Backgroud: Obesity is a major public health problem and is related to the low physical capacity when obese are compared to no-obese people, however the cause of this limitation is not completely understood. The measurement associated of physiological response to the telemetric 6MWT adds information of metabolic and respiratory system for diagnose of the functional limitation. Objective: Analyze physiological, metabolic and ventilatory responses in women with different body fat during the 6MWT. Methods: 32 women (8 non-obese, 8 Overweight, 8 Obese and 8 morbidly obese) were evaluated for anthropometry, lung function and exercise capacity. Results: Morbidly obese walked the shortest distance (400.2±38.7m), had lower VO2/Kg (12.75±3.20l/Kg/min) and lower R (0.74± 0.11) in the 6MWT compared to other groups. Analyses of metabolic (VO2 and VCO2) and respiratory (VE, VT and BF) during the test did not identify differences between groups. The evaluation of cardiac function (O2 pulse) found higher values in the OM (12.3 ± 4.9ml/bat). Conclusion: The OM had worse performance in the 6MWT compared to other groups. The physical performance may be reduced in this population related to a protocol-dependent response because the speed of 6MWT is self-adjusted allows the individual himself select the intensity of the test, making it set at a speed where there is energy saving
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机译：背景：肥胖是一个主要的公共卫生问题，与肥胖与不肥胖的人相比身体机能低下有关，但是这种局限性的原因尚不完全清楚。与遥测6MWT的生理反应相关的测量结果增加了代谢和呼吸系统信息，以诊断功能受限。目的：分析6MWT期间不同体脂女性的生理，代谢和通气反应。方法：对32名妇女进行了人体测量，肺功能和运动能力评估（8名非肥胖，8名超重，8名肥胖和8名病态肥胖）。结果：与其他组相比，在6MWT中病态肥胖者行走最短距离（400.2±38.7m），VO2 / Kg（12.75±3.20l / Kg / min）低，R（0.74±0.11）低。测试期间的代谢（VO2和VCO2）和呼吸（VE，VT和BF）分析未发现两组之间的差异。对心脏功能（O2脉冲）的评估发现OM中的值更高（12.3±4.9ml / bat）。结论：与其他组相比，OM在6MWT中的表现较差。由于6MWT的速度是自动调整的，因此个人可以自己选择测试的强度，从而将其设置为节省能源的速度，因此与协议相关的响应有关的人群的身体表现可能会降低。
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