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Table 3 Sensitivity of wheelchair model to set parameter changes

From: Manual wheelchair downhill stability: an analysis of factors affecting tip probability

  Parameter variation Percentage change in correct simulations
Torso inertia 50–150% of original 4.5%
Thigh inertia 50–150% of original 7.6%
Wheel unloading characteristics 50–150% of original 21.2%
Wheel loading characteristics 50–150% of original 6.1%
Rear wheel friction 50–150% of original 10.6%
Caster wheel friction 50–150% of original 1.5%
Position offset between user and base of backrest ±1.5 cm from original 6.1%
Position offset between user and top of backrest ±1.5 cm from original 10.6%