PT Journal
AU Plaszewski, M
TI Knee extensor muscles' torque during isometric exercises and russian electrical stimulation following a knee ligament injury
SO Acta Universitatis Palackianae Olomucensis. Gymnica
PY 2007
BP 31
EP 36
VL 37
IS 1
DE Knee ligament injury; disuse atrophy; isometric exercise; Russian electrical stimulation
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 & Haggmark, 1979; Ingemann-Hansen & Halkjaer-Kristensen, 1985; Johnson, 1988; Wigerstad-Lossing, Tromby, Jonsson, Morelli, Peterson, & Rentrom, 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).
ER