Effect of prior experience and task stability on the intrinsic muscle activity of the thumb |
| |
| Affiliation: | 1. Department of Physical Therapy, Tzu Hui Institute of Technology, Nanchou Hsian, Ping Tung, Taiwan;2. Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan;3. Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan;4. Department of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan;1. The University of Queensland, School of Health & Rehabilitation Sciences, Centre of Clinical Research Excellence in Spinal Pain Injury and Health, Sports Injury Rehabilitation and Prevention for Health Research Unit, Australia;2. Toowong Rehabilitation Centre, Queensland, Australia;1. Department of Physiotherapy, Józef Rusiecki University College, Bydgoska 33, 10-243 Olsztyn, Poland;2. Rehasport Clinic, Poznań, Poland;3. Department of Pediatric Orthopedics and Traumatology, University of Medical Sciences in Poznań, Poland;1. School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK;2. National Council for Osteopathic Research, Barts and The London School of Medicine and Dentistry, Centre for Primary Care and Public Health, Yvonne Carter Building, 58 Turner Street, London E1 2AB, UK;3. School of Health Professions, University of Brighton, 49, Darley Road, Eastbourne, East Sussex BN20 7UR, UK;1. School of Physiotherapy, Faculty of Health Sciences, Australian Catholic University, PO Box 456, Brisbane, Virginia, QLD 4014, Australia;2. The University of Queensland, School of Information Technology and Electrical Engineering, Brisbane, Australia;3. Brisbane Orthopaedic & Sports Medicine Centre, Brisbane, Australia;1. Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium;2. Department of Otorhinolaryngology, Antwerp University Hospital, Edegem, Belgium;3. Department of Physical Medicine and Rehabilitation, Antwerp University Hospital, Edegem, Belgium;4. Faculty of Sciences, University of Antwerp, Antwerp, Belgium;5. Multidisciplinary Motor Centre Antwerp, University of Antwerp, Antwerp, Belgium |
| |
| Abstract: | 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. |
| |
| Keywords: | Thumb Muscles Electromyography Joint mobilization |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
