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Does one repetition maximun in clean correlate with 20 meter sprint and countermovement jump?
Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI), Health and Sport.
2016 (English)Independent thesis Basic level (degree of Bachelor), 180 HE creditsStudent thesis
Abstract [en]

Background: Crossfit is a high-volume training form and is popular among society and military communities because of its metabolic and physical challenging conditioning program. Crossfit includes both aerobic and anaerobic training and performers of Crossfit use all three different metabolic pathways, the phosphagen system, glycolysis and oxidative system. Similarities in movement pattern clean, countermovement jump (CMJ) and sprint running exist and also the use of stretch shortening cycle (SSC), which is a biomechanical function that is used in for example plyometric exercises. Recent research has reported correlation between weightlifting, countermovement jump (CMJ) and sprint, however, few of these studies have used female Crossfit performers. Aim: The aim of this study was to examine if there is a correlation between the performances of a clean and linear sprint time in 20 meter and if there is a correlation between the performance of clean and height in CMJ. Method: To participate, the women had to be a member of a Crossfit gym since five months back, and have five month of experience of practicing the clean exercise. The study had two different test sessions were the first session was for one repetition max in clean and session two was for 20 meter sprint and CMJ. Result: Fifteen females participated in the study and the correlation between clean and CMJ showed a strong correlation (r =0,74, r2=0,55) and when controlling clean and CMJ for body mass, the result showed a very strong correlation (r=0.88). The associations between clean and sprint showed a moderate to strong negative correlation (r =-0,52, r 2=0,27) and when controlling for body mass the result was (r =-0.54). The association between CMJ and sprint showed a strong correlation (r=-0.69, r2=0,48) and when controlling for body mass the correlation was (r =-0.71). Conclusion:Findings from this current study showed that there is a strong relationship between CMJ and clean among female Crossfit participants. This indicate that weightlifting exercise, in this case clean, can improve power exercises as jump height, but not to forget the importance of practicing jump movements as well. For further research it would be interesting if the participants were divided in groups depending on how long they had practiced in Crossfit. To see if there would be any different in clean, sprint and jump among these measurements, and maybe use both squat jump and CMJ as a test for jump to see the different in the result it might give.

Place, publisher, year, edition, pages
2016.
Keyword [en]
Crossfit, clean, jump, sprint
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:hh:diva-31150OAI: oai:DiVA.org:hh-31150DiVA: diva2:936509
Subject / course
Biomedicine Targeting Physical Education
Supervisors
Examiners
Available from: 2016-07-15 Created: 2016-06-14 Last updated: 2016-07-15Bibliographically approved

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