@article{ref1,
title="Age-related difficulty in rhythmic movement",
journal="Nippon Ronen Igakkai Zasshi",
year="1994",
author="Hashizume, K. and Nagasaki, H. and Ito, H. and Furuna, T. and Sugiura, M. and Kinugasa, T. and Maruyama, H.",
volume="31",
number="5",
pages="360-365",
abstract="In order to identify a characteristic difficulty in rhythmic movements with aging, a total of 380 healthy participants aged from 18 to 85 years (group 1), and 1,134 elderly community residents aged from 65 to 89 years (group 2), were examined using a finger-tapping test. The test requested the participant to tap in time to a periodic sound train with frequencies of 2, 3, 4, and 5 Hz (cycles/sec) for group 1, and with 4 Hz for group 2. Tapping deviated towards a faster rate from the stimulus frequency by more than 3 msec at 4 Hz and/or 5 Hz, &quot;hastened tap&quot; (HT), was found to be characteristic of aging. In group 1, the participants who exhibited HT increased with age and reached more than 35% in their 60s and 70s. In group 2, the percentages of participants with HT at 4 Hz were 14.6 (60s), 15.9 (70s) and 29.3 (80s), which were very close to the 16.9% of participants with HT at 4 Hz over 65 years in group 1. This figure suggested that more than 50% of participants over 80 years exhibited HT in tapping test at 2 through 5 Hz. HT in the elderly appears to be similar to hastened tapping observed typically in patients with Parkinson's disease, suggesting a parallel of extrapyramidal motor dysfunction between normal aging and parkinsonism.<p /><p>Language: ja</p>",
language="ja",
issn="0300-9173",
doi="",
url="http://dx.doi.org/"
}