TABLE 3.
Results summary for the subjective and physiological measures
| β (95% CI ) | p-value | |
| Breathing comfort | ||
| Main effect of synchrony# | 0.542 (0.046–1.037) | 0.033 |
| Asynchronous first¶ | 0.25 (−0.627–1.127) | 0.223 |
| Synchronous first+ | −0.583 (−1.544–0.378) | |
| Breathing difficulty | ||
| Main effect of synchrony# | −0.5 (−1.064–0.064) | 0.080 |
| Asynchronous first¶ | −1.333 (−2.260– −0.407) | 0.221 |
| Synchronous first+ | −0.667 (−1.760–0.427) | |
| Agency | ||
| Main effect of synchrony# | 1.583 (0.335–2.832) | 0.014 |
| Asynchronous first¶ | −0.667 (−1.922–0.589) | 0.336 |
| Synchronous first+ | 1.167 (−1.285–3.618) | |
| Awareness | ||
| Main effect of synchrony# | 2.167 (1.068–3.266) | <0.0001 |
| Asynchronous first¶ | 0.167 (−0.894–1.227) | 0.064 |
| Synchronous first+ | 2 (−0.121–4.121) | |
| Control (Q2) | ||
| Main effect of synchrony# | 0.042 (−0.042–0.125) | 0.312 |
| Asynchronous first¶ | −3.000 (−3.135– −2.865) | 0.302 |
| Synchronous first+ | 0.083 (−0.080–0.246) | |
| Control (Q5) | ||
| Main effect of synchrony# | Did not converge because data were similar in both conditions | |
| Asynchronous first¶ | ||
| Synchronous first+ | ||
| Respiration rate | ||
| Main effect of synchrony# | −0.275 (−1.748–1.198) | 0.704 |
| Asynchronous first¶ | 23.346 (19.460–27.231) | 0.053 |
| Synchronous first+ | 2.685 (−0.041–5.410) | |
| Respiration rate variability | ||
| Main effect of synchrony# | −0.295 (−0.779–0.190) | 0.222 |
| Asynchronous first¶ | 4.594 (3.344–5.843) | 0.810 |
| Synchronous first+ | −0.114 (−1.082–0.854) | |
Subjective ratings were measured using a 7-point Likert scale with −3=strongly disagree; −2=disagree; −1=somewhat disagree; 0=neither agree nor disagree; 1=somewhat agree; 2=agree; and 3=strongly agree. #: mean difference between synchronous and asynchronous conditions, regardless of the sequence, and 95% CI estimated by the linear mixed model (p-value corresponds to the test of this difference being equal to zero); ¶: mean difference between synchronous and asynchronous conditions and 95% CI estimated by the linear mixed model for the experimental sequence “Asynchronous first” (p-value corresponds to the result of the interaction test); +: mean difference between synchronous and asynchronous conditions and 95% CI estimated by the linear mixed model for the experimental sequence “Synchronous first” (the p-value corresponds to the result of the interaction test).