Note: A statistical problem in testing invariance of movement using the phase plane model.
Invariant positions on a phase plane of joint angular position and velocity have been proposed as a means by which interlimb coordination may be achieved. This note identifies a problem in the testing, using conventional statistics, of hypotheses derived using the phase plane model. A possible solution is proposed based on directional statistics. Conclusions regarding phase angle invariance, which are based on conventional statistics, must be viewed with some caution.
Burgess-Limerick
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R
Department of Human Movement Studies, The University of Queensland, St. Lucia 4072, Australia.
Abernethy
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B
Neal
R J
RJ