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Fig. 1 | BMC Public Health

Fig. 1

From: Can a multi-level intervention approach, combining behavioural disciplines, novel technology and incentives increase physical activity at population-level?

Fig. 1

Weekly fitness tracker use between pre-Challenge and Challenge periods across waves. NSC=National Step Challenge. Pre-Challenge=period between registration and the start of the challenges and rewards. Challenge period=period during which step count-based rewards can be obtained (guaranteed or sure-win and lucky-draw). Δ=difference between pre-Challenge and Challenge days of tracker use per week

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BMC Public Health

ISSN: 1471-2458

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