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Table 1 Impulse delivered during a loading cycle with Method 1: using a constant time duration for every phase

From: Controlled manual loading of body tissues: towards the next generation of pressure algometer

Phase Ascending phase Peak phase Descending phase Totals
Peak force = f (constant) = f (constant) = f (constant) = f
Time = a (constant) = p (constant) = d (constant) = t (constant)
= a + p + d
Loading rate = f/a (variable) = zero (constant) = f/d (constant)  
Impulse = f*a/2 = f*p = f*d/2 = f*a/2 + f*p + f*d/2
= f(a + 2p + d)/2
= f(t + p)/2