Corrigendum to "Lower lean mass and higher percent fat mass in patients with Alzheimer's disease" [Exp. Gerontol. 58 (2014) 30-33]

The authors regret to report a miscalculation of three bioelectrical variables, namely specific resistance, specific reactance and specific impedance, in the sample of patients with Alzheimer's disease. The correct values are: Rsp (men: 410.4 ± 49.3; women: 441.1 ± 66.2); Xcsp (men: 38.1 ± 5.6; women: 38.3 ± 7.4); Zsp (men: 412.1 ± 49.3; women: 442.9 ± 66.4). Phase angle values have been unaffected by the error. As in the original paper, patients have a significantly lower specific reactance and phase angle than the reference population (p = 0.000). Also the internal comparisons of bioelectrical variables are unchanged: female patients with worse cognitive and functional impairment show a lower phase angle and a longer vector, respectively. In contrast to the original results, Rsp and Zsp values are not yet significantly higher in patients than in the reference population. However, a new research (Mereu et al., Exp Gerontol, 102:145–148, 2018, https://doi.org/10.1016/j.exger.2017.11.011) performed in a larger sample of patients with Alzheimer's disease and using a control of healthy elders better matched for age and population confirms and strengthens the conclusions obtained in the paper by Buffa et al. (2014): a lower phase and a longer vector in patients with Alzheimer's disease, i.e., lower lean mass and higher percent fat mass. The authors apologise for any inconvenience caused.