Yamashita Ryo, Sato Shinji, Akase Ryoichi, Doi Tatsuo, Tsuzuku Shigeki, Yokoi Toyohiko, Otsuki Shingo, Harada Eisaku
Kumamoto Institute of Total Fitness, 6-8-1 Yamamuro, Kita-ku, Kumamoto, 860-8518, Japan.
Teikyo Heisei University, 2-51-4 Higashiikebukuro, Toyosima-ku, Tokyo, 170-8445, Japan.
BMC Public Health. 2021 Jan 21;21(1):188. doi: 10.1186/s12889-021-10175-3.
Financial incentives have been used to increase physical activity. However, the benefit of financial incentives is lost when an intervention ends. Thus, for this study, we combined social network incentives that leverage the power of peer pressure with financial incentives. Few reports have examined the impact of physical activity on social capital. Therefore, the main goal of this study was to ascertain whether a combination of two incentives could lead to more significant changes in physical activity and social capital during and after an intervention.
The participants were 39 older women over 65 years of age in Kumamoto, Japan. The participants were randomly divided into a financial incentive group (FI group) and a social network incentive plus financial incentive group (SNI + FI group). Both groups underwent a three-month intervention. Measurements of physical activity and social capital were performed before and after the intervention. Additionally, the effects of the incentives on physical activity and social capital maintenance were measured 6 months postintervention. The financial incentive group received a payment ranging from US$4.40 to US$6.20 per month, depending on the number of steps taken during the intervention. For the other group, we provided a social network incentive in addition to the financial incentive. The SNI + FI group walked in groups of three people to use the power of peer pressure.
A two-way ANOVA revealed that in terms of physical activity, there was a statistically significant interaction between group and time (p = 0.017). The FI group showed no statistically significant improvement in physical activity during the observation period. In terms of the value of social capital, there was no significant interaction between group and time.
Our results suggest that social network incentives, in combination with financial incentives, are more effective for promoting physical activity than financial incentives alone among older women and that these effects can continue after an intervention. In the meantime, further studies should be conducted on the effect of physical activity on social capital.
UMIN000038080 , registered on 09/22/2019 (Retrospectively registered).
经济激励措施已被用于增加身体活动。然而，当干预结束时，经济激励的益处就会丧失。因此，在本研究中，我们将利用同伴压力的社交网络激励与经济激励相结合。很少有报告研究身体活动对社会资本的影响。因此，本研究的主要目标是确定两种激励措施的组合是否能在干预期间及之后导致身体活动和社会资本产生更显著的变化。
参与者为日本熊本县39名65岁以上的老年女性。参与者被随机分为经济激励组（FI组）和社交网络激励加经济激励组（SNI+FI组）。两组均接受为期三个月的干预。在干预前后进行身体活动和社会资本的测量。此外，在干预后6个月测量激励措施对身体活动和社会资本维持的影响。经济激励组根据干预期间的步数每月获得4.40美元至6.20美元的报酬。对于另一组，除了经济激励外，我们还提供社交网络激励。SNI+FI组三人一组行走，以利用同伴压力。
双向方差分析显示，在身体活动方面，组和时间之间存在统计学上的显著交互作用（p=0.017）。FI组在观察期内身体活动没有统计学上的显著改善。在社会资本价值方面，组和时间之间没有显著的交互作用。
我们的结果表明，在老年女性中，社交网络激励与经济激励相结合比单独的经济激励更有效地促进身体活动，并且这些效果在干预后可以持续。与此同时，应该对身体活动对社会资本的影响进行进一步研究。
UMIN000038080，于2019年9月22日注册（追溯注册）。
