Trial Outcomes & Findings for Phone Coaching and Internet-delivered Weight Loss (NCT NCT03867981)
NCT ID: NCT03867981
Last Updated: 2024-07-17
Results Overview
Weight change was assessed using weight at baseline and 4 months
Recruitment status
COMPLETED
Study phase
NA
Target enrollment
452 participants
Primary outcome timeframe
4 months after start of weight loss program
Results posted on
2024-07-17
Participant Flow
Randomization occurred at baseline, but participants were not informed of their randomization assignment until 1 month. Those reporting a 1-month weight then went on to receive brief coaching, extended coaching, or no coaching based upon randomization assignment.
Participant milestones
| Measure |
Internet Weight Loss + Possibility of Brief Phone Coaching
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive a brief period (i.e., once/week for 3 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Brief phone coaching: Some individuals will receive 3 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss + Possibility of Extended Phone Coaching
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive an extended period (i.e., once/week for 12 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Extended phone coaching: Some individuals will receive 12 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss Only
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. No participants in this group will receive any phone coaching.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
|
|---|---|---|---|
|
Overall Study
STARTED
|
150
|
150
|
152
|
|
Overall Study
Reported Weight at 1 Month
|
143
|
148
|
146
|
|
Overall Study
Completed 4-month Assessment
|
134
|
135
|
126
|
|
Overall Study
COMPLETED
|
131
|
131
|
115
|
|
Overall Study
NOT COMPLETED
|
19
|
19
|
37
|
Reasons for withdrawal
Withdrawal data not reported
Baseline Characteristics
Phone Coaching and Internet-delivered Weight Loss
Baseline characteristics by cohort
| Measure |
Internet Weight Loss + Possibility of Brief Phone Coaching
n=143 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive a brief period (i.e., once/week for 3 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Brief phone coaching: Some individuals will receive 3 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss + Possibility of Extended Phone Coaching
n=148 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive an extended period (i.e., once/week for 12 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Extended phone coaching: Some individuals will receive 12 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss Only
n=146 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. No participants in this group will receive any phone coaching.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
|
Total
n=437 Participants
Total of all reporting groups
|
|---|---|---|---|---|
|
Age, Continuous
|
52.2 years
STANDARD_DEVIATION 11.5 • n=5 Participants
|
50.7 years
STANDARD_DEVIATION 10.9 • n=7 Participants
|
48.5 years
STANDARD_DEVIATION 11.4 • n=5 Participants
|
50.8 years
STANDARD_DEVIATION 11.4 • n=4 Participants
|
|
Sex: Female, Male
Female
|
101 Participants
n=5 Participants
|
101 Participants
n=7 Participants
|
103 Participants
n=5 Participants
|
305 Participants
n=4 Participants
|
|
Sex: Female, Male
Male
|
42 Participants
n=5 Participants
|
47 Participants
n=7 Participants
|
43 Participants
n=5 Participants
|
132 Participants
n=4 Participants
|
|
Ethnicity (NIH/OMB)
Hispanic or Latino
|
15 Participants
n=5 Participants
|
18 Participants
n=7 Participants
|
23 Participants
n=5 Participants
|
56 Participants
n=4 Participants
|
|
Ethnicity (NIH/OMB)
Not Hispanic or Latino
|
128 Participants
n=5 Participants
|
130 Participants
n=7 Participants
|
123 Participants
n=5 Participants
|
381 Participants
n=4 Participants
|
|
Ethnicity (NIH/OMB)
Unknown or Not Reported
|
0 Participants
n=5 Participants
|
0 Participants
n=7 Participants
|
0 Participants
n=5 Participants
|
0 Participants
n=4 Participants
|
|
Race (NIH/OMB)
American Indian or Alaska Native
|
0 Participants
n=5 Participants
|
0 Participants
n=7 Participants
|
0 Participants
n=5 Participants
|
0 Participants
n=4 Participants
|
|
Race (NIH/OMB)
Asian
|
2 Participants
n=5 Participants
|
3 Participants
n=7 Participants
|
2 Participants
n=5 Participants
|
7 Participants
n=4 Participants
|
|
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
|
0 Participants
n=5 Participants
|
0 Participants
n=7 Participants
|
0 Participants
n=5 Participants
|
0 Participants
n=4 Participants
|
|
Race (NIH/OMB)
Black or African American
|
15 Participants
n=5 Participants
|
10 Participants
n=7 Participants
|
14 Participants
n=5 Participants
|
39 Participants
n=4 Participants
|
|
Race (NIH/OMB)
White
|
115 Participants
n=5 Participants
|
119 Participants
n=7 Participants
|
114 Participants
n=5 Participants
|
348 Participants
n=4 Participants
|
|
Race (NIH/OMB)
More than one race
|
4 Participants
n=5 Participants
|
5 Participants
n=7 Participants
|
3 Participants
n=5 Participants
|
12 Participants
n=4 Participants
|
|
Race (NIH/OMB)
Unknown or Not Reported
|
7 Participants
n=5 Participants
|
11 Participants
n=7 Participants
|
13 Participants
n=5 Participants
|
31 Participants
n=4 Participants
|
|
Region of Enrollment
United States
|
143 participants
n=5 Participants
|
148 participants
n=7 Participants
|
146 participants
n=5 Participants
|
437 participants
n=4 Participants
|
PRIMARY outcome
Timeframe: 4 months after start of weight loss programPopulation: Reflects the number of participants in each treatment arm who completed the 4-month assessment
Weight change was assessed using weight at baseline and 4 months
Outcome measures
| Measure |
Internet Weight Loss + Possibility of Brief Phone Coaching
n=134 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive a brief period (i.e., once/week for 3 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Brief phone coaching: Some individuals will receive 3 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss + Possibility of Extended Phone Coaching
n=135 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive an extended period (i.e., once/week for 12 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Extended phone coaching: Some individuals will receive 12 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss Only
n=126 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. No participants in this group will receive any phone coaching.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
|
|---|---|---|---|
|
Percent Weight Change at 4 Months
|
-6.2 percent change
Standard Deviation 4.7
|
-7.0 percent change
Standard Deviation 5.1
|
-4.5 percent change
Standard Deviation 4.7
|
PRIMARY outcome
Timeframe: 12 months after start of weight loss programPopulation: Reflects the number of participants who completed the 12-month assessment
Weight change was assessed using weight at baseline and 12 months
Outcome measures
| Measure |
Internet Weight Loss + Possibility of Brief Phone Coaching
n=131 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive a brief period (i.e., once/week for 3 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Brief phone coaching: Some individuals will receive 3 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss + Possibility of Extended Phone Coaching
n=131 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive an extended period (i.e., once/week for 12 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Extended phone coaching: Some individuals will receive 12 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss Only
n=115 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. No participants in this group will receive any phone coaching.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
|
|---|---|---|---|
|
Percent Weight Change at 12 Months
|
-4.9 percent change
Standard Deviation 6.1
|
-5.5 percent change
Standard Deviation 6.7
|
-3.9 percent change
Standard Deviation 7.4
|
SECONDARY outcome
Timeframe: 12 months after start of weight loss programPopulation: The cost of adding supplemental coaching to a pre-existing weight loss program was calculated per enrolled participant. Data was not collected in the "Internet Weight Loss Only" Arm for this outcome measure since these participants did not receive supplemental coaching.
Cost-effectiveness analyses were completed to determine the intervention cost per kg of weight loss
Outcome measures
| Measure |
Internet Weight Loss + Possibility of Brief Phone Coaching
n=150 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive a brief period (i.e., once/week for 3 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Brief phone coaching: Some individuals will receive 3 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss + Possibility of Extended Phone Coaching
n=150 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive an extended period (i.e., once/week for 12 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Extended phone coaching: Some individuals will receive 12 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss Only
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. No participants in this group will receive any phone coaching.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
|
|---|---|---|---|
|
Cost of Supplemental Coaching Per kg of Weight Loss
|
13.2 dollars per kilogram of weight loss
|
30.8 dollars per kilogram of weight loss
|
—
|
SECONDARY outcome
Timeframe: 4 months after study enrollmentPopulation: The participant flow data for this study was based upon whether or not weight (the primary outcome) was measured at each assessment period. Some participants completed a weight assessment at 4 months but either did not wear the physical activity monitor or did not wear the monitor for enough days (i.e., 4 or more days with greater than 8 hours of device wear time per day). Thus, the number of participants analyzed here is less than what was reported in the Participant Flow.
Physical activity was assessed via Actigraph accelerometers and included moderate-to-vigorous physical activity that was accumulated in bouts of \>=10 minutes. A change score between baseline and 4 months was calculated.
Outcome measures
| Measure |
Internet Weight Loss + Possibility of Brief Phone Coaching
n=123 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive a brief period (i.e., once/week for 3 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Brief phone coaching: Some individuals will receive 3 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss + Possibility of Extended Phone Coaching
n=124 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive an extended period (i.e., once/week for 12 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Extended phone coaching: Some individuals will receive 12 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss Only
n=109 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. No participants in this group will receive any phone coaching.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
|
|---|---|---|---|
|
Change in Physical Activity Minutes (Min/wk)
|
55.37 change in min/wk
Standard Deviation 106.82
|
44.45 change in min/wk
Standard Deviation 108.43
|
24.01 change in min/wk
Standard Deviation 94.43
|
SECONDARY outcome
Timeframe: 4 months after start of weight loss programPopulation: The participant flow data for this study was based upon whether or not weight (the primary outcome) was measured at each assessment period. Some participants completed a weight assessment at 4 months but did not complete a food diary at this time point. Thus, the number of participants analyzed here is less than what was reported in the Participant Flow.
Dietary intake was assessed using self-reported kcal totals obtained from food diaries. The change was calculated from baseline to 4 months.
Outcome measures
| Measure |
Internet Weight Loss + Possibility of Brief Phone Coaching
n=111 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive a brief period (i.e., once/week for 3 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Brief phone coaching: Some individuals will receive 3 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss + Possibility of Extended Phone Coaching
n=111 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive an extended period (i.e., once/week for 12 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Extended phone coaching: Some individuals will receive 12 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss Only
n=97 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. No participants in this group will receive any phone coaching.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
|
|---|---|---|---|
|
Change in Dietary Intake (Kcals)
|
-417.78 change in kcals
Standard Deviation 379.62
|
-528.51 change in kcals
Standard Deviation 389.79
|
-500.51 change in kcals
Standard Deviation 401.76
|
SECONDARY outcome
Timeframe: 4 months after start of weight loss programPopulation: Percentage of days that participants monitored their calorie intake on the study website over the first 4 months of the program (out of 112)
Percentage of days that participant self-monitored their calorie intake on study website
Outcome measures
| Measure |
Internet Weight Loss + Possibility of Brief Phone Coaching
n=134 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive a brief period (i.e., once/week for 3 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Brief phone coaching: Some individuals will receive 3 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss + Possibility of Extended Phone Coaching
n=135 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive an extended period (i.e., once/week for 12 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Extended phone coaching: Some individuals will receive 12 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss Only
n=126 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. No participants in this group will receive any phone coaching.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
|
|---|---|---|---|
|
Self-monitoring of Calorie Intake
|
79.5 % of days
Standard Deviation 27.3
|
85.4 % of days
Standard Deviation 23.4
|
66.5 % of days
Standard Deviation 31.4
|
SECONDARY outcome
Timeframe: 4 months after start of weight loss programPopulation: Percentage of weekly video lessons that participants viewed over the first 4 months of the program (out of 16)
Percentage of video lessons viewed on study website
Outcome measures
| Measure |
Internet Weight Loss + Possibility of Brief Phone Coaching
n=134 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive a brief period (i.e., once/week for 3 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Brief phone coaching: Some individuals will receive 3 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss + Possibility of Extended Phone Coaching
n=135 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. Some participants in this group will also be selected to receive an extended period (i.e., once/week for 12 weeks) of phone coaching starting at week 5. The first coaching call will be approximately 45 minutes in duration and remaining calls with be 10-15 minutes. Coaches will problem solve with participants and help them develop an individualized meal plan.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
Extended phone coaching: Some individuals will receive 12 weeks of phone coaching. Coaching calls will occur 1x/week, starting at week 5. Once coaching calls are completed, the participant will not have any other contact with their coach.
|
Internet Weight Loss Only
n=126 Participants
Participants randomized to this group will receive a 4-month, Internet-delivered weight loss program followed by an 8-month, Internet-delivered weight loss maintenance program. All individuals will be taught behavioral strategies for changing diet and physical activity behaviors via video lessons. No participants in this group will receive any phone coaching.
Internet-based weight loss program: 12-month, Internet-based weight loss/maintenance program.
|
|---|---|---|---|
|
Video Lesson Viewing
|
68.7 % of lessons
Standard Deviation 28.9
|
83.0 % of lessons
Standard Deviation 26.6
|
52.0 % of lessons
Standard Deviation 32.3
|
Adverse Events
Internet Weight Loss + Possibility of Brief Phone Coaching
Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths
Internet Weight Loss + Possibility of Extended Phone Coaching
Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths
Internet Weight Loss Only
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
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place