PMID- 9286742
OWN - NLM
STAT- MEDLINE
DCOM- 19971008
LR  - 20191102
IS  - 1050-1606 (Print)
IS  - 1050-1606 (Linking)
VI  - 7
IP  - 3
DP  - 1997 Sep
TI  - The effect of preexercise carbohydrate status on resistance exercise performance.
PG  - 185-96
AB  - The purpose of this study was to determine the effect of a high vs. a low 
      preexercise carbohydrate (CHO) diet on performance during multiple sets of 
      resistance exercise. Eleven resistance-trained males performed cycle ergometry to 
      deplete quadriceps muscle glycogen stores, followed by 48 hr of a high (HICHO) or 
      a low (LOCHO) CHO diet. Subjects then performed five sets each of squats, leg 
      presses, and knee extensions (resistance = 15 RM) to failure. Blood samples were 
      taken before and during exercise for determination of glucose and lactate (LA). 
      No differences in performance (repetitions x weight lifted) were observed (HICHO 
      = 15,975 +/- 1,381 and LOCHO = 15,723 +/- 1,231 kg). Blood glucose was 
      significantly higher after exercise for HICHO compared to LOCHO (HICHO = 4.8 +/- 
      0.2 vs. LOCHO = 3.9 +/- 0.2 mmol.L-1). No differences in LA accumulation were 
      observed. The data indicated that preexercise CHO status did not affect 
      resistance exercise performance. Further, the differences in blood glucose and 
      the similarity in LA responses suggest that glycolysis was maintained in the 
      LOCHO condition, and there may have been an increased reliance on blood glucose 
      when preexercise CHO status was low.
FAU - Mitchell, J B
AU  - Mitchell JB
AD  - Exercise Physiology Laboratory, Texas Christian University, Fort Worth 76129, 
      USA.
FAU - DiLauro, P C
AU  - DiLauro PC
FAU - Pizza, F X
AU  - Pizza FX
FAU - Cavender, D L
AU  - Cavender DL
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Int J Sport Nutr
JT  - International journal of sport nutrition
JID - 9307702
RN  - 0 (Blood Glucose)
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Lactates)
SB  - IM
MH  - Adult
MH  - Blood Glucose/*drug effects
MH  - Dietary Carbohydrates/*administration & dosage/pharmacology
MH  - Exercise/*physiology
MH  - Humans
MH  - Lactates/*blood
MH  - Male
MH  - Weight Lifting/physiology
EDAT- 1997/09/01 00:00
MHDA- 1997/09/01 00:01
CRDT- 1997/09/01 00:00
PHST- 1997/09/01 00:00 [pubmed]
PHST- 1997/09/01 00:01 [medline]
PHST- 1997/09/01 00:00 [entrez]
AID - 10.1123/ijsn.7.3.185 [doi]
PST - ppublish
SO  - Int J Sport Nutr. 1997 Sep;7(3):185-96. doi: 10.1123/ijsn.7.3.185.