Abstract:
:The aims of the present work were: to calculate lifting energy consumption (LEC) in work activities designed to have a growing lifting index (LI) by means of revised NIOSH lifting equation; to evaluate the relationship between LEC and forces at the L5-S1 joint. The kinematic and kinetic data of 20 workers were recorded during the execution of lifting tasks in three conditions. We computed kinetic, potential and mechanical energy and the corresponding LEC by considering three different centers of mass of: 1) the load (CoML); 2) the multi-segment upper body model and load together (CoMUpp+L); 3) the whole body and load together (CoMTot). We also estimated compression and shear forces. Results shows that LEC calculated for CoMUpp+L and CoMTot grew significantly with the LI and that all the lifting condition pairs are discriminated. The correlation analysis highlighted a relationship between LEC and forces that determine injuries at the L5-S1 joint.
journal_name
Ind Healthjournal_title
Industrial healthauthors
Ranavolo A,Varrecchia T,Rinaldi M,Silvetti A,Serrao M,Conforto S,Draicchio Fdoi
10.2486/indhealth.2017-0075subject
Has Abstractpub_date
2017-10-07 00:00:00pages
444-454issue
5eissn
0019-8366issn
1880-8026journal_volume
55pub_type
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