Table II.

Study Protocol

Activities	Duration
Spirometer test	Self-paced
Bag calibration	Self-paced
Read an article	5 minutes
Walk on treadmill at self-paced slow speed	5 minutes
Walk on treadmill at self-paced fast speed	5 minutes
Unconstrained rest	5 minutes
Sit and smoke without talking	Self-paced
Talk on cell phone	5 – 10 minutes
Eat	Self-paced
Walk, talk, and smoke	Self-paced
Unconstrained activity	15 minutes
Stand, talk and smoke	Self-paced
Unconstrained activity	15 minutes
Walk and smoke without talking	Self-paced
Bag calibration	Self-paced
Free-Living	~ 21 hours
Bag calibration	Self-paced
Sit and smoke (with CReSS device) without talking	Self-paced