Trial Outcomes & Findings for Tying Devices as a Means of Increasing Exercise (NCT NCT01410812)

Results Overview

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

226 participants

Primary outcome timeframe

9 weeks

Results posted on

2018-12-19

Participant Flow

Participant milestones

Participant milestones
Measure	Suggested Tying Receive same treatments as control group, but instead of receiving cash they receive 4 iTunes audio novels for their own iPods. Further, they are prompted to try to listen to those novels only when exercising at the gym in order to increase their attendance. Suggested Tying Intervention: Participants receive 4 iTunes audio novels for their own iPods to listen to only at the gym	Forced Tying Receives same treatment as the control group. However, in addition to receiving the cash, they also receive 4 iTunes audio novels for a loaned iPod that they will only have access to at the gym. They are told they may only listen to these novels only when at the gym in order to increase their attendance. Forced Tying Intervention: Participants receive cash and also 4 iTunes audio novels for a loaned iPod accessible only at the gym to listen to only at the gym.	Control Control group of participants who do not receive any intervention but are weighed at the beginning and end of a 10 week period and receive weekly emails asking them about their exercise. They also receive the equivalent cash value of 4 iTunes audio novels Control: Receive weekly emails asking participants about their exercise and receive cash.
Overall Study STARTED	75	75	76
Overall Study COMPLETED	75	75	76
Overall Study NOT COMPLETED	0	0	0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Tying Devices as a Means of Increasing Exercise

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure	Suggested Tying n=75 Participants Receive same treatments as control group, but instead of receiving cash they receive 4 iTunes audio novels for their own iPods. Further, they are prompted to try to listen to those novels only when exercising at the gym in order to increase their attendance. Suggested Tying Intervention: Participants receive 4 iTunes audio novels for their own iPods to listen to only at the gym	Forced Tying n=75 Participants Receives same treatment as the control group. However, in addition to receiving the cash, they also receive 4 iTunes audio novels for a loaned iPod that they will only have access to at the gym. They are told they may only listen to these novels only when at the gym in order to increase their attendance. Forced Tying Intervention: Participants receive cash and also 4 iTunes audio novels for a loaned iPod accessible only at the gym to listen to only at the gym.	Control n=76 Participants Control group of participants who do not receive any intervention but are weighed at the beginning and end of a 10 week period and receive weekly emails asking them about their exercise. They also receive the equivalent cash value of 4 iTunes audio novels Control: Receive weekly emails asking participants about their exercise and receive cash.	Total n=226 Participants Total of all reporting groups
Age, Categorical <=18 years	0 Participants n=5 Participants	0 Participants n=7 Participants	0 Participants n=5 Participants	0 Participants n=4 Participants
Age, Categorical Between 18 and 65 years	75 Participants n=5 Participants	75 Participants n=7 Participants	76 Participants n=5 Participants	226 Participants n=4 Participants
Age, Categorical >=65 years	0 Participants n=5 Participants	0 Participants n=7 Participants	0 Participants n=5 Participants	0 Participants n=4 Participants
Sex: Female, Male Female	50 Participants n=5 Participants	51 Participants n=7 Participants	48 Participants n=5 Participants	149 Participants n=4 Participants
Sex: Female, Male Male	25 Participants n=5 Participants	24 Participants n=7 Participants	28 Participants n=5 Participants	77 Participants n=4 Participants

PRIMARY outcome

Timeframe: 9 weeks

Outcome measures

Outcome measures
Measure	Suggested Tying n=75 Participants Receive same treatments as control group, but instead of receiving cash they receive 4 iTunes audio novels for their own iPods. Further, they are prompted to try to listen to those novels only when exercising at the gym in order to increase their attendance. Suggested Tying Intervention: Participants receive 4 iTunes audio novels for their own iPods to listen to only at the gym	Forced Tying n=75 Participants Receives same treatment as the control group. However, in addition to receiving the cash, they also receive 4 iTunes audio novels for a loaned iPod that they will only have access to at the gym. They are told they may only listen to these novels only when at the gym in order to increase their attendance. Forced Tying Intervention: Participants receive cash and also 4 iTunes audio novels for a loaned iPod accessible only at the gym to listen to only at the gym.	Control n=76 Participants Control group of participants who do not receive any intervention but are weighed at the beginning and end of a 10 week period and receive weekly emails asking them about their exercise. They also receive the equivalent cash value of 4 iTunes audio novels Control: Receive weekly emails asking participants about their exercise and receive cash.
Average Weekly Gym Attendance From Baseline to Week 9	1.21 Average Weekly Gym Attendance Interval 1.05 to 1.37	1.42 Average Weekly Gym Attendance Interval 1.25 to 1.59	0.94 Average Weekly Gym Attendance Interval 0.78 to 1.1

SECONDARY outcome

Timeframe: 9 weeks

Population: Some of the participants failed to respond for this outcome measure.

Willingness to pay is measured as the dollar amount a participant would pay to be enrolled in a program such as the treatment. Participant who would pay more are said to be more willing to pay, as opposed to those who would pay less or not at all.

Outcome measures

Outcome measures
Measure	Suggested Tying n=71 Participants Receive same treatments as control group, but instead of receiving cash they receive 4 iTunes audio novels for their own iPods. Further, they are prompted to try to listen to those novels only when exercising at the gym in order to increase their attendance. Suggested Tying Intervention: Participants receive 4 iTunes audio novels for their own iPods to listen to only at the gym	Forced Tying n=69 Participants Receives same treatment as the control group. However, in addition to receiving the cash, they also receive 4 iTunes audio novels for a loaned iPod that they will only have access to at the gym. They are told they may only listen to these novels only when at the gym in order to increase their attendance. Forced Tying Intervention: Participants receive cash and also 4 iTunes audio novels for a loaned iPod accessible only at the gym to listen to only at the gym.	Control n=71 Participants Control group of participants who do not receive any intervention but are weighed at the beginning and end of a 10 week period and receive weekly emails asking them about their exercise. They also receive the equivalent cash value of 4 iTunes audio novels Control: Receive weekly emails asking participants about their exercise and receive cash.
Dollar Amount Participants Would Pay for Enrollment	4.77 Dollars Standard Deviation 7.24	6.01 Dollars Standard Deviation 8.31	9.87 Dollars Standard Deviation 14.55

Adverse Events

Suggested Tying

Serious events: 0 serious events

Other events: 0 other events

Deaths: 0 deaths

Forced Tying

Serious events: 0 serious events

Other events: 0 other events

Deaths: 0 deaths

Control

Serious events: 0 serious events

Other events: 0 other events

Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Katherine L. Milkman, Ph.D.

University of Pennsylvania

Phone: 215-573-9646

Email: [email protected]

Results disclosure agreements

Principal investigator is a sponsor employee
Publication restrictions are in place