Effect of diathermy on muscle temperature, electromyography, and mechanomyography
| Autor: | Sarah M. Mitchell, Cynthia A. Trowbridge, Joel T. Cramer, A. Louise Fincher |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Adult
Male medicine.medical_specialty Adolescent Physiology medicine.medical_treatment Isometric exercise Electromyography Musculotendinous stiffness Body Temperature Cellular and Molecular Neuroscience Diathermy Physiology (medical) medicine Humans Muscle Skeletal Analysis of Variance medicine.diagnostic_test business.industry Reproducibility of Results Motor control Signal Processing Computer-Assisted musculoskeletal system Mean frequency Electric Stimulation Biomechanical Phenomena Surgery body regions Anesthesia Stress Mechanical Neurology (clinical) medicine.symptom business After treatment Muscle Contraction Muscle contraction |
| Zdroj: | Muscle & Nerve. 38:992-1004 |
| ISSN: | 1097-4598 0148-639X |
| DOI: | 10.1002/mus.21084 |
| Popis: | This study examined the effects of pulsed shortwave diathermy on intramuscular temperature, surface electromyography (EMG), and mechanomyography (MMG) of the vastus lateralis. Thirty-five men were assigned to diathermy (n = 13), sham-diathermy (n = 12), or control (n = 10) groups. Each subject performed isometric maximal voluntary contractions (MVCs) and incremental ramp contractions (10%–90% MVC) before and after treatment. Torque, intramuscular temperature, EMG, and MMG were recorded. Temperature for the diathermy group increased (P ≤ 0.05). MMG amplitude and instantaneous mean frequency (IMF) increased (P ≤ 0.05) during the MVCs with the greatest increases observed for the diathermy group. During ramp contractions, MMG amplitude and IMF increased at all percentages of MVC (10%–90%) for the diathermy group only (P ≤ 0.05). There were no changes in MVC torque, EMG amplitude, or IMF. Diathermy treatments may decrease musculotendinous stiffness, but not absolute strength or motor control strategies that influence force production. Muscle Nerve, 2008 |
| Databáze: | OpenAIRE |
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