کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5864755 1135929 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of prior experience and task stability on the intrinsic muscle activity of the thumb
ترجمه فارسی عنوان
اثر تجربه قبلی و ثبات کار بر فعالیت عضلانی ذاتا انگشت شست
کلمات کلیدی
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی طب مکمل و جایگزین
چکیده انگلیسی
Manual techniques involving the use of the thumb are commonly employed by physical therapists for treating patients with vertebral disorders. The demands on the intrinsic muscles of the thumb in these manual tasks are very different from those of the pinch tasks. The aim of this study was to investigate the influence of clinical experience and different mobilization techniques on the electromyographic activity (EMG) of thumb intrinsic muscles. Fifteen participants without exposure to manual techniques (the Novice Group) and fifteen physical therapists with at least 3 years of orthopaedic experience (the Experienced Group) participated. Each participant exerted thumb tip forces with 3 different posterioanterior (PA) glide techniques including unsupported, with digital support and with thumb interphalangeal joint supported by the index finger. The exerted force was increased from 25% to 100% maximum force at 25% increments on a 6 component load cell. The thumb tip force and EMG activity of four intrinsic muscles (flexor pollicis brevis, adductor pollicis, abductor pollicis brevis, first dorsal interosseus) were recorded with surface electrodes. Both experience and technique influenced intrinsic muscle activity of the thumb. While participants of both groups generated the same magnitude of force, experienced participants generated less intrinsic muscle activity while performing PA glide through practice. However, novice participants increased activity of the intrinsic muscles in accordance with the stability status of the technique. PA glide with thumb interphalangeal joint supported by the index finger was a more stable technique as evidenced by smallest relative errors of thumb tip force.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Manual Therapy - Volume 19, Issue 5, October 2014, Pages 484-489
نویسندگان
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