Validity of Perceived Discomfort as Postural Load Scale based on Maximum Holding Time

○cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http:// creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Objective: This study aims to investigate validity of perceived discomfort as postural load scale based on maximum holding time (MHT), and to develop two regression models for MHT and perceived discomfort depending varying postures and external load.

[1]  E N Corlett,et al.  The effects and measurement of working postures. , 1980, Applied ergonomics.

[2]  W Karwowski,et al.  The effects of neutral posture deviations on perceived joint discomfort ratings in sitting and standing postures. , 1993, Ergonomics.

[4]  Leonard O'Sullivan,et al.  Estimating upper limb discomfort level due to intermittent isometric pronation torque with various combinations of elbow angles, forearm rotation angles, force and frequency with upper arm at 90° abduction , 2007 .

[5]  P K Nag Endurance limits in different modes of load holding. , 1991, Applied ergonomics.

[6]  E N Corlett,et al.  The relation between discomfort and postural loading at the joints. , 1982, Ergonomics.

[7]  N Milner Modelling fatigue and recovery in static postural exercise. , 1986, Clinical biomechanics.

[8]  W Karwowski,et al.  LUBA: an assessment technique for postural loading on the upper body based on joint motion discomfort and maximum holding time. , 2001, Applied ergonomics.

[9]  Inseok Lee,et al.  Assessment of postural load for lower limb postures based on perceived discomfort , 2003 .

[10]  E. Heath Borg's Perceived Exertion and Pain Scales , 1998 .

[11]  M Hagberg,et al.  Electromyographic signs of shoulder muscular fatigue in two elevated arm positions. , 1981, American journal of physical medicine.

[12]  Jan Dul,et al.  Recommended maximum holding times for prevention of discomfort of static standing postures , 1997 .

[13]  Laura Punnett,et al.  Subjective Worker Assessments of Hand Tools Used in Automobile Assembly , 1989 .

[14]  Traci L. Galinsky,et al.  Psychophysically determined work durations for limiting shoulder girdle fatigue from elevated manual work , 1993 .

[15]  A Genaidy,et al.  Ranking of static non-neutral postures around the joints of the upper extremity and the spine. , 1995, Ergonomics.