(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.

Fig. 3. Mean ankle joint power (A) and knee joint power (B) of 10 subjects of one
full descending stride cycle for all four step-heights: decreased 50% (dotted
lines), standard (thin lines), increased 50% (thick lines) and increased 75%
(thick broken lines). Vertical lines indicate foot-contact times [lift-off
(LO) right, touch-down (TD) right and LO left] for all four step-heights,
whereas 0 and 100% of the stride cycle indicate TD of the left (analyzed)
foot. For clarity, standard deviations are omitted.