Honestly, without any context at all to go on, it's quite impossible to be sure.

'gripping' is quite a specific word to use, and depending on the technical context, could be inappropriate --- other words like 'clamping', 'fixing' etc. could well be more appropriate.

'target forces' is difficult to interpret, but again, other possibilities exist.

and the idea of 'gripping FOR target forces' could be a little odd too; one might well expect to say 'gripping WITH a certain force', but the 'for' suggests a different idea, which may or may not be appropriate, depending on the context. For example, it might be some kind of clamp designed to grip sufficiently tightly to withstand a certain force; in that case, 'for' would make sense, tho' it's still a slightly odd way to express it.

I'm sorry, but without some kind of background context to go on, it really is a case of "how long is a piece of string?"

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Note added at 14 mins (2005-05-29 08:36:59 GMT)
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Ah, I see that maybe the underlying problem is that \'difference\' --- yes indeed, if the meaning is \'various\', then one would use \'different\' --- but again, it is not beyond the bounds of conceivability that there could be a \'force\' related to \'difference targets\', so only more context could tell you for sure...

Assuming this should read *gripping for different target forces*, I think it's taken from an ST dealing with physiology/neurology

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A PubMed search might help

Check this out:

Dev Med Child Neurol. 2000 Aug;42(8):545-53.
Detrimental neural control of precision grip lifts in children with ADHD.

The aim was to investigate the performance of children with attention-deficit-hyperactivity disorder (ADHD) in tasks involving motor-memory representations. A special grip object recorded forces generated by the fingertips during a precision grip-lift task. Common objects were lifted from a linear scale. Twenty-five boys with ADHD were evaluated and grouped according to the presence (ADHD+) or absence (ADHD) of movement dysfunction using the Movement Assessment Battery for Children (Henderson and Sugden 1992). Mean group ages were 11.4 years (range 9.0 to 11.0 years) and 11.7 years (9.0 to 15.6 years), respectively. They were compared to a control group of 25 age-matched boys, mean group age 11.8 years (range 9.0 to 13.0 years). Variability of motor performance was predominant in the ADHD+ group. Several of these participants presented a higher grip-force output during the gripping movement. They also had difficulties in adapting the motor output to target different weights, suggesting deficient anticipatory parameter control based on memory representations. The results suggest that in some children motor problems are due to detrimental neural control functions rather than core symptoms of ADHD.
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HTH ;-)
Linda