Figure 5. Force depression following muscle shortening (FD) for shortening contractions with different shortening conditions.

Force depression was assessed as the difference in the steady-state isometric force following shortening and the corresponding isometric reference force. Voluntary force depression (dotted line) was similar to force depression obtained for electrically induced contractions (continuous line). Force depression, pooled for each shortening condition and across all subjects, was increased with increasing magnitudes of shortening (A) and decreasing speeds of shortening (B) (*P < 0.05). Means (± S.E.M.) across all subjects are presented.