Older adults demonstrate greater accuracy in joint position matching using self-guided movements |
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| Institution: | 1. Department of Physical Therapy, Human Health Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan;2. School of Science for Open and Environmental Systems, Graduate School of Science and Technology, Keio University, Yokohama, Japan;1. School of Population and Public Health, University of British Columbia, Canada;2. British Columbia Children’s Hospital Research Institute, Canada;3. Department of Physical Therapy, Faculty of Rehabilitation Medicine, Glen Sather Sports Medicine Clinic, University of Alberta, Canada;4. Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Canada;5. Faculty of Environmental Design, University of Calgary, Canada;6. Department of Pediatrics, Faculty of Medicine, University of British Columbia, Canada;7. The Alberta Children’s Hospital Research Institute for Child and Maternal Health, Cumming School of Medicine, University of Calgary, Canada;1. School of Health & Rehabilitation Sciences, The University of Queensland, St Lucia, Queensland 4072, Australia;2. La Trobe Sport and Exercise Medicine Research Centre, College of Science, Health and Engineering, La Trobe University, Bundoora, Victoria 3086, Australia;3. School of Biomedical Sciences, The University of Queensland, St Lucia, Queensland, 4072, Australia |
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| Abstract: | Greater proprioceptive accuracy has been found with active compared to passive movement. Therapeutic approaches in rehabilitation include varying levels of assistance with arm movements. This assistance may impact proprioceptive acuity. Eighteen older adults participated in a joint repositioning study. The ability to independently reproduce a shoulder flexion angle was investigated when the reference angle was set under the following conditions: (1) the examiner actively assisted participant’s motion to the reference angle chosen by the examiner, (2) the participant moved independently, but the examiner provided tactile cueing to stop at the reference angle chosen by the examiner, and (3) the participant independently moved to a self-selected reference angle. Participants were most accurate in the self-guided condition compared to the active assisted or tactile cueing conditions. Both the self-guided and tactilely cued conditions involved active movement, yet accuracy differed. In contrast, there was no difference in accuracy between the active assisted and tactile cueing conditions despite one involving more active movement. The results demonstrate active movement alone does not determine accuracy. External stimuli, either tactile input and/or a reference angle chosen by the examiner may diminish accuracy. This can be clinically relevant as proprioceptive performance has been linked to improved motor performance. |
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| Keywords: | Older adults Proprioception Shoulder Rehabilitation |
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