Estimation of maximal muscle electromyographic activity from the relationship between muscle activity and voluntary activation
| Autor: | Kenzo C Kishimoto, Jane E. Butler, Martin E. Héroux, Simon C. Gandevia, Joanna Diong |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Adult
Male 030506 rehabilitation medicine.medical_specialty Physiology Young Adult 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation Isometric Contraction Physiology (medical) medicine Humans Range of Motion Articular Muscle activity Muscle Skeletal Electromyography business.industry Twitch interpolation Middle Aged medicine.anatomical_structure Torque Female Ankle 0305 other medical science business 030217 neurology & neurosurgery Muscle Contraction |
| Zdroj: | Journal of Applied Physiology. 130:1352-1361 |
| ISSN: | 1522-1601 8750-7587 |
| DOI: | 10.1152/japplphysiol.00557.2020 |
| Popis: | Maximal muscle activity recorded with surface electromyography (EMG) is an important neurophysiological measure. It is frequently used to normalize EMG activity recorded during passive or active movement. However, the true maximal muscle activity cannot be determined in people with impaired capacity to voluntarily activate their muscles. Here, we determined whether maximal muscle activity can be estimated from muscle activity produced during submaximal voluntary activation. Twenty-five able-bodied adults (18 males, mean age 29 yr, range 19-64 yr) participated in the study. Participants were seated with the knee flexed 90° and the ankle in 5° of dorsiflexion from neutral. Participants performed isometric voluntary ankle plantarflexion contractions at target torques, in random order: 1, 5, 10, 15, 25, 50, 75, 90, 95, and 100% of maximal voluntary torque. Ankle torque, muscle activity in soleus, medial and lateral gastrocnemius muscles, and voluntary muscle activation determined using twitch interpolation were recorded. There was a strong log |
| Databáze: | OpenAIRE |
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