Análise cinemática da marcha com medidas normalizadas e não-normalizadas em indivíduos hígidos: um estudo experimental / Kinematic gait analysis with normalized and non-normalized measurements in healthy individuals: an experimental study

O objetivo deste estudo foi analisar as possíveis relações entre a variável antropométrica comprimento dos membros inferiores e de passada na marcha, com valores naturais e normalizados, em velocidade auto-selecionada e acrescida de 50%, em indivíduos adultos jovens. Foram avaliados 32 sujeitos hígidos adultos entre 18-25 anos. Os deslocamentos corporais nas duas velocidades foram registrados através da técnica de cineantropometria, utilizando o software Skillspector® para quantificar o comprimento da passada entre as médias dos dados normalizadas e não-normalizadas, do segmento direito e do segmento esquerdo. A comparação entre os valores médios das passadas normalizadas e não-normalizadas, nas diferentes velocidades, foi realizada por meio do teste t student (p < 0,05), assim como o grau de associação entre o comprimento da passada e o comprimento do membro inferior, realizada pelo teste de correlação de Pearson (p < 0,05). Sendo assim, nosso estudo constatou uma correlação positiva entre as variáveis estudadas, nas duas velocidades e, uma diferença entre a passada com dados normalizados e não normalizados, em ambas as velocidades. (AU)

The aim of this study was to analyze the possible relationships between the anthropometric variable length of the lower limbs and gait stride, with natural and normalized values, at self-selected speed and increased by 50%, in young adult individuals. 32 healthy adult subjects aged 18-25 years were evaluated. Body movements at both speeds were recorded using the kinanthropometry technique, using the Skillspector® software to quantify the stride length between the normalized and nonnormalized data averages for the right and left segments. The comparison between the mean values of normalized and non-normalized strides, at different speeds, was performed using the Student t test (p < 0.05), as well as the degree of association between stride length and lower limb length, performed by the Pearson correlation test (p < 0.05). Thus, our study found a positive correlation between the variables studied, at both speeds, and a difference between the stride with normalized and non-normalized data, at both speeds. (AU)

Controlled Study of Correlation of Biomechanical Profile of Hemiparetic Patients with Distance Travelled in Six Minutes.

The six-minute walking test (6MWT) is used to assess exercise tolerance that is associated with motor function of the lower limbs in hemiparetic patients. It is suggested that, for post-stroke subjects, performance in the 6MWT may be limited by biomechanical and cardiovascular factors. Our aim is to determine the correlation between the six-minute walk distance (6MWD) and the biomechanical profile of hemiparetic patients. During this cross-sectional controlled study, 10 hemiparetic patients with heart failure underwent 6MWT (ATS protocol). Tonus (Ashworth Scale) and goniometry of the lower limbs were measured. The average of 6MWD in two tests was 279±8 m. There was a negative correlation between the degree of spasticity for both the sural triceps (r=-0.57, P<0.05), quadriceps (r=-0.58, P<0.05) and the limitation in ankle dorsiflexion and the 6MWD (r=-0.76, P<0.05). Also, there was correlation between hip extension and ankle dorsiflexion limitations with 6MWD (r=0.66, P<0.05), (r=0.77, P<0.05). The negative correlation between the highest spasticity in paretic limb and the 6MWD and the correlation between the lower movement range of paretic hip and ankle suggest association with these factors and gait velocity in 6MWT. Loss percentage represents the percentage calculation between distance traveled and the distance predicted achieved by patients. In this study, the negative correlation between the percentage of loss of 6MWD and the limitation in the ankle dorsiflexion movement suggests that for a minor motion arch of the ankle, there is a higher percentage of walking distance loss foretold.