AI Article Synopsis
- One finger's movement can unintentionally affect the movements of other fingers due to mechanical and neural limitations on finger independence.
- This study aimed to investigate how wrist and MCP postures influence involuntary finger forces and extensor digitorum activity in twenty participants.
- Results showed that flexing the MCP increased involuntary force in the index finger, highlighting the importance of anatomical connections, while wrist extension heightened ED activity compared to flexed positions.
Article Abstract
Intended actions of one finger produce involuntary movement or force in other fingers. Mechanical and neural factors limit finger independence. The interplay between anatomical factors, wrist and finger postures, and finger independence remain unclear. The purpose of this study was to determine the effects of wrist and metacarpophalangeal (MCP) posture on involuntary finger forces and extensor digitorum (ED) activity. Twenty participants performed submaximal isometric finger extensions in three wrist positions (30° extension, neutral, and 30° flexion) and two MCP postures (straight and 90° flexion). Involuntary index finger force increased with MCP flexion, suggesting the importance of intertendinous connections in finger independence. Consistent with previous research, ED activity was generally higher in wrist extension than neutral and flexed postures. Understanding the role of passive properties within the hand may help us improve finger rehabilitation strategies.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jelekin.2024.102941 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!