While some variation in boat speed during the stroke is unavoidable it has been shown that minimising this check results in faster race times. So that you can monitor this, the ActiveFlow unit displays a Check Factor which is averaged over two strokes and is calculated from the average boat deceleration during each stroke. This is then adjusted for rate as Check inevitably goes up as the rate increases.
Check values do vary with crew weight and boat type, but as a general guide we see figures of around 35 to 40 for the best crews at race pace increasing to 60 or 70 for less experienced rowers.
Rather than monitoring Check continuously we suggest tracking it over time and using it to assess improvements made due to changes in technique - you will find that reducing Check in a given crew leads to substantially improved boat speeds.
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