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The influence of lower-limb dominance on postural balance

机译：下肢优势对姿势平衡的影响

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CONTEXT AND OBJECTIVE: 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. DESIGN AND SETTING: This was a cross-sectional study conducted at Faculdade de Medicina da Universidade de S?o Paulo (FMUSP) and at Hospital do Cora??o (HCor). METHODS: 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. RESULTS: 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). CONCLUSION: The lower-limb dominance did not influence single-foot balance among sedentary males.
机译：背景与目的：保持姿势平衡需要检测身体运动，将感觉信息整合到中枢神经系统中并进行适当的运动反应。这项研究的目的是评估下肢优势度是否对姿势平衡产生影响。设计与环境：这是在圣保罗大学医学院（FMUSP）和科拉索医院（HCor）进行的横断面研究。方法：评估了40名20至40岁健康久坐的男性，未受伤。使用Biodex平衡系统设备进行单脚平衡测试，比较同一个人的优势腿和非优势腿。使用的不稳定方案为8级（较稳定）和2级（较不稳定），并计算了三个不稳定指数：前后，中间和一般。结果：志愿者的平均年龄为26±5岁（范围：20-38），平均体重为72.3±11 kg（范围：46-107），平均身高为176±6 cm（范围：169-186）。其中三十四（85％）人表现出右腿优势（根据他们踢踢的那条腿定义），六人（15％）具有左腿优势。对于任何不稳定性指标（一般，前后位和中外侧），在两个稳定性水平（八个和两个）上，优势腿和非优势腿之间没有显着差异。结论：下肢优势不影响久坐男性的单脚平衡。

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