How important is carbohydrate availability for resistance training?

Carbohydrate availability is generally neutral to good for high-intensity exercise. While global muscle glycogen depletion might seem low (30-35%), specific glycogen depots crucial for muscle contraction are depleted much faster. Therefore, sufficient carbohydrate intake is important for performance.

Can glycine supplementation improve connective tissue health?

Mechanistic and in-vitro studies suggest that glycine, a major component of collagen, can significantly increase collagen synthesis. However, direct evidence of its impact on reducing injury or enhancing recovery of tendons and ligaments in applied human studies is still speculative.

Is it better to take pure glycine than collagen for connective tissue support?

If aiming for high doses of glycine (e.g., 10g+), supplementing with pure glycine is generally more pleasant than consuming 30+ grams of collagen, which becomes bulky and jelly-like when mixed with water. However, collagen/gelatin provides other necessary amino acids like proline and hydroxyproline.

What is the best way to cook food to preserve micronutrients?

Generally, cooking food increases nutritional value compared to eating it raw. Avoid overcooking or cooking for very long durations, as this can break down vitamins. Frying and boiling can cause nutrients to leach into the oil or water, so other methods are often preferable.

How does cooking meat affect health, particularly with searing?

Cooking meat gently, like baking or braising, is generally recommended from a health perspective. Hard searing, while delicious, has some evidence linking it to an increased risk of metabolic disorders, so it's advisable to limit it to occasional meals.

Should I cut weight aggressively to speed up my bulking phase?

Aggressive cutting can lead to more lean tissue loss, negating the goal of a faster bulk. A conservative rate of weight loss is better for preserving lean mass. After a diet, the body preferentially regains fat mass, not muscle, so a slow, gradual bulk is recommended.

What is flywheel training and is it effective for muscle growth?

Flywheel training involves using rotational inertia instead of gravity for resistance. Research suggests it yields similar strength and hypertrophy gains compared to conventional resistance training. It's space-efficient, good for lower body, but can limit exercise variety for advanced trainees.

Is cycling caffeine necessary to maintain its performance-enhancing effects?

Studies indicate that some modest tolerance to caffeine's ergogenic effects develops over time (e.g., 20 days), but the effect doesn't entirely disappear. Regular users still see benefits. Strategies like only using caffeine when needed or abstaining during deload weeks may help restore sensitivity.

Are muscle knots and trigger points real, and what can be done about them?

Muscle knots or trigger points are best defined as sensory phenomena – localized areas that feel tight, uncomfortable, and tender. While specific mechanistic causes (like ischemic crises or myofascial adhesions) are debated, if self-massage provides relief, it's worthwhile. For persistent problems, consult a physical therapist.

What is carcinization in evolution?

Carcinization is a fascinating example of convergent evolution where various decapodal arthropods independently evolve into a crab-like shape. This crab shape has evolved at least five different times, meaning many animals that look like crabs (like king crabs or coconut crabs) are not 'true' crabs.

Key Moments

Breakfast, Glycine, Muscle Knots, and Trigger Points (Episode 48)

Stronger By Science

Education5 min read112 min video

Oct 22, 2020|7,551 views|244|34

Stronger By Science Podcast

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Key Moments

TL;DR

This episode covers breakfast, glycine, muscle knots, caffeine tolerance, and convergent evolution in crabs.

Key Insights

Optimal breakfast composition is less clear-cut than previously thought, with psychological factors potentially playing a significant role in performance.

Glycine supplementation shows potential for collagen synthesis, but more research is needed to confirm its practical benefits for connective tissue health.

Muscle knots and trigger points are real sensory phenomena, and self-massage or foam rolling can be beneficial if they provide relief.

Caffeine tolerance may develop over time, but its ergogenic effects likely don't disappear entirely; intermittent use or breaks can help maintain sensitivity.

Cooking methods generally preserve micronutrients, with boiling and frying having the most potential for nutrient loss through leaching.

Carsonization refers to the convergent evolution of the crab-like body shape in different arthropod groups, highlighting evolutionary adaptation.

BREAKFAST COMPOSITION AND PERFORMANCE

Research on optimal breakfast composition before training presents a complex picture. While some studies suggest a carbohydrate-rich breakfast enhances resistance exercise performance by providing fuel, others indicate that even non-caloric placebo breakfasts can offer similar benefits, possibly due to psychological effects or reduced hunger. A recent study on cyclists also suggested a slight performance advantage from a carb-rich breakfast, even when overall daily intake was matched, hinting at potential psychological influences or nuanced glycogen storage mechanisms. The key takeaway is to avoid training while hungry and consume foods that make you feel prepared and avoid gastrointestinal distress, recognizing carbohydrate availability as generally beneficial, especially for high-intensity exercise.

THE POTENTIAL OF GLYCINE SUPPLEMENTATION

The discussion touches on glycine supplementation, inspired by in vitro studies showing increased collagen production. While these findings are preliminary and require cautious interpretation regarding their direct translation to human health, they suggest a potential role for glycine in supporting connective tissue adaptations. Glycine is a significant component of collagen, and while the body synthesizes it, intake may be below optimal levels for maximizing its functions. Although collagen and gelatin supplements are popular, focusing on glycine could offer a targeted approach, especially considering potential mechanical drawbacks of high collagen intake. However, definitive evidence linking glycine supplementation to reduced injury or enhanced recovery in athletes is still lacking.

UNDERSTANDING MUSCLE KNOTS AND TRIGGER POINTS

Muscle knots and trigger points are explored as sensory phenomena rather than the sole cause of all muscular pain. While extreme claims of them being the root of every muscular issue are dismissed, the existence of localized tender spots within muscles is acknowledged. Potential mechanisms include myofascial adhesions or local ischemic crises, though their prevalence and universal nature are questioned due to poor inter-rater reliability in identification. The practical advice is that if self-massage or foam rolling provides relief, it is beneficial. For persistent or severe issues, seeking professional help from a physical therapist is recommended.

CAFFEINE TOLERANCE AND STRATEGIC USE

The necessity of cycling caffeine for its ergogenic effects is addressed. While studies suggest that tolerance can develop over time, leading to a decrease in the magnitude of caffeine's benefits (potentially by 50-60% over a month in one study), the effects do not entirely disappear. Habitual caffeine users still tend to experience ergogenic responses. Several strategies can help manage tolerance: simply not worrying about it as effects often persist, using caffeine only when needed for specific performance demands, or incorporating periodic breaks, such as during a deload week, to restore sensitivity. Psychological withdrawal symptoms typically subside within a week.

MICRONUTRIENT RETENTION DURING COOKING

Cooking methods' impact on micronutrient content is generally favorable, as cooking often increases nutrient availability compared to raw consumption. However, excessive heat and prolonged cooking times can degrade certain vitamins. Boiling and frying pose a higher risk of nutrient loss due to leaching into the cooking liquid or oil, which is lost if not consumed. Other methods like microwaving or baking are considered more effective at retaining micronutrients. For meat, gentle cooking methods like baking or braising are recommended for health, although searing can enhance flavor but may carry a slightly increased risk of metabolic disorders with frequent consumption.

THE SCIENCE OF CUTTING AND BULKING CYCLES

The effectiveness of aggressive cutting followed by rapid bulking is questioned. Losing weight too quickly can lead to significant lean mass loss, undermining the goal of subsequent muscle gain. Contrary to popular belief, muscle mass does not rebound immediately and preferentially after a diet; there's often a tendency to regain fat mass first. A more effective approach advocated is a conservative cut to minimize lean mass loss, followed by a committed, gradual bulk with a moderate caloric surplus. This strategy aims to spend more time building muscle and less time in potentially counterproductive rapid cut-bulk cycles, avoiding the 'wheel-spinning zone'.

FLYWHEEL TRAINING FOR HYPERTROPHY

Flywheel training shows similar efficacy to conventional resistance training for strength and hypertrophy gains, according to meta-analyses. While initial claims of its superiority were based on flawed study selection, current research indicates it's neither definitively better nor worse. Its main advantage lies in its space-saving design, making it suitable for home gym setups. However, exercise variety, particularly for pressing movements, can be limited. Flywheel training is a viable option, especially for beginners or those with space constraints, but gym access may still be preferable for advanced trainees seeking to maximize exercise selection and potential marginal gains.

CONVERGENT EVOLUTION IN CRABS (CARSONIZATION)

The episode concludes with an exploration of carsonization, the phenomenon of convergent evolution leading to similar body shapes in different species. Specifically, the crab-like form has evolved independently at least five times within arthropods. True crabs represent one lineage, but groups like king crabs, porcelain crabs, and coconut crabs are not biologically classified as true crabs, despite their similar morphology. This concept highlights how evolutionary pressures can drive distinct groups towards similar adaptations to suit specific ecological niches, such as the robust, sideways-moving body plan of a crab.

Mentioned in This Episode

●Supplements

●Products

●Tools

●Companies

●Organizations

●Books

●Drugs & Medications

●Studies Cited

●People Referenced

Nutrition Practices for Training & Health

Practical takeaways from this episode

Do This

Consume a breakfast that curbs hunger and makes you feel prepared for training without GI distress.

Prioritize conservative weight loss rates during 'cuts' to preserve lean mass.

Commit to long-term, gradual bulking phases after achieving a desired lean body fat percentage.

Cook meat gently (baking, braising) for general health benefits.

If using caffeine, consider cycling it during deload weeks to re-sensitize, or only use it when truly needed.

If self-massaging muscle knots provides lasting relief, continue doing it.

For persistent or severe discomfort from muscle knots, seek professional help from a physical therapist.

Avoid This

Train in a fasted state if you are hungry, as it can negatively impact performance.

Base carbohydrate importance purely on global muscle glycogen depletion percentages, as localized depletion matters more.

Engage in rapid cut-rapid bulk cycles, especially if drug-free, due to preferential fat regain and inefficient muscle building.

Overcook food, particularly at very high temperatures for long durations, as it can break down essential vitamins.

Rely on frying or boiling as primary cooking methods if you do not plan to consume the cooking liquids/oils, as nutrients can leach out.

Assume that muscle mass quickly rebounds after a prolonged diet during the initial surplus phase.

Put too much stock in a massage therapist's specific diagnosis of every muscle knot, due to poor inter-rater reliability.

Common Questions

Studies show mixed results; a carbohydrate-rich breakfast can improve performance, but some research suggests a non-caloric 'sludge' can be just as effective, indicating a possible psychological or hunger-related effect. It's best not to be hungry and to eat something that makes you feel prepared.

Topics

Health & Longevity Nutrition & Diet Human Performance Body Composition Exercise Performance Collagen Synthesis Nutrition Strategies Muscle Recovery Caffeine Tolerance Strength Training Science Sustainable Weight Management

Mentioned in this video

Organizations

FDA

The Food and Drug Administration, whose regulations on dietary supplements are debated in the context of inhaled products like the V-Rush vape.

IPF

International Powerlifting Federation, context for Taylor Atwood's record-breaking lift.

Good News Network

A source from which Eric found a piece of good news about gratitude journaling.

University of Central Florida

The institution from which a study suggested that employees who keep a gratitude journal exhibit less rude behavior.

Nature

A prestigious academic journal group that agreed to its first deal for researchers to publish with open access following advocacy for open science.

International Weightlifting Federation

An organization facing corruption allegations and pressure from the IOC to reform due to widespread drug testing failures.

International Olympic Committee

The committee that has pressured the IWF to reform, threatening to remove weightlifting from the Olympics if changes are not made.

USAPL

USA Powerlifting, context for Taylor Atwood's record-breaking lift.

People

Taylor Atwood

A strong lifter who recently broke his own world record in the 74 kg class, totaling 812 kg (1790 lbs) drug-tested, an all-time best without knee wraps.

Radoslav Petkov

Mentioned as the record holder for knee wraps in IPF powerlifting, used to contextualize Taylor Atwood's raw total.

Keith Barr

A researcher known for innovative work on collagen and gelatin supplementation, who provides practical papers on training and nutrition for tendon and ligament health and recovery.

Hank Pym

The inventor in the Ant-Man films, whom the host jokingly accuses of 'fake news' regarding the physics of Ant-Man's powers.

Jared Polis

The governor of Colorado who pardoned approximately 2,700 people with low-level, non-violent marijuana convictions.

Tamás Aján

The former president of the International Weightlifting Federation, ousted due to credible allegations of extreme corruption.

Ursula Papandrea

An American who temporarily replaced Tamás Aján as interim president of the IWF, and attempted reforms but was met with resistance and subsequently ousted.

Mike Irani

A British individual installed as the new interim president of the IWF after Papandrea's ousting and a controversial Thai replacement.

Rick Collins

An individual who has written extensively on what constitutes a dietary supplement, referenced in the discussion about the legality of the V-Rush vape.

Dave Rix

A 61-year-old powerlifter in the 205-pound class who squatted 705 pounds for a triple, remarkably still getting stronger in his 60s and holding records far surpassing others in his age and weight class.

Paul Rudd

The actor who plays Ant-Man, whose theoretical body weight is used in the discussion about Ant-Man's mass.

Supplements

Collagen

A protein widely supplemented, often combined with Vitamin C, to potentially support collagen synthesis, joint health, and pain reduction.

gelatin

A protein similar to collagen, also used in supplementation with Vitamin C for connective tissue support, though it can be difficult to consume in large quantities due to its bulk-forming nature.

Glycine

A non-essential amino acid, about one-third of collagen/gelatin, theorized to be suboptimally consumed and to potentially increase collagen synthesis for joint and connective tissue health.

Vitamin C

A necessary co-factor for collagen synthesis, often recommended to be taken with collagen or gelatin supplements, though typically sufficient in a standard Western diet.

Hydroxyproline

A component of gelatin and collagen, high doses of which theoretically raise concerns about kidney stones, though not observed as an adverse effect in studies.

L-Tyrosine

An amino acid included in the V-Rush pre-workout vape, which can form crystals similar to those found in aged Parmesan cheese.

Studies & Research

Shaw et al. 2017

A study indicating that gelatin or collagen supplementation combined with vitamin C may have positive effects related to collagen synthesis.

Naharudin et al. 2019

A study titled 'Breakfast omission reduces subsequent resistance exercise performance,' which found that a carbohydrate-rich breakfast improved reps to fatigue in resistance-trained men.

Clark et al. 2008

A study contributing to the understanding that gelatin or collagen supplementation combined with vitamin C may positively impact collagen synthesis and related outcomes.

Mélendez-Hevia et al. 2019

A review paper arguing that glycine intake might be suboptimal in typical diets, with a deficit of around 10-12 grams per day for optimal bodily functions, including collagen synthesis.

Lopes et al. 2019

A study titled 'Time course of tolerance to the performance benefits of caffeine,' which longitudinally investigated caffeine tolerance and found modest tolerance developed over a 20-day period.

Metcalf et al. 2020

A study titled 'Omission of a carbohydrate-rich breakfast impairs evening endurance exercise performance despite complete dietary compensation at lunch,' showing a small performance advantage for cyclists who had breakfast even with later carbohydrate compensation.

Mclinden et al. 2011

Another study mentioned in the context of collagen and gelatin supplementation with vitamin C, showing potential positive effects on collagen synthesis.

Media

Ant-Man and the Wasp

The follow-up documentary film to Ant-Man, referenced in the discussion about the character's mass conservation.

Ant-Man

A Marvel character whose powers of shrinking and growing are debated in terms of mass conservation, with the hosts arguing his mass must decrease when he shrinks due to his ability to ride ants.

Drugs & Medications

Advil

An over-the-counter pain reliever mentioned as a way to manage caffeine withdrawal headaches.

Concepts

Bod Pod

A device used for body composition measurement, which the host previously doubted as a 'gold standard' but a Reddit user provided a reference for it being advertised as such.

Companies

BulkSupplements.com

An online retailer of supplements, promoted with a discount code for listeners.

Products

V-Rush Pre-Workout Vape

A pre-workout marketed as a vape, criticized for being severely underdosed and potentially illegal by FDA standards.