Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Measurement variability in upper extremity posture among VDT users.

Authors
Ortiz-DJ; Marcus-M; Gerr-F; Jones-W; Cohen-S
Source
Appl Ergon 1997 Apr; 28(2):139-143
NIOSHTIC No.
00236212
Abstract
An analysis of measurement variability associated with determining upper extremity postures in video display terminal (VDT) operators was performed. Ulnar deviation, wrist extension, shoulder flexion, shoulder abduction, elbow angle and the gaze angle were measured on 19 VDT operators, 17 females, mean age 38.8 years, by two raters using manual goniometry. The measurements were made on six occasions: Monday, Wednesday, and Friday mornings and afternoons. The two raters were professional ergonomists experienced with measuring postures in the field who were blind to each other's measurements. Between subject and within subject variances were computed from the data and compared using an analysis of variance procedure. The overall means and their standard deviations for ulnar deviation, wrist extension, shoulder flexion, shoulder abduction, elbow angle, and gaze angle were 8.8+/-7.2, 31.2+/-13.9, 17.4+/- 12.1, 16.0+/-7.2, 105.0+/-11.6, and 8.9+/-6.8 degrees, respectively. Between subject variability was significantly larger than within subject variability for each postural angle. The mean angles measured for ulnar deviation, wrist extension, shoulder flexion, elbow angle, and gaze angle were similar to those measured previously by NIOSH in a study of communications workers using VDTs. No significant main effect for day of the week for any postural angle occurred. Time of day was significantly associated with mean gaze angle, the angle observed in the morning being slightly smaller than in the afternoon. No significant main time of day effect was seen for the other postural angles. The authors conclude that manual goniometry can provide information about upper extremity postures among VDT users that is useful for epidemiologic studies of upper extremity musculoskeletal disorders.
Keywords
NIOSH-Publication; NIOSH-Grant; Video-display-terminals; Office-workers; Ergonomics; Musculoskeletal-system-disorders; Injury-prevention; Posture; Author Keywords: manual goniometry; posture; musculoskeletal disorder; video display terminal
Contact
Epidemiology & Biomathematics Emory University 1599 Clifton Road, NE Atlanta, GA 30329
CODEN
AERGBW
Publication Date
19970401
Document Type
Journal Article
Funding Amount
2021838
Funding Type
Grant
Fiscal Year
1997
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-03160
Issue of Publication
2
ISSN
0003-6870
Priority Area
Disease and Injury: Musculoskeletal Disorders of the Upper Extremities
Source Name
Applied Ergonomics
State
GA
Performing Organization
Emory University, Atlanta, Georgia
TOP