Journal: Frontiers in Physiology

Article Title: Passive Exoskeleton-Assisted Gait Shows a Unique Interlimb Coordination Signature Without Restricting Regular Walking

doi: 10.3389/fphys.2022.916185

Figure Lengend Snippet: A participant with the passive exoskeleton attached to their right dominant leg. The spring is attached to a cable called the Exotendon, which can be tightened by the disk on the waist. While a person is in the stance phase of gait, the spring is extended, storing energy. When a person propels forward, the spring provides assistance by returning the energy. The figure also shows the positions of the retro-reflective markers that were used in the study.

Article Snippet: Exoskeleton: The exoskeleton device, used in this project, was the KickstartTM Walking System (Cadence Biomedical, Seattle, WA).

Techniques:

Journal: Frontiers in Physiology

Article Title: Passive Exoskeleton-Assisted Gait Shows a Unique Interlimb Coordination Signature Without Restricting Regular Walking

doi: 10.3389/fphys.2022.916185

Figure Lengend Snippet: (A) and (B) shows the state space reconstruction figures from representative participants. Each set of three figures show state space reconstruction for left heel marker movement (red), right heel marker movement (blue), and combined. Axis t 1 (x) shows the original time series of heel marker movement. Based on the time delay that was found, axis t 2 (x) and t 3 (x) were created [e.g. if time delay was 3, t 2 (x) would be t 1 (x + 3) and t 3 (x) would t 2 (x + 3)]. (A) top shows the reconstruction figure of a participant walking without an exoskeleton (NO EXO), and (A) bottom shows the reconstruction figure of a participant with the exoskeleton (EXO). For both participants, the overall gait dynamics in each leg was similar, showing a teardrop like shape. This indicates that even with exoskeleton assistance, the normal cyclical, rhythmic pattern in each leg was not impacted. (B) shows the state space reconstruction figure of a participant performing a split belt adaptation task. This is the same EXO participant from (A) performing a different study. During the split belt task, the left leg was slower than the right, altering the reconstructed state space.

Article Snippet: Exoskeleton: The exoskeleton device, used in this project, was the KickstartTM Walking System (Cadence Biomedical, Seattle, WA).

Techniques: Marker

Journal: Frontiers in Physiology

Article Title: Passive Exoskeleton-Assisted Gait Shows a Unique Interlimb Coordination Signature Without Restricting Regular Walking

doi: 10.3389/fphys.2022.916185

Figure Lengend Snippet: (A) and (B) shows the recurrence plot of one participant from each group. These are the same participants as in . (A) shows the recurrence plot of a participant walking without an exoskeleton (NO EXO). (B) shows the recurrence plot of a participant walking with exoskeleton assistance (EXO). The inset figure is a zoomed in section showing diagonals on the recurrence plot whose length characterize the duration of inter-limb coordination while synchrony is characterized by the presence of similar patterns within the plot.

Article Snippet: Exoskeleton: The exoskeleton device, used in this project, was the KickstartTM Walking System (Cadence Biomedical, Seattle, WA).

Techniques: