Abstract
Charcot Marie Tooth disease (CMT) has negative functional impact on postural control of children; however, it has not been widely studied. Stabilometry can provide insights about postural control and guide preventive interventions in immature perceptual and musculoskeletal systems as those seen in children with CMT. This cross-sectional study aimed to identify and interpret stabilometric variables that reflect the postural control of children with CMT. 53 subjects (age 6–17) were assigned to one of the two groups: CMT (15 males and 14 females with CMT) or Control (13 males and 11 females healthy). Quiet standing was tested in different conditions: with open and closed eyes on regular surface (open-regular, closed-regular) and foam surface (open-foam, closed-foam) using a force platform. The minimum of 2 and maximum of 3 trials of 30 seconds for each test condition provided the classical stabilometric variables and Romberg Quotient (RQv). CMT group showed increase of confidence ellipse area, mean velocity, mediolateral and anteroposterior velocities associated with decreased mean body oscillation frequency, as the complexity of tasks increased. CMT postural deficit was identified by greater and faster sway associated with these lower frequencies, when compared to Control.
Highlights
Adequate static and dynamic balance depend on the normal mechanisms of postural control, biomechanical factors[1] and neuromuscular factors, including the integration of visual sensory, vestibular and somatosensory information[2]
An objective method of analyzing postural control is stabilometry, the diverse number of variables and methods used by authors prevent interpretations and comparisons between studies[13,14,15,16] The position and displacement of the center of pressure (CoP), i.e the point of the reaction force when it is applied to the ground on the support base, allows for obtaining derivative variables that signal greater or lesser postural stability
If the most common Charcot Marie Tooth disease (CMT) types manifest during childhood, and balance may be impaired, there will be an increased propensity to comorbidities that lead to a sedentary lifestyle after sprains[31,37], falls and fractures[38,39,40] the present study aimed to identify and interpret stabilometric variables that assess the static postural control of children and adolescents with Hereditary sensory-motor neuropathies (HSMN)
Summary
Adequate static and dynamic balance depend on the normal mechanisms of postural control, biomechanical factors[1] and neuromuscular factors, including the integration of visual sensory, vestibular and somatosensory information[2]. Hereditary sensorimotor neuropathy in childhood and stabilometry studies in the literature have described that an adult-like postural control is reached only after the age of 14 [10,11,12]. A review based on 14 studies showed decreased postural sway with increasing age and increased sway, with the absence of visual feedback[17]. Studies using semi-tandem posture show that postural stability is achieved between 7 and 10 years of age and remains stable from 10 to 11 years. After that, it was considered compatible with adults[8]
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