Efficacy of Web-Based Weight Loss Maintenance Programs: A Randomized Controlled Trial Comparing Standard Features Versus the Addition of Enhanced Personalized Feedback over 12 Months
Abstract
1. Introduction
2. Materials and Methods
2.1. Participants
2.2. Study Design
2.3. Measures
2.4. Data Analysis
3. Results
4. Discussion
Supplementary Materials
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Characteristic | Subgroup or Mean (SD) | Treatment Group | p-Value | ||
---|---|---|---|---|---|
Basic WLM (n = 114) | Enhanced WLM (n = 113) | All (n = 227) | |||
Sex | Men | 48 (42%) | 52 (46%) | 100 (44%) | 0.55 |
Country of birth | Australia | 108 (95%) | 100 (88%) | 208 (92%) | 0.23 |
Highest level of education | School | 37 (32%) | 28 (25%) | 65 (29%) | 0.49 |
Trade/Diploma | 41 (36%) | 40 (35%) | 81 (35%) | ||
University Degree | 24 (21%) | 28 (25%) | 52 (23%) | ||
Higher University Degree | 12 (11%) | 17 (15%) | 29 (13%) | ||
Weekly household income (AUS$) | <$700 | 12 (11%) | 7 (6.4%) | 19 (8.8%) | 0.60 |
$700 to <$1000 | 6 (5.7%) | 5 (4.5%) | 11 (5.1%) | ||
$1000 to <$1400 | 13 (12%) | 11 (10%) | 24 (11%) | ||
$1500 or more | 71 (67%) | 84 (76%) | 155 (72%) | ||
Age (years) | mean (SD) | 43.3 (9.7) | 41.3 (10.3) | 42.3 (10.1) | 0.14 |
Height (m) | mean (SD) | 1.70 (0.09) | 1.72 (0.09) | 1.71 (0.09) | 0.17 |
Weight (kg) | mean (SD) | 88.5 (14.5) | 89.3 (15.6) | 88.9 (15.1) | 0.70 |
Body mass index (kg/m2) | mean (SD) | 30.6 (4.1) | 30.1 (4.1) | 30.4 (4.1) | 0.45 |
Waist circumference at umbilicus (cm) | mean (SD) | 100.6 (11.1) | 98.5 (11.7) | 99.6 (11.4) | 0.18 |
Waist circumference at narrowest point (cm) | mean (SD) | 93.2 (11.5) | 92.2 (11.9) | 92.7 (11.7) | 0.52 |
Waist to height ratio at umbilicus | mean (SD) | 0.59 (0.07) | 0.57 (0.07) | 0.58 (0.07) | 0.04 |
Waist to height ratio at narrowest point | mean (SD) | 0.55 (0.07) | 0.54 (0.06) | 0.54 (0.06) | 0.15 |
Weight loss at baseline entry to study (24 weeks) | mean (SD) | −4.38 (5.30) | −4.47 (6.37) | −4.42 (5.84) | 0.91 |
Systolic blood pressure (mmHg) | mean (SD) | 117.5 (13) | 117.7 (12) | 117.6 (12.5) | 0.92 |
Diastolic blood pressure (mmHg) | mean (SD) | 77.6 (10.6) | 77.2 (9.2) | 77.4 (9) | 0.76 |
Resting heart rate (bpm) | mean (SD) | 64.6 (9.5) | 64.7 (10.2) | 64.6 (9.8) | 0.94 |
Total serum cholesterol (mmol/L) | mean (SD) | 5.2 (1.1) | 4.8(1.0) | 5.0 (1.1) | 0.03 |
LDL cholesterol (mmol/L) | mean (SD) | 3.1 (1.0) | 2.9 (0.8) | 3.0 (0.9) | 0.08 |
HDL cholesterol (mmol/L) | mean (SD) | 1.3 (0.3) | 1.3 (0.3) | 1.3 (0.3) | 0.41 |
Triglycerides (mmol/L) | mean (SD) | 1.5 (1.0) | 1.3 (0.7) | 1.4 (0.9) | 0.16 |
Glucose (mmol/L) | mean (SD) | 4.6 (0.6) | 4.5 (0.7) | 4.6 (0.7) | 0.08 |
Insulin (mIU/L) | mean (SD) | 6.6 (5.5) | 6.9 (6.2) | 6.7 (5.9) | 0.73 |
Characteristic | Treatment Group Mean Change (SD) | Absolute Difference between Groups LSM (95% CI) | p Values for Group Effect | |
---|---|---|---|---|
Basic | Enhanced | Enhanced vs. Basic | Difference at Specified Time | |
Weight (kg) | 1.3 (5.1) | 1.5 (4.4) | 0.15 (−1.09, 1.39) | 0.81 |
Systolic blood pressure (mmHg) | 1.1 (12.1) | 1.1 (10.2) | 0.24 (−2.59, 3.08) | 0.87 |
Diastolic blood pressure (mmHg) | −1.5 (8.1) | −0.1 (6.5) | 1.15 (−0.76, 3.06) | 0.24 |
Body mass index (kg/m2) | 0.5 (1.9) | 0.5 (1.6) | 0.02 (−0.46, 0.50) | 0.93 |
Pulse rate (bpm) | −0.3 (6.7) | 0.5 (5.8) | 0.74 (−0.88, 2.35) | 0.37 |
Waist circumference at umbilicus (cm) | 3.8 (5.4) | 3.3 (4.9) | 0.76 (−0.63, 2.16) | 0.28 |
Waist circumference at narrowest point (cm) | 2.6 (4.6) | 2.6 (4.6) | 0.11 (−1.12, 1.35) | 0.86 |
Waist to height ratio at umbilicus | 0.0 (0.0) | 0.0 (0.0) | 0.01 (−0.00, 0.01) | 0.21 |
Waist to height ratio at narrowest point | 0.0 (0.0) | 0.0 (0.0) | 0.00 (−0.01, 0.01) | 0.80 |
Total serum cholesterol (mmol/L) | 0.1 (0.8) | 0.2 (0.7) | 0.07 (−0.12, 0.26) | 0.50 |
LDL cholesterol (mmol/L) | 0.0 (0.6) | 0.1 (0.5) | 0.01 (−0.15, 0.16) | 0.94 |
HDL cholesterol (mmol/L) | 0.0 (0.2) | 0.0 (0.2) | 0.00 (−0.06, 0.06) | 0.88 |
Triglycerides (mmol/L) | 0.0 (0.5) | 0.2 (0.5) | 0.13 (−0.02, 0.27) | 0.10 |
Glucose (mmol/L) | 0.1 (0.5) | 0.2 (0.5) | 0.08 (−0.05, 0.22) | 0.20 |
Insulin (mIU/L) | 1.6 (4.2) | 0.89 (6.5) | 0.61 (−0.719, 2.01) | 0.39 |
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Collins, C.E.; Morgan, P.J.; Hutchesson, M.J.; Oldmeadow, C.; Barker, D.; Callister, R. Efficacy of Web-Based Weight Loss Maintenance Programs: A Randomized Controlled Trial Comparing Standard Features Versus the Addition of Enhanced Personalized Feedback over 12 Months. Behav. Sci. 2017, 7, 76. https://doi.org/10.3390/bs7040076
Collins CE, Morgan PJ, Hutchesson MJ, Oldmeadow C, Barker D, Callister R. Efficacy of Web-Based Weight Loss Maintenance Programs: A Randomized Controlled Trial Comparing Standard Features Versus the Addition of Enhanced Personalized Feedback over 12 Months. Behavioral Sciences. 2017; 7(4):76. https://doi.org/10.3390/bs7040076
Chicago/Turabian StyleCollins, Clare E., Philip J. Morgan, Melinda J. Hutchesson, Christopher Oldmeadow, Daniel Barker, and Robin Callister. 2017. "Efficacy of Web-Based Weight Loss Maintenance Programs: A Randomized Controlled Trial Comparing Standard Features Versus the Addition of Enhanced Personalized Feedback over 12 Months" Behavioral Sciences 7, no. 4: 76. https://doi.org/10.3390/bs7040076
APA StyleCollins, C. E., Morgan, P. J., Hutchesson, M. J., Oldmeadow, C., Barker, D., & Callister, R. (2017). Efficacy of Web-Based Weight Loss Maintenance Programs: A Randomized Controlled Trial Comparing Standard Features Versus the Addition of Enhanced Personalized Feedback over 12 Months. Behavioral Sciences, 7(4), 76. https://doi.org/10.3390/bs7040076