Figure 1.

The comparison of in‐clinic and wearable measurements for heart rate and respiratory rate. (a,b) Correlation and (c,d) Bland Altman analyses for in‐clinic and wearable device measures for (a,c) heart rate and (b,d) respiratory rate. In‐clinic heart rate measurements were performed using the SpaceLab device, in‐clinic respiratory rate measurements were performed using the manual method; the BodyGuardian Device was used for wearable heart rate and respiratory rate measurements. Different symbols depict individual study subjects; blue color indicates time points taken prior to amphetamine challenge, red color indicates time points post‐amphetamine challenge. For heart rate bpm stands for beats per minute; for respitory rate bpm stands for breaths per minute.