6533b827fe1ef96bd1287112
RESEARCH PRODUCT
Interrelationships between electromyographic, mechanical, muscle structure and reflex time measurements in man.
Paavo V. KomiJukka T. Viitasalosubject
AdultMaleMuscle biopsyTime Factorsmedicine.diagnostic_testPhysiologyChemistryElectromyographyMuscle RelaxationMusclesPatellar reflexAnatomyElectromyographyIsometric exerciseMuscle relaxationIsometric ContractionMotor unit recruitmentReflexReflexmedicineReaction TimeHumansmedicine.symptomMuscle contractionMuscle Contractiondescription
Reaction time (TRT) with its premotor (PMT) and motor time (MT) components, patellar reflex time (TRfT) with its latency (LAT) and motor time (RfMT) were studied together with isometric force production and relaxation time variables in one leg isometric knee extension. These variables were intercorrelated together with muscle biopsy variables taken from m. vastus lateralis. From these computations MT proved to demonstrate significant correlations to rate of isometric force development (RFD) (P less than 0.001), maximum force (P0) (P less than 0.001) and per cent distribution of ST fibers (P less than 0.001). It is speculated that these relationships are determined by the pattern of the motor unit recruitment and by different characteristics of the slow and fast twitch muscle fibers to trigger the excitation-contraction coupling.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1981-01-01 | Acta physiologica Scandinavica |