The Impact of CrossFit on Some of Physiological Variables Amongst Participants at Hebron Fitness Centers

(Mohannad Khaleel Alqawasmi and Bashar Abd Alhawad Saleh)

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Abstract

The purpose of this study was to identify the impact of CrossFit training on some physiological variables (anaerobic power, anaerobic capacity and maximal oxygen consumption) among participants at Hebron’s fitness centers. A total of 38 male subjects were randomly divided into two groups, experimental group (n=19) and control group (n=19). The researcher used the experimental method in the design of experimental and control groups, with the training program applied to the experimental group only. The statistical analysis showed a significant difference (0.05≤ α) between the pre and post measurement for the experimental group in favor of the post measurement. Anaerobic power has reached 35.5%, and the anaerobic capacity has reached 23.6% while the VO2 Max has reached an average variation of 19.9%. While the results showed no statistically significant differences between the two measurements pre and post to the experimental group on variables (body mass index, basal metabolic rate, fat mass), BMI has reached 1.7%, and basic metabolic has reached 3.6%. Fat mass of grease has reached 1.6%. The results showed significant differences (0.05≤ α) when performing the post measurement between the experimental and the control group, which was in favor of the experimental group on anaerobic power, anaerobic capacity and the VO2 Max. The researcher has recommended applying CrossFit training at all fitness centers. KEYWORDS anaerobic capacity, anaerobic power, body mass index, VO2 max
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References

Adams, M.G. (1990). Exercise Physiology: Laboratory Manual. USA: WMC Brown Bookstore.
Daren, J.S. and Benno, M.N. (2003). Energy and Performance Aspects in Sport Surfaces. Canada: Calgary Bookstore.
Dawson, C. M (2015). CrossFitt: Fitness cult or reinvented institution. Journal of International Sociology of Sport Association. 52(3), 263–78.
Gerhart, D.H. and Paternoster, B. M. (2014). A comparison of crossfit training to traditional anaerobic resistance training in terms of selected fitness domains representative of overall athletic performance. International Journal of Exercise Science. 9(2),16–26.
Gormley, S.E., Swain, D.S., Rober, J.S., Elizabeth, A.D and Ushasri, S.K. (2008). Effect of intensity of aerobic training on VO2Max. Pub Med Journal. 40(7),1336–43. DOI: 10.1249/MSS.0b013e31816c4839.
Gotlin, R.S. (2007). Sports Injuries Guidebook. USA: Human Kinetics Bookstore.
Leyland, T.B. (2008). Human power Output and crossfit metcon workouts. Pub Med Journal. 38(6), 536–43.
Lounana, J.A., Campion, F.R., Noakes, T.D.,  and Medelli, J. S. (2007). Relationship between %HRmax, %HR reserve, %VO2max, and %VO2 reserve in elite cyclists. Med Sci Sports Exercise Journal. 39(2), 350–7.
MacNeill, L.N. (2012)‏. The Beginning Runner's Handbook. 4th  edition. UK: Doug clement Bookstore.
Mesa, L.J., Ruiz, R.J., Ortega, F.B., Wärnberg, J.A, González, D.L., Moreno, A.L., Gutieerez, A.L and Castillo, J.M. (2006). Aerobic physical fitness in relation to blood lipids and fasting glycaemia in adolescents: Influence of weight status. National Library of Medicine. 16(4), 285–93.                    
Partridge, A. J., Knapp, A. B.,and Massengale, D.B.  (2014). An investigation of motivational variables in CrossFit  facilities. The Journal of Strength and   Conditioning Research. 28(6), 1714–21 DOI: 10.1519/JSC.0000000000000288.
Patel, P.D. (2012). The Influence of a Crossfit Exercise Intervention on Glucose Control in Overweight and Obese Adults. PhD Thesis, the American College of Sports Medicine Physical Activity,  USA.
Penry, J.T., Wilcox, A.R., and Yun, j.K. (2011). Validity and reliability analysis of Cooper's 12-minute run and the multistage shuttle run in healthy adults. The Journal of Strength and Conditioning Research. 25(3), 597–605. DOI: 10.1519/JSC.0b013e3181cc2423
Scotty, J.B., Tyler, B.J., Chad, R.B., Karla, J.H. and  Alissa, D.P. (2015). Relative intensity of two types of crossfit exercise: acute circuit and high-intensity interval exercise. Journal of Fitness Research. 4(2), 3–15.
Sharkey, B‏.J., and Gaskill, S.E. (2013). Fitness and Health. 7th  edition. Hong Kong: Human Kinetics Bookstore.
Smith, M.M., Sommer, J.A., Starkoff, E.B. and Devor, T.S. (2013). Crossfit-based high-intensity power training improves maximal aerobic fitness and body composition. The Journal of Strength and Conditioning Research. 27(11), 3159–72. DOI: 10.1519/JSC.0b013e318289e59f.
Urbina, S. E., Sara, A. H. and Holt, J.H. (2013). Performance and body composition effects of a pre-workout supplement and post-workout protein intake in trained crossfit individuals. Journal of International Society of Sports Nutrition. 10(1), 28-35. DOI: 10.1186/1550-2783-10-S1-P28
Wilmore, J. H., Costill, D.L. and Kenney, L.W. (2008). Physiology of sport and Exercise. 4th edition. US: Human kinetics Bookstore.