Jorn Trommelen, PhD Profile picture
Jul 12 9 tweets 4 min read Read on X
Protein distribution: beneficial, detrimental, or inconsequential?

Our response to commentary.

❌Not eating =/= fasted state
🥩Protein amount vs protein distribution
✅Practical recommendations

A 9-part thread. 🧵👇 Image
The concept of protein distribution suggests that how you distribute your meals throughout 24 hours strongly impacts your overall anabolism.

There are contrasting lines of thought of what meal frequency is preferred for various health or athletic outcomes.

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In intermittent fasting or time-restricted feeding, food is consumed in a relatively short feeding window.

The goal is to be in a fasted/catabolic state, which is believed to be healthy. For example, it is thought to speed up the removal of damaged proteins (autophagy).

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However, not eating does not equal being in a fasted state.

Protein will still be digesting, depending on the amount and type of protein in your last meal (> 12 h).

In other words, not eating for 12 hours does not necessarily mean you have spent any time in a fasted state.

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In sports nutrition, the opposite strategy is applied:

eat multiple meals out over the day to optimize anabolism. The main thought here is that the anabolic response to a meal is only short-lived

(although our recent work STRONGLY challenges this).

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In practice, most protein is consumed as whole-food mixed meals that are slowly digested and will sustain high levels of plasma amino acids and anabolism throughout the day...

...regardless of meal frequency.

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While there is some evidence that protein distribution may impact anabolism, the majority does not support it.

In fact, even intermittent fasting (supposedly an extreme model of poor distribution) has no clear detrimental impact on muscle loss.

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Thus, in practice, athletes can be flexible with their protein intake distribution.

Our recommendations for athletes who still want to adhere to the distribution concept “just in case”:
- adding a pre-sleep protein meal
- see below for per-meal dosing recommendations:

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In conclusion:
The total amount spent in an anabolic-fed state is likely more dependent on total protein intake than meal distribution.

Our commentary:


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pubmed.ncbi.nlm.nih.gov/38986499/

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More from @JornTrommelen

Dec 19, 2023
Our new work:
No upper limit to the anabolic response to protein ingestion?

Challenges current views on:
1⃣Dose-response relationship
2⃣"Excessive" protein getting oxidized
3⃣Protein distribution
4⃣MUCH more!

Paper:


1/10 🧵 cell.com/cell-reports-m…
Image
It is generally accepted that a single bolus of 20 g protein results in a near-max stimulation of muscle protein synthesis in healthy young adults.

Excessive protein is thought to be oxidized.

This is the basis for the recommendation to distribute daily protein intake.

2/10 Image
I was skeptical:

1⃣Meal frequency does not appear to strongly impact muscle mass in chronic studies

2⃣Some animals consume infrequent but GIGANTIC meals (e.g. snakes)

3⃣MPS studies typically seem too short to allow large amounts of protein to be fully digested

3/10 Image
Read 10 tweets
Mar 3, 2023
Does the ketogenic diet increase fat loss?

A thread 🧵👇

#keto #dieting #fatloss
The ketogenic diet restricts carbohydrates with the purpose of lowering insulin levels. Insulin is a hormone that is involved in fat metabolism. Therefore, some suggest that a ketogenic diet is very effective for fat loss.

2/
This study investigated whether a ketogenic diet increases fat loss compared to a high-carbohydrate diet in overweight and obese men.

3/
Read 9 tweets
Mar 1, 2023
Our new paper:
Pre-sleep Protein Ingestion Increases Mitochondrial Protein Synthesis Rates During Overnight Recovery from Endurance Exercise: A Randomized Controlled Trial

Open access link:
link.springer.com/article/10.100…

A thread 🧵👇

#protein #casein #whey Image
We have previously shown that pre-sleep protein ingestion improves overnight myofibrillar protein synthesis.

In addition, we have shown that long-term pre-sleep protein supplementation improves muscle mass and strength gains.

2/ Image
Our new study had several study novelties:

- endurance exercise was performed
- mitochondrial protein synthesis was assessed
- whey and casein protein were compared

3/ Image
Read 9 tweets
Feb 23, 2023
Can resistance training counteract the adverse effects of androgen deprivation therapy?

A thread 🧵👇

#resistancetraining #prostatecancer #ADT
Prostate cancer is one of the most common types of cancer. An effective treatment is androgen deprivation therapy (ADT), which lowers testosterone levels to castration levels. However, such low testosterone levels tend to result in a loss of muscle mass and strength.

2/
Our study investigated the effect of resistance training with or without protein supplementation on muscle mass and strength in prostate cancer patients undergoing ADT.

3/
Read 9 tweets
Feb 22, 2023
Can alcohol consumption affect muscle growth?

A thread 🧵👇

#alcohol #muscleproteinsynthesis #recovery Image
Exercise and protein ingestion are the main factors that stimulate muscle protein synthesis (the main process driving muscle adaptations such as growth).

2/ Image
It has been reported that athletes are more likely to consume excessive amounts of alcohol, especially as part of binge-drinking practices in team sports. Can these practices affect muscle protein synthesis?

3/ Image
Read 8 tweets
Feb 9, 2023
Do older people need more protein following exercise?

A thread 🧵👇

#aging #healthyaging #muscle
Muscle growth occurs when muscle protein synthesis exceeds muscle protein breakdown. Resistance exercise stimulates both muscle protein synthesis and breakdown. Ingestion of protein further increases muscle protein synthesis and is needed to achieve positive protein net balance.
In young adults, 20 g of high-quality protein seems optimal to stimulate post-exercise muscle protein synthesis. However, is this also true for older adults?

3/
Read 7 tweets

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