Volume 23, Issue 7 pp. 1329-1339
ORIGINAL ARTICLE

Exercise-induced hypoalgesia is present in people with Parkinson’s disease: Two observational cross-sectional studies

Vanessa Nguy

Vanessa Nguy

Faculty of Health Sciences, The University of Sydney, Sydney, Australia

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Benjamin K. Barry

Benjamin K. Barry

School of Medical Sciences, University of New South Wales, Sydney, Australia

Neuroscience Research Australia, Sydney, Australia

School of Clinical Medicine, The University of Queensland, Brisbane, Australia

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Niamh Moloney

Niamh Moloney

Department of Health Sciences, Macquarie University, Sydney, Australia

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Leanne M. Hassett

Leanne M. Hassett

Faculty of Health Sciences, The University of Sydney, Sydney, Australia

School of Public Health, The University of Sydney, Sydney, Australia

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Colleen G. Canning

Colleen G. Canning

Faculty of Health Sciences, The University of Sydney, Sydney, Australia

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Simon J. G. Lewis

Simon J. G. Lewis

The Brain and Mind Centre, The University of Sydney, Sydney, Australia

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Natalie E. Allen

Corresponding Author

Natalie E. Allen

Faculty of Health Sciences, The University of Sydney, Sydney, Australia

Correspondence

Natalie E. Allen, Faculty of Health Sciences, The University of Sydney, PO Box 170, Lidcombe, NSW, Australia, 1825.

Email: [email protected]

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First published: 13 April 2019
Citations: 14

Funding information

Parkinson’s NSW Bendigo Bank Parkinson’s Research Grant.

Abstract

Background

Exercise is prescribed for people with Parkinson’s disease to address motor and non-motor impairments, including pain. Exercise-induced hypoalgesia (i.e., an immediate reduction in pain sensitivity following exercise) is reported in the general population; however, the immediate response of pain sensitivity to exercise in people with Parkinson’s disease is unknown. The purpose of this study was to investigate if exercise-induced hypoalgesia is present following isometric and aerobic exercise in people with Parkinson’s disease, and if so, if it varies with the dose of aerobic exercise.

Methods

Thirty people with idiopathic Parkinson’s disease and pain-free age-matched controls completed two observational studies evaluating the response to: (a) right arm isometric exercise; and (b) treadmill walking at low and moderate intensities. Pressure pain thresholds were measured over biceps brachii and quadriceps muscles immediately before and after exercise, with increased thresholds after exercise indicating exercise-induced hypoalgesia.

Results

Pressure pain thresholds increased in the Parkinson’s disease group at all tested sites following all exercise bouts (e.g., isometric exercise, right bicep 29%; aerobic exercise, quadriceps, moderate intensity 8.9%, low intensity 7.1% (p ≤ 0.008)), with no effect of aerobic exercise dose (p = 0.159). Similar results were found in the control group.

Conclusions

Overall, people with Parkinson’s disease experienced an exercise-induced hypoalgesia response similar to that of the control group, the extent of which did not vary between mild and moderate doses of aerobic exercise. Further research is warranted to investigate potential longer term benefits from exercise in the management of pain in this population.

Significance

Isometric and aerobic exercise reduces pain sensitivity in people with Parkinson’s disease. As exercise is important for people with Parkinson’s disease, these results provide assurance that people with Parkinson’s disease and pain can exercise without an immediate increase in pain sensitivity. The reduction in pain sensitivity with both modes and with low and moderate intensities of aerobic exercise suggests that people with Parkinson’s disease can safely choose the mode and intensity of exercise that best suits their needs.

CONFLICT OF INTEREST

None declared.

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