Predicting success: Factors associated with weight change in obese youth undertaking a weight management program

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• 作者：Kimberley A. Baxter^a ; ^{k.baxter@uq.edu.au} ; Robert S. Ware^b ; Jennifer A. Batch^c ; Helen Truby^d
• 关键词：Adolescent ; Obesity ; Weight loss predictors ; Body mass index
• 刊名：Obesity Research Clinical Practice
• 出版年：2013
• 出版时间：March-April, 2013
• 年：2013
• 卷：7
• 期：2
• 页码：e147-e154
• 全文大小：245 K

文摘

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class=""h3"">Summary

class=""h4"">Objective

To explore which baseline physiological and psychosocial variables predict change in body mass index (BMI) z-score in obese youth after 12 weeks of a dietary weight management study.

class=""h4"">Methods

Participants were obese young people participating in a dietary intervention trial in Brisbane Australia. The outcome variable was change in BMI z-score. Potential predictors considered included demographic, physiological and psychosocial parameters of the young person, and demographic characteristics of their parents. A multivariable regression model was constructed to examine the effect of potential predictive variables.

class=""h4"">Results

Participants (n = 88) were predominantly female (69.3 % ), and had a mean(standard deviation) age of 13.1(1.9) years and BMI z-score of 2.2(0.4) on presentation. Lower BMI z-score (p < 0.001) and insulin resistance (p = 0.04) at baseline, referral from a paediatrician (p = 0.02) and being more socially advantaged (p = 0.046) were significantly associated with weight loss. Macronutrient distribution of diet and physical activity level did not contribute.

class=""h4"">Conclusions

Early intervention in obesity treatment in young people improves likelihood of success. Other factors such as degree of insulin resistance, social advantage and referral source also appear to play a role. Assessing presenting characteristics and factors associated with treatment outcome may allow practicing clinicians to individualise a weight management program or determine the ¡®best-fit¡¯ treatment for an obese adolescent.