A Meal-based Comparison of Protein Quality, Complementary Proteins and Muscle Anabolism (MAPP)
27 de abril de 2021 actualizado por: The University of Texas Medical Branch, Galveston
To highlight the importance of protein quality rather than the total protein content of a meal, the investigators will demonstrate that unlike high quality proteins, a single meal containing 30 g of an incomplete protein source does not stimulate skeletal muscle protein synthesis.
Secondly, the investigators will directly challenge a prevalent, but untested, assertion that has the potential to negatively impact health.
The goal is to demonstrate that complementary plant-proteins (i.e., two or more incomplete protein sources) must be consumed at the same meal to stimulate protein synthesis.
Descripción general del estudio
Estado
Terminado
Condiciones
Intervención / Tratamiento
Descripción detallada
The investigators will test the following hypotheses in middle-aged men and women (45-60) years old using a randomized, cross over design. All study objectives will be met concurrently:
- Meals containing 30 g of high quality, predominantly beef-protein (PRO-A) will stimulate acute (i.e., single meal response) and 24 h skeletal muscle protein synthesis [confirmatory hypothesis]
- Meals containing 30 g of complementary plant-based proteins (PRO-B: complete essential amino acid profile at each meal) will stimulate acute and 24 h skeletal muscle protein synthesis, but to a lesser extent than beef-protein.
- A single meal containing 30 g of an incomplete plant-based protein source (PRO-C: lacking one essential amino acid) will fail to acutely stimulate skeletal muscle protein synthesis
- Meals containing 30 g of plant-based protein that are incomplete at each separate meal, but complementary over a 24 h period, will fail to stimulate 24 h skeletal muscle protein synthesis.
- Beef-and plant-based meals will have a similar effect on satiety and 24 h blood glucose [descriptive]
If these hypotheses are correct, the investigators will demonstrate that meals containing a moderate amount of high quality protein, such as beef, are an efficient and effective way to augment a largely plant based diet and stimulate skeletal muscle protein synthesis - a prerequisite for outcomes related to physical function, performance, successful aging and metabolic health.
Tipo de estudio
Intervencionista
Inscripción (Actual)
23
Fase
- No aplica
Contactos y Ubicaciones
Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.
Ubicaciones de estudio
-
-
Texas
-
Galveston, Texas, Estados Unidos, 77555
- Unversity of Texas Medical Branch
-
-
Criterios de participación
Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.
Criterio de elegibilidad
Edades elegibles para estudiar
45 años a 60 años (Adulto)
Acepta Voluntarios Saludables
No
Géneros elegibles para el estudio
Todos
Descripción
Inclusion Criteria:
- All races and ethnic backgrounds
- Men and women, age 45-60 years
- Generally healthy (see exclusion criteria)
- Able and willing to provide informed consent
- Ability to speak and read English (* the study procedures, e.g., muscle biopsy, duration of each acute study, e.g. overnight stay; and multiple dietary questionnaires require sound written and spoken English)
Exclusion Criteria:
- Sarcopenia (defined by: European Working Group on Sarcopenia in Older People, EWGSOP (44))
- Clinically significant heart disease (e.g. New York Heart Classification greater than grade II; ischemia)
- Peripheral vascular disease
- Pulmonary disease
- History of systemic or pulmonary embolus
- Uncontrolled blood pressure (systolic BP>170, diastolic BP>95 mmHg)
- Impaired renal function (creatinine >1.5 mg/dl)
- Anemia (hematocrit <33)
- Untreated thyroid disease (abnormal TSH)
- A recent history (<12 months) of GI bleed
- Diabetes mellitus or other untreated endocrine or metabolic disease
- Electrolyte abnormalities
- Any history of stroke, hypo- or hyper-coagulation disorders
- Recent (3 years) treated cancer other than basal cell carcinoma
- Systemic steroids, anabolic steroids, growth hormone or immunosuppressant use within 12 months
- Recent (6 months) adherence to a weight-loss or weight-gain diet
- Weight change of 5% or more in previous 6 months
- Body mass index >30 or excess body fat that compromises muscle biopsy collection
- Body mass index <20 or recent history (<12 month) of disordered eating
- Dietary preferences or practices that preclude the consumption of the study meals
- Acute infectious disease or chronic infection
- Alcohol or drug abuse
- Any other condition or event considered exclusionary by study physician
- Pregnancy
Plan de estudios
Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Otro
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación cruzada
- Enmascaramiento: Único
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
|
Experimental: PRO-A
Beef protein
|
30 g of beef protein will be consumed at each meal
|
|
Experimental: PRO-B
Complementary proteins at each meal
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30 g of complementary proteins will be consumed at each meal
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|
Experimental: PRO-C
Complementary proteins over 24 hours
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30 g of complementary proteins will be consumed over 24 hours
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Sin intervención: CON
Low protein (<5 g) meal
|
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Acute muscle protein synthesis: PRO-A
Periodo de tiempo: 3 hours after consuming meal
|
Muscle protein synthesis response to PRO-A breakfast meal (%/h)
|
3 hours after consuming meal
|
|
Acute muscle protein synthesis: PRO-B
Periodo de tiempo: 3 hours after consuming meal
|
Muscle protein synthesis response to PRO-B breakfast meal (%/h)
|
3 hours after consuming meal
|
|
Acute muscle protein synthesis: PRO-C
Periodo de tiempo: 3 hours after consuming meal
|
Muscle protein synthesis response to PRO-C breakfast meal (%/h)
|
3 hours after consuming meal
|
|
Acute muscle protein synthesis: CON
Periodo de tiempo: 3 hours after consuming meal
|
Muscle protein synthesis response to CON breakfast meal (%/hour)
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3 hours after consuming meal
|
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24-hour muscle protein synthesis: PRO-A
Periodo de tiempo: Approximately 24 hours
|
Muscle protein synthesis response to PRO-A diet over 24 hours (%/hour)
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Approximately 24 hours
|
|
24-hour muscle protein synthesis: PRO-B
Periodo de tiempo: Approximately 24 hours
|
Muscle protein synthesis response to PRO-B diet over 24 hours (%/hour)
|
Approximately 24 hours
|
|
24-hour muscle protein synthesis: PRO-C
Periodo de tiempo: Approximately 24 hours
|
Muscle protein synthesis response to PRO-C diet over 24 hours (%/hour)
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Approximately 24 hours
|
|
Blood amino acid response to diet: PRO-A
Periodo de tiempo: Approximately 5 hours
|
Blood samples will be drawn to measure amino acid concentrations response to PRO-A breakfast (µmol/L)
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Approximately 5 hours
|
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Blood amino acid response to diet: PRO-B
Periodo de tiempo: Approximately 5 hours
|
Blood samples will be drawn to measure amino acid concentrations response to PRO-B breakfast (µmol/L)
|
Approximately 5 hours
|
|
Blood amino acid response to diet: PRO-C
Periodo de tiempo: Approximately 5 hours
|
Blood samples will be drawn to measure amino acid concentrations response to PRO-B C breakfast (µmol/L)
|
Approximately 5 hours
|
|
Blood amino acid response to diet: CON
Periodo de tiempo: Approximately 5 hours
|
Blood samples will be drawn to measure amino acid concentrations response to CON breakfast (µmol/L)
|
Approximately 5 hours
|
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Blood glucose response to diet: PRO-A
Periodo de tiempo: Approximately 24 hours
|
Blood samples will be drawn to measure blood glucose response to PRO-A diet (mg/dl)
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Approximately 24 hours
|
|
Blood glucose response to diet: PRO-B
Periodo de tiempo: Approximately 24 hours
|
Blood samples will be drawn to measure blood glucose response to PRO-B diet (mg/dl)
|
Approximately 24 hours
|
|
Blood glucose response to diet: PRO-C
Periodo de tiempo: Approximately 24 hours
|
Blood samples will be drawn to measure blood glucose response to PRO-C diet (mg/dl)
|
Approximately 24 hours
|
|
Blood glucose response to diet: CON
Periodo de tiempo: Approximately 5 hours
|
Blood samples will be drawn to measure blood glucose response to CON breakfast meal (mg/dl)
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Approximately 5 hours
|
|
Appetite and Hedonic Questionnaire: PRO-A
Periodo de tiempo: Approximately 8 hours
|
Questionnaires will be given to assess hunger, fullness, desire to eat, thirst, desire to eat something sweet, desire to eat something salty, desire to eat something savory, sleepiness, physical energy, mental energy, and nausea in response to PRO-A diet.
All outcomes are scored individually on a 10 pt visual analog scale using "not at all" being 0 and "extremely" being a 10.
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Approximately 8 hours
|
|
Appetite and Hedonic Questionnaire: PRO-B
Periodo de tiempo: Approximately 8 hours
|
Questionnaires will be given to assess hunger, fullness, desire to eat, thirst, desire to eat something sweet, desire to eat something salty, desire to eat something savory, sleepiness, physical energy, mental energy, and nausea in response to PRO-B diet.
All outcomes are scored individually on a 10 pt visual analog scale using "not at all" being 0 and "extremely" being a 10.
|
Approximately 8 hours
|
|
Appetite and Hedonic Questionnaire: PRO-C
Periodo de tiempo: Approximately 8 hours
|
Questionnaires will be given to assess hunger, fullness, desire to eat, thirst, desire to eat something sweet, desire to eat something salty, desire to eat something savory, sleepiness, physical energy, mental energy, and nausea in response to PRO-C diet.
All outcomes are scored individually on a 10 pt visual analog scale using "not at all" being 0 and "extremely" being a 10.
|
Approximately 8 hours
|
|
Appetite and Hedonic Questionnaire: CON
Periodo de tiempo: Approximately 5 hours
|
Questionnaires will be given to assess hunger, fullness, desire to eat, thirst, desire to eat something sweet, desire to eat something salty, desire to eat something savory, sleepiness, physical energy, mental energy, and nausea in response to CON diet.
All outcomes are scored individually on a 10 pt visual analog scale using "not at all" being 0 and "extremely" being a 10.
|
Approximately 5 hours
|
|
3 day dietary record: PRO-A
Periodo de tiempo: Approximately 36 hours
|
Diet records will be collected and analyzed with ASA24 to assess habitual energy intake the week prior to PRO-A study visit
|
Approximately 36 hours
|
|
3 day dietary record: PRO-B
Periodo de tiempo: Approximately 36 hours
|
Diet records will be collected and analyzed with ASA24 to assess habitual energy intake the week prior to PRO-B study visit
|
Approximately 36 hours
|
|
3 day dietary record: PRO-C
Periodo de tiempo: Approximately 36 hours
|
Diet records will be collected and analyzed with ASA24 to assess habitual energy intake the week prior to PRO-C study visit
|
Approximately 36 hours
|
|
3 day dietary record: CON
Periodo de tiempo: Approximately 36 hours
|
Diet records will be collected and analyzed with ASA24 to assess habitual energy intake the week prior to CON study visit
|
Approximately 36 hours
|
|
Palatability Questionnaire:PRO-A
Periodo de tiempo: Approximately 8 hours
|
Questionnaires will be given to assess palatability of the PRO-A diet.
Outcomes include the participants ranking of the food appearance, aroma intensity, aroma, flavor intensity, flavor, texture and overall appeal of the food.
A 10 pt visual analog scale will be used to assess the subject's response with 0 being "extremely dislike", 5 being "neither like nor dislike" and 10 being "extremely like".
|
Approximately 8 hours
|
|
Palatability Questionnaire:PRO-B
Periodo de tiempo: Approximately 8 hours
|
Questionnaires will be given to assess palatability of the PRO-B diet.
Outcomes include the participants ranking of the food appearance, aroma intensity, aroma, flavor intensity, flavor, texture and overall appeal of the food.
A 10 pt visual analog scale will be used to assess the subject's response with 0 being "extremely dislike", 5 being "neither like nor dislike" and 10 being "extremely like".
|
Approximately 8 hours
|
|
Palatability Questionnaire:PRO-C
Periodo de tiempo: Approximately 8 hours
|
Questionnaires will be given to assess palatability of the PRO-C diet.
Outcomes include the participants ranking of the food appearance, aroma intensity, aroma, flavor intensity, flavor, texture and overall appeal of the food.
A 10 pt visual analog scale will be used to assess the subject's response with 0 being "extremely dislike", 5 being "neither like nor dislike" and 10 being "extremely like".
|
Approximately 8 hours
|
|
Palatability Questionnaire:CON
Periodo de tiempo: Approximately 5 hours
|
Questionnaires will be given to assess palatability of the CON diet.
Outcomes include the participants ranking of the food appearance, aroma intensity, aroma, flavor intensity, flavor, texture and overall appeal of the food.
A 10 pt visual analog scale will be used to assess the subject's response with 0 being "extremely dislike", 5 being "neither like nor dislike" and 10 being "extremely like".
|
Approximately 5 hours
|
Colaboradores e Investigadores
Aquí es donde encontrará personas y organizaciones involucradas en este estudio.
Patrocinador
Investigadores
- Investigador principal: Doug Paddon-Jones, PhD, University of Texas
Fechas de registro del estudio
Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.
Fechas importantes del estudio
Inicio del estudio (Actual)
26 de marzo de 2019
Finalización primaria (Actual)
21 de enero de 2021
Finalización del estudio (Actual)
21 de enero de 2021
Fechas de registro del estudio
Enviado por primera vez
22 de enero de 2019
Primero enviado que cumplió con los criterios de control de calidad
24 de enero de 2019
Publicado por primera vez (Actual)
25 de enero de 2019
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
29 de abril de 2021
Última actualización enviada que cumplió con los criterios de control de calidad
27 de abril de 2021
Última verificación
1 de diciembre de 2020
Más información
Términos relacionados con este estudio
Otros números de identificación del estudio
- 18-0147
Plan de datos de participantes individuales (IPD)
¿Planea compartir datos de participantes individuales (IPD)?
No
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
No
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
No
producto fabricado y exportado desde los EE. UU.
No
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