Table 2.

Breath frequency and signal peak-to-peak amplitude of tidal volume and airflow for different activities across all subjects.

	F
Activity	Average	SD	Average	SD	Average	SD
Sitting	15.71	4.18	0.13	0.06	0.19	0.10
Reading	10.77	2.51	0.20	0.10	0.19	0.08
Standing	14.42	4.45	0.10	0.04	0.14	0.07
Walking slowly	21.87	4.71	0.12	0.07	0.22	0.14
Walking fast	24.60	4.52	0.14	0.09	0.28	0.20
Laptop	19.38	3.78	0.14	0.05	0.23	0.11
Eat with hands	15.97	3.32	0.17	0.07	0.20	0.09
Eat with silverware	16.06	3.11	0.17	0.07	0.21	0.09
Walking outside	24.39	4.65	0.15	0.08	0.29	0.19
Resting	20.97	3.80	0.15	0.07	0.25	0.13
Smoking	16.49	2.63	0.27	0.13	0.36	0.20

Notes: The breath frequency F represents the number of breathing cycles over 1 minute; the peak-to-peak tidal volume is the average amplitude across all the breathing cycles for the corresponding activity; the peak-to-peak airflow is the average amplitude across all the breathing cycles for each activity.