Module 7 - Nutritional Ergogenic Aids Flashcards
What is an ergogenic aid?
- Ergo = “work”
- Genic = “to generate”
- Substances, products, or techniques that enhance physical performance
- May take many different forms
- Dietary supplements are only one form of ergogenic aid
- Many ergogenic aids are or may contain prohibited substances per World Anti-Doping Agency (WADA) Code
What are the types of ergogenic aids? Describe them and give examples
What is a nutritional supplement?
- Vitamins
- Minerals
- Herbs or other botanicals
- Amino acids
- Other dietary sources
- Any concentrate, metabolite, constituent, extract, or combination of these ingredients
- Not all nutritional supplements have an ergogenic effect
Is the dietary supplement market big?
YES! The global dietary supplement market in 2019 was estimated at ~124 billion in sales worldwide (not even looking at pharmacological agents)
What are the top supplements used by athletes?
- Multivitamins
- Vitamin C
- Protein products
- Sports drinks
- Sports Bars
- Energy drinks
How many athletes use dietary supplements?
58-62% use some sort of dietary supplement. Costly!!
How should you council an athlete who has supplement use?
Make it a safe, open conversation. Want to know what they are taking and not be condescending!
How are sport supplements regulated by the government?
- Government of canada is responsible for protection of the public
- Through legislation, Health Canada and the Canadian Food Inspection Agency are given the authority to limit the sale of products, including drugs, food products, natural health products, and health supplements
- All Canadians are subject to federal legislation that controls the sale of many ergogenic aids
- Athletes are also subject to the WADA code that limits the use of numerous ergogenic aids to prevent cheating and harm to athlete health
What is WADA and why was it established?
- The world anti-doping agency
- Foundation initiated by the International Olympic Committee
- Established to promote, coordinate, and monitor the fight against drugs in sports
What does WADA do?
- Develops the policies and procedures for limiting the use of performance enhancing drugs and other strategies (e.g. banning masking agents like glycerol)
- The WADA code
→ Athletes in most sports are governed by the WADA Code either directly or indirectly
→ Athletes who violate the WADA Code can be banned from competition
What can positive drug tests result in?
- Loss of scholarship
- Competition bans
- Stripping of medals
- Loss of sponsorship
- Monetary fines
What are the three main safety issues with taking supplements?
- Supplements do not need to be proven safe or effective before entering the market (Not enough oversight)
- Good manufacturing practices are difficult to implement, monitor, and enforce (especially on a global scale)
- Funding to investigate complaints about sport supplements is very limited and enforcement is challenging
How are conventional sport products regulated? What does this mean?
- Conventional sport products are typically regulated as “foods” not “drugs”
- Fluid replacement beverages, sport gels, protein powders, and meal replacement drinks
- Should have a nutrition facts panel or nutrient information on the label
- Burdon of proof of efficacy is lower than that required for pharmaceutical products
How are non conventional sport products regulated and what are they?
- supplements, bars, gels, sport “beans”, tablets and capsules, amino acids preparations, energy drinks, and vitamin-mineral enhanced waters
- Regulated as dietary supplements or licensed natural health products
- Will have a natural health product number (NPN) or a Drug Identification Number (DIN) on the label if they are legally approved for sale in Canada
Why should you still be careful with nutritional ergogenic aids that have passed regulation?
- Regulation of nutritional ergogenic aids and supplements in Canada is very loose
- Unapproved, ineffective products can still be sold!
- Even approved products are not risk free:
→ Can be toxic if taken in excess (e.g. iron)
→ Can interact with other supplements, medications, and foods - Remember, natural does not mean safe
Define Off-Label Use
- The prescription or use of a drug or NHP for a purpose that has either not been approved by Health Canada (drugs) OR is being used for a purpose that is not the stated condition of use (NHP)
- E.g. Human growth hormone is being taken to promote muscle gain in an otherwise healthy adults
Why is off-label use dangerous?
- There can be no guarantee of safety or efficacy when a drug or NHP is used as off-label
What is Omnitrope used for? What is this an example of?
- Licensed for sale in Canada for the treatment of HGH deficiencies
- It is not licensed for use as an adjunct for sport training in athletes
- Growth hormone is in the category of Anabolic Agents on the WADA prohibited list and is prohibited at all times and for all levels of athletes, including elite, junior, and masters-level athletes
- This unapproved use of an approved drug is an example of off-label use
Will the label on a sport supplement always be correct?
NO - subject to undeclared ingredients and contamination
- The addition of undeclared ingredients to seemingly harmless sport supplements is relatively common
- E.g. Anabolic steroids added to “muscle gain” products
- This is a concern for eite athletes because undeclared ingredients in a supplement may lead to a positive doping test
Give an example of an athlete using a supplement that had undeclared ingredients/contamination
- Jessica Hardy (US Swimmer) was projected to win gold medal at Beijing 2008
- Took Advocare Arginine Extreme for strength and muscle mass gain. Looked up product, consulted with nutritionist/psychologist, contacted company
- Failed drug test bc of clenbuterol (anabolic steroid) that is used for veterinary medication for asthma in horses
- Clenbuterol from contamination
- Banned from 2008 Olympics and had 1 year suspension
Are undeclared ingredients common?
Yes! Recalls of 65 dietary supplement products sold on bodybuilding.com because of undeclared ingredients. (US FDA partnership)
Why would companies add undeclared ingredients?
- Without the addition of undeclared ingredients there is no effective outcomes. Nobody will buy the product if it doesn’t work
- E.g. Ultra Mass Stack - build slabs of lean hard muscle, increase musccle mass, strenght, and sex drive. Undeclared product = Trenbolone
How often are NEA contaminated?
- 2001 IOC international study - 15% of 634 non-hormonal supplements have undeclared steroids
- 2007 USA study - 25% of 58 US supplements have prohibited steroids and 11% contained undeclared or prohibited stimulants
- 2008 UK study of 152 supplements - 10% contaminated with steroids or supplements
What is inadvertent doping?
- Ingestion of substances that unbeknownst to the athlete can cause a positive test for doping
- E.g. creatine supplement containing undeclared anabolic steroids
What are the causes of inadvertent doping?
- Ignorance of what substances are banned
- Names in ingredients list are not recognized
- Manufacturer may not list all ingredients (Off-label)
- Product could be contaminated
What is strict liability?
- Cornerstone of WADA Code, strictness depends on governing body (NCAA less strict than WADA)
- Athletes are responsible for any prohibited sustance that may be found in their sample (regardless of how it got there); and
- Athletes who test positive for a prohibited substance, may face sanctions regardless of how the prohibited substance got into their body
- Athletes must declare medications they are using and can be exempt on a medical need
Give an example of strict liability with an athlete
- Silken Laumman (Canadian rower) tested positive for banned stimulant at 1995 Pan Am games, after taking a over-the-counter cold remedy
- Her and her 3 teammates stripped of medals
What is the controversy with Kamila Valieva?
- Russian figure skater tested positive for the banned metabolic modulator, trimetazidine at the 2022 Winter Olympic games
- Trimetazidine increases cardiac output, improves oxygenation, and reduces fatigue associated with a higher heart rate
- The IOC and Xourt of sport arbiration allowed her to compete at the 2022 Winter Olympics and to retain the gold medal she won in the skating teams competition
- This violates strict liability and remains a controversial decision
Are natural health products safer?
- Not necessarily safer or better
- People think natural is better and more pure and superior likely because and can effect their health
- Money people spend on these NHP could be used for other things like massage, coaching, a dietitian
What issues may occur due to NEA?
- cardiovascular issues
- Renal issues
- Hepatic Issues
- Seizures
- Medication interactions
- Exceeding micronutrient ULs
What are the cardiovascular issues associated with NEA?
Hypertension, cardiac issues and death have all been associated with dietary supplement use
What are the renal issues associated with NEA?
- Kidney damage can occur, especially with supplements that contain herbs (toxic)
~________ of drug induced liver injuries are from dietary supplements
20% - This is an example of a hepatic issue
Why are seizures a concern with NEA?
- Acute neurotoxicity can occur after ingestion of dietary supplements with sympathomimetic properties (e.g. Yohimbe Extract - known to be neurotoxic)
Why are medication interactions a concern with NEA?
- Athletes are not always truthful with healthcare providers when discussing supplements. There can be potential interactions between supplemental ingredients and medications
What are Tolerable Uppler limits?
UL are the highest level of nutrient intake that is likely to pose no risk of adverse health effects for almost all individuals in the general population. As intake increases above the UL, the risk of adverse effects increases
Should we be more worried about water soluble or fat soluble vitamins?
- Excess intake of the water soluble vitamins is less of a concern because they are generally excreted in the urine when in excess
- In some instances, supplementation with certain water soluble vitamins can be toxic
- Fat soluble vitamins as well as minerals are not easily cleared by the body and can become toxic at high levels
- Symptoms of toxicity include but are not limited to: changes to vision, bond and joint pain, skin changes, muscle weakness, diarrhea, increased risk of bleeding, skin flushing, heart arrythmias