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Structuring Financial Incentives to Increase Physical Activity

2. oktober 2019 opdateret af: Prof Ho Teck Hua, National University of Singapore

The purpose of this study is to evaluate the effectiveness of different structures of long term financial incentives on increasing physical activity performed by subjects, as measured by the number of steps walked per day.

Investigators are interested in studying whether physical activity increases during an intervention period (with incentives) and a post-intervention period (with no incentives).

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

The proposed study is a field experiment. Adults within the ages of 25 and 60 years of age, and with a body mass index of 22 or higher will be eligible to participate.

The study will consist of (1) a two-week baseline period, (2) a 36-week intervention period, and (3) a 12-week follow-up period.

At the beginning of the study, subjects will be given a wearable fitness device and their daily step count will be monitored for two weeks; this is the baseline period. After the two-week baseline period, the subjects will be randomly assigned to one of the five different conditions (Control, Gain, Loss, Gain Streak, or Loss Streak) and will be given the goal to increase their baseline step counts by 2,500 steps.

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HYPOTHESES -- Investigators expect the following:

  1. Loss Aversion: Subjects in the Loss treatment will achieve the goal on a greater number of days than subjects in the Gain treatment.
  2. Streak: Subjects in the Gain treatment will achieve the goal on a greater number of days than subjects in the Gain Streak treatment.
  3. Loss Streak: Subjects in the Loss treatment will achieve the goal on a greater number of days than subjects in the Loss Streak treatment. Whether subjects in the Loss Streak treatment will perform better or worse than subjects in the other two treatments will be investigated.

CONTRIBUTION -- Prior research has not examined the effect of a long term financial incentive (36 weeks) on individual behavior in achieving a goal. In this study, the investigators also examine two additional financial incentive structures: Gain Streak and Loss Streak. If the hypotheses are correct, the results have important implications for designing financial incentives to encourage good behavior and to encourage good habit formation across domains.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

620

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Singapore
      • Singapore, Singapore, 119077
        • National University of Singapore

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

25 år til 60 år (Voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Singapore citizens and permanent residents
  • Adults with BMI greater than 22
  • Ownership of a smartphone or tablet
  • Only one member per household can participate in the study

Exclusion Criteria:

  • Women who are pregnant or breast feeding, or who intend to become pregnant over next year
  • Subjects who are already participating in another physical activity program or study
  • Subjects who are unable to participate for a total of 1 year
  • Subjects who are unwilling to wear the fitness device
  • Subjects who already walk more than 10,000 steps a day (self-reported per-day-average over seven days)

  • Subjects who have any of the following health conditions:

    • high blood pressure
    • high cholesterol
    • heart attack
    • heart failure
    • stroke
    • chronic obstructive pulmonary disease
    • kidney disease
    • diabetes (type 2)

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Andet
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Dobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Ingen indgriben: Control
Subjects in the Control treatment are not given any financial incentive to achieve the goal.
Eksperimentel: Gain Treatment
Financial Incentive: Each subject in the Gain treatment will earn a certain amount of money for each day the goal is achieved. The money earned will be added to a virtual account that the subject has, and will be paid to the subject at the end of the intervention period.
Adfærdsmæssigt: Financial Incentive
Giving different structures of long term (36 weeks) financial incentives to increase physical activity
Eksperimentel: Loss Treatment
Financial Incentive: Each subject in the Loss treatment will be given a certain amount of money in his/her virtual account at the beginning of every week. For each day that the subject does not achieve the goal, a small portion of that money will be deducted from the virtual account. The balance that is left in the virtual account will be paid to the subject at the end of the intervention period.
Adfærdsmæssigt: Financial Incentive
Giving different structures of long term (36 weeks) financial incentives to increase physical activity
Eksperimentel: Gain Streak Treatment
Financial Incentive: Each subject in the Gain Streak treatment get an increasing amount of money added to his/her virtual account for every continuous day that they achieve the goal. The maximum cumulative amount per week is same as in the other treatment conditions. The payment is reset at the beginning of each week, or if the subject misses the goal on any day. The money in the virtual account will be paid to the subject at the end of the intervention period.
Adfærdsmæssigt: Financial Incentive
Giving different structures of long term (36 weeks) financial incentives to increase physical activity
Eksperimentel: Loss Streak Treatment
Financial Incentive: Each subject in the Loss Streak treatment will be given a certain amount of money in his/her virtual account at the beginning of every week. An increasing amount of money will be deducted for each consecutive day the subject does not achieve the goal. The payment is reset at the beginning of each week, or when the subject achieves the goal (i.e., deductions are reset when the streak is broken). The balance that is left in the virtual account will be paid to the subject at the end of the intervention period.
Adfærdsmæssigt: Financial Incentive
Giving different structures of long term (36 weeks) financial incentives to increase physical activity

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Step count goal -- Intervention
Tidsramme: 36-week intervention period following the baseline period.
Proportion of participant-days on which the goal (baseline +2,500 steps) was achieved during the intervention period.
36-week intervention period following the baseline period.
Change in mean daily steps -- Intervention
Tidsramme: 36-week intervention period following the baseline period.
Change in mean daily steps during the intervention period.
36-week intervention period following the baseline period.

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Step count goal -- Post-intervention
Tidsramme: 12-week post-intervention period.
Proportion of participant-days on which the goal (baseline +2,500 steps) was achieved during the post-intervention period.
12-week post-intervention period.
Change in mean daily steps -- Post-intervention
Tidsramme: 12-week post-intervention period.
Change in mean daily steps during the post-intervention period.
12-week post-intervention period.
Sleep Pattern -- Intervention
Tidsramme: 36-week intervention period following the baseline period.
Changes in sleep pattern (deep sleep, hours of continuous sleep) during the intervention period.
36-week intervention period following the baseline period.
Sleep Pattern -- Post-intervention
Tidsramme: 12-week post-intervention period.
Changes in sleep pattern (deep sleep, hours of continuous sleep) during the post-intervention period.
12-week post-intervention period.
Weight (in kilograms) Loss -- Intervention
Tidsramme: 36-week intervention period following the baseline period.
Drop in weight from baseline to the end of the intervention period.
36-week intervention period following the baseline period.
Weight (in kilograms) Loss -- Post-intervention
Tidsramme: 48-week period following the baseline period.
Drop in weight from baseline to the end of the post-intervention period.
48-week period following the baseline period.
Change in Waist Measurement (in inches) -- Intervention
Tidsramme: 36-week intervention period following the baseline period
Change in waist measurements from baseline to the end of the intervention period.
36-week intervention period following the baseline period
Change in Waist Measurement (in inches) -- Post-intervention
Tidsramme: 48-week period following the baseline period.
Change in waist measurements from baseline to the end of the post-intervention period.
48-week period following the baseline period.

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

National University of Singapore

Samarbejdspartnere

University of Pennsylvania

Efterforskere

  • Ledende efterforsker: Teck H Ho, PhD, National University of Singapore

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

9. oktober 2017

Primær færdiggørelse (Faktiske)

17. januar 2019

Studieafslutning (Faktiske)

30. januar 2019

Datoer for studieregistrering

Først indsendt

26. september 2017

Først indsendt, der opfyldte QC-kriterier

3. oktober 2017

Først opslået (Faktiske)

9. oktober 2017

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

4. oktober 2019

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

2. oktober 2019

Sidst verificeret

1. oktober 2019

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • SG-STEP

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

Investigators will not be storing or sharing any personal identifiers. All individual level data will be anonymized, and only anonymized data will be shared with other researchers, upon request.

IPD-delingstidsramme

After completion of all analysis. It will be made available in the supporting documentation.

IPD-delingsadgangskriterier

It will be made available in the supporting documentation.

IPD-deling Understøttende informationstype

  • STUDY_PROTOCOL
  • ICF
  • ANALYTIC_CODE

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Betingelser

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