title: Concurrent validity of Physiological Cost Index in walking over ground and during robotic training in subacute stroke patients.
abstract: Physiological Cost Index (PCI) has been proposed to assess gait demand. The purpose of the study was to establish whether PCI is a valid indicator in subacute stroke patients of energy cost of walking in different walking conditions, that is, over ground and on the Gait Trainer (GT) with body weight support (BWS). The study tested if correlations exist between PCI and ECW, indicating validity of the measure and, by implication, validity of PCI. Six patients (patient group (PG)) with subacute stroke and 6 healthy age- and size-matched subjects as control group (CG) performed, in a random sequence in different days, walking tests overground and on the GT with 0, 30, and 50% BWS. There was a good to excellent correlation between PCI and ECW in the observed walking conditions: in PG Pearson correlation was 0.919 (p < 0.001); in CG Pearson correlation was 0.852 (p < 0.001). In conclusion, the high significant correlations between PCI and ECW, in all the observed walking conditions, suggest that PCI is a valid outcome measure in subacute stroke patients.
authors: Santa Lucia Foundation, I.R.C.C.S., Via Ardeatina 306, 00179 Rome, Italy.
authors: Anna Sofia
authors: 0000-0002-3978-5349
authors: AS
authors: Delussu
authors: Santa Lucia Foundation, I.R.C.C.S., Via Ardeatina 306, 00179 Rome, Italy.
authors: Giovanni
authors: 0000-0003-3602-4197
authors: G
authors: Morone
authors: Santa Lucia Foundation, I.R.C.C.S., Via Ardeatina 306, 00179 Rome, Italy.
authors: Marco
authors: 0000-0003-2434-3887
authors: M
authors: Iosa
authors: Santa Lucia Foundation, I.R.C.C.S., Via Ardeatina 306, 00179 Rome, Italy.
authors: Maura
authors: M
authors: Bragoni
authors: Santa Lucia Foundation, I.R.C.C.S., Via Ardeatina 306, 00179 Rome, Italy.
authors: Stefano
authors: S
authors: Paolucci
authors: Santa Lucia Foundation, I.R.C.C.S., Via Ardeatina 306, 00179 Rome, Italy.
authors: Marco
authors: M
authors: Traballesi
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D005684:Gait; D006801:Humans; D008297:Male; D008875:Middle Aged; D012371:Robotics; D020521:Stroke / Q000503:physiopathology*; D000071939:Stroke Rehabilitation; D016138:Walking