• CROSSFIT-BASED HIGH-INTENSITY POWER TRAINING IMPROVES MAXIMAL AEROBIC FITNESS AND BODY COMPOSITION.

https://librarylink.uncc.edu/login?url=http://search.ebscohost.com/login.aspx?direct=true&db=a9h&AN=92015301&site=ehost-live&scope=site Abstract: The article presents information on the improvement of maximal aerobic fitness and body composition through crossfit training. Topics discussed include high-intensity interval training (HIIT), and high-intensity power training (HIPT). Also discussed are the differences between these two types of training programs.

• The influence of a crossfit exercise intervention on glucose control in overweight and obese adults

http://uncc.worldcat.org/oclc/822041672 Abstract: Background: The American College of Sports Medicine physical activity guidelines call for 150 minutes of moderate or 75 minutes of vigorous aerobic exercise plus two days of resistance training (A-RT) per week for health benefits. Yet, most adults do not achieve the recommended amount of physical activity per week frequently citing lack of time as a barrier. High-intensity exercise protocols have improved glucose control, insulin sensitivity, fitness, and body composition, in less total time than lower intensity protocols, but have been studied as singular modes of exercise. CrossFit (CF) temporally combines A-RT together utilizing constantly varied multi-joint, full range-of-motion movements in substantially less training time than lower-intensity protocols. The aim of this study was to compare the effects of CF versus A-RT on glucose control in overweight/obese, physically inactive individuals. Methods: Eighteen overweight/obese (BMI 30.3 ± 2.8) adults (28.5 ± 5.9 years) were randomized to one of two groups: CF (3 days/week for 60 minute sessions) or A-RT (3 days/week of aerobic exercise for 50 minutes, plus ~20 minutes resistance exercise on 2 of those days) over 8-weeks. Fasting plasma glucose and 1-hour oral glucose tolerance tests were taken at baseline and post-training along with Eurofit fitness measures, VO₂ peak, and body composition via dual energy X-ray absorptiometry. Results: Glucose control and body composition did not change significantly within or between groups. Both groups significantly improved muscular endurance (pushups completed on knees, CF+39.5%, p < 0.05; A-RT+24.4%, p = 0.01). The CF group improved on number of situps (CF+6.8%, p = 0.01) and VO₂ peak (CF+9.1%, p < 0.05). Time spent exercising was significantly different between groups with the CF group averaging 38.7 ± 15.6 minutes per week and 13.1 ± 0.9 minutes per workout, and the A-RT group averaging 190.0 ± 10.7 minutes per week and 63.3 ± 3.6 minutes per workout. Conclusion: Eight weeks of A-RT or CF did not produce significant changes in glucose control or body composition in overweight/obese adults. However, despite exercising significantly less time per week CF training demonstrated greater improvements in fitness measures than A-RT.

• A Comparison of CrossFit Training to Traditional Anaerobic Resistance Training in Terms of Selected Fitness Domains Representative of Overall Athletic Performance

URI: http://hdl.handle.net/2069/2024 Abstract: The purpose of this study was to observe and gather information regarding overall athletic performance in two different groups of exercisers. The two groups were CrossFit exercisers (CF) and traditional anaerobic resistance exercisers (TAR). The study is cross-sectional in nature, with various observations being required for data collection. Data was collected via a simple field test including measurement of performance in seven domains of fitness representative of overall athletic performance. The domains of fitness include body composition, flexibility, aerobic capacity, maximum strength, agility, maximum power, and muscular endurance. The sample size includes 19 participants in each group. All subjects are males, for the sake of maintaining a completely homogenous sample. All participants self-reported their volume and type of exercise. They were required to fall within the range of 5-6 days/week of 45-60min. This comes out to 240-300 minutes per week of exercise sessions of moderate-vigorous activity (both in CF and TAR). Data was analyzed using multiple regression, and among each group through the use of independent T-tests and Chi-Square Analysis.