Friday, December 09, 2022

Potato protein may be as good as milk for muscle protein synthesis

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Potatoes contain small amounts of protein and are a good source of amino acids. Yuji Sakai/Getty Images
  • previous research 8 have reported that animal protein may do a better job than plant-based alternatives when it comes to the synthesis of muscle protein.
  • Studies have shown that potatoes can provide sufficient amounts of all the essential amino acids needed by humans but they have failed to confirm their muscle-building effects.
  • Researchers in the Netherlands have now found that a protein-concentrated powder derived from potatoes can support muscle repair and growth as well as animal milk protein in men.

A shift in favor of more plant-based foods is rapidly gaining momentum within the medical and athletic communities around the world. However, some individuals continue to express concern about the use of plants as protein sources in sports nutrition products.

Sports nutritionists have long believed that certain compounds in plants can reduce the bioavailability of protein. In addition, some research suggests that plants do not provide all of the essential amino acids available from meat-based sources.

A new study challenges these assumptions, suggesting that the humble potato may be as reliable a protein source as animal milk.

The research, which was partially funded by the Coalition for Potato Research and Education, appears in Medicine and science in sport and exercise,

Researchers from Maastricht University in the Netherlands conducted a study to evaluate how potato proteins promote anabolic responses that increase muscle mass.

Dr Luke Jesse van Loon, Professor of Physiology of Exercise and Nutrition at Maastricht University Medical Center, was the principal investigator.

speak with medical news todayDr Van Loon shared:

“The [study’s] The main result is that potato-derived protein ingestion can increase muscle protein synthesis rates at rest and exercise, and this response does not differ from that of ingesting a similar amount of milk protein.

,[P]Lent-derived proteins may be as effective as high-quality animal-derived proteins for stimulating muscle protein synthesis rates in vivo in humans.”
— Dr. Luke JC van loon

Muscle protein synthesis (MPS) is the process by which amino acids become skeletal muscle proteins. Protein ingestion and exercise are important for MPS to maintain and build skeletal muscle.

Protein consumed during recovery from exercise can increase MPS rates. These rates vary by protein source.

Potato, the world’s third most consumed crop, contains only 1.5% protein on a fresh weight basis. However, a protein concentrate can be extracted from the potato juice residue that is used for feed or discard.

Dr. van Loon and his co-authors found that the amino acid composition of potato protein is similar to?Milk protein closely. They also noted that the tuber “provides sufficient amounts of all individual essential amino acids in accordance with the WHO/FAO/UNU amino acid requirements, with no apparent deficiency.”

The team hypothesized that consuming potato protein concentrate may increase MPS rates at rest and during recovery from exercise.

They also hypothesized that potato protein might induce an MPS response similar to milk protein.

To test their ideas, Dr. Van Loon and his team recruited 24 healthy, active men for a trial conducted between April 2018 and February 2020. The age of the participants ranged from 18 to 35.

All subjects ate a standard meal and fasted the night before the test days. Dr Van Loon told MNT that the special diet and fasting protocol were designed so as not to “influence the anabolic response to protein ingestion the following day.”

The researchers inserted a catheter into each participant’s upper arm for an amino acid infusion, which served as a tracer to measure MPS rates. They also inserted a second catheter into the opposite arm for a blood sample to measure the concentrations of blood amino acids, insulin, and glucose.

Young male participants worked on a seated knee-extension machine and leg press with increasing load.

After the subjects rested, the researchers took blood samples and muscle biopsies to determine MPS rates at rest and during exercise recovery.

Then, researchers randomly assigned participants to drink drinks with 30 grams (about 2 1/2 teaspoons) of potato protein or milk protein. He followed it up with more blood samples and muscle biopsies.

The study concluded that “[…] Ingesting 30 grams of protein during recovery from exercise was shown to strongly stimulate muscle protein synthesis,” Dr. van loon,

This double-blind study allowed the researchers to observe MPS in exercised and non-exercised muscles. It also includes research demonstrating how potato protein can benefit exercise and recovery.

However, the present study also had several limitations.

The study sample size was quite small. Dr van Loon acknowledged that “further dose-response studies in a wider population are undoubtedly needed”.[…],

In addition, only men were included in the trial. Researchers from a 2021 study cautioned that gender differences in body build, hormones and metabolism could make it difficult to apply research from men to women.

Additionally, participants were young adults whose anabolic resistance to skeletal muscle protein ingestion may differ from that of older individuals. However, the above research noted that older and younger male athletes may share similar protein metabolisms.

As the market for protein supplements continues to expand, some researchers say that these products fall short of whole foods in terms of nutritional benefits.

Dr. Stuart Phillips, a professor and Tier 1 Canada Research Chair in Kinesiology at McMaster University in Ontario, who was not involved in this study, believes that “[…]Food is a complement.”

In an interview with Auburn University, Dr. Phillips acknowledged that the biggest appeal of protein supplements is their convenience.

he pointed to 2015 study suggesting that people who obtain protein from foods “have a higher nutrient density in their diets.”

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