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Randomized Controlled Trial
. 2011;4(3):222-8.
doi: 10.1159/000329619. Epub 2011 Jun 9.

Comparison of education-only versus group-based intervention in promoting weight loss: a randomised controlled trial

Yoshio Nakata  1 , Masafumi Okada, Koichi Hashimoto, Yoshinori Harada, Hirohito Sone, Kiyoji Tanaka
Affiliations
Randomized Controlled Trial

Comparison of education-only versus group-based intervention in promoting weight loss: a randomised controlled trial

Yoshio Nakata et al. Obes Facts. 2011.

Erratum in

  • Obes Facts. 2013;6(1):89-90

Abstract

Aim: To compare the effectiveness of education-only versus group-based intervention in promoting weight loss.

Methods: Between April and October 2009, a 6-month randomised controlled trial was conducted at Mito Kyodo General Hospital in Japan (UMIN000001259). The participants were 188 overweight adults (145 women, 43 men) aged 40-65 years. They were randomly assigned to one of three groups: control, moderate or intensive intervention. A single motivational lecture was provided to all three groups, educational materials (textbooks, notebooks, and a pedometer) to the moderate and intensive intervention groups, and group-based support to the intensive intervention group. Amount of weight loss was the primary outcome measure. Secondary outcome measures were components of metabolic syndrome.

Results: Mean ± SD weight loss of participants in the control, moderate and intensive intervention groups was 2.9 ± 4.1, 4.7 ± 4.0 and 7.7 ± 4.1 kg, respectively. Bonferroni post-hoc comparisons revealed all between-group differences to be significant (p < 0.05). Waist circumference decreased in the intensive intervention group more than in the other groups, whereas no significant differences were observed in the other secondary outcome measures.

Conclusion: Education-only intervention is a cost-effective method to promote weight loss. Adding group-based intervention further promotes weight loss.

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Figures

Fig. 1
Fig. 1
Flow diagram of participant progress through the phases of the 6-month randomised trial.
Fig. 2
Fig. 2
Pattern of change in body weight during 6-month intervention by treatment assignment. Each data point represents the mean value for all randomised participants with missing data replaced by the last observation carried forward. Error bars indicate 95% confidence intervals. Points and error bars are jittered horizontally to improve visibility.
See this image and copyright information in PMC

References

    1. Knowler WC, Barrett-Connor E, Fowler SE, Hamman RF, Lachin JM, Walker EA, Nathan DM; Diabetes Prevention Program Research Group. Reduction in the incidence of type 2 diabetes with lifestyle intervention or metformin. N Engl J Med. 2002;346:393–403. - PMC - PubMed
    1. Tuomilehto J, Lindström J, Eriksson JG, Valle TT, Hämäläinen H, Ilanne-Parikka P, Keinänen-Kiukaanniemi S, Laakso M, Louheranta A, Rastas M, Salminen V, Uusitupa M, Finnish Diabetes Prevention Study Group. Prevention of type 2 diabetes mellitus by changes in lifestyle among subjects with impaired glucose tolerance. N Engl J Med. 2001;344:1343–1350. - PubMed
    1. American Diabetes Association and National Institute of Diabetes, Digestive and Kidney Diseases. The prevention or delay of type 2 diabetes. Diabetes Care. 2002;25:742–749. - PubMed
    1. Wing RR, Behavioral interventions for obesity. recognizing our progress and future challenges. Obes Res. 2003;11((suppl)):3–6. - PubMed
    1. Dansinger ML, Tatsioni A, Wong JB, Chung M, Balk EM. Meta-analysis: the effect of dietary counseling for weight loss. Ann Intern Med. 2007;147:41–50. - PubMed

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