TWIN Exoskeleton Stability Metrics During Walking and Sit-to-Stand Tasks

This pilot study dataset contains kinematic measurements from five healthy adults performing walking and sit-to-stand tasks while wearing a TWIN lower-limb rehabilitation exoskeleton. It quantifies mechanical stability via the standard deviation of relative displacement (RDstd) between exoskeleton cuffs and anatomical segments, and human-exoskeleton kinematic discrepancy (HEKD) for hip and knee joints. The data includes results for both thigh and shank segments across two functional tasks.

Use Cases

• Compare RDstd values at the thigh and shank between walking and sit-to-stand tasks to assess task-dependent stability.
• Analyze HEKD for hip and knee joints to evaluate human-exoskeleton kinematic coupling accuracy.
• Correlate relative displacement measurements with safety thresholds, such as the 11.7 mm onset-of-skin-damage value.
• Benchmark TWIN exoskeleton RDstd results against values from other devices, like a Hip Active Orthosis (4.0-6.3 mm).

Strengths

• Provides specific, quantified stability metrics: RDstd values range from 1.4 ± 0.1 mm to 4.6 ± 1.5 mm.
• Reports human-exoskeleton kinematic discrepancy (HEKD) with low angular errors, e.g., 1.7 ± 0.6 deg for hip during walking.
• Includes data from two distinct functional tasks: walking and sit-to-stand.
• All participants reported no discomfort or pain, indicating good tolerability.

Limitations

• Small sample size of only five healthy adult participants limits statistical power and generalizability.
• Data is from a pilot study with a single exoskeleton model (TWIN), restricting comparative analysis.
• No raw columnar data or row count is provided, only aggregated summary statistics in the description.

Provenance

Source

Simona Squartecchia via figshare.

Collection Method

Optoelectronic motion capture tracked markers on anatomical landmarks and exoskeleton segments during prescribed tasks.

Freshness

Last updated 2026-03-20.