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An evaluation of an Internet-based approach to weight loss with low glycaemic load principles

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Abstract:

Abstract Background: 

The prevalence of overweight and obesity is increasing worldwide at an alarming rate. An Internet-based weight-loss programme has the potential to reach larger numbers of people than traditional face-to-face programmes. A growing body of evidence supports the use of low glycaemic load (GL) diets for weight loss. The present study aimed to investigate the efficacy of an Internet-based weight-loss programme that included foods with a low GL. Methods: 

One hundred and three volunteers, with a body mass index (BMI) ≥28 kg m−2, enrolled into an Internet weight-loss programme. A dietitian counselled participants over the Internet via weekly interactive chat rooms and monthly e-mails. Participants self-recorded body weight and food intake directly on to the Internet site. Weight, BMI and waist circumference were measured, and dietary data collected, at baseline and 6 months. Results: 

Seventy participants completed the 6-month weight-loss programme. Among these, mean weight, BMI and waist circumference significantly decreased by 3.5 kg (95% CI = 2.3–4.7), 1.2 kg m−2 (95% CI = 0.8–1.7) and 4.8 cm (95% CI = 2.8–6.8), of baseline values respectively (P < 0.001). Twenty-five (36%) of the 70 participants lost a clinically significant amount of weight (>5% of initial body weight). Conclusions: 

This descriptive study has shown that an Internet-based weight-loss programme with low GL principles can promote weight loss. This type of intervention and approach could be used to enhance other weight-loss strategies.

Keywords: Internet-based diet; glycaemic index; glycaemic load; weight loss

Document Type: Research Article

DOI: https://doi.org/10.1111/j.1365-277X.2010.01138.x

Affiliations: 1: School of Health Professions, University of Plymouth, Plymouth, UK 2: New Zealand Institute for Plant & Food Research Limited, Christchurch, New Zealand 3: Campbell & Associates, Christchurch, New Zealand

Publication date: 2011-04-01

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