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- Title
Mirror Therapy Reduces Pain and Preserves Corticomotor Excitability in Human Experimental Skeletal Muscle Pain.
- Authors
Nishi, Keita; Moriuchi, Takefumi; Okamura, Ryohei; Hasegawa, Takashi; Chang, Xiaoqian; Matsumoto, Shinichi; Koseki, Hironobu; Higashi, Toshio
- Abstract
Approaches to preserve corticomotor excitability (CE) are attracting interest as a treatment for pain-induced changes in neural plasticity. We determined the effects of mirror therapy (MT) on skeletal muscle pain. Fifteen healthy adults who received hypertonic saline injections (5.8% NaCl, 0.2 mL) into the first dorsal interosseous (FDI) muscle of the right hand to induce experimental skeletal muscle pain were assigned to either the "MT and injection" or "injection only" group. Post-injection, the "MT and injection" group observed their left index finger abducting and adducting for 4 min, creating the illusion that the right index finger was moving. The "injection only" group remained at rest. CE and pain were assessed by measuring motor-evoked potentials (MEPs) of the right FDI triggered by transcranial magnetic stimulation and the numerical rating scale (NRS), respectively. MEP amplitudes were significantly higher in the "MT and injection" group, a trend that persisted post-MT intervention (MT intervention; p < 0.01, post-1; p < 0.05). The time for the NRS score to reach 0 was notably shorter in the "MT and injection" group (p < 0.05). Our preliminary results suggested that MT decreases CE and pain in skeletal muscles, potentially preventing neural plasticity changes associated with skeletal muscle pain and providing early pain relief.
- Subjects
MYALGIA; SKELETAL muscle; PAIN management; PHANTOM limbs; TRANSCRANIAL magnetic stimulation; EVOKED potentials (Electrophysiology)
- Publication
Brain Sciences (2076-3425), 2024, Vol 14, Issue 3, p206
- ISSN
2076-3425
- Publication type
Article
- DOI
10.3390/brainsci14030206