# Study 000H Results

## Primary Answer

The strongest supported envelope-support factors are:

- high local running-share embedding
- dense stabilized-context continuity

Longer bout structure is a plausible secondary factor, but the current data does not isolate it as cleanly as embedding support.

## Key Contrast

- October 2025 cadence-protected outside-envelope cluster:
  - mean running-share context: `5.13%`
  - mean treadmill neighbors in 21 days: `1.75`
  - mean distance: `2.09 miles`
  - mean HR residual burden: `13.88 bpm`

- April 2026 cadence-protected boundary probe:
  - running-share context: `91.08%`
  - treadmill neighbors in 21 days: `32.0`
  - distance: `5.45 miles`
  - HR residual burden: `0.69 bpm`

## Interpretation

`000H` does not weaken `000G`. It strengthens it. `000G` showed that cadence protection was real but insufficient. `000H` shows what seems to help that protection remain low-burden: dense local envelope support.