PMID- 29910421
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200930
IS  - 2075-4663 (Electronic)
IS  - 2075-4663 (Linking)
VI  - 5
IP  - 3
DP  - 2017 Aug 14
TI  - Efficacy of Carbohydrate Ingestion on CrossFit Exercise Performance.
LID - 10.3390/sports5030061 [doi]
LID - 61
AB  - The efficacy of carbohydrate (CHO) ingestion during high-intensity strength and 
      conditioning type exercise has yield mixed results. However, little is known 
      about shorter duration high-intensity exercise such as CrossFit. The purpose of 
      this study was to investigate the performance impact of CHO ingestion during 
      high-intensity exercise sessions lasting approximately 30 min. Eight healthy 
      males participated in a total of four trials; two familiarizations, a CHO trial, 
      and a similarly flavored, non-caloric placebo (PLA) trial. CrossFit's "Fight Gone 
      Bad Five" (FGBF) workout of the day was the exercise model which incorporated 
      five rounds of maximal repetition exercises, wall throw, box jump, sumo deadlift 
      high pull, push press, and rowing, followed by one minute of rest. Total 
      repetitions and calories expended were summated from each round to quantify total 
      work (FGBF score). No difference was found for the total work between CHO (321 +/- 
      51) or PLA (314 +/- 52) trials (p = 0.38). There were also no main effects (p > 
      0.05) for treatment comparing exercise performance across rounds. Based on the 
      findings of this study, it does not appear that ingestion of CHO during short 
      duration, high-intensity CrossFit exercise will provide a beneficial performance 
      effect.
FAU - Rountree, Jaden A
AU  - Rountree JA
AD  - Department of Kinesiology, University of Alabama, Tuscaloosa, AL 34587, USA. 
      jarountree@crimson.ua.edu.
FAU - Krings, Ben M
AU  - Krings BM
AD  - Department of Kinesiology, Mississippi State University, Starkville, MS 39762, 
      USA. bmk216@msstate.edu.
FAU - Peterson, Timothy J
AU  - Peterson TJ
AD  - Department of Kinesiology, Mississippi State University, Starkville, MS 39762, 
      USA. tjp91@msstate.edu.
FAU - Thigpen, Adam G
AU  - Thigpen AG
AD  - Department of Kinesiology, Mississippi State University, Starkville, MS 39762, 
      USA. agt42@msstate.edu.
FAU - McAllister, Matthew J
AU  - McAllister MJ
AD  - Department of Kinesiology, Mississippi State University, Starkville, MS 39762, 
      USA. mjm639@msstate.edu.
FAU - Holmes, Megan E
AU  - Holmes ME
AD  - Department of Kinesiology, Mississippi State University, Starkville, MS 39762, 
      USA. mholmes@colled.msstate.edu.
FAU - Smith, JohnEric W
AU  - Smith JW
AUID- ORCID: 0000-0003-4649-7342
AD  - Department of Kinesiology, Mississippi State University, Starkville, MS 39762, 
      USA. jws597@msstate.edu.
LA  - eng
PT  - Journal Article
DEP - 20170814
PL  - Switzerland
TA  - Sports (Basel)
JT  - Sports (Basel, Switzerland)
JID - 101722684
PMC - PMC5968949
OTO - NOTNLM
OT  - ergogenic aids
OT  - high-intensity exercise
OT  - resistance training
OT  - strength
COIS- The authors report no conflict of interests.
EDAT- 2018/06/19 06:00
MHDA- 2018/06/19 06:01
PMCR- 2017/08/14
CRDT- 2018/06/19 06:00
PHST- 2017/06/29 00:00 [received]
PHST- 2017/08/01 00:00 [revised]
PHST- 2017/08/10 00:00 [accepted]
PHST- 2018/06/19 06:00 [entrez]
PHST- 2018/06/19 06:00 [pubmed]
PHST- 2018/06/19 06:01 [medline]
PHST- 2017/08/14 00:00 [pmc-release]
AID - sports5030061 [pii]
AID - sports-05-00061 [pii]
AID - 10.3390/sports5030061 [doi]
PST - epublish
SO  - Sports (Basel). 2017 Aug 14;5(3):61. doi: 10.3390/sports5030061.