“…Many previous studies have summarized and compared the three techniques, based on their general characteristics including correspondence with a valid reference, scales for posture classification, main functions, association with MSDs, intra- and inter-observer repeatability/reliability, potential users, and exposure factors assessed such as postures or body regions, load/force, and movement frequency [ 5 , 15 , 16 , 17 , 19 , 20 ]. Some studies compared the three methods based on their assessment results [ 12 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ], and the relationship between the epidemiological data or subjective symptoms of MSDs and assessment results or scores [ 27 , 28 , 29 , 30 , 31 , 32 , 33 ].…”