PMID- 23442284
OWN - NLM
STAT- MEDLINE
DCOM- 20141110
LR  - 20161018
IS  - 1533-4287 (Electronic)
IS  - 1064-8011 (Linking)
VI  - 27
IP  - 11
DP  - 2013 Nov
TI  - Effects of supplemental carbohydrate ingestion during superimposed 
      electromyostimulation exercise in elite weightlifters.
PG  - 3084-90
LID - 10.1519/JSC.0b013e31828c26ec [doi]
AB  - The purpose of this investigation was to test the effects of carbohydrate 
      supplementation on blood parameters and force output during superimposed 
      electromyostimulation (SEMS) single-leg isometric contractions. We hypothesized 
      that carbohydrate ingestion before and during muscle contractions would lead to 
      greater glucose availability and greater total force output for the session. Six 
      elite resistance trained male subjects participated in a randomized, 
      counterbalanced, double-blind study. The subjects were randomly assigned to 
      placebo (PL) or carbohydrate (CHO). The subjects in CHO consumed 1 g of 
      carbohydrate per kilogram of body mass loading dose and 0.17 g of carbohydrate . 
      per kilogram of body mass every 6 minutes during the exercise protocol. The PL 
      received an equal volume of a solution made of saccharin and aspartame. The 
      exercise protocol consisted of repeated 20-second isometric contractions of 
      quadriceps muscle at 50% maximal voluntary contraction followed by 40 seconds of 
      rest until failure occurred. Importantly, quadriceps maximal voluntary 
      contraction with SEMS was performed in the beginning and then every 5 minutes 
      during the last 3 seconds of isometric contractions throughout the exercise 
      protocol. Venous blood samples were taken preexercise, immediately postexercise, 
      and at 5 minutes postexercise and analyzed for glucose, nonesterified fatty 
      acids, and glycerol. Our results indicate that CHO ingestion increased (p < 0.05) 
      plasma glucose, but no significant differences (p > 0.05) were detected for 
      nonesterified fatty acids or glycerol. Importantly, total force output during 
      exercise protocol was higher (p < 0.05) in CHO compared with that in PL. 
      Therefore, our data suggest that CHO supplementation before and during exercise 
      may be beneficial for individuals performing high-volume resistance training.
FAU - Wax, Benjamin
AU  - Wax B
AD  - Department of Kinesiology, Mississippi State University, Mississippi State, 
      Mississippi.
FAU - Kavazis, Andreas N
AU  - Kavazis AN
FAU - Brown, Stanley P
AU  - Brown SP
LA  - eng
PT  - Journal Article
PT  - Randomized Controlled Trial
PL  - United States
TA  - J Strength Cond Res
JT  - Journal of strength and conditioning research
JID - 9415084
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Fatty Acids, Nonesterified)
RN  - IY9XDZ35W2 (Glucose)
RN  - PDC6A3C0OX (Glycerol)
SB  - IM
MH  - Adult
MH  - Dietary Carbohydrates/*administration & dosage
MH  - Dietary Supplements
MH  - Double-Blind Method
MH  - *Electric Stimulation
MH  - Fatty Acids, Nonesterified/blood
MH  - Glucose/*metabolism/pharmacokinetics
MH  - Glycerol/blood
MH  - Humans
MH  - Isometric Contraction
MH  - Male
MH  - Muscle Strength
MH  - Quadriceps Muscle/physiology
MH  - *Resistance Training/methods
MH  - Weight Lifting/*physiology
EDAT- 2013/02/28 06:00
MHDA- 2014/11/11 06:00
CRDT- 2013/02/28 06:00
PHST- 2013/02/28 06:00 [entrez]
PHST- 2013/02/28 06:00 [pubmed]
PHST- 2014/11/11 06:00 [medline]
AID - 10.1519/JSC.0b013e31828c26ec [doi]
PST - ppublish
SO  - J Strength Cond Res. 2013 Nov;27(11):3084-90. doi: 10.1519/JSC.0b013e31828c26ec.