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Dietary protein intake is vital for the maintenance of skeletal muscle mass and health. The production of animal-based proteins sources is associated with growing environmental and ethical challenges. As such, sustainable alternatives are needed. Algae are sustainably produced high-protein sources and it is predicted that algae will become one of the most consumed proteins in the next decades. However, the effects of algae on the stimulation of muscle mass growth are unknown. Therefore, we aim to assess the rate of digestion and absorption, and the effects on muscle growth of two types of algae (spirulina and chlorella) when compared to a sustainable non-animal derived fungal reference protein (mycoprotein), a source known to elicit a robust anabolic response.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Mycoprotein | Experimental | Bolus ingestion of mycoprotein providing 25g protein |
|
| Spirulina | Experimental | Bolus ingestion of spirulina providing 25g protein |
|
| Chlorella | Experimental | Bolus ingestion of chlorella providing 25g protein |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Protein ingestion | Dietary Supplement | Bolus ingestion of 25g protein |
|
| Measure | Description | Time Frame |
|---|---|---|
| Muscle Protein Synthesis | The rate of synthesis of new muscle protein (Fractional Synthetic Rate %/h) | 7.5 hours |
| Measure | Description | Time Frame |
|---|---|---|
| Plasma Amino Acid Kinetics | The rate of appearance of amino acid ingested in the drink | 7.5 hours |
| Serum Insulin | Basal and postprandial concentrations of serum insulin |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Benjamin T Wall, PhD | Professor of Nutritional Physiology | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of Exeter | Exeter | Devon | EX1 2LU | United Kingdom |
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| 7.5 hours |
| Blood Glucose | Basal and postprandial concentrations of blood glucose | 7.5 hours |
| mTOR phosphorylation | The amount of mTOR that has been activated in the muscle cell | 7.5 hours |