Jakicic JM, Davis KK, King WC, Rickman AD, Rogers RJ. EFFECT OF A BEHAVIORAL INTERVENTION ON WEIGHT LOSS, BODY COMPOSITION, FITNESS, AND PHYSICAL ACTIVITY IN YOUNG ADULTS. The Obesity Society national meeting. Boston, MA. 2014.
Background: Overweight and obesity in young adulthood (age=18 to 35 years) has been increasing. Few studies have specifically examined the effect of a standard behavioral intervention on change in weight, body composition, fitness, and physical activity in this age group, which is the aim of this study.
Methods: Participants (N=470; median age: 30.6[IQR: 27.0, 33.5] years; median BMI: 30.9[IQR: 28.1, 34.1]) were enrolled in a 6 month behavioral weight loss intervention. The intervention included weekly group sessions, a prescribed energy restricted diet and prescribed moderate-to-vigorous physical activity (MVPA). Assessments included weight, body composition by DXA, fitness by exercise test, and objective physical activity using a monitor. The monitor provided data on minutes of total MVPA (>3 METs), MVPA performed in bouts >10 minutes, total light physical activity (LPA, 1.5 to
Results: There were changes in %weight loss (-8.8%[-3.8,-13.4]), %body fat (-3.7%[-1.6,-6.4]), and fitness (3.5ml/kg/min[0.8,6.2])(p >10 minutes from 100[26,192] to 215[99,389]min/wk (p >150 min/wk of MVPA performed in >10 minute bouts increased from 34.2% at baseline to 66.3% at 6 months (p
Conclusions: A behavioral intervention can be effective at eliciting significant 6 month changes in weight, body composition, fitness, and physical activity in young adults. However, additional efforts are needed to further increase physical activity participation, which may be the focus of future interventions.