PMID- 23537142
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20130404
LR  - 20211021
IS  - 1550-2783 (Print)
IS  - 1550-2783 (Electronic)
IS  - 1550-2783 (Linking)
VI  - 10
IP  - 1
DP  - 2013 Mar 28
TI  - The influence of commercially-available carbohydrate and carbohydrate-protein 
      supplements on endurance running performance in recreational athletes during a 
      field trial.
PG  - 17
LID - 10.1186/1550-2783-10-17 [doi]
AB  - BACKGROUND: It is recommended that endurance athletes consume carbohydrate (CHO) 
      supplements, providing 6-8% CHO concentration, during exercise > 60 minutes to 
      improve athletic performance. Recently research has compared carbohydrate-protein 
      (CHO-P) supplementation to the traditionally used CHO supplementation during 
      endurance exercise, following these supplementation recommendations, in 
      controlled settings, but not under simulated applied conditions such as a field 
      trial. Therefore, the purpose of the present investigation was to test CHO and 
      CHO-P supplementation under applied conditions such that commercially-available 
      isocaloric (CHO-P & double-carbohydrate [CHO-CHO]) and isocarbohydrate (CHO-P & 
      CHO) supplements were compared to a placebo (PLA), within an outdoor running 
      field trial > 60 minutes in order to asses their influence on endurance 
      performance. METHODS: Twelve male recreational runners completed four, 19.2 km 
      runs, where they were instructed to run at a pace similar to race pace including 
      a final sprint to the finish, which in this case was the final two laps of the 
      course (1.92 km). Supplementation was provided before the start and in 4 km 
      increments. Performance was measured by time to complete the 19.2 km run and last 
      1.92 km sprint. RESULTS: Analyses found no difference between supplements in time 
      to complete the 19.2 km run (PLA = 88.6 +/- 11.6 min, CHO = 89.1 +/- 11.3 min, 
      CHO-P = 89.1 +/- 11.8 min, CHO-CHO = 89.6 +/- 11.9 min) or last 1.92 km sprint to the 
      finish (PLA = 8.3 +/- 1.2 min, CHO = 8.2 +/- 1.2 min, CHO-P = 8.2 +/- 1.2 min, 
      CHO-CHO = 8.4 +/- 1.5 min). CONCLUSIONS: When following recommendation for 
      supplementation within a field trial, commercially available CHO and CHO-P 
      supplements do not appear to enhance performance in male recreational runners.
FAU - Coletta, Adriana
AU  - Coletta A
AD  - Department of Nutrition, The University of Tennessee- Knoxville, 1215 W 
      Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN, 37996-1920, USA. 
      hraynor@utk.edu.
FAU - Thompson, Dixie L
AU  - Thompson DL
FAU - Raynor, Hollie A
AU  - Raynor HA
LA  - eng
PT  - Journal Article
DEP - 20130328
PL  - United States
TA  - J Int Soc Sports Nutr
JT  - Journal of the International Society of Sports Nutrition
JID - 101234168
PMC - PMC3614480
EDAT- 2013/03/30 06:00
MHDA- 2013/03/30 06:01
PMCR- 2013/03/28
CRDT- 2013/03/30 06:00
PHST- 2012/10/04 00:00 [received]
PHST- 2013/03/13 00:00 [accepted]
PHST- 2013/03/30 06:00 [entrez]
PHST- 2013/03/30 06:00 [pubmed]
PHST- 2013/03/30 06:01 [medline]
PHST- 2013/03/28 00:00 [pmc-release]
AID - 1550-2783-10-17 [pii]
AID - 10.1186/1550-2783-10-17 [doi]
PST - epublish
SO  - J Int Soc Sports Nutr. 2013 Mar 28;10(1):17. doi: 10.1186/1550-2783-10-17.