Time-Resolved Events in Contracting Muscles

Following the pioneering, laboratory-based, time-resolved X-ray diffraction studies of muscle by H. E. Huxley and separately by G. F. Elliott (Elliott et al, 1965 1967 Huxley, 1972 Huxley and Brown, 1967 Huxley et al, 1965), a number of groups, including that of Huxley, have followed 

However, if these components cannot be resolved, it appears that the M3 reflection changes spacing as a peak at--1 13.4 A gradually reduces and a peak centered at 145.7 A develops. Fig. 19B shows that the intensity drop of M3 is very rapid (26 1 ms before T), but that the apparent spacing change is later (9 2 ms before T), showing that the increase of the 145.7 A peak is a later event than the decrease of the 143.4 peak. 

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