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Lower Back Analysis

Hello everybody,

 

there is a scientific statement in " JACK TASK ANALYSIS TOOLKIT (TAT) TRAINING MANUAL " version 8.0/ Chapter 1: Lower Back Analysis Tool, which is in contrast to other similar statement in an article named  " Use of NIOSH equation inputs to calculate lumbosacral compression forces  "(J. R. POTVIN). 

 

You can compare these two statements with each other:

 

1. Statement from article:

 

NIOSH have recommended limits of 3400 N (NIOSH 1981, Waters et al. 1993) for most workers and 6400 N for some workers (NIOSH 1981).

 

2. Statement from Jack_TAT_Manual:

 

3400N is the NIOSH Back Compression Action Limit and represents a load where there is increased risk of lower back injury for some workers. 6400N is the NIOSH Back Compression Maximum Limit representing a load where there is an increased risk of lower back injury for most workers.

 

 

It seems so, the places of two words " some " and " most " should be replaced with each other! Is that right?

 

Sincerely yours,

 

 

 

2 REPLIES
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Accepted by topic author James1
‎02-22-2016 04:39 AM

Re: Lower Back Analysis

Hi James1,

 

The context of these two statements is slightly different, but in general agreement:

 

The TAT manual states that 3400N is the NIOSH Back Compression Action Limit and represents a load where there is increased risk of lower back injury for some workers. 6400N is the NIOSH Back Compression Maximum Limit representing a load where there is an increased risk of lower back injury for most workers. 

 

In the Potvin et al article, the statement is that 3400 is acceptable for most workers (only some will be at increased risk of low back injury) and and 6400 for some (most will be at risk of low back injury).

 

 

 

UlrichRaschke

Re: Lower Back Analysis

Hi,

 

you are right, thank you so much.

 

 

 

Sincerely yours,

Mohammad