The aim of this study was to investigate the adaptive process in the coupling between visual information and body sway in children postural control. Twenty-seven children from 4-, 8- and 12-year-olds and ten adults stood upright inside of a moving room. In the first 2 min, the room was moved continuously at frequency of 0.2 Hz, velocity of 0.6 cm/s and amplitude of 0.5 cm. In the minute subsequent the room was moved with velocity of 3.5 and amplitude of 3.2 and in the last 2 min with velocity of 0.6 cm/s and amplitude of 0.5 cm. Gain, phase, SFSA and transient gain were used to examine the relationship between sensory information and body sway. The results showed that children and adults were capable to adapt to the changes of visual stimulus, downweighting the visual information influences when the room's amplitude/velocity increased. However, the young children did not show calibrated response to the 12-year-old children and adults level, being more influenced by the visual stimulus.

This study examined the influence of both optic flow characteristics and intention on postural control responses. Two groups of 10 adults each were exposed to the room's movement either at 0.6 cm/s (low velocity group) or 1.0 cm/s (high velocity group). All the participants stood in the upright stance inside of a moving room and were informed about the room movement only after the fourth trial as they were asked to resist to its influence. Results revealed that participants from both groups were influenced by the imposed visual stimulus in the first trials, but the coupling strength was weaker for the high velocity group. The request to resist the visual influences decreased visual influences on body sway, but only for the low velocity group. These results indicate that intention might play a role in stimulus influences on body sway but it is stimulus dependent.

No abstract

No abstract

Abstract-The purpose of this study was to investigate the effects of a multimodal exercise program (MEP) on the functional capacity of patients with Parkinson's disease (PD) according to disease severity and gender. Fourteen patients with PD participated in the study and were distributed into groups according to 1) stage of disease and 2) gender. Functional capacity was evaluated before and after 6 months of intervention. The overall PD patient group improved their coordination and strength. Men and women improved in strength performance after exercise. Men also improved on coordination. For severity of disease, the unilateral group improved in strength, while the bilateral group improved in strength, balance, coordination and the UPDRS-functional score. In conclusion, a MEP is efficient in improving components of functional capacity in patients with PD, especially in strength. Gender may be considered in the exercise program. Individuals in the bilateral disease group appeared to benefit more from exercise. Keywords: multimodal exercise program, functional capacity, Parkinson's diseaseResumo-"Efeitos de um programa de exercícios multimodal na capacidade funcional de pacientes com doença de Parkinson considerando a gravidade da doença e sexo". O objetivo deste estudo foi investigar o efeito de um programa de exercício multimodal (PEM) na capacidade funcional de pacientes com doença de Parkinson (DP), de acordo com a severidade da doença e gênero. Catorze pacientes com DP participaram do estudo, distribuídos em dois grupos: 1) severidade da doença, 2) gênero. A capacidade funcional foi avaliada antes e após 6 meses de intervenção. Em geral, os pacientes melhoraram a coordenação e força. Homens e mulheres melhoraram o desempenho da força após o exercício. Os homens também melhoraram a coordenação. Para a severidade da doença, o grupo unilateral melhorou a força, enquanto o grupo bilateral melhorou força, equilíbrio, coordenação e UPDRS funcional. Portanto, o PEM é eficiente na melhoria dos componentes da capacidade funcional de pacientes com DP, especialmente a força. O gênero deve ser considerado no programa de exercício. Pacientes no estágio bilateral parecem ter mais benefícios do exercício. Palavras-chave: programa de exercício multimodal, capacidade funcional, doença de ParkinsonResumen-"Efectos de un programa de ejercicio multimodal en la capacidad funcional de los pacientes con enfermedad de Parkinson teniendo en cuenta la gravedad de la enfermedad y el sexo". Esto estudio investigó el efecto de un programa de ejercicio multimodal (PEM) en la capacidad funcional de pacientes con enfermedad de Parkinson (EP), considerando la severidad de la enfermedad y el género. Catorce pacientes con EP participaron del estudio, distribuidos en grupos: 1) severidad de la enfermedad, 2) género. La capacidad funcional fue avaluada antes y después de 6-meses de intervención. En general, los pacientes mejoraron coordinación y fuerza. Hombres y mujeres mejoraron el desempeño de la fuerza después del ejercicio. Todavía, los homb...