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Figure 8


Fig. 8. Isometric force (mN, left ordinate) as a function of muscle stretch (mm, lower abscissa) and relative fibre length (top abscissa) in the middle leg extensor tibiae of nine individuals. Values for (A) single twitch (N=8), (B) 50 Hz (N=9) and (C) 200 Hz (N=9), see maximum values in Table 3. For comparison with other muscles, the right ordinate shows stress (N cm–2). The working range from 180° (fully stretched joint angle) to 30° (maximally flexed joint angle) is marked. Please note that the number for individual means can differ; for single twitch measurements 3≤N≤9, for 50 Hz and 200 Hz measurements 5≤N≤9.