Gait Characteristics during Horizontal Obstacle Crossing / 中国康复理论与实践

Objective:To observe the gait characteristics related to the horizontal obstacle crossing, to optimize obstacle crossing strategy to reduce the risk of falling. Methods:A total of 15 healthy young men were recruited in September, 2019, to complete horizontal obstacle crossing tasks (0 cm, 45 cm, 55 cm and 65 cm wide), with dominant and non-dominant limbs first on a specific experimental path. Gait parameters were collected with infrared camera and biomechanics force plate. Results:As the width of the obstacle increasing, the speed, stride length, step length and toe clearance of trailing limb (TCt) increased; while the heel-to-obstacle distance (HOD) and toe-to-obstacle distance (TOD) decreased. As the non-dominant limb crossing first, the speed of following step was slower, and the TCt, step width, step length and HOD increased. Conclusion:The risk of falling increases with the width of the obstacle during horizontal obstacle crossing. It is recommended to use non-dominant limbs leading crossing, and increase stride length, step length and TCt to reduce the risk of falling.

Índice de asimetría bilateral morfológica de extremidades inferiores y superiores en jugadores de baloncesto universitario / The upper and lower limb bilateral morphological asymmetry index in university basketball players

Introducción: El baloncesto es objeto de múltiples estudios que incluye la valoración mediante tecnologías actuales como la bioimpedancia. Objetivo: Comparar los índices de asimetría (IA) de las extremidades superiores e inferiores en jugadores de baloncesto universitario por nivel deportivo. Método: Se evaluaron 24 jugadores de baloncesto de diferente nivel competitivo, representativo 1) universitario (n = 12) y 2) facultad (n = 12). Se determinó la circunferencia de brazos y piernas, además de masa magra y grasa por bioimpedancia. Se determinó el índice de asimetría de los miembros inferiores y superiores y se compararon por nivel deportivo. Resultados: La comparación de los índices de asimetría entre brazos y piernas en el grupo total identificó diferencias estadísticamente significativas (p < 0,05) en lo referente a la masa grasa, con mayor adiposidad en extremidades superiores, y un índice de asimetría de -10,8. Cuando se compararon las mismas variables en función del nivel deportivo, los jugadores representantes de la universidad mostraron mayores valores (p < 0,05) en el índice de asimetría de la masa total, circunferencias, masa magra y masa grasa. Las comparaciones intergrupales señalan diferencias en los índices de asimetría del brazo vs. la pierna en masa magra para ambos grupos (p < 0,05) mientras que los de la facultad mostraron diferencia también para grasa con índice de asimetría de 18,3 (p < 0,05). Conclusiones: Indistintamente del nivel deportivo, existen diferentes niveles del índice de asimetría entre extremidades superiores e inferiores en el componente de masa grasa, aunque menores valores del índice de asimetría fueron característicos de los individuos de mayor nivel deportivo(AU)

Introduction: Basketball has been the object of many studies, including assessments based on current technologies such as bioimpedance. Objective: Compare the asymmetry indices (AI) for upper and lower limbs in university basketball players. Methods: An evaluation was conducted of 24 basketball players from different competitive levels, representing 1) the university (n = 12) and 2) the school (n = 12). Determination was made of arm and leg circumference, as well as lean mass and fat by bioimpedance. The lower and upper limb asymmetry index was estimated and compared between the competitive levels. Results: Comparison of the arms and legs asymmetry indices in the total group revealed statistically significant differences (p < 0.05) as to fat mass, with greater adiposity in the upper limbs and an asymmetry index of 10.8. Comparison of the same variables between the sports levels found that players representing the university displayed higher values (p < 0.05) in the asymmetry index for total mass, circumferences, lean mass and fat mass. Comparison between the groups found differences in the arm vs. leg asymmetry indices for lean mass in both groups (p < 0.05), whereas the school players also showed differences for fat, with an asymmetry index of 18.3 (p < 0.05). Conclusions: Regardless of the sports level, different asymmetry indices are found between upper and lower limbs as to fat mass, though smaller asymmetry index values were characteristic of individuals from a higher sports level(AU)

Right Sensory Alien Hand Phenomenon from a Left Pontine Hemorrhage

BACKGROUND: Acute onset of a sensory alien hand phenomenon has been observed only from a supratentorial lesion involving the non-dominant hand, mostly from a right posterior cerebral artery infarction. A single acute vascular lesion resulting in a dominant hand sensory alien hand syndrome has not been previously documented. CASE REPORT: A 78-year old right-handed woman exhibited right sensory alien hand phenomenon from a left pontine hemorrhage. Disturbance of proprioceptive input and visuospatial perception are likely to play a role in manifesting the sign. CONCLUSIONS: Dominant-hand sensory alien hand phenomenon may occur in an acute setting from a left pontine hemorrhage.