Key Moments
Beta-Alanine, Training Frequency, and Strength for Hypertrophy (Episode 59)
Key Moments
Podcast covers beta-alanine research, training frequency, strength for hypertrophy, and exercise modifications.
Key Insights
New research suggests combining carnosine and anserine may offer acute benefits for high-intensity exercise with fewer side effects than carnosine alone.
Beta-alanine supplementation builds muscle carnosine over time; washout periods to baseline can take up to 16 weeks.
For well-trained individuals, training frequency has minimal impact on strength gains when total weekly volume is equated.
Increased strength capacity relative to muscle mass does not appear to significantly enhance future hypertrophy.
Modifying incline, range of motion, grip, and using tools like dumbbells or medicine balls can help manage pressing exercise-related pain.
Non-nutritive sweeteners, compared to sugar, are associated with modest body weight and BMI reductions and are comparable to water or no intervention.
ADVANCEMENTS IN SUPPLEMENTATION AND TRAINING RESEARCH
The episode kicks off with exciting Stronger By Science updates, including new coaches and a developing diet app. Eric Trexler delves into novel research on beta-alanine and related compounds. He explains that while beta-alanine builds long-term muscle carnosine for buffering, supplementing with a combination of carnosine and anserine might offer acute performance benefits with fewer side effects like paresthesia. This strategy aims to increase blood levels of these histidine-containing dipeptides before exercise, potentially enhancing performance during high-intensity efforts. The conversation also touches on the extensive washout period for beta-alanine, suggesting it takes around 16 weeks for muscle carnosine levels to return to baseline after cessation of supplementation.
TRAINING FREQUENCY AND STRENGTH'S ROLE IN HYPERTROPHY
Greg Nuckols presents research exploring the relationship between strength, hypertrophy, and training frequency. A meta-analysis indicates that for trained individuals, varying training frequency from once a week to nine times a week per lift has little to no impact on strength development, provided total weekly volume is equated. However, practical constraints may still favor higher frequencies for some individuals who benefit from higher total volumes. Furthermore, research presented suggests that while building muscle mass can increase strength potential, being stronger relative to one's muscle mass does not necessarily enhance future hypertrophy gains.
UNDERSTANDING EXERCISE STICKING POINTS AND MOVEMENT MODIFICATIONS
Further research insights include an analysis of the 'sticking region' in the back squat, highlighting that peak deceleration, where the least force is applied, defines the sticking point. This research indicates a shift towards more hip dominance and decreasing knee extensor contribution within this region. Practical advice is offered on modifying pressing exercises to manage elbow and shoulder pain. Techniques like incline presses with dumbbells, reduced range of motion on Smith machine presses, using dumbbell grips for push-ups, and single-arm medicine ball push-ups are suggested for safer and more effective pressing.
THE HISTORY AND IMPACT OF RESEARCH METHODOLOGIES
The podcast touches upon the historical context of strength training research, noting a significant paper cataloging studies from 1894 to 1979. It highlights trends in authorship, with single-author papers being common in older research compared to the multi-author papers prevalent today. This shift raises questions about the evolving nature of scientific collaboration and publication. The discussion also briefly covers a study on the impact of COVID-19 measures on training behaviors, finding that a large majority of individuals continued training despite gym closures, a testament to their dedication.
NON-NUTRITIVE SWEETENERS AND EXERCISE BEHAVIOR
A meta-analysis on non-nutritive sweeteners suggests they have a small positive impact on body weight and BMI, particularly when compared to sugar. The effects were comparable to water or no intervention. While the meta-analysis primarily included aspartame, a single study on sucralose showed a notable positive effect. The hosts emphasize that concerns about compensatory eating behavior or negative glycemic responses to artificial sweeteners are largely unsupported by longitudinal research, and they can be helpful tools for dietary adherence.
GENERAL FITNESS AND POTENTIAL PITFALLS
The episode's Q&A segment addresses the 'most ludicrous programming' seen, with hosts sharing personal anecdotes of extreme or ill-advised workouts. They also discuss the Presidential Fitness Awards, concluding that the program's discontinuation was likely a positive step, as it could create negative associations with exercise for some children and often lacked actionable follow-up interventions. The hosts suggest that strength and conditioning should ideally be opt-in activities focused on positive reinforcement and personalized programming, rather than mandatory, potentially shame-inducing tests.
Mentioned in This Episode
●Supplements
●Products
●Software & Apps
●Companies
●Organizations
●Books
●Concepts
●People Referenced
Common Questions
Beta-alanine combines with histidine to form carnosine, which is stored in muscles. Carnosine facilitates pH buffering during high-intensity glycolytic exercise, helping to sustain performance in activities like sprints or short-rest period work lasting a few minutes to about 10 minutes.
Topics
Mentioned in this video
An existing nutrition logging app that Greg found clunky and annoying to use, leading to the development of their own app.
Another podcast by Michael(s) mentioned as a potential source for discussion on the Presidential Fitness Test, but it doesn't exist anymore.
Mentioned as probably the most well-known DARPA-funded thing.
A dipeptide formed from beta-alanine and histidine, stored in human muscles for pH buffering and performance benefits, but rapidly broken down in blood via human serum carnosinase one.
A methylated analogue of carnosine that is less susceptible to breakdown by human serum carnosinase one, being studied for acute supplementation in combination with carnosine.
An amino acid that sometimes has concerns about competitive inhibition with beta-alanine, but recent research alleviated these concerns at typical dosing.
A supplement that effectively facilitates buffering and elevates blood bicarbonate levels, considered a potentially more efficacious route for acute buffering than carnosine/anserine mixtures.
A supplement that combines with histidine to form carnosine, stored in muscles to facilitate pH buffering during high-intensity exercise.
A well-known supplement, mentioned alongside beta-alanine as a compound whose research Roger Harris pioneered.
The podcast and coaching platform entity, actively hiring new coaches and offering training and nutrition services.
A website used as a source for information about the discontinuation of the Presidential Physical Fitness Test.
A very good organization focused on science-based physical therapy and rehab, offering a physical therapist locator tool.
A funding body backed by the US armed services that provides grants for basic science research, hoping for military applications, famously funding the internet.
A researcher known for cool body composition, nutrition, and metabolism work, frequently discussed on the podcast.
A pioneering researcher in creatine and beta-alanine literature, considered a 'big dog' in sport nutrition research, who mathematically modeled carnosine saturation.
A researcher in the UK under whom Patroclus, a new Stronger by Science coach, is pursuing his PhD.
Former US President who initiated the Presidential Physical Fitness Test after being presented with discouraging fitness data comparing American and European children.
A non-nutritive sweetener (brand name Splenda) for which only one study was included in the meta-analysis, but that study showed the largest positive effect size on body weight.
A non-nutritive sweetener that is the subject of most research in the field, showing a small positive impact on body weight compared to sugar.
A brand name for the artificial sweetener sucralose, which the speaker prefers generic versions of.
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