Effects of a pre-and post-workout protein-carbohydrate supplement in trained crossfit individuals Public Deposited

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Creator
  • Outlaw, Jordan J
    • Other Affiliation: Human Performance Lab, Exercise and Sport Science Department, University of Mary Hardin-Baylor, 900 College Street, Belton, TX 76513, USA
  • Wilborn, Colin D
    • Other Affiliation: Human Performance Lab, Exercise and Sport Science Department, University of Mary Hardin-Baylor, 900 College Street, Belton, TX 76513, USA
  • Smith-Ryan, Abbie
    • Affiliation: College of Arts and Sciences, Department of Exercise and Sport Science
  • Hayward, Sara E
    • Other Affiliation: Human Performance Lab, Exercise and Sport Science Department, University of Mary Hardin-Baylor, 900 College Street, Belton, TX 76513, USA
  • Urbina, Stacie L
    • Other Affiliation: Human Performance Lab, Exercise and Sport Science Department, University of Mary Hardin-Baylor, 900 College Street, Belton, TX 76513, USA
  • Taylor, Lem W
    • Other Affiliation: Human Performance Lab, Exercise and Sport Science Department, University of Mary Hardin-Baylor, 900 College Street, Belton, TX 76513, USA
  • Foster, Cliffa A
    • Other Affiliation: Human Performance Lab, Exercise and Sport Science Department, University of Mary Hardin-Baylor, 900 College Street, Belton, TX 76513, USA
Abstract
  • Abstract Purpose The purpose was to assess effects of a pre- and a post-workout protein-carbohydrate supplement on CrossFit-specific performance and body composition. Methods In an open label randomized study, 13 male and 16 female trained Crossfit participants (mean ± SD; age: 31.87 ± 7.61 yrs, weight: 78.68 ± 16.45 kg, percent body fat: 21.97 ± 9.02) were assessed at 0 and 6 weeks for body composition, VO2max, Wingate peak (WPP) and mean power (WMP), in addition to sport-specific workouts (WOD1: 500 m row, 40 wall balls, 30 push-ups, 20 box jumps, 10 thrusters for time; WOD2: 15 minutes to complete an 800 m run "buy in", followed by as many rounds as possible (AMRAP) of 5 burpees, 10 Kettlebell swings, 15 air squats). The supplement (SUP) group consisted of 19 g of a pre-workout drink (extracts of pomegranate, tart cherry, green and black tea) taken 30 minutes before and a post-workout protein (females: 20 g; males: 40 g) and carbohydrate (females: 40 g; males: 80 g) supplement consumed immediately after each workout. The control (CTL) group consumed only water one hour before or after workouts. Participants completed three (minimum) varied workouts per week at a CrossFit gym as typical to habitual training throughout the six week study. Data were analyzed by repeated measures ANOVA (p <0 .05), 95% Confidence Intervals, and Magnitude Inferences. Results There were no time × group interactions for body composition, WMP, or WOD1 based on ANOVA statistics. VO2MAX, WPP, and WOD2 results revealed that the pre/post supplements were likely beneficial after 95% Confidence Intervals and Magnitude Inferences analysis. Conclusion The combination of proprietary supplements taken for 6 weeks may provide benefits during certain sport-specific performance in trained CrossFit athletes but not others.
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  • Article
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  • In Copyright
Rights holder
  • Jordan J Outlaw et al.; licensee BioMed Central Ltd.
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Journal title
  • SpringerPlus
Journal volume
  • 3
Journal issue
  • 1
Page start
  • 369
Language
  • English
Is the article or chapter peer-reviewed?
  • Yes
ISSN
  • 2193-1801
Bibliographic citation
  • SpringerPlus. 2014 Jul 21;3(1):369
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  • Open Access
Publisher
  • Springer
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