Records
Keep each observation tied to its source, timestamp, device or platform context, and processing history.
Evidence standards
Source-linked wearable mobility evidence
Public vocabulary for records, labels, surrogate labels, duplicates, baselines, limits, source quality, missing data, and review boundaries.
What evidence standards should preserve
Wearable mobility evidence should be reviewed as source-linked records, not as unbounded conclusions. A useful record identifies where the data came from, what label was applied, how duplicates were handled, what baseline was used, and what uncertainty remains.
Labels
State whether a label is observed, user-reported, clinician-provided, platform-generated, or inferred from review.
Surrogate labels
Use surrogate labels only when the proxy is disclosed and the limits of the proxy are preserved.
Duplicates
Identify duplicate records, overlapping exports, repeated routes, and derived copies before drawing conclusions.
Baselines
Compare mobility evidence to a defined baseline, such as ordinary walking, device-assisted movement, or a prior functional period.
Limits and boundaries
Document missing data, noisy measurements, device limits, alternative explanations, and review boundaries.
What Each Metric Can Say
HR can support cardiovascular load context. RMSSD can support autonomic recovery or regulation context when quality and activity context are known. Duration can support tolerated exposure time. Distance can support functional mobility achieved. HR per mile and distance per mean HR can support physiologic efficiency comparisons in matched contexts.
ACC can support mechanical motion exposure at the sensor. Jerk can support rate of change in acceleration. Shock spike rate can support frequency of high motion events. Cumulative dynamic shock can support accumulated mechanical exposure across an activity or ride.
No single metric is a medical determination, and no universal burden score should be used without defined normalization. Impact shock index remains components only unless a normalization baseline is defined.
Standards use
These standards help reviewers distinguish a source-linked evidence record from advocacy summary, marketing copy, medical conclusion, or legal conclusion. They support safer review by preserving the difference between data, interpretation, accommodation need, and setting-specific risk.