Figure 6.

For each of the 19 subjects, the side and time point of occurrence in milliseconds for 132 popping sounds (red and blue arrows) and the total duration in milliseconds for 37 C1-2 rotatory HVLA thrust manipulations (black horizontal bars) following spectrogram analysis are depicted.

Dunning et al. BMC Musculoskeletal Disorders 2013 14:24   doi:10.1186/1471-2474-14-24
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