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James Dowling

Angular displacement and acceleration data from an experiment that was reported in BIOMECHANICS X-B (ed:Bengt Jonsson) Human Kinetics Publishers, Champaign, IL. pp.1163-1167.

Accelerometer data

James Dowling has contributed angular displacement and acceleration data from an experiment that was reported in BIOMECHANICS X-B (ed:Bengt Jonsson) Human Kinetics Publishers, Champaign, IL. pp.1163-1167. 

The units of angular displacement are radians and for the acceleration are radians per second per second. The data were sampled at 512 samples per second and there are 600 samples in each file. The acceleration data was determined from three accelerometers that were averaged to yield a reference signal that was 69% noise-free as possible. The movement involves a horizontally rotating rigid body that swings forward until it impacts with a non-rigid barrier followed by a short period of no motion before it swings back. The experiment was designed to produce a nonstationary signal that included motion that was under the control of muscle (swing phases) as well as external forces (impact with the barrier).