For absolute velocity ( V abs ), the effect of group was highly significant (both P ≪0.0001), as was the effect of relative force ( F / F 0 ) (both P ≪0.0001), the z -transformation of force ( F / F 0 ) [ Z ( F / F 0 ) 2 ] ( P ≪0.0001), and the interaction between F / F 0 and group ( P ≪0.0001) ( Table 2 ).
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