Assignment 3: Literature Review: Five Articles Abstracted onto the Evaluation TableIn Weeks 2–7, you will submit an evaluation table document with five research articles abstracted for your literatu
Evaluation Table— The Practice of Monitoring Sleep Duration to Aid in Weight Loss
First Author (Year) | Conceptual Framework | Design/Method | Sample and Setting | Major Variables Studied (and Their Definitions) | Measurement | Data Analysis | Findings | Appraisal: Worth to Practice |
Kobayashi, et al., 2012 | none | 3 year Retrospective cohort study | 21,469 healthy adults > 20 yrs with BMI > 25 and weight gain who presented for health checkups; Tokyo, Japan | BMI, sleep duration, weight gain | Self reported average nightly sleep duration | Regression analysis | < 5 hrs sleep per night may facilitate weight gain; optimal duration to mitigate weight gain is 7 hrs | Strengths: size, length of study Weaknesses: Japanese population only; no qualitative data (sleep habits, quality), potential confounder: OSA; 7,649 not included in analysis due to loss data |
Alfaris, et al., 2015 | none | 2 year RCT | 390 obese (BMI 30-50) men & women divided in 3 weight loss intervention programs (differed in consultation intensity); University of Pennsylvania | Sleep duration and quality, mood, BMI, weight | PSQI survey; Patient Health Questionnaire-8 (PHQ-8) mood assessment; administered at baseline, 6 and 24 months | P value | losing 5% of initial weight is associated with short-term improvement in sleep duration and quality & favorable short- and long-term changes in mood | Favorable results in all 3 intervention groups; 1/3 to 1/5 of all 3 groups lost 5% of initial weight Strengths: 86% retention rate Weaknesses: absence of larger mean weight losses |
Knox, 2015 | none | Systematic review | 67 studies narrowed to 2 (RCT and cohort) | Sleep duration and quality, BMI, weight | PSQI survey, BMI, weight | P value, RR | Inconclusive; whether PCPs should emphasize sleep in the treatment of obese patients remains unanswered | Strengths: Higher level data Weakness: Only two studies |
Coughlin & Smith, 2014 | none | Thematic review of four 2008 systematic review | 4 systematic reviews | Sleep duration, BMI, weight | Self- reports, PSQI | Pooled analysis, OR | Support for an association between short sleep duration & weight gain | There is good experimental & substantive longitudinal data linking short sleep to increased weight gain & obesity as well as to behaviors implicated in weight gain |
Filitrault, et al., 2014 | none | RCT, dietary intervention of 12-16 weeks | n = 150 with avg BMI 33.3 | BMI, anthropometric measurements, eating behavior traits (Three-Factor Eating Questionnaire), PSQI score & sleep duration @ baseline & post intervention | Self reports, PSQI | P value | changes in strategic dieting behavior were constantly negatively associated with changes in body weight and fat mass (P<0.05) for recommended duration sleepers | Eating behavior traits & sleep may act together to influence the outcome of weight-loss programs |
OSA: obstructive sleep apnea PSQI: Pittsburgh Sleep Quality Index
References
Alfaris, N., Wadden, T., Sarwer, D., Diwald, L., Volger, S., Hong, P.,…Chittams, J. (2015). Effects of a 2-year behavioral weight loss intervention on sleep and mood in obese individuals treated in primary care practice. Obesity, 23, 558-564. doi: http://dx.doi.org/10.1002/oby.20996
Coughlin, J. & Smith, M. (2014). Sleep, obesity, and weight loss in adults: Is there a rationale for providing sleep interventions in the treatment of obesity? International Review of Psychiatry, 26(2), 177-188. doi: http://dx.doi.org/10.3109/09540261.2014.911150
Filiatrault, M., Chaput, J., Drapeau, V., & Tremblay, A. (2014). Eating behavior traits and sleep as determinants of weight loss in overweight and obese adults. Nutrition and Diabetes, 2014(4), 1-8. doi: http://dx.doi.org/10.1038/nutd.2014.37
Knox, K. (2015). Should primary care physicians address sleep to improve weight loss in obese patients? A Clin-IQ. Journal of Patient Centered Research and Reviews, 2015(2), 197-200. doi: http://dx.doi.org/10.17294/2330-0698.1205
Kobayashi, D., Takahashi, O., Deshpande, G. A., Shimbo, T., & Fukui, T. (2012). Association between weight gain, obesity, and sleep duration: A large-scale 3-year cohort study. Sleep and Breathing, 16(3), 829-33. doi: http://dx.doi.org/10.1007/s11325-011-0583-0
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NSG8100 Capstone in Applied Practice I
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