Effect of movement‐evoked and tonic experimental pain on muscle force production

Introduction When performing an exercise or a functional test, pain that is evoked by movement or muscle contraction could be a stronger stimulus for changing how individuals move compared to tonic pain. We investigated whether the decrease in muscle force production is larger when experimentally‐in...

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Published in:Scandinavian journal of medicine & science in sports 2024-01, Vol.34 (1), p.e14509-n/a
Main Authors: Cabral, Hélio V., Devecchi, Valter, Oxendale, Chelsea, Jenkinson, Ned, Falla, Deborah, Gallina, Alessio
Format: Article
Language:English
Subjects:
Electric Stimulation - methods
electrical stimulation
Electromyography - methods
Humans
Isometric Contraction - physiology
Knee
Knee - physiology
Knee Joint - physiology
motor adaptation
Muscle contraction
Muscle Contraction - physiology
Muscle, Skeletal - physiology
Original
Pain
Torque
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Summary:Introduction When performing an exercise or a functional test, pain that is evoked by movement or muscle contraction could be a stronger stimulus for changing how individuals move compared to tonic pain. We investigated whether the decrease in muscle force production is larger when experimentally‐induced knee pain is directly associated to the torque produced (movement‐evoked) compared to a constant painful stimulation (tonic). Methods Twenty‐one participants performed three isometric knee extension maximal voluntary contractions without pain (baseline), during pain, and after pain. Knee pain was induced using sinusoidal electrical stimuli at 10 Hz over the infrapatellar fat pad, applied continuously or modulated proportionally to the knee extension torque. Peak torque and contraction duration were averaged across repetitions and normalized to baseline. Results During tonic pain, participants reported lower pain intensity during the contraction than at rest (p 
ISSN:0905-7188
1600-0838
DOI:10.1111/sms.14509