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2. Ergogenic aids fall into two categories: Physical
cheering, music, altitude training, sauna and massage, psychology etc.
Chemical and pharmacological
anabolic steroids, stimulants, narcotic analgesics, beta blockers, diuretics, amino acids, vitamins etc.
3. Ergogenic Aids: History of Use Ancient Greek Olympians ate mushrooms; As long ago as the third century BC, there were reports of Olympians taking potions of go-faster "ground-up hooves of ass boiled in oil and rose-hips"
Aztec athletes ate human hearts
In late 1800s, European cyclists took heroin, cocaine "speedballs," and ether-soaked sugar tablets—first drug-related fatality in 1886
Winner of 1904 Olympic marathon took strychnine and brandy during race
Winner of 1920 Olympic 100-m dash drank sherry with raw egg before race
Development and use of anabolic steroids in 1950s
In 1960 Olympics, Danish cyclist died in road race from amphetamine overuse
In 1967 Tour de France, famed British cyclist, Tim Simpson, also died from amphetamine overuse
Olympic testing began in 1968 for stimulants
Victor Conte, Jr., BALCO founder, convicted in 2004 of providing designer steroids/supplements for numerous athletes in professional football, baseball, and track and field
4. Ergogenic Aids: History of Use Development of Dianabol
East German female swimmers of 1970s-1980s
Cyclists deaths (1987-1990)
Chinese female swimmers (1992-1994)
1998 Tour de France John Ziegler, US team physician developed Dianabol after viewing Russian steroid use at 1956 World Championships in Moscow
Picture of Yuan Yuan, a Chinese swimmer, being removed after bringing 13 packets of banned substance (somatotropin) to 1997 World ChampionshipsJohn Ziegler, US team physician developed Dianabol after viewing Russian steroid use at 1956 World Championships in Moscow
Picture of Yuan Yuan, a Chinese swimmer, being removed after bringing 13 packets of banned substance (somatotropin) to 1997 World Championships
5. 27 Chinese athletes removed from team
Bulgarian and Romanian weightlifting teams expelled
USATF relinquished drug testing
alleged >12 positive tests not reported previous 2 years Picture of Andreea Ruducan, Romanian gymnast who won gold medal in Sydney Olympics only to be stripped of medal after testing positive for ephedrinePicture of Andreea Ruducan, Romanian gymnast who won gold medal in Sydney Olympics only to be stripped of medal after testing positive for ephedrine
6. Desire to Win by Elite Athletes: Fear of disgrace and loss of personal income is greater than fear of harm 195 of 198 athletes would take illegal drug if assured of not being caught
50% would take illegal drug even if side effects were lethal in 5 years
7. Ergogenic aids: placebo effect Left graph—2% strength increase of 6 male trained weightlifters after 7 weeks; those who made the greatest gain would be accepted into the anabolic steroid study.
Right graph—10% strength increase of 6 trained weightlifters after being told they were taking Dianabol but were actually given a placebo.Left graph—2% strength increase of 6 male trained weightlifters after 7 weeks; those who made the greatest gain would be accepted into the anabolic steroid study.
Right graph—10% strength increase of 6 trained weightlifters after being told they were taking Dianabol but were actually given a placebo.
8. Increasing Muscle Mass Anabolic steroids
Growth hormone
Protein supplements Picture of Ben Johnson, Canadian sprinter who won 100-m gold medal in Barcelona Olympics in 9.79 s in WR time, but was later disqualified for testing positive for stanazololPicture of Ben Johnson, Canadian sprinter who won 100-m gold medal in Barcelona Olympics in 9.79 s in WR time, but was later disqualified for testing positive for stanazolol
9. Protein Supplementation Research suggests that athletes have 2-3X RDA higher protein needs
Typical American athletes already consume this amount
Increased carbohydrate intake likely more important to increasing muscle mass Currently, the RDA for protein is 0.8 g/kg/day. Thus, an 80 kg person would require a daily protein intake of 64 grams. The RDA does not recognize any additional protein need for individuals who participate in a regular daily exercise program. Furthermore, this value has not been updated since 1989, despite research suggesting that athletes require higher protein needs.
Currently, the RDA for protein is 0.8 g/kg/day. Thus, an 80 kg person would require a daily protein intake of 64 grams. The RDA does not recognize any additional protein need for individuals who participate in a regular daily exercise program. Furthermore, this value has not been updated since 1989, despite research suggesting that athletes require higher protein needs.
10. Anabolic Steroids Male hormones have anabolic effects
accelerated growth of muscle, bone, and red blood cells
Anabolic steroids are synthetic relatives to testosterone
high-volume training needed for beneficial effects
inhibit protein breakdown
11. Anabolic Steroids: Secondary Effects Androgenic effects
males: testicular atrophy, breast development, ? sperm count, acne
females: masculinization, facial & chest hair growth, deepening of voice, acne
Additional effects
aggressiveness, mood swings, altered glucose metabolism, thyroid, lipid profiles
12. Commonly Used Anabolic Steroids Testosterone
Stanazolol
Nandrolone
DHEA
Androstenedione C.J. Hunter, American shot putter, who testing positive 4X during summer of 2000 for nandrolone.C.J. Hunter, American shot putter, who testing positive 4X during summer of 2000 for nandrolone.
13. DHEA and Androstenedione: Precursors of Testosterone DHEA and androstenedione are androgenic hormones that are precursors to testosterone. Because of this, supplementation is thought to increase the body’s production of testosterone through natural means. DHEA and androstenedione are androgenic hormones that are precursors to testosterone. Because of this, supplementation is thought to increase the body’s production of testosterone through natural means.
14. In addition to being converted into testosterone, androstenedione is a precursor for estrogen. Studies suggest that, at least in college-aged men with normal testosterone levels, the body favors conversion of exogenous androstenedione into estrogens.
In addition to being converted into testosterone, androstenedione is a precursor for estrogen. Studies suggest that, at least in college-aged men with normal testosterone levels, the body favors conversion of exogenous androstenedione into estrogens.
15. Effects of DHEA and androstenedione after 12 weeks of training
17. Increasing Energy Supply Carbohydrate availability
feeding before/during competition
enhancing fat use
? fat utilization
Creatine
PCr vital for ATP production during power/speed events
18. Sport Nutrition: Carbohydrate
19. Effect of Dietary CHO on Muscle Glycogen Repletion
20. Effect of CHO feeding during prolonged exercise to exhaustion
21. Sport Nutrition: Sport Drinks [CHO] affects fluid absorption rate in gut
Gatorade – 6%
Exceed – 7.2%
Coca-Cola – ~11%
Sprite – 10.2%
cranberry juice – 15%
orange juice – 11.8%
22. Sport Nutrition: Carbohydrate Before exercise
CHO intake “top off” liver glycogen stores
During prolonged exercise
CHO intake helps maintain blood glucose and spares liver glycogen
After exercise
high CHO intake increases rate of glycogen storage
protein (~6 g) ingestion will stimulate protein synthesis
23. Sport NutritionMinerals & Vitamins B vitamins used to make mitochondrial enzymes
Vitamin D aids in skeletal Ca2+ absorption
Vitamin K aids in ETC
calcium used in contraction and skeletal system
iron is essential component of hemoglobin
24. Increasing Fat Availability High fat intake ? intramuscular fat stores, but doesn’t benefit performance
Caffeine
? fat availability and ? carbohydrate use?
spares carbohydrate stores?
Other nutritional products
25. Creatine Supplementation Cr essential to maintain ATP at exercise onset
effects of supplementation on performance
no benefit to single-bout exercise
diminishes fatigue during multiple-bout exercise
allows for increased training volume
26. Greenhaff has reported that following creatine supplementation, the rate of PCr resynthesis is faster than prior to supplementation. The greater PCr concentration at the start of the next bout should increase performance.
Greenhaff has reported that following creatine supplementation, the rate of PCr resynthesis is faster than prior to supplementation. The greater PCr concentration at the start of the next bout should increase performance.
27. Increasing O2 Delivery Blood doping
? RBC and blood volume
Altitude training
live high, train low
EPO
stimulates RBC production Lasse Viren, winner of 5k and 10K in 1972 and 1976 OlympicsLasse Viren, winner of 5k and 10K in 1972 and 1976 Olympics
28. Performance After Inhalation of 100% O2
29. Effect of blood doping on VO2max and fatigue
30. Performance after blood doping
31. Other Banned Substances Stimulants – masks fatigue
ephedrine, cocaine, amphetamines
Painkillers
narcotics
Diuretics
rapid weight loss
masks steroid use Picture of Andreea Rudacan, Romanian gymnast who won gold medal in 2000 Olympics, but afterwards was later stripped of medal after testing positive for ephedrine.Picture of Andreea Rudacan, Romanian gymnast who won gold medal in 2000 Olympics, but afterwards was later stripped of medal after testing positive for ephedrine.
32. Dehydration and Performance
33. Buffering Acid Accumulation sodium bicarbonate – buffers acid, improves high-intensity exercise (1-10 min)
? rate of lactic acid transport out of muscle
34. Effect of Bicarbonate Loading
35. Ergogenic Aids for Improving Athletic Performance Summary
Use of banned substances is widespread at all levels
Detecting banned substances doesn’t keep up with continual modification of banned drugs
Many claims of OTC substances as ergogenic aids are unfounded
Future of performance enhancement will be alternation of genetic coding
36. Design an ergogenic aid for a(n) endurance athlete
speed athlete
power athlete
37. Research supports the benefits of ____ for enhancing performance of elite endurance athletes.
a high-CHO diet during training
consuming CHO during prolonged exercise
consuming amino acids during prolonged exercise
ingesting bicarbonate
all of the above are beneficial
only a and b are beneficial
38. Which of the following statements is true?
Breathing 100% O2 during exercise will increase the amount of O2 available to working muscle.
Increasing the number of RBCs will increase the amount of O2 available to working muscle.
“Live high and train low” is more beneficial to performance than “live high and train high” as training volume is greater when training “low.”
all of the above are true
only b and c are true
none of the above are true
39. Taking bicarbonate prior to competition
will cause GI distress
will not benefit performance for a 5-km race (15-20 min)
may increase H+ transport from muscle
all of the above are correct
only a and c are correct