PMID- 3406684
OWN - NLM
STAT- MEDLINE
DCOM- 19880922
LR  - 20041117
IS  - 0036-5505 (Print)
IS  - 0036-5505 (Linking)
VI  - 20
IP  - 2
DP  - 1988
TI  - Rank order of peak amplitude of EMG between the three muscles of triceps surae 
      during maximum isokinetic contractions.
PG  - 89-92
AB  - Peak torque (PT) of maximum isokinetic plantar flexions was measured at 4 angular 
      velocities (30, 60, 120 and 180 degrees/s) in 88 subjects. Simultaneous 
      recordings of electromyograms (low-pass filtered and rectified) were obtained 
      from the three heads of m. triceps surae. Subjects were clinically healthy 
      subjects randomly chosen in age-groups 40-44, 50-54 and 60-64 years. The delays 
      (in degrees) in range of motion (from maximum dorsiflexed position) of PT and of 
      peak value of the low-pass filtered EMG-amplitudes (pEMG) were determined and 
      ranked. pEMG of gastrocnemius medialis was reached before m. gastrocnemius 
      lateralis which reached pEMG before m. soleus. At 30 degrees/s PT coincided with 
      the pEMG of m. soleus, while at 120 and 180 degrees/s PT coincided with pEMGs of 
      mm. gastrocnemii. The fixed rank order of pEMGs in the three muscles might be a 
      reflexion of differences in the motor unit populations in the mm. gastrocnemii 
      and m. soleus. The findings indicate that the relative roles of the three 
      muscles, when torque-production is concerned, is dependent on angular velocity.
FAU - Gerdle, B
AU  - Gerdle B
AD  - National Institute of Occupational Health, Work Physiology Division, Umea, 
      Sweden.
FAU - Fugl-Meyer, A R
AU  - Fugl-Meyer AR
LA  - eng
PT  - Journal Article
PL  - Sweden
TA  - Scand J Rehabil Med
JT  - Scandinavian journal of rehabilitation medicine
JID - 0212503
SB  - IM
MH  - Adult
MH  - *Electromyography
MH  - Female
MH  - Humans
MH  - Leg
MH  - Male
MH  - Middle Aged
MH  - *Muscle Contraction
EDAT- 1988/01/01 00:00
MHDA- 1988/01/01 00:01
CRDT- 1988/01/01 00:00
PHST- 1988/01/01 00:00 [pubmed]
PHST- 1988/01/01 00:01 [medline]
PHST- 1988/01/01 00:00 [entrez]
PST - ppublish
SO  - Scand J Rehabil Med. 1988;20(2):89-92.