, although a trend towards such an association (not statistically significant) could be seen. Working technique was, in this study, not associated with the risk of developing symptoms in any of the investigated body regions. Conclusion There was a strong association between high perceived exertion and the development of neck, shoulder, and arm/hand symptoms. Moreover, there was an association between poor perceived comfort and neck pain. Surveillance of computer users may include perceived exertion and comfort to target individuals at risk for neck and upper extremity symptoms.

show abstract

Section: Discussionsupporting

confidence: 84%

Perceived exertion, comfort and working technique in professional computer users and associations with the incidence of neck and upper extremity symptoms

Lindegård¹,

Wahlström

Hagberg

et al. 2012

BMC Musculoskelet Disord

View full text Add to dashboard Cite

show abstract

“…With the head positioned 30° anteriorly beyond a neutral position, there is a fourfold increase in the weight observed by the cervical spine . Clinically, this degree of flexion translates to a relative risk of greater than 2.0 for the development of neck pain . Though this finding oversimplifies the complex kinematics at work by neglecting lateral flexion and rotation, it underscores the considerable increase in force experienced by the cervical spine when the cranium is held in a flexed posture.…”

Section: Cervical Spine Biomechanicsmentioning

confidence: 91%

Ergonomics in microsurgery

Lakhiani

Fisher

Janhofer

et al. 2018

Journal of Surgical Oncology

View full text Add to dashboard Cite

There is a growing body of evidence to suggest that surgeon posture while operating contributes to cervical musculoskeletal strain, discomfort, and chronic pain. Microsurgeons may be particularly susceptible to this risk due to persistent neck flexion, long periods of static posture, and the use of heavy, high-power loupe magnification. Several techniques are thus presented that may help in obviating the cervicospinal repercussions of performing microsurgery.

show abstract

“…However, conducting sonography is associated with risk factors for work-related musculoskeletal disorders (WMSDs) such as awkward postures and sustained static forces [3][4][5]. Furthermore, sonography is a computer-intensive work task since both the examination and the ensuing analysis are performed on a computer, constituting yet another risk factor for WMSDs [6]. Further, high occurrence of WMSDs has been reported among sonographers over more than 25 years [7].…”

Section: Introductionmentioning

confidence: 99%

Neck and upper extremity pain in sonographers – a longitudinal study

Simonsen

Axmon

Nordander

et al. 2020

BMC Musculoskelet Disord

View full text Add to dashboard Cite

Background: Sonographers have reported a high occurrence of musculoskeletal pain for more than 25 years. Assessments of occupational risk factors have previously been based on cross-sectional surveys. The aim of this longitudinal study was to determine which factors at baseline that were associated with neck/shoulder and elbow/ hand pain at follow-up. Methods: A questionnaire was answered by 248 female sonographers at baseline and follow-up (85% of the original cohort). 208 were included in the analyses. Physical, visual, and psychosocial work-related conditions were assessed at baseline. Pain in two body regions (neck/shoulders and elbows/hands) was assessed at both baseline and follow up. Results: Pain at baseline showed the strongest association with pain at follow-up in both body regions [prevalence ratio (PR) 2.04; 95% confidence interval (CI) 1.50-2.76], for neck/shoulders and (PR 3.45; CI 2.29-5.22) for elbows/ hands. Neck/shoulder pain at follow-up was associated with inability of ergonomic adjustments at the ultrasound device (PR 1.25; CI 1.05-1.49), a high mechanical exposure index (PR 1.66; CI 1.09-2.52), and adverse visual conditions (PR 1.24; CI 1.00-1.54) at baseline. Moreover, among participants with no neck/shoulder pain at baseline, high job demands (PR 1.78; CI 1.01-3.12), and a high mechanical exposure index (PR 2.0; CI 0.98-4.14) predicted pain at follow-up. Pain in the elbows/hands at follow-up was associated with high sensory demands at baseline (PR 1.63; CI 1.08-2.45), and among participants without pain at baseline high sensory demands predicted elbow/hand pain at follow-up (PR 3.34; CI 1.53-7.31). Conclusion: Pain at baseline was the strongest predictor for pain at follow-up in both body regions. We also found several occupational factors at baseline that were associated with pain at follow-up: inability to adjust equipment, adverse visual conditions, a high MEI, high job demands and high sensory demands. These results point at a possibility to influence pain with better ergonomics.

show abstract

Effects of prismatic glasses including optometric correction on head and neck kinematics, perceived exertion and comfort during dental work in the oral cavity – A randomised controlled intervention

Cited by 37 publications

References 43 publications

Perceived exertion, comfort and working technique in professional computer users and associations with the incidence of neck and upper extremity symptoms

Perceived exertion, comfort and working technique in professional computer users and associations with the incidence of neck and upper extremity symptoms

Ergonomics in microsurgery

Neck and upper extremity pain in sonographers – a longitudinal study

Contact Info

Product

Resources

About