Assessment of impulse duration thresholds for electrical stimulation of muscles (chronaxy) in dogs
| Autor: | David Levine, Serge G. Sawaya, Delphine Combet, Denis J. Marcellin-Little, Guillaume Chanoit, Jean Jacques Thiebault |
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| Rok vydání: | 2008 |
| Předmět: |
Time Factors
Contraction (grammar) Muscle Fibers Skeletal Stimulation Hindlimb Biceps Dogs Species Specificity Animals Humans Medicine Muscle Skeletal Tibialis Cranialis General Veterinary biology business.industry General Medicine Anatomy musculoskeletal system biology.organism_classification Electric Stimulation Kinetics Medius Rheobase medicine.anatomical_structure Sensory Thresholds Forelimb business Muscle Contraction |
| Zdroj: | American Journal of Veterinary Research. 69:1305-1309 |
| ISSN: | 0002-9645 |
| DOI: | 10.2460/ajvr.69.10.1305 |
| Popis: | Objective—To determine the electrical impulse duration thresholds (chronaxy) for maximal motor contraction of various muscles without stimulation of pain fibers in dogs. Animals—10 healthy adult Beagles. Procedures—The dogs were used to assess the minimal intensity (rheobase) required to elicit motor contraction of 11 muscles (5 in the forelimb [supraspinatus, infraspinatus, deltoideus, lateral head of the triceps brachii, and extensor carpi radialis], 5 in the hind limb [gluteus medius, biceps femoris, semitendinosus, vastus lateralis, and tibialis cranialis], and the erector spinae). The rheobase was used to determine the chronaxy for each of the 11 muscles in the 10 dogs; chronaxy values were compared with those reported for the corresponding muscles in humans. Results—Compared with values in humans, chronaxy values for stimulation of AA motor fibers in the biceps femoris and semitendinosus muscles and muscles of the more distal portions of limbs were lower in dogs. For the other muscles evaluated, chronaxy values did not differ between dogs and humans. Conclusions and Clinical Relevance—Application of the dog-specific chronaxy values when performing electrical stimulation for strengthening muscles or providing pain relief is likely to minimize the pain perceived during treatment in dogs. |
| Databáze: | OpenAIRE |
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