Comparison of 4 Diets in the Management of Overweight Patients With Vascular Disease
Comparison of a Low Glycemic Load Diet With a Canada Food Guide Diet in the Management of Overweight Patients With Cardiovascular Disease
Type 2 diabetes can be prevented by lifestyle changes in high-risk subjects. However, controversies exist on nutritional management of diabetes. Recent data suggests that glucose and insulin responses are affected by not only the quality, but the quantity of carbohydrate consumed. This is referred to as glycemic load.
To date, there have not been any prospective randomized studies which examine the utility of a low glycemic load diet.
The purpose of the proposed study is to compare the effectiveness of a Canada Food Guide Diet with a low glycemic load diet on blood sugar control in overweight type 2 diabetics.
Descripción general del estudio
Estado
Condiciones
Intervención / Tratamiento
Descripción detallada
The primary objective of the proposed study is to compare the effectiveness of a low glycemic load diet with a Canada Food Guide Diet on weight loss in overweight subjects with cardiovascular disease.
The secondary objective of the proposed study is to compare the effectiveness of a low glycemic load diet with both a low glycemic index diet and a low carbohydrate diet on weight loss in overweight subjects with cardiovascular disease. The purpose of this portion of the study is to try to elucidate the relative contributions of the glycemic index and carbohydrate content to the overall effectiveness of a low glycemic load diet. Furthermore, through detailed analysis of actual dietary consumption, and correlation with subsequent weight loss, we hope to gain greater insight into the role of compliance on the success of the various dietary strategies. Restriction of caloric intake is necessary for weight loss regardless of the dietary strategy employed, however, long-term success depends ultimately on the ability of the patients to comply with the said diet. The success of a low glycemic load diet may lie in its superior effectiveness (greater compliance, less calorie consumption) rather than a greater efficacy per se.
A secondary analysis of the effects of all three diets (low glycemic load, low glycemic index and low carbohydrate) on modifying other metabolic factors will also be performed. In particular, the study will examine the effect of the three diets on lipid and fat metabolism, insulin resistance and inflammation.
Tipo de estudio
Inscripción (Actual)
Fase
- Fase 4
Contactos y Ubicaciones
Ubicaciones de estudio
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Ontario
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Kingston, Ontario, Canadá, K7L 5G2
- Vascular Disease Prevention and Research Centre
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Descripción
Inclusion Criteria:
- Men and women, aged 18 to 80 years
- BMI 25-40 kg/m2
Documented Cardiovascular Disease as evidenced by one or more of the following:
- Coronary atherosclerosis during coronary angiography
- Documented myocardial infarction
- Carotid atherosclerosis during carotid ultrasonography
- Carotid atherosclerosis during CT angiography
- Carotid atherosclerosis during MR angiography
- Ischemic brain infarct documented on brain imaging studies
Exclusion Criteria:
- Documented Type I or II diabetes mellitus (as defined by the Canadian Diabetes Association 2003 Clinical Practice Guidelines for the Prevention and Management of Diabetes in Canada)
- Previous (<5 years ago) individual or group dietary counseling with a registered dietician
- Pregnant or lactating women
- Presence of clinically important hepatic or renal disease
- Inability to communicate effectively using the English language
- Enrollment in another study concurrently
- Inability to give informed consent
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Tratamiento
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Único
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
|
Otro: 1
Low glycemic load diet
|
A/A for 6 months intensive dietary intervention followed by a visit 1 year from enrolment
|
|
Otro: 2
Canada Food Guide Diet
|
A/A for 6 months intensive dietary intervention followed by a visit 1 year from enrolment
|
|
Otro: 3
Low glycemic index diet
|
A/A for 6 months intensive dietary intervention followed by a visit 1 year from enrolment
|
|
Otro: 4
Low carbohydrate diet
|
A/A for 6 months intensive dietary intervention followed by a visit 1 year from enrolment
|
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Periodo de tiempo |
|---|---|
|
To compare the effectiveness of a low glycemic load diet with a Canada Food Guide Diet on weight loss in overweight subjects with cardiovascular disease.
Periodo de tiempo: 1 year
|
1 year
|
Medidas de resultado secundarias
Medida de resultado |
Periodo de tiempo |
|---|---|
|
To compare the effectiveness of a low glycemic load diet with both a low glycemic index diet and a low carbohydrate diet on weight loss in overweight subjects with cardiovascular disease.
Periodo de tiempo: 1 year
|
1 year
|
Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Stephen A LaHaye, MD, Vascular Disease Prevention and Research Centre
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio
Finalización primaria (Actual)
Finalización del estudio (Actual)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Estimar)
Actualizaciones de registros de estudio
Última actualización publicada (Estimar)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- DMED-793-04
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