LINEARITY AND RELIABILITY OF THE IEMG V TORQUE RELATIONSHIP FOR THE FOREARM FLEXORS AND LEG EXTENSORS

@article{Weir1992LINEARITYAR,
  title={LINEARITY AND RELIABILITY OF THE IEMG V TORQUE RELATIONSHIP FOR THE FOREARM FLEXORS AND LEG EXTENSORS},
  author={Joseph P. Weir and Loree L. Wagner and Terry J. Housh},
  journal={American Journal of Physical Medicine \& Rehabilitation},
  year={1992},
  volume={71},
  pages={283-287}
}
The purpose of this investigation was to examine the linearity and reliability of the surface integrated electromyogram (IEMG) v isometric torque relationship for the leg extensors and forearm flexors. Nine men and four women (mean age ± SD=22 ± 2 yr) volunteered for this investigation. Isometric testing was conducted on a Cybex II isokinetic dynamometer with the lever arm at 0.785 rad (45° )below the horizontal plane for the leg extensors and in the vertical plane for the forearm flexors… 

Linearity and reliability of the mechanomyographic amplitude versus dynamic torque relationships for the superficial quadriceps femoris muscles

When using MMG in the clinical setting, dynamic muscle actions of the superficial quadriceps femoris muscles do not appear to be appropriate for assessing changes in muscle function during strength training.

Electromyographic evaluation of joint angle specificity and cross-training after isometric training.

The results indicated a cross-training effect and joint angle specificity for isometric torque in TRN only, with significant (P < 0.0005) increases in torque (collapsed across limb) at 0.26 and 0.79 rad below the horizontal plane.

The minimum number of contractions required to examine the EMG amplitude versus isometric force relationship for the vastus lateralis and vastus medialis.

Reliability of non-normalized and normalized integrated EMG during maximal isometric contractions in females.

  • D. ZakariaJ. KramerK. Harburn
  • Biology
    Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology
  • 1996

Reliability of leg muscle electromyography in vertical jumping

The results of this study suggest that while kinematic variables are reproducible over successive vertical jumps, the degree of repeatability of an IEMG signal is dependent upon the muscle studied.

The effects of joint angle on electromyographic indices of fatigue

The purpose of this study was to examine the effect of manipulation of joint angle on electromyographic (EMG) fatigue curves at different sites over the quadriceps muscle group, and it is hypothesize that the decline in MPF at 0.26 rad is due to activation failure while the increase in IEMG at0.79 rad is driven by contractile failure.

Linearity and Reliability of the Mechanomyographic Amplitude Versus Concentric Dynamic Constant External Resistance Relationships for the Bench Press Exercise

These data demonstrated that these relationships were neither linear nor reliable enough to be used for assessing issues such as the neural versus hypertrophic contributions to training-induced strength gains and the mechanisms underlying cross-education.

Electromyographic Amplitude vs. Concentric and Eccentric Squat Force Relationships for Monoarticular and Biarticular Thigh Muscles

The results demonstrated that the EMG amplitude vs. force relationships for the vastus lateralis were linear, despite the fact that force production during the squat is related to the activation of muscles that must simultaneously function as agonists and antagonists.

The effects of interelectrode distance on electromyographic amplitude and mean power frequency during isokinetic and isometric muscle actions of the biceps brachii.

  • T. BeckT. Housh M. Malek
  • Medicine
    Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology
  • 2005
...