Walking on split-belt treadmills (each belt rotating at a different velocity) has inspired a growing number of researchers to study gait adaptation and rehabilitation. An overlooked peculiarity of this artificial form of gait is that the mean velocity adopted by the participant, considered as a whole system represented by the body Center of Mass (CoM), can be different from the mean velocity of the two belts. Twelve healthy adults (21-34 years) were requested to walk for 15 minutes on a treadmill with belts rotating at 0.4 and 1.2 m s-1, respectively (mean 0.8 m s-1). Each belt was supported by four 3D force sensors. For each participant, six strides were analyzed during the 1st and the 15th minute of the trial. The mean CoM velocity was computed as the sum of the velocities of each belt weighted by the percentage of time during which the resulting forces, underlying the accelerations of the CoM, originated from each belt. Across early and late observations, the median CoM velocities were 0.72 m s-1 and 0.67 m s-1, respectively (p<0.05). Therefore, the real velocity of the CoM and its time course should be individually assessed when studying walking on split-belt treadmills.

Velocity of the body center of mass during walking on split-belt treadmill / L. Tesio, S. Scarano, V. Cerina, C. Malloggi, L. Catino. - In: AMERICAN JOURNAL OF PHYSICAL MEDICINE & REHABILITATION. - ISSN 0894-9115. - 100:6(2021 Jun 01), pp. 620-624. [10.1097/PHM.0000000000001674]

Velocity of the body center of mass during walking on split-belt treadmill

L. Tesio
Primo
;
S. Scarano
Secondo
;
L. Catino
Ultimo
2021

Abstract

Walking on split-belt treadmills (each belt rotating at a different velocity) has inspired a growing number of researchers to study gait adaptation and rehabilitation. An overlooked peculiarity of this artificial form of gait is that the mean velocity adopted by the participant, considered as a whole system represented by the body Center of Mass (CoM), can be different from the mean velocity of the two belts. Twelve healthy adults (21-34 years) were requested to walk for 15 minutes on a treadmill with belts rotating at 0.4 and 1.2 m s-1, respectively (mean 0.8 m s-1). Each belt was supported by four 3D force sensors. For each participant, six strides were analyzed during the 1st and the 15th minute of the trial. The mean CoM velocity was computed as the sum of the velocities of each belt weighted by the percentage of time during which the resulting forces, underlying the accelerations of the CoM, originated from each belt. Across early and late observations, the median CoM velocities were 0.72 m s-1 and 0.67 m s-1, respectively (p<0.05). Therefore, the real velocity of the CoM and its time course should be individually assessed when studying walking on split-belt treadmills.
split-belt treadmill; walking; center of mass; rehabilitation
Settore MED/34 - Medicina Fisica e Riabilitativa
23-feb-2021
Article (author)
File in questo prodotto:
File Dimensione Formato  
Velocity of the body center of mass during walking on split-belt treadmill.pdf

accesso aperto

Descrizione: Articolo principale.
Tipologia: Publisher's version/PDF
Dimensione 181.56 kB
Formato Adobe PDF
181.56 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/820609
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 3
social impact