Effects of orthoses on muscle activity and synergy during gait
An orthosis is often used in rehabilitation to improve kinetic and kinematic parameters during gait. However, whether changes in neural control depend on wearing an orthosis during gait is unclear. We measured the muscle activity and synergy of the lower limb muscles without orthosis and with two ty...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2023-01-01
|
| Series: | PLoS ONE |
| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9910715/?tool=EBI |
| _version_ | 1811166108294578176 |
|---|---|
| author | Yu Hashiguchi Ryosuke Goto Toru Naka |
| author_facet | Yu Hashiguchi Ryosuke Goto Toru Naka |
| author_sort | Yu Hashiguchi |
| collection | DOAJ |
| description | An orthosis is often used in rehabilitation to improve kinetic and kinematic parameters during gait. However, whether changes in neural control depend on wearing an orthosis during gait is unclear. We measured the muscle activity and synergy of the lower limb muscles without orthosis and with two types of orthoses: ankle–foot orthosis (AFO) and knee–ankle–foot orthosis (KAFO). Muscle activity during gait was measured in 15 healthy adults, and muscle synergies were extracted using non-negative matrix factorization. The results revealed that some muscle activities were significantly different among the three conditions. Post-hoc analysis indicated differences between each condition. Knee extensor muscle activity related to the loading response was significantly increased by wearing the AFO. In the KAFO condition, hip abductor muscle activity related to weight bearing was significantly decreased, and ankle dorsiflexor muscle activity was increased to secure clearance during the swing phase. However, the number of muscle synergies and complexity of muscle synergy did not significantly change among these conditions. However, along with changes in muscle activity, the activation pattern and weightings of muscle synergies tended to change with the use of orthoses. Each muscle activity was changed by wearing the orthosis; however, the immediate mechanical constraint did not change the framework of muscle synergy. |
| first_indexed | 2024-04-10T15:47:11Z |
| format | Article |
| id | doaj.art-2e5b968e6d114c36914f1b8afe978e3e |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-10T15:47:11Z |
| publishDate | 2023-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-2e5b968e6d114c36914f1b8afe978e3e2023-02-12T05:31:12ZengPublic Library of Science (PLoS)PLoS ONE1932-62032023-01-01182Effects of orthoses on muscle activity and synergy during gaitYu HashiguchiRyosuke GotoToru NakaAn orthosis is often used in rehabilitation to improve kinetic and kinematic parameters during gait. However, whether changes in neural control depend on wearing an orthosis during gait is unclear. We measured the muscle activity and synergy of the lower limb muscles without orthosis and with two types of orthoses: ankle–foot orthosis (AFO) and knee–ankle–foot orthosis (KAFO). Muscle activity during gait was measured in 15 healthy adults, and muscle synergies were extracted using non-negative matrix factorization. The results revealed that some muscle activities were significantly different among the three conditions. Post-hoc analysis indicated differences between each condition. Knee extensor muscle activity related to the loading response was significantly increased by wearing the AFO. In the KAFO condition, hip abductor muscle activity related to weight bearing was significantly decreased, and ankle dorsiflexor muscle activity was increased to secure clearance during the swing phase. However, the number of muscle synergies and complexity of muscle synergy did not significantly change among these conditions. However, along with changes in muscle activity, the activation pattern and weightings of muscle synergies tended to change with the use of orthoses. Each muscle activity was changed by wearing the orthosis; however, the immediate mechanical constraint did not change the framework of muscle synergy.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9910715/?tool=EBI |
| spellingShingle | Yu Hashiguchi Ryosuke Goto Toru Naka Effects of orthoses on muscle activity and synergy during gait PLoS ONE |
| title | Effects of orthoses on muscle activity and synergy during gait |
| title_full | Effects of orthoses on muscle activity and synergy during gait |
| title_fullStr | Effects of orthoses on muscle activity and synergy during gait |
| title_full_unstemmed | Effects of orthoses on muscle activity and synergy during gait |
| title_short | Effects of orthoses on muscle activity and synergy during gait |
| title_sort | effects of orthoses on muscle activity and synergy during gait |
| url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9910715/?tool=EBI |
| work_keys_str_mv | AT yuhashiguchi effectsoforthosesonmuscleactivityandsynergyduringgait AT ryosukegoto effectsoforthosesonmuscleactivityandsynergyduringgait AT torunaka effectsoforthosesonmuscleactivityandsynergyduringgait |