The effects of creatine supplementation on hockey sprint and skill performance

Wheeler, Lucy (2017) The effects of creatine supplementation on hockey sprint and skill performance. Undergraduate thesis, University of Chichester.

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Abstract

Purpose: Previous research has demonstrated that acute creatine (Cr) supplementation has ‘ergogenic’ benefits during single and repeated bouts of high-intensity exercise. The majority of research focuses on the effects of Cr regimens on elite performance in males. Limited information is available to female hockey players and coaches regarding the effect of Cr supplementation on sprint and hockey specific skill performance. Method: Participants were split into two groups and matched by overall sprint time following the ABBA approach; placebo (PLA) (age: 20.8 ± 0.4 years, height: 165.8 ± 5.4 cm, mass: 67.2 ± 8.1 kg) and Cr (age: 20.7 ± 1 years, height: 163.7 ± 6.2 cm, mass: 58.6 ± 7.1 kg). Pre and post-testing was completed seven days apart and consisted of: 1) Vertical jump test involving three maximal jumps with the highest jump recorded 2) Repeated sprint ability test (RSA) consisting of 6 x 40-m sprints. Heart rate (HR) and rate of perceived exertion (RPE) were collected after each sprint 3) Push pass test consisting of three push passes with the fastest speed recorded. 4) Second vertical jump test following the same protocol as the first. Two days after the pre-test participants completed a supplementation regimen for five days 1) Cr (5g Cr and 5g of CHO per dose, four times a day) 2) (10g CHO per dose, four times a day). Results: A two-way repeated measures ANOVA showed no significant difference between the Cr and PLA group for total sprint time (F(1,10) = 0.055, p=0.819), HR (F(1,10) = 0.239, p=0.636) change in jump height (F(1,10) = 3.463, p=0.092) or speed of push pass (F(1,10) = 0.299, p=0.597). There was a significant interaction effect for RPE (F(1,10) = 7.913, p=0.018). However planned post-hoc analysis with Bonferroni correction applied showed no significant difference for Cr (t(5) = 1.942, p>0.025) or PLA (t(5) = -2.036, p>0.025). Conclusion: The findings of this study suggest that a Cr supplementation regimen consisting of 4 x 5g of Cr for five days does not significantly affect repeated sprint performance, jump height or skill performance in hockey players. However, research has shown there are responders and non-responders to Cr and this could impact the potential ergogenic effects of Cr.

Item Type: Thesis (Undergraduate)
Additional Information: BSc (Hons) Sport and Exercise Science
Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure > GV557 Sports
Q Science > Q Science (General)
Divisions: Departments > Sport and Exercise Sciences
Undergraduate Dissertations
Depositing User: Ann Jones
Date Deposited: 22 Nov 2017 17:56
Last Modified: 22 Nov 2017 17:56
URI: http://eprints.chi.ac.uk/id/eprint/3135

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