Subjects	Traction Positions		Traction Force	Traction Angle
Subjects	Inclined	Sitting	Traction Force	Traction Angle
30A	○	Not tested	100N	10˚/20˚/30˚/40˚
30B	Not tested	○	130N	10˚/20˚/30˚/40˚
50A	○	○	140N	10˚/20˚/30˚/40˚
50B	○	○	150N	10˚/20˚/30˚/40˚
60A	○	○	140N	10˚/20˚/30˚/40˚
60B	Not tested	○	160N	10˚/20˚/30˚/40˚