@pond-ts/fit API Reference
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    Variable MOVING_SPEED_MPSConst

    MOVING_SPEED_MPS: 0.5

    At or above this speed (m/s, ≈ 1.8 km/h) the time between two samples is moving; below it you're stopped or drifting. The default threshold of movingTimeSeconds, and the rule section stats use for their moving numbers.