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Beta-Alanine, Training Frequency, and Strength for Hypertrophy (Episode 59)

Stronger By ScienceStronger By Science
Sports3 min read148 min video
Jun 3, 2021|23,585 views|319|27
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TL;DR

Podcast covers beta-alanine research, training frequency, strength for hypertrophy, and exercise modifications.

Key Insights

1

New research suggests combining carnosine and anserine may offer acute benefits for high-intensity exercise with fewer side effects than carnosine alone.

2

Beta-alanine supplementation builds muscle carnosine over time; washout periods to baseline can take up to 16 weeks.

3

For well-trained individuals, training frequency has minimal impact on strength gains when total weekly volume is equated.

4

Increased strength capacity relative to muscle mass does not appear to significantly enhance future hypertrophy.

5

Modifying incline, range of motion, grip, and using tools like dumbbells or medicine balls can help manage pressing exercise-related pain.

6

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.

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.

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