RT Journal Article
SR Electronic
A1 Płaszewski, Maciej
T1 Knee extensor muscles' torque during isometric exercises and russian electrical stimulation following a knee ligament injury
JF Acta Universitatis Palackianae Olomucensis. Gymnica
YR 2007
VO 37
IS 1
SP 31
OP 36
UL https://gymnica.upol.cz/artkey/gym-200701-0004.php
AB Voluntary isometric exercise (VOL) and neuromuscular electrical stimulation (NMES) are both methods of static muscle strength and girth training. They are applied in strength training programs to healthy muscle as well as for muscle function recovery under certain orthopaedic conditions. Both methods are used to retard muscle atrophy and strength loss resulting from post injury knee immobilization (Eriksson & Häggmark, 1979; Ingemann-Hansen & Halkjær-Kristensen, 1985; Johnson, 1988; Wigerstad-Lossing, Tromby, Jonsson, Morelli, Peterson, & Rentröm, 1988). NMES can elicit twitch or tetanic muscle contractions, determined by current pulse frequency. During tetanic stimulation, the main features of training regimes are: 1) on/off cycle (or duty cycle), made up of the time of contraction plus rest time; 2) the number of contractions; 3) the intensity of contractions (determined by the current amplitude and/or the subject's tolerance).