"Nutrición deportiva: ciencia en movimiento"

Name: "Nutrición deportiva: ciencia en movimiento"
Uploaded: 2020-07-01T23:49:16.000Z
Duration: 2 h 52 min 57 s

Welcome to the 21st International Conference on Nutrition, Health, and Sports

Opening Remarks

The event marks the formal start of the 21st International Conference on Nutrition, Health, and Sports organized by Vino Triunfo.

Acknowledgment of colleagues from over 50 countries attending the event; gratitude expressed towards the organizing team for their long-standing support.

Recognition of Nidia Beatriz from the Mexican Federation of Sports Nutrition for enhancing the quality of this year's event through collaboration.

Event Structure and Accessibility

Emphasis on providing high-level scientific activities at accessible costs; some events are free to encourage participation.

Welcome extended to all participants, with a reminder that registration is open until tomorrow at reduced prices.

Acknowledgments

Thanks given to international speakers who will share valuable insights for professional development in nutrition.

Appreciation expressed towards sponsors whose support has been crucial for organizing this ambitious project amidst global uncertainty.

Introduction of Key Speakers

Transition to Scientific Activities

Introduction of Margarita Posada as she prepares to lead the first scientific activity following opening remarks.

Highlighting Expertise

Margarita Posada expresses pride in being part of a significant project focused on nutrition and sports health; encourages attendees to maximize learning opportunities during sessions.

First Presentation: "Sports Nutrition - A Science in Motion"

Speaker Introductions

Introduction of Beatriz Boullosa, a renowned sports nutritionist with extensive experience including work with Mexico's national football team and authorship in sports nutrition literature.

Introduction of Dr. Emilia Rodríguez Sánchez, another expert in sports nutrition with an academic background from Stirling University.

Introduction to the Speaker and Event

Background of the Speaker

The speaker has been conducting research in hydration and physiology since 2017 at the University of Stirling, following eight years at the Gatorade Sports Science Institute in Mexico.

She is an anthropometrist (Level 3) with multiple publications in renowned clinical nutrition and sports nutrition journals.

Currently involved in research on hydration, genetic expression influenced by female hormones, and omega-3 supplementation effects on muscle tissue.

Event Structure

The event will include a Q&A session lasting approximately 15 to 20 minutes at the end. Participants are encouraged to use the Q&A button for their questions.

Questions that receive more likes will be prioritized for response due to time constraints.

Opening Remarks

Acknowledgments

The speaker expresses gratitude towards colleagues Eric and Mariano from Nutri Info for their support and friendship during the event's organization.

Thanks are also given to Osvaldo from Cardio Fitness for his contributions, highlighting a collaborative effort despite challenges faced during planning.

Discussion on Sports Nutrition History

Overview of Topics

The speaker introduces her colleague Nidia Rodríguez, emphasizing her admiration for her work as they begin discussing sports nutrition history.

They aim to provide a brief overview of humanity's journey through significant advancements in health science related to food and exercise physiology.

Historical Context

The discussion will cover key findings that contributed to modern sports nutrition while acknowledging many events had to be omitted due to information overload.

Ancient Olympic Games

Significance of Early Olympics

It is estimated that the first Olympic Games occurred around 776 BC, showcasing early formal athletic competitions.

Notably, women were prohibited from participating or even observing these games under severe penalties.

Cultural Importance

The Olympics held immense cultural significance; treaties were often signed between warring cities to allow games without conflict.

Philosophical Insights on Health

Hippocrates' Contributions

Hippocrates emphasized the importance of balance between diet and exercise as foundational for health—an understanding dating back over two millennia.

The Evolution of Sports Science and Nutrition

Historical Perspectives on Energy Balance

The concept of energy balance is highlighted, emphasizing the merit of early thinkers who observed and documented their findings, which modern science has since validated.

Notable contributions from historical figures in sports medicine are discussed, including a prolific galen who authored 80 treatises and over 500 essays on anatomy, physiology, nutrition, and the negative impacts of sedentary lifestyles.

Key Figures in Exercise Physiology

A leap to 1888 introduces Captain Barkley, recognized as the father of pedestrianism (competitive walking), showcasing his athletic feats without contemporary knowledge about health risks.

Barkley's fame stemmed from extraordinary challenges such as walking 130 miles in two days and completing a memorable 100-mile walk over 1,000 hours between June and July 1809.

Impactful Contributions to Anatomy and Physiology

Edward Hitchcock's collaboration with his father led to significant advancements in physical education through their influential treatise on anatomy published in 1860.

Their work was pivotal for establishing Harvard's first department dedicated to anatomy and exercise physiology, promoting physical development among youth.

Controversial Practices in Early Olympic History

James Edward Sullivan's role as an organizer for the 1904 Summer Olympics is examined; he advocated for minimal hydration during marathons despite high temperatures.

This decision resulted in severe dehydration among athletes during the marathon event, leading to it being labeled one of the longest races due to adverse conditions.

Marathon History and Contributions to Exercise Physiology

The Longest Marathon Time

Discusses the longest marathon time recorded at three hours, 28 minutes, and 45 seconds, highlighting that many modern runners achieve better times under less strenuous conditions.

Historical Context of Olympic Participation

Mentions the poor performance rating of a marathon where only 14 out of 32 athletes finished due to dehydration.

Notes the exclusion of women from participating in the Olympics during 1902 by a male official who believed they should not compete or wear swimsuits.

Early Contributions to Exercise Physiology

Recognizes four key figures in exercise physiology and nutrition from early 20th century Norway, particularly Nansen's work on carbohydrates as essential for intense physical activity.

Advancements in Nutritional Science

Highlights Nansen's confirmation that fats are also an energy source during exercise, contributing significantly to metabolic studies.

Discusses further research confirming carbohydrates as primary energy sources for intense workouts, leading to Nobel Prize recognition for contributions related to capillary physiology.

Evolution of Sports Medicine Laboratories

Historical Laboratory Conditions

Describes early sports medicine laboratories established in Germany around 1911, showcasing how military personnel were often subjects due to their need for optimal physical condition.

Equipment and Attire in Early Research

Illustrates the uncomfortable clothing worn by athletes during experiments, including early treadmill designs used at Harvard University.

Key Developments in Nutrition Science (1928 - 1967)

Major Discoveries Impacting Athletic Performance

Introduces Boc’s research on muscle cell function which laid foundational knowledge for understanding athletic performance.

Importance of Carbohydrates Established

Details Christensen and Hansen's findings from 1939 emphasizing a carbohydrate-rich diet as crucial for athletic success; their work remains relevant today.

Breakthrough Techniques in Muscle Research

Introduction of Muscle Biopsy Technique

Discusses Jonas Bergström's pioneering muscle biopsy technique introduced around 1966/67 that revolutionized exercise physiology research by linking carbohydrate intake with glycogen storage.

Explains Bergström’s collaboration with Helmand on low-carb diets followed by reintroduction of carbs—known today as glycogen supercompensation—further advancing nutritional strategies for athletes.

The Evolution of Sports Nutrition

Historical Context and Initial Discoveries

The concept of depleting glycogen reserves before a competition and then following up with a carbohydrate-rich diet was established, which helps in replenishing glycogen stores effectively.

Despite advancements in sports nutrition since 1965, some coaches still adhere to outdated protocols, highlighting the need for updated practices based on current research.

The Birth of Gatorade

In the 1960s, Florida Gators' coaching staff noticed players' performance declined in the second half of games, prompting an investigation into hydration and nutrition.

Dr. Robert Cade was tasked with researching this issue; he developed a drink combining water, electrolytes, carbohydrates, and lemon juice—leading to the creation of Gatorade.

This new beverage significantly improved player performance by restoring fluids and energy during games.

Notable Athletes and Their Strategies

British marathon runner Ron Hill won the European Marathon Championship in 1969 using a unique nutritional strategy that involved no liquid intake during the race but focused on carbohydrate loading beforehand.

Hill's approach included intense long runs followed by moderate training days with low carbs and concluding with high-carb days to maximize glycogen storage.

Ron Hill's Legacy

During his race, Hill maintained pace behind the leader until the last 10 kilometers when he outperformed them due to better glycogen management—a phenomenon known as "hitting the wall."

At over 80 years old, Ron Hill is recognized as a pioneer in running culture; he holds records for continuous daily running over decades.

Contributions from Jake Hostil

Professor Jake Hostil made significant contributions to sports nutrition research; initially a swimmer turned coach, he explored caffeine's ergogenic effects on athletic performance.

His work laid foundational knowledge for understanding how dietary strategies can enhance athletic capabilities.

Insights on Sports Nutrition and Performance

The Role of Carbohydrates in Endurance Sports

A focus on carbohydrate loading is essential for endurance sports, as it can enhance performance. This was notably observed in swimming, where body hair removal reduced water friction.

Despite rigorous training, some athletes may not reach peak performance levels due to physiological differences; this led to investigations into muscle fiber types.

Muscle Fiber Differentiation and Gastric Emptying Studies

Research conducted with Swedish scientists revealed the differentiation of muscle fibers (Type 1 and Type 2), contributing to our understanding of athletic performance.

Significant findings included studies on gastric emptying using a nasogastric tube, which helped determine how substances move from the stomach to the intestines.

Factors Influencing Gastric Emptying

Key factors affecting gastric emptying include osmolarity and temperature of beverages consumed during exercise.

The concentration of drinks impacts gastric emptying rates; higher concentrations can slow down this process.

Contributions to Cardiac Health and Muscle Mass Loss

Investigations also covered cardiac health in older adults and muscle atrophy in astronauts due to microgravity conditions.

The researcher has published over 230 articles, highlighting significant contributions to sports nutrition science since the 1980s.

Evolution of Sports Drinks Industry

The rise of sports drink brands like Gatorade and Powerade in Mexico marked a shift towards innovative hydration solutions for athletes.

Research funded by beverage companies led to critical discoveries about carbohydrate ingestion improving performance during prolonged moderate-intensity exercise.

Findings on Carbohydrate Ingestion Protocols

It was found that drinks with more than 8% carbohydrate concentration could hinder gastric emptying and fluid balance.

Mike Sherman proposed a simplified glycogen supercompensation protocol that eliminated unnecessary intense workouts before carbohydrate loading.

Reevaluation of Pre-Race Training Regimens

Sherman's approach suggested three days of moderate training followed by increased carbohydrate intake without intensive exercise prior to competition.

This method challenged traditional practices, leading many athletes to reconsider their pre-event training strategies.

Controversial Perspectives on Hydration During Exercise

Tim Noakes introduced concerns regarding excessive fluid intake during long-duration events, coining the term "water intoxication," particularly relevant for marathon runners.

Understanding Sodium Concentration Risks

Concerns About Excessive Water Intake

The professor warns that excessive drinking can lead to exercise-induced hyponatremia, highlighting the risks associated with sodium concentration in the blood.

Advancements in Nutritional Science

Introduction of Tracers in Research

In the late 1980s, tracers were introduced to mark atoms in molecules, allowing researchers to track metabolic processes effectively.

Practical Application of Tracers

An example is provided where deuterium is administered to a subject on a treadmill, marking oxygen atoms for tracking metabolism.

Metabolic Analysis Techniques

Collecting Metabolic Data

Researchers collect various samples (urine, exhaled gases, muscle tissue) to analyze how carbohydrates and proteins are metabolized using non-reactive isotopes.

Cost Implications of Advanced Techniques

The double-labeled water method is noted as the gold standard for measuring energy expenditure but is prohibitively expensive at around $800 per day per subject.

Impact of Tracer Technology on Sports Nutrition

Enhancing Understanding of Metabolism

The use of tracers has significantly advanced knowledge about metabolism and energy substrate oxidation in sports nutrition.

Historical Context of Sports Nutrition Research

Evolution of Nutritional Focus

Research from the 1980s laid the foundation for modern sports nutrition terminology and understanding.

Shift Towards Protein Research

Until the 1990s, most research focused on endurance exercises and carbohydrates; protein discussions were minimal despite interest from bodybuilders seeking muscle growth strategies.

Peter Lemon's Contributions to Protein Research

Highlighting Protein Needs for Active Individuals

Peter Lemon emphasized protein requirements for physically active individuals, establishing that they may need up to 100% more protein than sedentary individuals.

Recommendations Based on Activity Type

He advocated for specific dietary recommendations based on whether individuals engaged in endurance or strength sports.

The Role of Creatine in Sports Science

Contributions by Key Scientists

Chris Jarvis and Holman made significant contributions regarding creatine supplementation and its effects on muscle reserves among different dietary groups.

Effects of Creatine Supplementation on Athletic Performance

Impact on Explosive Exercises

Research indicates that creatine supplementation significantly enhances performance in explosive exercises, leading to the 1996 Atlanta Olympics being dubbed the "Creative Games" due to the noticeable benefits athletes experienced from using creatine.

Hydration and Dehydration Insights

Notable contributions by researchers like Col have highlighted the detrimental effects of dehydration on athletic performance, establishing critical hydration recommendations for athletes.

The American College of Sports Medicine's guidelines, influenced by extensive research, emphasize the importance of maintaining proper hydration during exercise.

High-Fat Diets and Athletic Performance

Initial Research Findings

The first formal investigation into high-fat diets for athletes was conducted in 1995, exploring whether a fat-rich diet could provide more energy than carbohydrate-based diets.

Early studies showed that while adaptation to fat as an energy source occurred over time, initial results did not show significant performance differences within the first four weeks.

Long-Term Effects on Endurance

After seven weeks, it became evident that athletes consuming high-carbohydrate diets outperformed those on high-fat diets in endurance exercises, prompting ongoing discussions and research in this area.

Tragic Events and Weight Loss Practices

Health Risks Associated with Weight Loss Methods

In 1997, several young collegiate athletes tragically died due to extreme weight loss practices for sports requiring weight classes. This raised alarms about dangerous dieting methods prevalent among young competitors.

Historical Context of Sports Nutrition

The evolution of sports nutrition is underscored by historical practices that often lacked scientific understanding. Many traditional methods remain unchanged despite advancements in knowledge regarding athlete health and safety.

Contributions from Key Researchers

Kibar's Influence on Sports Nutrition Science

Kibar has made significant contributions to understanding how protein influences muscle hypertrophy. His lab continues to explore various aspects of muscle physiology relevant both to sports and broader medical fields.

Interdisciplinary Research Approaches

Kibar’s work extends beyond athletics; he collaborates across disciplines such as internal medicine and oncology, demonstrating how diet and exercise can prevent muscle mass loss in various populations.

Muscle Loss and Nutritional Strategies in Oncology

Understanding Sarcopenia in Cancer Patients

Discussion on sarcopenia or catabolism, particularly in oncology patients experiencing muscle mass loss. The contributions of this research remain valuable today.

Pioneering Research on Carbohydrate Mouth Rinse

Introduction of Dr. James Carter's pioneering studies from 2004 investigating the effects of carbohydrate mouth rinses, where a solution is swished in the mouth before being expelled.

A review by Carter and colleagues analyzed 15 studies, revealing that 12 showed significant benefits of carbohydrate mouth rinsing for endurance sports performance.

Mechanisms Behind Performance Enhancement

Chambers' study explored how carbohydrate mouth rinsing affects performance without ingestion, using transcranial magnetic stimulation (TMS) to observe brain activity.

Findings indicated that this practice stimulates brain areas associated with well-being and reward, suggesting multiple receptors in the mouth send positive signals to the brain.

Protein Intake Recommendations Post-Exercise

In 2009, a study led by Dan Moyer found that consuming 20 grams of egg protein post-exercise was as effective as 40 grams for muscle protein synthesis.

This research informed recommendations for optimal protein intake after workouts to enhance muscle recovery.

Genetic Factors Influencing Caffeine Response

Between 2012 and 2013, studies began examining genetic variations affecting individual responses to caffeine as an ergogenic aid.

Research identified different genotypes influencing caffeine response, highlighting a genetic component crucial for nutritional interventions.

Evolving Carbohydrate Recommendations

In 2013–2014, Professor Ascri proposed new carbohydrate intake strategies based on exercise duration and type. These recommendations emphasize tailored nutrition based on individual training needs.

Nutrition for Athletes: Key Insights

Carbohydrate Consumption and Training Adaptation

Athletes can consume up to 60 grams of carbohydrates per hour during prolonged exercise (2-3 hours), emphasizing the importance of carbohydrate type for optimal absorption and metabolism.

The concept of multiple transport carbohydrates is introduced to enhance absorption and prevent gastrointestinal complications during intense training.

Nutritional training is highlighted, suggesting that athletes can train their digestive systems to tolerate higher carbohydrate intake, which is crucial for performance.

Relative Energy Deficiency in Sport (RED-S)

A significant document from 2014 discusses Relative Energy Deficiency in Sport (RED-S), evolving from previous understandings related to female athlete triad issues like eating disorders and osteoporosis.

RED-S is not exclusive to women; male athletes can also experience this syndrome, indicating a broader concern regarding energy balance in sports.

Psychological factors are bidirectional; they can trigger RED-S or result from it, highlighting the complex interplay between mental health and physical performance.

Recent Guidelines on Nutrition for Athletic Performance

In 2016, updated nutrition guidelines were published by the Academy of Nutrition and Dietetics, focusing on recovery strategies, competition preparation, and special populations such as older athletes or those training at altitude.

The document recognizes the roles of various professionals in sports nutrition, marking an important step towards integrating nutritional expertise into athletic training programs.

Supplements and Future Directions in Sports Nutrition

The International Olympic Committee released a consensus on dietary supplements for high-performance athletes in 2018, emphasizing scientifically supported supplements that enhance athletic performance.

Future directions include personalized nutrition strategies based on individual athlete goals and genetic factors while exploring molecular mechanisms behind nutritional adaptations during training.

Technological Integration in Sports Nutrition

Advances in technology provide tools like apps and wearables that help monitor energy expenditure and optimize nutritional strategies tailored to individual needs.

Continuous evolution in supplement regulation aims to ensure safety and efficacy while translating scientific findings into practical applications for athletes' diets.

The Evolution of Sports Nutrition

Breakthroughs in Human Potential

Recent advancements in sports science have led to significant milestones, such as breaking the two-hour marathon barrier, raising questions about future possibilities for human performance.

Upcoming Developments in Sports Nutrition

UEFA is set to publish a new position paper on sports nutrition, with Beatriz Bullosa as one of the authors, indicating exciting developments on the horizon.

Encouraging Critical Thinking

The speaker emphasizes the importance of critical thinking when consuming information about nutrition strategies. It’s crucial to evaluate scientific literature and not rely solely on single sources.

Evaluating Scientific Research

Readers are encouraged to look beyond abstracts and summaries of articles. Understanding methodologies and results is essential for applying findings accurately to human contexts.

Practical Application of Nutritional Strategies

When considering dietary strategies like low-carb high-fat diets, it’s important to assess their practicality and effectiveness based on individual circumstances rather than assuming a one-size-fits-all approach.

Cost-Benefit Analysis in Nutrition Strategies

The practicality and cost-effectiveness of nutritional strategies should be evaluated. For instance, while doubly labeled water is an ideal method for measuring energy expenditure, its daily application may not be feasible for athletes.