Table 2.

Timeline for data collection

	Measurement time-point
Measures	Baseline	Week 2	Week 4	Week 8	Week 13	Week 26
Cigarettes per day (weekly)
Smoking cessation					X	X
Withdrawal symptoms	X	X	X	X	X	X
Cigarette cravings	X	X	X	X	X	X
Cigarette dependence	X				X	X
Subjective stress	X		X	X	X	X
Saliva cotinine	X				X	X
Cardiorespiratory fitness	X				X	X
Lung function	X				X	X
Body composition	X				X	X
Physical activity	X				X	X
Well-being	X				X	X
Motivation	X				X	X
Demographic information	X				X	X