Alonso Angélica Castilho, Brech Guilherme Carlos, Bourquin Andréia Moraes, Greve Julia Maria D'Andréa
Institute of Orthopedics and Traumatology, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.
Sao Paulo Med J. 2011 Dec;129(6):410-3. doi: 10.1590/s1516-31802011000600007.
Maintainance of postural balance requires detection of body movements, integration of sensory information in the central nervous system and an appropriate motor response. The purpose of this study was to evaluate whether lower-limb dominance has an influence on postural balance.
This was a cross-sectional study conducted at Faculdade de Medicina da Universidade de São Paulo (FMUSP) and at Hospital do Coração (HCor).
Forty healthy sedentary males aged 20 to 40 years, without any injuries, were evaluated. A single-foot balance test was carried out using the Biodex Balance System equipment, comparing the dominant leg with the nondominant leg of the same individual. The instability protocols used were level 8 (more stable) and level 2 (less stable), and three instability indices were calculated: anteroposterior, mediolateral and general.
The volunteers' mean age was 26 ± 5 years (range: 20-38), mean weight 72.3 ± 11 kg (range: 46-107) and mean height 176 ± 6 cm (range: 169-186). Thirty-four of them (85%) presented right-leg dominance (defined according to which leg they used for kicking) and six (15%) had left-leg dominance. There were no significant differences between the dominant and nondominant legs at the two levels of stability (eight and two), for any of the instability indices (general, anteroposterior and mediolateral).
The lower-limb dominance did not influence single-foot balance among sedentary males.
维持姿势平衡需要检测身体运动、在中枢神经系统中整合感觉信息以及做出适当的运动反应。本研究的目的是评估下肢优势是否对姿势平衡有影响。
这是一项在圣保罗大学医学院（FMUSP）和心脏医院（HCor）进行的横断面研究。
对40名年龄在20至40岁之间、无任何损伤的健康久坐男性进行评估。使用Biodex平衡系统设备进行单脚平衡测试，比较同一个体的优势腿和非优势腿。使用的不稳定方案为8级（更稳定）和2级（较不稳定），并计算了三个不稳定指数：前后向、内外侧和总体。
志愿者的平均年龄为26±5岁（范围：20 - 38岁），平均体重72.3±11千克（范围：46 - 107千克），平均身高176±6厘米（范围：169 - 186厘米）。其中34人（85%）表现为右腿优势（根据他们用于踢球的腿来定义），6人（15%）为左腿优势。在两个稳定水平（8级和2级）下，对于任何不稳定指数（总体、前后向和内外侧），优势腿和非优势腿之间均无显著差异。
下肢优势对久坐男性的单脚平衡没有影响。
