Influence of circadian rhythms on the temporal features of motor imagery for older adult inpatients

Archives of Physical Medicine and Rehabilitation
Thomas RulleauLucette Toussaint

Abstract

To examine the circadian modulation on motor imagery quality for older adult inpatients to determine the best time of day to use motor imagery in rehabilitation activities. Time series posttest only. Inpatient rehabilitation center. Participants included older adult inpatients (N=34) who were hospitalized for diverse geriatric or neurogeriatric reasons. They were able to sit without assistance, manipulate objects, and walk 10m in <30 seconds without technical help or with a walking stick. None. The executed and imagined durations of writing and walking movements were recorded 7 times a day (9:15 am-4:45 pm), at times compatible with the hours of rehabilitation activities. Motor imagery quality was evaluated by computing the isochrony index (ie, absolute difference between the average duration of executed and imagined actions) for each trial and each inpatient. The cosinor method was used to analyze the time series for circadian rhythmicity. Imagined movements duration and isochrony index exhibited circadian modulations, whereas no such rhythmic changes appeared for executed movements. Motor imagery quality was better late in the morning, at approximately 10:18 am and 12:10 pm for writing and walking, respectively. Cognitive and...Continue Reading

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Citations

Oct 17, 2017·Journal of Aging and Physical Activity·Nicolas RobinStephane Sinnapah
May 24, 2021·Annals of Physical and Rehabilitation Medicine·Dylan Rannaud MonanyFlorent Lebon

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