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Related Experiment Video

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Financial Incentives to Promote Physical Activity in Japan: A Rapid Review.

Koki Aoki1, Ichiro Kawachi2

  • 1The University of Tokyo, Japan.

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Summary

Low-cost financial incentives effectively boost physical activity and cut healthcare costs in Japan. However, long-term sustainability requires further investigation for effective health policy.

Keywords:
Japanbehavioral economicsfinancial incentivesphysical activitywalking promotion

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Area of Science:

  • Public Health
  • Health Economics
  • Behavioral Science

Background:

  • Financial incentives show promise for increasing physical activity, but evidence from non-Western countries is scarce.
  • Understanding individual behavioral responses and policy applications is crucial for effective implementation.

Purpose of the Study:

  • To synthesize evidence on financial incentive interventions for physical activity in Japan.
  • To evaluate individual behavioral outcomes and potential policy applications of these interventions.

Main Methods:

  • A rapid review systematically searched four databases (CiNii Articles, PubMed, Google Scholar, Ichushi Web) for English and Japanese studies.
  • Intervention characteristics were documented using the TIDieR checklist, and step count changes, healthcare cost savings, and return on investment (ROI) were analyzed.

Main Results:

  • Fourteen studies revealed that incentives like points or gift certificates (¥11-¥100/day) increased daily steps by 997 on average.
  • Interventions reduced annual medical expenditures by ¥28,425, achieving an average ROI of 5.67.
  • Effects were consistent across subgroups, but only one study reported sustained increases post-intervention.

Conclusions:

  • Low-cost financial incentives can effectively promote physical activity and reduce healthcare costs in Japan.
  • Further long-term and cost-effectiveness research is essential for designing sustainable health policies.