Figure 4 | Scientific Reports

Figure 4

From: Standardized massage interventions as protocols for the induction of psychophysiological relaxation in the laboratory: a block randomized, controlled trial

Figure 4

Overview of the study procedure. HR heart rate monitoring, PSQ Perceived Stress Questionnaire. During the intervention, participants were randomly assigned to either a vagus nerve massage, a soft shoulder massage, or a resting control group. For subsequent heart rate variability analysis, the periods of interest were split up into 2.5 min segments as depicted in the figure to allow for a higher temporal resolution of heart rate variability changes.

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