PMID- 12671194
OWN - NLM
STAT- MEDLINE
DCOM- 20030610
LR  - 20220321
IS  - 1066-7814 (Print)
IS  - 1066-7814 (Linking)
VI  - 28
IP  - 1
DP  - 2003 Feb
TI  - Muscle activation is enhanced with multi- and uni-articular bilateral versus 
      unilateral contractions.
PG  - 38-52
AB  - Ten resistance trained (RT) and 6 non-resistance trained (NRT) subjects were used 
      to determine differences in quadriceps activation between isometric single and 
      double knee extensions and squat contractions. Greater inactivation, as measured 
      by the interpolated twitch technique, was recorded with single (RT: 16.5%, NRT: 
      17.6%) than double leg extensions (RT: 8.4%, NRT: 13.4%) or squats (RT: 4.03%, 
      NRT: 1.7%). There was no significant difference between the maximum voluntary 
      contraction (MVC) force of the dominant leg during single and double leg 
      extensions. However, in NRT subjects, the contralateral or non-dominant leg 
      during double leg extensions exhibited significantly less force than the dominant 
      leg (715.9 vs 566.9 N). This deficit may be due to a lesser reliance on the 
      non-dominant limb. The contractions of multiple lower body muscle groups enhanced 
      the activation of the dominant quadriceps. Greater levels of activation may be 
      necessary to cope with the stabilization necessary for bilateral and 
      multi-articular contractions.
FAU - Behm, David G
AU  - Behm DG
AD  - School of Human Kinetics and Recreation, Memorial University of Newfoundland, St. 
      John's, Newfoundland.
FAU - Power, Kevin E
AU  - Power KE
FAU - Drinkwater, Eric J
AU  - Drinkwater EJ
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Can J Appl Physiol
JT  - Canadian journal of applied physiology = Revue canadienne de physiologie 
      appliquee
JID - 9306274
SB  - IM
MH  - Adult
MH  - Analysis of Variance
MH  - Biomechanical Phenomena
MH  - Electric Stimulation
MH  - Electromyography
MH  - Humans
MH  - Leg/*physiology
MH  - Male
MH  - Muscle Contraction/*physiology
MH  - Muscle, Skeletal/*physiology
MH  - Physical Education and Training
MH  - Signal Processing, Computer-Assisted
MH  - Torque
EDAT- 2003/04/03 05:00
MHDA- 2003/06/11 05:00
CRDT- 2003/04/03 05:00
PHST- 2003/04/03 05:00 [pubmed]
PHST- 2003/06/11 05:00 [medline]
PHST- 2003/04/03 05:00 [entrez]
AID - 10.1139/h03-004 [doi]
PST - ppublish
SO  - Can J Appl Physiol. 2003 Feb;28(1):38-52. doi: 10.1139/h03-004.