دورية أكاديمية
Effect of extension of the ulnar fingers on force control and muscle activity of the hand during a precision pinch.
| العنوان: | Effect of extension of the ulnar fingers on force control and muscle activity of the hand during a precision pinch. |
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| المؤلفون: | Date S; Laboratory of Analysis and Control of Upper Extremity Function, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan., Kurumadani H; Laboratory of Analysis and Control of Upper Extremity Function, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan., Kurauchi K; Laboratory of Analysis and Control of Upper Extremity Function, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan., Fukushima T; Laboratory of Analysis and Control of Upper Extremity Function, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan., Goto N; Laboratory of Analysis and Control of Upper Extremity Function, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan., Sunagawa T; Laboratory of Analysis and Control of Upper Extremity Function, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan. |
| المصدر: | The Journal of hand surgery, European volume [J Hand Surg Eur Vol] 2024 May; Vol. 49 (5), pp. 608-616. Date of Electronic Publication: 2023 Nov 07. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Sage Publications Country of Publication: England NLM ID: 101315820 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 2043-6289 (Electronic) Linking ISSN: 02667681 NLM ISO Abbreviation: J Hand Surg Eur Vol Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: <2009-> : London : Sage Publications Original Publication: Oxford : Elsevier |
| مواضيع طبية MeSH: | Electromyography* , Muscle, Skeletal*/physiology , Fingers*/physiology, Humans ; Male ; Adult ; Female ; Young Adult ; Pinch Strength/physiology ; Hand Strength/physiology |
| مستخلص: | Some individuals extend the three ulnar fingers when performing a precision pinch. The aim of the present study was to investigate the mechanisms and effect of the extension of the ulnar fingers during a pinch. When performing a pulp pinch task with the ulnar fingers in two positions (extension and flexion), 27 participants maintained 5% of their maximum force. The mean pinch force, force variability and time taken to reach the targeted force (reaching time) were calculated. Muscle activity was simultaneously measured, using surface electromyography, for nine muscles: the flexor pollicis brevis; abductor pollicis brevis; flexor pollicis longus; first lumbrical; first dorsal interosseous; flexor digitorum superficialis of the index finger; extensor indicis; and extensor digitorum of the index and ring fingers. No significant differences in the mean pinch force or force variability were found. However, the reaching time was significantly shorter (approximately 20% reduction) in the extension position and the activities in the flexor pollicis brevis, first lumbrical, extensor indicis and extensor digitorum of the ring finger were significantly higher. These findings suggest that extending the ulnar fingers during pinching enhances the activity of key muscles involved in the movement and allows for more rapid force exertion. Competing Interests: Declaration of conflicting interestsThe authors declare no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. |
| فهرسة مساهمة: | Keywords: Electromyography; finger; finger enslaving; force; hand; joint position; motor control |
| تواريخ الأحداث: | Date Created: 20231107 Date Completed: 20240424 Latest Revision: 20240424 |
| رمز التحديث: | 20240425 |
| DOI: | 10.1177/17531934231211254 |
| PMID: | 37933731 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 2043-6289 |
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| DOI: | 10.1177/17531934231211254 |