Figure 2.
The following figures are an example of a single participant trial A. The summed vertical ground reaction forces(vGRF) under the right and left lower extremity(vGRFbilateal) and arms (vGRFarms) are shown. Task initiation and the end of the rising phase was determined from vGRFbilateral. Seat off, which determines the transition point between the preparation and rising phases, was determined from the seat force plate (vGRFseat). The rate of force development (RFDbilateral) was calculated as the slope from 25 to 50 % of the force value at seat off. The arms impulse was the area under the vGRFarms. B. The unilateral measures of vGRFinvolved/uninvolved were determined from the left and right force plates. For the preparation phase the RFD invovled/uninvolved was calculated similar to RFD bilateral. Symmetry during the rising phase was calculated as the area between the vGRFinvolved and uninvolved throughout the rising phase.