Introduction to Sports Biomechanics: Analysing Human Movement ...

MORE ON MOVEMENT PATTERNS – THE GEOMETRY OF MOTION
Figure 3.18 Superimposed phase planes for the hip (blue curve) and knee (black curve) joints in one running stride plus
definition of their phase angles (pah and pak) and the relative phase angle (rp).
Figure 3.19 Continuous relative phase for hip–knee angle coupling for one running stride, derived from Figure 3.18. The
dashed blue line indicates toe-off and the continuous blue line indicates touchdown.
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