Late-breaking abstract: Evaluation and comparison of functional capacity to incremental shuttle walk test and maximal exercising test on treadmill in obese women

The Incremental Shuttle Walk Test (ISWT) has been increasingly used and may constitute a method for assessing functional capacity in obese population. However, if ISWT represents maximal exercise effort and produces similar cardiorespiratory responses in obese women remains to be investigated. The aims was compare the cardiorespiratory responses between obese and eutrophic during the ISWT and the cardiopulmonary exercise testing (CPET). Twenty-nine women (17 obese), allocated in the obese group (OG) and eutrophic group (EG), performed two ISWT and a CPET on a treadmill (Bruce protocol). Heart rate (HR) was determined before and after each test. Ventilatory (VE) and metabolic (VO2; VCO2) measurements were collected breath by breath with a portable ergoespirometer (Oxycon mobile; CareFusion-Germany). We considered the results of the second ISWT to statistical analysis. Oxygen uptake (ml/kg/min) as well as distance walked and time of the test were significantly lower in the OG in both tests (ISWT: p Grants: FAPESP (09/01842-0;10/03030-0).