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Author(s): Huxhold, Oliver; Li, Schu-Chen; Schmiedek, Florian; Smith, Jacqui; Lindenberger, Ulman
Title: Age differences in processing fluctuations in postural control across
trials and across days
In: Psychology and Aging, 26 (2011) 3, S. 731-737
DOI: 10.1037/a0024146
URL: http://dx.doi.org/10.1037/a0024146
Publication Type: 3a. Beiträge in begutachteten Zeitschriften; Aufsatz (keine besondere Kategorie)
Language: Englisch
Keywords: Deutschland; Empirische Untersuchung; Erwachsener; Kontrolle; Lebensalter; Mehrebenenanalyse; Messung; Motorik; Sensumotorik
Abstract (english): Postural control performances of 18 younger and 18 older adults were repeatedly measured on 45
weekdays with five trials per day. This design made it possible to dissociate between long-term trends
and processing fluctuations in the sensorimotor domain at moment-to-moment, trial-to-trial, and day-today
levels. Older adults fluctuated more than younger adults at all timescales. Age differences in
trial-to-trial and day-to-day processing fluctuations were reduced but remained statistically significant
when controlling for fluctuations on faster timescales. We concluded that age differences in intraindividual
fluctuations at the longer timescales are in part related to age differences in low-level system
robustness, suggesting a cascade of effects across multiple timescales.
DIPF-Departments: Bildung und Entwicklung