Benoît Mauvieux

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BACKGROUND . Mental practice through motor imagery improves subsequent motor performance and thus mental training is considered to be a potential tool in neuromotor rehabilitation. OBJECTIVE . The authors investigated whether a circadian fluctuation of the motor imagery process occurs, which could be relevant in scheduling mental training in(More)
Hypergravity disrupts the circadian regulation of temperature (Temp) and locomotor activity (Act) mediated through the vestibular otolithic system in mice. In contrast, we do not know whether the anatomical structures associated with vestibular input are crucial for circadian rhythm regulation at 1 G on Earth. In the present study we observed the effects of(More)
We present an identification algorithm for determining the variables characterizing a circadian rhythm. This method is based on a recursive least square algorithm combined with an appropriate observer. It has the advantage of determining all the parameters of a time-varying circadian rhythm without requiring the knowledge of the period. A comparison study(More)
Multi-day single-handed sailing races put exceptional strain on sailors, requiring high cognitive functioning and 24 h per day readiness to perform. Fatigue from sleep loss, circadian misalignment, workload and other factors is of significant concern, jeopardizing competitiveness as well as safety. Almost no research has been devoted to this, in part(More)
The aim of this study was to show the resistance and persistence of the circadian rhythm of temperature (T degree) and the sleep quality of athletic subjects and sedentary subjects engaged in night work, and attempt to explain the mechanisms that influence these differences. The effects of night work on biological rhythms have been studied extensively in(More)
The choice of the period is a problematic in the field of the analysis of rhythms which is not yet sufficiently formalized in the sense that it was often postulated that the period is known and more precisely in the case of the circadian rhythms. We propose some methods which have a great reliability in the determination of the period and consequently can(More)
OBJECTIVE 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. DESIGN Time series posttest only. SETTING Inpatient rehabilitation center. PARTICIPANTS Participants included older adult inpatients (N=34) who were hospitalized for(More)
Simon Folkard in 1997 introduced the phrase black time to draw attention to the fact that the risk of driving accidents (DA) is greater during the night than day in usually diurnally active persons. The 24 h temporal pattern in DA entails circadian rhythms of fatigue and sleep propensity, cognitive and physical performance, and behavior that are controlled,(More)
The circadian time structure of an organism can be desynchronized in a large number of instances, including the intake of specific drugs. We have previously found that propofol, which is a general anesthetic, induces a desynchronization of the circadian time structure in rats, with a 60-80 min significant phase advance of body temperature circadian rhythm.(More)
We investigated the circadian synchronization/desynchronization (by field-study assessment of differences in period, τ, of 16 coexisting and well-documented rhythms) of 30 healthy firemen (FM) exposed to irregular, difficult, and stressful nocturnal work hours who demonstrated excellent clinical tolerance (allochronism). Three groups of FM were studied (A =(More)