PMID- 11447365
OWN - NLM
STAT- MEDLINE
DCOM- 20011018
LR  - 20220310
IS  - 0022-4707 (Print)
IS  - 0022-4707 (Linking)
VI  - 41
IP  - 2
DP  - 2001 Jun
TI  - The effects of supplemental carbohydrate ingestion on intermittent isokinetic leg 
      exercise.
PG  - 216-22
AB  - BACKGROUND: The purpose of this investigation was to examine the effects of 
      carbohydrate (CHO) supplementation on isokinetic leg extension/flexion exercise 
      performance, blood glucose responses, blood free fatty acid (FFA) responses, and 
      blood lactate (La) responses. METHODS: Eight resistance trained males 
      (mean+/-SEM, age: 23.7+/-1.3 yrs, height: 180.0+/-3.5 cm, bodymass: 94.9+/-4.9 
      kg) participated in a randomized, double blind protocol with testing sessions 
      separated by 7-d. Subjects were given CHO or placebo (P) while performing 16 sets 
      of 10 repetitions at 120 degrees x s(-1) on a Cybex isokinetic dynamometer. 
      Performance variables measured were; total work (TW), average work (AW), peak 
      torque (PT) and average torque (AT). Plasma glucose (PG), FFA, and La were 
      measured prior to testing (PRE), after set 8 (MID), and 16 (POST). RESULTS: 
      Results indicated that the CHO treatment elicited significantly (p<0.05) more TW 
      (CHO: 41.1+/-3.9 kJ; P: 38.1+/-3.9 kJ) and AW (CHO: 2.6+/-0.2 kJ; P: 2.4+/-0.2 
      kJ). There were no differences (p<0.05) between treatments for PT of the 
      hamstrings (CHO: 91.6+/-6.5 Nm; P: 87.4+/-8.5 Nm) and quadriceps (CHO: 
      129.7+/-9.5 Nm; P: 123.0+/-10.6 Nm). The AT of the hamstrings (CHO: 77.8+/-5.2 
      Nm; P: 75.7+/-8.7 Nm) and quadriceps (CHO: 116.9+/-8.9 Nm; P: 110.0+/-8.5 Nm) 
      were not statistically different (p>0.05) between the treatments. PG was 
      significantly higher at the POST blood draw in the CHO treatment. No significant 
      differences (p>0.05) were observed between the treatments for FFA and La 
      concentrations. CONCLUSIONS: The data from this investigation indicate that the 
      use of CHO supplementation during isokinetic leg exercise allows for the 
      performance of more work.
FAU - Haff, G G
AU  - Haff GG
AD  - Exercise Physiology Laboratory, Appalachian State University, Boone, NC 28608, 
      USA.
FAU - Schroeder, C A
AU  - Schroeder CA
FAU - Koch, A J
AU  - Koch AJ
FAU - Kuphal, K E
AU  - Kuphal KE
FAU - Comeau, M J
AU  - Comeau MJ
FAU - Potteiger, J A
AU  - Potteiger JA
LA  - eng
PT  - Clinical Trial
PT  - Journal Article
PT  - Randomized Controlled Trial
PT  - Research Support, Non-U.S. Gov't
PL  - Italy
TA  - J Sports Med Phys Fitness
JT  - The Journal of sports medicine and physical fitness
JID - 0376337
RN  - 0 (Dietary Carbohydrates)
SB  - IM
MH  - Adult
MH  - Analysis of Variance
MH  - Cross-Over Studies
MH  - Dietary Carbohydrates/*administration & dosage
MH  - Double-Blind Method
MH  - *Exercise
MH  - Humans
MH  - Male
MH  - *Physical Endurance
MH  - *Weight Lifting
EDAT- 2001/07/12 10:00
MHDA- 2001/10/19 10:01
CRDT- 2001/07/12 10:00
PHST- 2001/07/12 10:00 [pubmed]
PHST- 2001/10/19 10:01 [medline]
PHST- 2001/07/12 10:00 [entrez]
PST - ppublish
SO  - J Sports Med Phys Fitness. 2001 Jun;41(2):216-22.