期刊
ACTA NEUROLOGICA SCANDINAVICA
卷 132, 期 6, 页码 395-400出版社
WILEY
DOI: 10.1111/ane.12406
关键词
hyposmia; olfaction; Parkinson's disease; single photon emission computed tomography (SPECT); training effect
资金
- Riisfort foundation
Background Up to 90% of patients with Parkinson's disease (PD) exhibit olfactory dysfunction, but little is known about the effects of olfactory training. The study aim was to investigate whether the ability to identify olfactory stimuli can be improved by means of a brief training session. Furthermore, the impact of hyposmia on quality of life in PD was investigated by means of a questionnaire. Methods Olfactory function was rated in 34 patients with PD and in 26 controls before and after a training session. An additional 20 patients with PD served as a control group and were tested twice without an intervening training session. Long-term effects were evaluated in a small subset of patients. Cognitive tests and DaT SPECT scans were performed. Results We demonstrated significant same-day and long-term training effects in trained PD patients compared with non-trained PD patients. A slightly significant correlation was seen between the training effect and DaT putamen values, but not with cognitive test scores. Furthermore, patients with PD reported that hyposmia significantly decreased their quality of life. Conclusions Patients with PD improved the number of correctly identified odors in an olfactory test through a brief training session. Olfactory training may have potential in rehabilitation of patients with PD.
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