the effects of creatine on repeated sprint performance, maximum strength and power (presentation)

The Effects Of Creatine On Repeated Sprint

Performance, Maximum Strength And PowerBy Carl Page, Charlotte Cochrane, Gemma Beames, Lindsay

Cook & Natalija Cizikova (Group 15)

Research Question

The effects of

creatine on repeated

sprint performance,

maximum strength

and power.

Criteria To Prove Or

Disprove Hypothesis

Examine the physiological/biochemical

mechanisms of how creatinemay enhance anaerobic

performance.

Research the various creatine loading strategies.

Compare the different types of creatine supplementation

being provided.

See if there are any potential side-effects/risks associated

with creatinesupplementation.

Critically analysis of the scientific literature in relation

to creatine and anaerobic performance.

Check to see this supports/contradicts

previous findings.

Mechanism(s) For Use Of

Creatine In Anaerobic

Exercise

Physiological/Biochemical Mechanisms Of

How Creatine May Enhance Anaerobic

Performance

• Creatine easily mixes with

phosphate to form

phosphocreatine or

creatine phosphate, this is

located in the skeletal

muscle, (Miller-Keane and

O'Toole, 2003).

The Scientific Literature In Relation To

Creatine And Anaerobic Performance

• Wilmore and Costill (2012)

• Holland & Barrett Retail Limited, (2012)

Creatine Loading Protocols

Different Creatine Loading Strategies

• Jonas, (2005) recognises

that creatine is important

for exercise performance,

as it can be used to aid

sport performance as a

supplement to an athlete’s

diet.

Different Types Of Creatine

Supplementation

• Creatine Monohydrate

• Creatine Citrate

• Creatine Phosphate

• Creatine Ethyl Ester

(Cooper et al. 2012).

Side Effects

Potential Side-effects/Risks Associated

With Creatine Supplementation

• Increase strength

• Fat free mass

• Greater training adaptations

• Muscle morphology

• Reduces fatigue

• Stomach aches

• Diarrhoea

The Literature In Relation To The

Risks/Side Effects Of Creatine Use

• Wilmore and Costill (2012)

• Cooper et al. (2012, pg.5)

Analyses Of Results

Analyses Of Results

2.680 ± 0.180

2.716 ± 0.198

2.664 ± 0.169

2.694 ± 0.150

2.63002.64002.65002.66002.67002.68002.69002.70002.71002.72002.7300

Pre-Sprint(CreatineGroup)

Pre-Sprint(PlaceboGroup)

Post-Sprint(CreatineGroup)

Post-Sprint(PlaceboGroup)

Tim

e (

s)

Group

Figure 1. Average decrease in time (s ± SD) in Pre-Sprint and Post-Sprint 15 trials in Creatine and Placebo groups.

Analyses Of Results

Figure 2. Concentric and Eccentric Peak Torque (N*m) in Height Jump in Pre- and Post- trials in Creatine and Placebo groups.

1003.0001113.625

1181.875 1200.125

944.375 971.250

1206.5001138.375

0.000

200.000

400.000

600.000

800.000

1000.000

1200.000

1400.000

Pre-Concentric PeakTorque

Post-Concentric PeakTorque

Pre-Eccentric PeakTorque

Post-Eccentric PeakTorque

Peak T

orq

ue (

N*m

)

Creatine group

Placebo group

Analyses Of Results

Figure 3. Average Jump Height (cm) in Height Jumps in Pre- and Post- trials in Creatine and Placebo groups.

48.083 ± 5.093

47.038 ± 6.412

45.039 ± 9.48245.260 ± 6.093

43.500

44.000

44.500

45.000

45.500

46.000

46.500

47.000

47.500

48.000

48.500

Creatine group Placebo group

Ju

mp

heig

ht

(cm

)

Pre- Jump Height,Mean

Post- Jump Height,Mean

Our Findings Support/Contradict Previous

Findings

• Lee, et al. (2011)

• Bemben et al. (2010)

• Gutierrez-Sancho, et al (2006)

Future Recommendations For Studies

• Males and Females

separated

• Bigger sample groups

• Different supplements

• Existing diet

• Training regimes

• Strict controls

Conclusion

• It is important to regularly test nutritional supplements for

potential ergogenic value.

• Discover different types of creatine supplements and how

they respond when taken.

• The hormonal and energy production work together with

the physiological systems within the human body.

• Studies revealed there is an improved rate of ATP

synthesis and PCr resynthesis during high-intensity

exercises like sprinting and weight lifting when

consuming creatine.

References

• Cooper, R., Naclerio, F., Allgrove, J. and Jimenez, A. (2012) Creatine supplementation

with specific view to exercise/sports performance: an update. Journal of the

International Society of Sports Nutrition. 9 (33), pp.1–11. [Online]. Available at:

http://www.jissn.com/content/9/1/33 (Accessed on: 06/01/2013).

• Jonas, WB. (2005) Mosby's dictionary of complementary and alternative medicine.

London: Elsevier Mosby.

• Wilmore J. H. and Costill D. L. (2012) Physiology of sport and exercise. 5th edn.

Champaign, Illinois: Human Kinetics.

• Holland & Barrett Retail Limited (2012) Creatine Powder. Available at:

http://www.hollandandbarrett.com/pages/product_detail.asp?pid=557&prodid=429

(Accessed on: 20/01/2013)

• Holland & Barrett Retail Limited (2012) Creatine. Available at:

http://www.hollandandbarrett.com/pages/categories.asp?cid=93 (Accessed on:

20/01/2013)

• Lee, C.L., Lin, J.C. & Cheng, C.F. (2011) ‘Effect of caffeine ingestion after creatine

supplementation’, Journal of Sport Science and Medicine, 9 pp. 262-269.

DISCOVERY [Online]. Available at: https://breo.beds.ac.uk/webapps/portal/

(Assessed: 26 February 2013).

• Bemben, MG., Witten, MS., Carter, JM., Eliot, KA., Knehans, AW.,

Bemben, DA. (2010) The effects of supplementation with Creatine

and protein on muscle strength following a traditional resistance

training program in middle aged and older men. The Journal of

Nutrition Health and Aging, 14 (2), pp.155-159.

• Gutierrez-Sancho, O., Moncada-Jimenez, J., Salazar-Rojas, W. &

Robinson, E. (2006) The Effects of Creatine Supplementation on

Biochemical, Body Conposition, and Performance Outcomes in

Humans: A Ivfeta-analysis. International Journal of Applied Sports

Sciences. 18 (2) pp. 12-38.

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