The difference in determinant factor of six-minute walking distance between sarcopenic and non-sarcopenic elderly patients with heart failure

Abstract Background The purpose of this study was to identify the factors determining exercise capacity in elderly patients with heart failure (HF) with and without sarcopenia. Methods We studied 186 consecutive patients with HF who met the criteria of being >60 years, with no physical disability. During hospitalization, we measured the 6-min walking distance (6MWD) and other physical functional parameters and evaluated echocardiographic and laboratory measurements indicating the severity of HF. First, we divided patients into two groups (the sarcopenia group and the nonsarcopenia group) according to the presence of sarcopenia defined as fulfilling more than or equal to two criteria—body mass index Results The sarcopenia group comprised 77 patients (41.2%). In univariate analysis, age, grip strength, walking speed, and knee extensor muscle strength were significantly correlated with the 6MWD (p  Conclusion We demonstrated that knee extensor muscle strength was an independent factor determining exercise capacity—especially in elderly patients with HF with sarcopenia, and provided useful information in terms of exercise prescription.