From:  Evaluation of a digital fully-contactless optical device to quantify and record breathing pattern components at rest and after exercise

 Mean differences between the comparable methods for the changes in examined variables after exercise

Variableμ (SD)95% LOA (lower, upper)
RR (bpm)0.00 (0.05)–0.09, 0.09
Te (s)–0.03 (0.07)–0.18, 0.12
Ti/Ttot0.01 (0.02)–0.02, 0.04
Rcampi (arbitrary units)–0.14 (0.24)–0.60, 0.32
ABampi (arbitrary units)–0.05 (0.16)–0.37, 0.27
RCampi/ABampi–0.06 (0.21)–0.50, 0.38

95% LOA: 95% limits of agreement; ABampi: abdominal amplitude; bpm: breaths per minute; RCampi: ribcage amplitude; SD: standard deviation; RR: respiratory rate (expressed by bpm and the breath-by-breath analysis involved breath cycles during the whole recording period); Te: expiratory time; Ti: inspiratory time; Ttot: total breath cycle duration; μ: mean value