RecruitingNAINTERVENTIONAL

The Effect of Ingesting a Novel Algae Protein Source on Rested and Exercised Muscle Protein Synthesis Rates in Older Adults.

This research is investigating how different types of protein affect muscle repair and growth in people aged 65 to 80. Specifically, it's comparing a new, flavourless protein source from algae with the well-known whey protein, often found in milk products. The study aims to understand how muscles respond to these proteins after a period of rest and also after exercise. The goal is to see if algae protein could be a good option for older adults to maintain healthy muscles. This is important because as we get older, maintaining muscle strength and mass helps with everyday activities and overall health.

At a glance

Status

Recruiting

Phase

Sponsor

University of Exeter

Enrolment target

Start

23 Feb 2025

Estimated completion

01 Mar 2026

Nutritional Intervention

What is this study about?

This study is focused on understanding how different types of protein can help older adults keep their muscles strong and healthy. As we age, our muscles can naturally start to weaken and shrink, which can make everyday tasks harder. Protein is essential for repairing and building muscles, especially after physical activity.

The researchers want to see if a new protein source, made from algae, can be as effective as – or even better than – whey protein, which is very common and known for supporting muscle growth. They will be looking at how well the body uses these proteins to build and repair muscle both when someone is resting and after they've done some exercise.

This research is important because it could lead to new dietary recommendations or supplements that help older adults maintain their muscle mass. Finding effective and accessible protein sources like algae could offer more choices, especially for those with dietary restrictions or who prefer plant-based options, ultimately contributing to better quality of life and independence in later years.

Key takeaways

Researches are testing a new algae protein for muscle health in older adults.
This study compares algae protein to common milk-based (whey) protein.
It looks at how muscles respond to protein after rest and exercise.
Aims to find new ways to help older adults maintain muscle strength.
Participants must be 65-80 years old and generally healthy.
Understanding protein's role is key to healthy ageing.

Who may be eligible?

This study is looking for both men and women between the ages of 65 and 80. You should be generally active but not a professional athlete, and your weight should be within a healthy range for your height (your Body Mass Index or BMI should be between 18.5 and 30).

There are certain health conditions that would prevent you from taking part. For example, if you have diabetes or other conditions affecting your body's metabolism, or if you have heart problems like high blood pressure (140/90 mmHg or higher), you wouldn't be able to join. Also, if you have certain stomach or gut issues, or are allergic to common foods, you wouldn't be suitable.

Finally, if you regularly take certain medications that could affect how your body uses protein, or if you have a history of conditions like epilepsy, seizures, or schizophrenia, this study might not be right for you. They also can't include anyone who has been taking over-the-counter medicines consistently for more than a month.

Could this study suit you?

Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.

Are you between 65 and 80 years old?
Is your weight in a healthy range for your height?
Do you generally keep active, but not as a professional athlete?
Do you have any heart conditions or high blood pressure?
Do you have metabolic conditions like diabetes or problems with your stomach/guts?
Are you allergic to common foods or taking many regular medications?

Answer every question to see your result.

What does participation involve?

The detailed involvement for this study isn't specified in the summary provided. However, generally, studies like this often involve a few visits to a research centre. You might be asked to follow specific dietary instructions, consume the protein supplements (either algae or whey), and take part in some exercise sessions. Researchers would then take measurements, which could include blood samples or muscle biopsies (a small sample of muscle tissue), to see how your body is responding to the protein. There would likely be an initial screening visit to check your eligibility, a main study day or days where the protein is given, and follow-up assessments. The total duration of your involvement could range from a single day to several weeks, depending on the study design.

Potential risks and benefits

Taking part in a study like this could offer potential benefits, such as gaining a better understanding of your own muscle health and contributing to scientific knowledge that may help other older adults. You would be closely monitored by medical professionals during your participation. Potential risks are generally minimal in nutritional studies but could include mild discomfort from blood tests or muscle biopsies (if applicable), or digestive upset from the protein supplements. You would be informed of any specific risks in detail before deciding to participate. Importantly, you have the right to withdraw from the study at any time, for any reason, without it affecting your medical care.

Locations (1)

Some site locations are approximate. We're improving this — please verify with the trial team before travelling.

Health and Life Sciences
Verified postcode
Exeter, United Kingdom· Recruiting

Common questions

What is algae protein and why is it being studied?

Algae protein is a plant-based protein source. It's being studied as a potential new way to help older adults maintain muscle health, especially for those who might prefer alternatives to animal-based proteins like whey.

Will I know which protein I'm getting?

In studies like this, participants are often 'blinded' meaning you wouldn't know if you're receiving the algae protein or the whey protein until after the study is over. This helps ensure unbiased results.

What kind of exercise would I need to do?

The study mentions 'post-exercise muscle protein synthetic response', which means you would likely do some form of supervised exercise, probably involving weights or resistance, to stimulate your muscles. Details would be explained fully before you decide to join.

Will I have to change my diet?

You might be asked to follow specific dietary instructions for a period leading up to or during the study, to ensure the results are clear and directly related to the protein supplements being tested.

Is there any cost involved to participate?

Clinical trials generally do not charge participants. In fact, some studies may offer reimbursement for your time and travel, but this would be clearly stated by the research team.

How to find out more

Freyja A.D Haigh, PhD

fh357@exeter.ac.uk +447917608163 Official trial record

Always speak to your GP or specialist before deciding to take part in a study.