Biomedical subjects

Dominique Deviterne

Publications and source records attributed to Dominique Deviterne.

6 recordsLinked to original sources

PubMed2006

Age-related part taken by attentional cognitive processes in standing postural control in a dual-task context.

The aim of this work was to determine the effects of ageing on the possible mobilisation of cognitive processes in orthostatic postural balance. Seventy-nine individuals of three different age groups were placed in dual-task situations that combined standing postural control with three different cognitive tasks. Two of these three tasks, auditory-verbal and visual-verbal ones, required external information acquisition whereas the third, a mental counting task, did not require such information. The results showed contrasting variations in postural control performances that are an improvement in young subjects during cognitive tasks which required external information acquisition and a deterioration in elderly subjects during cognitive tasks which did not involve external information acquisition. The middle-aged subjects tended to develop these two types of variations simultaneously. These results confirm that cognitive processes could have a role that increases with age in ensuring postural control. The contrasting results observed between the young and old populations highlight that the allocation of cognitive resources to postural control could, on the one hand, contribute to improving postural performance in subjects with mainly automated control and, on the other, perturb this performance in subjects with mainly cognitive control.

Adult↗

PubMed2005

Prevalence of sensory and cognitive disabilities and falls, and their relationships: a community-based study.

This study assessed the prevalence of sensory and cognitive disabilities and falls for various age groups, sexes, and socio-occupational categories, and their associations in the Lorraine population. The sample included 6,159 subjects, aged 15 years or more, randomly selected from the Lorraine population. They filled in a mailed questionnaire including socio-demographic characteristics, job, falls with physical injuries at the time of the survey, and sensory and cognitive disabilities. Data analysis was made via the adjusted odds ratios. The prevalences of sensory and cognitive disabilities were 3.0 and 4.7%, respectively, that of falls with physical injuries 2.4%: 1.2% for falls on the same level and 1.2% for falls to a lower level. Subjects aged over 70 were markedly affected, but the other age groups had relatively high prevalences as well; the workmen had the highest prevalence, followed by the foremen, farmers, craftsmen and tradesmen, and employees. A twofold risk independently of age, sex and job was found for the subjects with sensory or cognitive disabilities for all falls combined. These findings show the high prevalences of sensory and cognitive disabilities and falls with physical injuries, and their strong associations in the general population. Preventive measures are needed to detect and follow up the persons with these disabilities, limit their risk of falls and reduce occupational hazards.

Accidental Falls↗

PubMed2005

Added cognitive load through rotary auditory stimulation can improve the quality of postural control in the elderly.

This study examined the effect of rotary auditory stimulation on postural control in the elderly. Thirty-two subjects aged over sixty were submitted to two rotary auditory stimulations, with a meaningful and a non-meaningful message, during a postural task. Although the non-meaningful task did not lead to postural control modification, the meaningful task allowed a reduction in the postural parameter values and therefore, a better stabilisation of posture. The attention, paid to the geography of the sound in understanding the story being told, forced the subject into taking into consideration the regularity and rotation of the stimulation, which meant relying on an auditory anchorage and so facilitated posture regulation.

Acoustic Stimulation↗

PubMed2004

Higher visual dependency increases balance control perturbation during cognitive task fulfilment in elderly people.

Ageing results in a decrease in balance control and correlatively raises the risk of falling. Furthermore, dual task situations can increase this age-related imbalance. Within this context, this study aimed to determine the differentiated effects of carrying out cognitive tasks on balance control in 40 healthy older adults. The visuo-verbal Stroop task did not affect postural regulation precision whereas a mental counting task provoked higher instability. Moreover, the results showed a correlation between the degree of visual dependency and postural perturbation. Executing a mental counting task can cause reorientation of visual attention from external landmarks to internal visual images of the calculation. As elderly subjects are more dependent on visual information to ensure balance control, this loss of external visual anchorage when executing a mental task therefore explains the balance perturbation observed.

Aged↗

PubMed2004

Effect of age at thyroid stimulating hormone normalization on postural control in children with congenital hypothyroidism.

Neonatal screening programmes allow early treatment to limit the consequences of congenital hypothyroidism on maturation of the central nervous system, and on psychomotor and educational outcome. Consequences of age at thyroid stimulating hormone (TSH) normalization on postural control were evaluated in 17 children with congenital hypothyroidism (14 females, three males; median age 12 years 1 month, range 7 to 14 years) and in 11 control individuals (eight females, three males: median age 10 years 6 months, range 8 to 14 years). Children with congenital hypothyroidism were split into two groups according to time of TSH normalization: before (group 1) or after (group 2) 3 months of age. Posturography (static and dynamic tests), educational (school performance), and psychomotor (WISC and revised Bruininks Oseretsky tests) evaluations were carried out. Group 2 results showed significant abnormalities in postural, educational, and psychomotor aptitudes in comparison with group 1 and control children (stability, Bruininks-Oseretsky, school performance: p < or = 0.05 or p < or = 0.01). Early TSH normalization is necessary to allow for normal development of the neurosensorial afferent pathways (vestibular, proprioceptive) and of central integration (cerebellum, vestibular nuclei).

Adolescent↗

PubMed2002

Judo, better than dance, develops sensorimotor adaptabilities involved in balance control.

OBJECTIVES: Training allows sportsmen to acquire new balance control abilities, possibly differing according to the discipline practised. We compared, by means of static and dynamic posturographic tests, the postural skills of high-level judoists, professional dancers and controls, in order to determine whether these sports improved postural control. RESULTS: With eyes open, judoists and dancers performed better than controls, indicating a positive effect of training on sensorimotor adaptabilities. Yet, with eyes closed, only judoists retained a significantly better stance. CONCLUSIONS: These data indicate that the practice of a high-skill activity involving proprioceptive afferences especially improves both performance and balance control.

Adult↗