Presentation done on athletes to find out how effective branched-chain amino acids (BCAA) are at reducing delayed onset muscle soreness (DOMS) compared to those who do not use them?

1. Nutritional Impact
Presentation
By: Andrew Kemerer, Camryn Dyer, Quintin Mapstone, Ryan Zappa, Ty Kildow

2. PICO Question
In athletes, how effective are branched-chain amino acids (BCAA) at reducing
delayed onset muscle soreness (DOMS) compared to those who do not use
them?
P- Athletes
I- BCAA
C- Athlete usage of BCAA vs non users
O- Which group will experience reduced muscle soreness

3. Hypothesis
Athletes who take BCAA’s will see a reduction in DOMS

4. Delayed Onset Muscle Soreness (DOMS)
- What is DOMS?
- Symptoms?
- What causes DOMS?
- Eccentric Exercises (Tension on muscle, while lengthening)

5. Branched-Chain Amino Acids (BCAAs)
-isoleucine, leucine and valine
-21% of total body protein count
-35% of dietary essential amino acids
-involved in the formation of the secondary structural motifs of proteins
-present in most of the non-aqueous interior environment of water-soluble globular
proteins

6. Branched-Chain Amino Acids (BCAAs)
- Broken down in the muscle
- Helps inhibit protein breakdown
- Enhances protein synthesis

7. Research
- 2017 Study of 15 men of 21.5 years of age were given BCAA 3 days prior to
exercise.
- Performed 30 eccentric exercises
- Control Group that took the placebo had a longer recovery from DOMS vs the
group that took the BCAAs.

8. Additional Research
- 2017 study of 14 male and 2 female resistance training athletes who have an
average age of 22 years old.
- BCAA supplement vs Placebo
- Focused on lower limbs
- 4 visits, 3 tests
- BCAA supplement was sufficient in reducing DOMS in the resistance trained
athletes. Enhanced Recovery

9. Additional Research
- United Kingdom Researchers had athletes perform 100 drop jumps
- Athletes Consumed 20 grams total of BCAAs daily
- Results? (BCAAs VS. Placebo)

10. Future Research
- How does this affect people who have the appropriate amount of protein in
their diet?
- The side effects BCAAs on the pancreas
- Finding a suitable dosage

11. Conclusion
In conclusion we were able to prove that the hypothesis of athletes who take
BCAA’s will see a reduction in DOMS compared to athletes that did not take
BCAA’s at all before and after a workout.

12. References
● Bifari, F., & Nisoli, E. (2017). Branched-chain amino acids differently modulate catabolic
and anabolic states in mammals: a pharmacological point of view. British Journal of Pharmacology, 174(11), 1366–1377.
https://doi.org/10.1111/bph.13624
● Olson, Gail. “Delayed Onset Muscle Soreness (DOMS): Symptoms, Causes, Treatment.” Healthline, Healthline Media, 25 June
2019, www.healthline.com/health/doms.
● Song-Gyu Ra, Teruo Miyazaki, Keisuke Ishikura, Hisashi Nagayama, Shoichi Komine,
Yoshio Nakata, Seiji Maeda, Yasushi Matsuzaki, & Hajime Ohmori. (2013). Combined effect of branched-chain amino acids
and taurine supplementation on delayed onset muscle soreness and muscle damage in high-intensity eccentric exercise.
Journal of the International Society of Sports Nutrition, 10(1), 1–22.
● Institute for Quality and Efficiency in Health Care (IQWiG); 2006-. How does the liver
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● Ra, Song-Gyu et al. “Effect of BCAA supplement timing on exercise-induced muscle soreness and damage: a pilot placebo-
controlled double-blind study.” The Journal of sports medicine and physical fitness vol. 58,11 (2018): 1582-1591.
doi:10.23736/S0022-4707.17.07638-1Ra,
● Waldron , Mark, et al. “The Effects of Acute Branched-Chain Amino Acid Supplementation on Recovery from a Single Bout of
Hypertrophy Exercise in Resistance-Trained Athletes.” Applied Physiology, Nutrition, and Metabolism, 2017,
insight.cumbria.ac.uk/id/eprint/5049/1/Theeffectsofacutebranched-
chainaminoacidsupplementationonrecoveryfromasingleboutofhypertrophyexerciseinresistance-trainedathletes.pdf.
● Volek, Jeff S. “BCAAs Reduce Muscle Soreness (DOMS).” Nutrition Express,
www.nutritionexpress.com/showarticle.aspx?articleid=1721.