Logo of trialsLink to Publisher's site
PMC full text:
Published online 2019 Oct 12. doi: 10.1186/s13063-019-3678-8

Fig. 2

Spirit figure.

CPM conditioned pain modulation,
HRV heart rate variability,
NRS-11 numerical rating scale (11 steps, 0–10),
SMS text messages,
SMT spinal manipulative therapy