Table 2.

Behavior change techniques’ effect in increasing physical activity included in each fitness tracker.

Behavior change techniques			Fitbit Flex 2	Huawei Band 2 Pro	Misfit Shine 2	Moov Now	Nokia Go	Polar A300
Behavior change techniques related to self-management strategies
	Antecedents
		Adding objects to the environment	✓a	✓	✓	✓	✓	✓
		Body changes	✓	✓	✓	✓	✓	✓
		Prompts/ or cues	✓	✓	✓	—b	✓	✓
		Goal setting (behavior)	✓	✓	—	✓	✓	✓
		Goal setting (outcome)	✓	—	✓	—	✓	—
		Graded tasks	—	—	—	✓	—	—
	Self-monitoring and self-evaluation
		Self-monitoring of behavior	✓	✓	✓	✓	✓	✓
		Self-monitoring of outcome(s) of behavior	✓	—	✓	—	✓	—
		Feedback on behavior	✓	✓	✓	✓	✓	✓
		Feedback on outcome(s) of behavior	✓	✓	✓	✓	✓	✓
		Discrepancy between current behavior and goal	✓	✓	✓	✓	✓	✓
	Self-delivery of consequences
		Social reward	✓	✓	—	✓	✓	✓
		Social incentive	✓	—	—	✓	✓	—
		Reward (outcome)	✓	—	✓	—	—	—
		Incentive (outcome)	✓	—	—	—	—	—
Behavior change techniques not related to self-management strategies
	Information about health consequences		✓	✓	—	—	✓	✓
	Information about emotional consequences		✓	—	—	—	✓	—
	Instruction on how to perform a behavior		✓	—	—	✓	—	—
	Demonstration of the behavior		✓	—	—	✓	—	—
	Behavior practice and rehearsal		—	—	—	—	✓	—
	Action Planning		—	—	—	—	✓	—
	Habit Formation		—	—	—	—	✓	—
	Credible Source		✓	✓	—	—	—	—
	Social Comparison		✓	—	✓	✓	✓	✓
	Social Support		—	—	—	—	✓	—
	Monitoring of emotional consequences		—	—	—	—	—	✓
Total			20	11	11	13	19	12

^aIndicates behavior change technique found in the fitness tracker.

^bIndicates behavior change technique not found in the fitness tracker.