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

Lindegård A, Wahlström J, Hagberg M, Vilhelmsson R, Toomingas A, Tornqvist EW - BMC Musculoskelet Disord (2012)

Bottom Line: 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.Working technique was, in this study, not associated with the risk of developing symptoms in any of the investigated body regions.Surveillance of computer users may include perceived exertion and comfort to target individuals at risk for neck and upper extremity symptoms.

View Article: PubMed Central - HTML - PubMed

Affiliation: Institute of Stress Medicine, Göteborg, Sweden. agneta.lindegard@vgregion.se

ABSTRACT

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.

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Kaplan-Meier survival curve for ratings of perceived exertion in the neck (unadjusted) for low (0-4), medium (5-7) and high (8-14) perceived exertion groups.
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Figure 3: Kaplan-Meier survival curve for ratings of perceived exertion in the neck (unadjusted) for low (0-4), medium (5-7) and high (8-14) perceived exertion groups.

Mentions: Our results showed that higher perceived exertion in the neck, shoulder or arm/hands was associated with an increased risk of developing symptoms in the corresponding body region (Table 2). Moreover, a dose-response relationship between the level of perceived exertion and the risk of developing symptoms was recorded for all three regions. In addition, participants in the high exertion group reported earlier onset of symptoms than did subjects reporting medium or low exertion in the neck (Figure 3). Regarding perceived comfort, 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 (Table 2).


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

Lindegård A, Wahlström J, Hagberg M, Vilhelmsson R, Toomingas A, Tornqvist EW - BMC Musculoskelet Disord (2012)

Kaplan-Meier survival curve for ratings of perceived exertion in the neck (unadjusted) for low (0-4), medium (5-7) and high (8-14) perceived exertion groups.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3362766&req=5

Figure 3: Kaplan-Meier survival curve for ratings of perceived exertion in the neck (unadjusted) for low (0-4), medium (5-7) and high (8-14) perceived exertion groups.
Mentions: Our results showed that higher perceived exertion in the neck, shoulder or arm/hands was associated with an increased risk of developing symptoms in the corresponding body region (Table 2). Moreover, a dose-response relationship between the level of perceived exertion and the risk of developing symptoms was recorded for all three regions. In addition, participants in the high exertion group reported earlier onset of symptoms than did subjects reporting medium or low exertion in the neck (Figure 3). Regarding perceived comfort, 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 (Table 2).

Bottom Line: 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.Working technique was, in this study, not associated with the risk of developing symptoms in any of the investigated body regions.Surveillance of computer users may include perceived exertion and comfort to target individuals at risk for neck and upper extremity symptoms.

View Article: PubMed Central - HTML - PubMed

Affiliation: Institute of Stress Medicine, Göteborg, Sweden. agneta.lindegard@vgregion.se

ABSTRACT

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 MeSH
Related in: MedlinePlus