General comfort may be defined as the “level of well-being” perceived by humans in a working environment. The state-of-the-art about evaluation of comfort/discomfort shows the need for an objective method to evaluate the “effect in the internal body” and “perceived effects” in main systems of comfort perception. Some medical studies show that each human joint has its own natural Rest Posture (RP); in this Rest Posture human muscles are completely relaxed or at minimum strain level: when it happens the geometrical configuration corresponds to the natural position of resting for Arms/Legs/Neck etc.. From this starting point, authors developed and build, through a wide experimental campaign, the postural-comfort curves for each Degree of Freedom (DOF) of human upper-limbs’ joints and a software, named CAMan, that is able to analyse a general posture and calculate a postural comfort index for the entire upper body. In this paper, this postural comfort analysis has been compared with the virtual simulation results coming from ANYBODY Software. A detailed study has been conducted on the upper body muscular activation during upper limbs movement with and without any load. Postures have been analysed both by ANYBODY and by CA-Man in order to correlate the postural (dis)comfort perception with the calculated muscular activity. Interesting findings about the relation between perceived comfort and limits of Joints’ Range of Motion (ROM) are shown.

A study on the correlation between the perceived comfort and the muscular activity, using virtual simulation techniques

N. Cappetti
Membro del Collaboration Group
;
A. Naddeo
Membro del Collaboration Group
;
2017-01-01

Abstract

General comfort may be defined as the “level of well-being” perceived by humans in a working environment. The state-of-the-art about evaluation of comfort/discomfort shows the need for an objective method to evaluate the “effect in the internal body” and “perceived effects” in main systems of comfort perception. Some medical studies show that each human joint has its own natural Rest Posture (RP); in this Rest Posture human muscles are completely relaxed or at minimum strain level: when it happens the geometrical configuration corresponds to the natural position of resting for Arms/Legs/Neck etc.. From this starting point, authors developed and build, through a wide experimental campaign, the postural-comfort curves for each Degree of Freedom (DOF) of human upper-limbs’ joints and a software, named CAMan, that is able to analyse a general posture and calculate a postural comfort index for the entire upper body. In this paper, this postural comfort analysis has been compared with the virtual simulation results coming from ANYBODY Software. A detailed study has been conducted on the upper body muscular activation during upper limbs movement with and without any load. Postures have been analysed both by ANYBODY and by CA-Man in order to correlate the postural (dis)comfort perception with the calculated muscular activity. Interesting findings about the relation between perceived comfort and limits of Joints’ Range of Motion (ROM) are shown.
2017
979-12-200-2249-1
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/4706654
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