One highly intense lifestyle change study found social support was helpful and four traditional lifestyle change programs did not find it helpful. The definition of social support has evolved to include multiple dimensions of social support measured pre- and posttreatment. Two RCTs, conducted in the 1990s,manipulated social support and found no significant treatment effect. In an RCT published in 2006,multiple dimensions of social support were measured pre- and post-treatment and use of social resources was shown to mediate intervention effects on physical activity, fat consumption, and glycated hemoglobin change. Additional studies are needed to measure impact of social support interventions on<br>outcomes.
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