Thus, breathing frequency was monitored breath-by-breath.
Breathing frequency (Fb) was calculated on a breath-by-breath basis as 60 divided by total breath time (that is, time between consecutive onsets of EAdi).
Here Sides's breath-by-breath account serves him well.
Volumetric oxygen consumption was measured using the breath-by-breath VMaxST oxygen consumption monitor.
During breath-by-breath data acquisition it appeared clearly that some competition between volatiles towards the chemical ionisation process occured.
Main Outcome Measures: Ventilatory oxygen uptake (VO2) and heart rate were measured by computerized breath-by-breath analysis and electrocardiography.
Main Outcome Measures: Breath-by-breath oxygen uptake, heart rate (HR), and walking speed were measured at a self-selected comfortable speed.
With this method, the CO is computed on breath-by-breath measurements of CO2 elimination.
Fluctuations of breath-by-breath data were minimized using a six-breath smoothing and consequent 30-s averaging.
Breath-by-breath analysis was performed on the recorded data by using Acqknowledge® software (Biopac Systems Inc., Goleta, CA, USA).
A breath-by-breath automated metabolic system (CPX, Medical Graphics, St .Paul, Minnesota, USA) was used to determine the VO2peak of each participant.
