Onshore Swimming Motion Measurement Data Using Wearable IMUs

Motion data from seventeen wireless inertial measurement units capturing full-body kinematics during onshore breaststroke, freestyle, and butterfly strokes. The dataset was created by Qiwei Zhang and published on figshare in May 2026. It includes validation metrics comparing IMU data to optical motion capture.

Use Cases

• Validate wearable sensor accuracy for motion capture based on the reported Spearman's correlation, ICC, and NRMSE metrics.
• Analyze the effect of stroke frequency on swimming speed and propulsion force using the described Newton-Euler dynamic model.
• Optimize individual swimming techniques based on the case studies modifying arm and trunk movements.
• Develop supplementary tools for guiding swimming training based on the described framework for onshore measurement and assessment.

Strengths

• Validation metrics are provided: Spearman's correlation >0.75, ICC >0.75, and NRMSE <25% for most body segments.
• Data covers three swimming strokes: breaststroke, freestyle, and butterfly.
• Framework integrates measurement (17 IMUs), an onshore trainer, and a dynamic model for performance assessment.

Limitations

• Data is captured on an onshore trainer, which may cause deviations from typical in-water patterns, especially for lower limb and trunk motions.
• Column-level documentation is absent; field semantics must be inferred after download.
• The dataset is 695.6 KB, indicating a limited scope likely focused on summary results or a small sample.

Provenance

Source

figshare

Collection Method

Data captured using seventeen wireless inertial measurement units on an onshore swim trainer, compared with optical motion capture.

Freshness

Last updated 2026-05-07 04:44:12; freshness should be verified.