2010 Thesis presentation

1. The Effect of CHO and PRO
Supplementation and the Timing of
Ingestion on Muscle Recovery and
Performance in Endurance Athletes
Written By: Lauren Luketic
EXPH 496

2. Outline
•
Introduction
– Background
– Thesis Question
Significance of the Problem
• Review of the Literature
•
– Pre-Competition
– During Competition
– Post-Competition

3. Outline: Cont.’d
Critical
Analysis of the Literature
Conclusion
Future Research
Questions

4. Introduction
Background
– Nutrition + Training = Performance
– Energy balance
– Nutritional supplementation
• Carbohydrate (CHO)
• Protein (PRO)
– Maintaining blood glucose
• CHO loading
– Exercise-induced muscle damage (EIMD)

5. Introduction: cont.’d
Thesis
Question:
– How does the timing of
carbohydrate and/or protein
supplementation affect
performance and muscle recovery
in endurance athletes?

6. Significance of the Problem
Benefits
athletes on all levels of
competition
Ultimate
goal:
◦ Optimize performance
◦ Increase rate of muscle recovery
Prevention
of serious consequences

7. Significance of the Problem: cont.’d
Consequences
◦ Negative energy balance
 Metabolic dysfunctions
 Loss of lean muscle mass
 ↓ Strength and endurance
◦ Female athletes
 Amenorrhea
 Osteoporosis
◦ Potential for success & overall health
would be negatively affected

8. Review of the Literature
Supplementation
type ↔ timing of
ingestion
Hypothesis:
◦ If ingestion of supplements before and
during exercise increases performance
and delays fatigue, then EIMD would be
less making supplementation after
exercise more efficient.
◦ ↓ EIMD = ↑ recovery rate

9. Review of the Literature: cont.’d
Pre-competition
◦ CHO loading = ↑ performance
During
competition
◦ Sports drinks (CHO + electrolytes)
◦ Delay on-set of fatigue
◦ Keep optimal pace
Post-competition
◦ PRO = ↑ rate of muscle recovery

10. Critical Analysis of the Literature
Conflicting
results between studies
◦ CHO+PRO (before, during, & after)
◦ High vs. Low GI meals
Lack
of female subjects

11. Conclusion
Best
supplement
◦ Pre-competition
◦ During competition
◦ Post-competition
Overall
best supplement
◦ Inconclusive!!!

12. Future Research
Include
Other
more women
ergogenic aids
◦ Caffeine
◦ Creatine
◦ Chocolate milk
Dose
and frequency ratio

13. Questions?

14. References
1.
2.
3.
4.
5.
6.
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2006.
Berardi JM, Noreen EE, and Lemon PWR. Recovery from a cycling time trial
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15. References: Cont.’d
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16. References: Cont.’d
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17. References: Cont.’d
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18. References: Cont.’d
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