Physical Activity after Commitment Lotteries: Examining Long-Term Results in a Cluster Randomized Trial

Research output: Working paperDiscussion paperOther research output

Abstract

To overcome self-control difficulties, people can commit to their health goals by voluntarily accepting deadlines with consequences. In a commitment lottery, the winners are drawn from all participants, but can only claim their prize if they also attained their gym-attendance goals. In a 52-week, three-arm trial across six company gyms, we tested if commitment lotteries with behavioral economic underpinnings would promote physical activity among overweight adults. In previous work, we presented an effective 26-week intervention. In the present paper we analyzed maintenance of goal attainment at 52-week follow-up and the development of weight over time. We compared weight and goal attainment (gym attendance ≥ 2 per week) between three arms that –in the intervention period- consisted of (I) weekly short-term lotteries for 13 weeks; (II) the same short-term lotteries in combination with an additional long-term lottery after 26 weeks; and (III) a control arm without lottery-deadlines. After a successful 26-week intervention, goal attainment declined between weeks 27 and 52 in the long-term lottery arm, but remained higher than in the control group. Goal attainment did not differ between the short-term lottery arm and control arm. Weight declined slightly in all arms in the first 13 weeks of the trial and remained stable from there on. Commitment lotteries can support regular gym attendance up to 52 weeks, but more research is needed to achieve higher levels of maintenance and weight loss.
LanguageEnglish
Place of PublicationTilburg
PublisherCentER, Center for Economic Research
Number of pages29
Volume2018-006
StatePublished - 12 Feb 2018

Publication series

NameCentER Discussion Paper
Volume2018-006

Fingerprint

Weights and Measures
Maintenance
Self-Control

Keywords

  • Behavior Change
  • Physical Activity
  • prevention
  • Commitment Devices
  • Behavioral Economics
  • Deadlines

Cite this

van der Swaluw, K., Lambooij, M., Mathijssen, J., Schipper, M., Zeelenberg, M., Berkhout, S., ... Prast, H. (2018). Physical Activity after Commitment Lotteries: Examining Long-Term Results in a Cluster Randomized Trial. (CentER Discussion Paper; Vol. 2018-006). Tilburg: CentER, Center for Economic Research.
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abstract = "To overcome self-control difficulties, people can commit to their health goals by voluntarily accepting deadlines with consequences. In a commitment lottery, the winners are drawn from all participants, but can only claim their prize if they also attained their gym-attendance goals. In a 52-week, three-arm trial across six company gyms, we tested if commitment lotteries with behavioral economic underpinnings would promote physical activity among overweight adults. In previous work, we presented an effective 26-week intervention. In the present paper we analyzed maintenance of goal attainment at 52-week follow-up and the development of weight over time. We compared weight and goal attainment (gym attendance ≥ 2 per week) between three arms that –in the intervention period- consisted of (I) weekly short-term lotteries for 13 weeks; (II) the same short-term lotteries in combination with an additional long-term lottery after 26 weeks; and (III) a control arm without lottery-deadlines. After a successful 26-week intervention, goal attainment declined between weeks 27 and 52 in the long-term lottery arm, but remained higher than in the control group. Goal attainment did not differ between the short-term lottery arm and control arm. Weight declined slightly in all arms in the first 13 weeks of the trial and remained stable from there on. Commitment lotteries can support regular gym attendance up to 52 weeks, but more research is needed to achieve higher levels of maintenance and weight loss.",
keywords = "Behavior Change, Physical Activity, prevention, Commitment Devices, Behavioral Economics, Deadlines",
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van der Swaluw, K, Lambooij, M, Mathijssen, J, Schipper, M, Zeelenberg, M, Berkhout, S, Polder, J & Prast, H 2018 'Physical Activity after Commitment Lotteries: Examining Long-Term Results in a Cluster Randomized Trial' CentER Discussion Paper, vol. 2018-006, CentER, Center for Economic Research, Tilburg.

Physical Activity after Commitment Lotteries : Examining Long-Term Results in a Cluster Randomized Trial. / van der Swaluw, Koen; Lambooij, M.; Mathijssen, Jolanda; Schipper, M.; Zeelenberg, Marcel; Berkhout, S.; Polder, Johan; Prast, Henriette.

Tilburg : CentER, Center for Economic Research, 2018. (CentER Discussion Paper; Vol. 2018-006).

Research output: Working paperDiscussion paperOther research output

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T2 - Examining Long-Term Results in a Cluster Randomized Trial

AU - van der Swaluw,Koen

AU - Lambooij,M.

AU - Mathijssen,Jolanda

AU - Schipper,M.

AU - Zeelenberg,Marcel

AU - Berkhout,S.

AU - Polder,Johan

AU - Prast,Henriette

PY - 2018/2/12

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N2 - To overcome self-control difficulties, people can commit to their health goals by voluntarily accepting deadlines with consequences. In a commitment lottery, the winners are drawn from all participants, but can only claim their prize if they also attained their gym-attendance goals. In a 52-week, three-arm trial across six company gyms, we tested if commitment lotteries with behavioral economic underpinnings would promote physical activity among overweight adults. In previous work, we presented an effective 26-week intervention. In the present paper we analyzed maintenance of goal attainment at 52-week follow-up and the development of weight over time. We compared weight and goal attainment (gym attendance ≥ 2 per week) between three arms that –in the intervention period- consisted of (I) weekly short-term lotteries for 13 weeks; (II) the same short-term lotteries in combination with an additional long-term lottery after 26 weeks; and (III) a control arm without lottery-deadlines. After a successful 26-week intervention, goal attainment declined between weeks 27 and 52 in the long-term lottery arm, but remained higher than in the control group. Goal attainment did not differ between the short-term lottery arm and control arm. Weight declined slightly in all arms in the first 13 weeks of the trial and remained stable from there on. Commitment lotteries can support regular gym attendance up to 52 weeks, but more research is needed to achieve higher levels of maintenance and weight loss.

AB - To overcome self-control difficulties, people can commit to their health goals by voluntarily accepting deadlines with consequences. In a commitment lottery, the winners are drawn from all participants, but can only claim their prize if they also attained their gym-attendance goals. In a 52-week, three-arm trial across six company gyms, we tested if commitment lotteries with behavioral economic underpinnings would promote physical activity among overweight adults. In previous work, we presented an effective 26-week intervention. In the present paper we analyzed maintenance of goal attainment at 52-week follow-up and the development of weight over time. We compared weight and goal attainment (gym attendance ≥ 2 per week) between three arms that –in the intervention period- consisted of (I) weekly short-term lotteries for 13 weeks; (II) the same short-term lotteries in combination with an additional long-term lottery after 26 weeks; and (III) a control arm without lottery-deadlines. After a successful 26-week intervention, goal attainment declined between weeks 27 and 52 in the long-term lottery arm, but remained higher than in the control group. Goal attainment did not differ between the short-term lottery arm and control arm. Weight declined slightly in all arms in the first 13 weeks of the trial and remained stable from there on. Commitment lotteries can support regular gym attendance up to 52 weeks, but more research is needed to achieve higher levels of maintenance and weight loss.

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KW - Physical Activity

KW - prevention

KW - Commitment Devices

KW - Behavioral Economics

KW - Deadlines

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T3 - CentER Discussion Paper

BT - Physical Activity after Commitment Lotteries

PB - CentER, Center for Economic Research

CY - Tilburg

ER -

van der Swaluw K, Lambooij M, Mathijssen J, Schipper M, Zeelenberg M, Berkhout S et al. Physical Activity after Commitment Lotteries: Examining Long-Term Results in a Cluster Randomized Trial. Tilburg: CentER, Center for Economic Research. 2018 Feb 12, (CentER Discussion Paper).