Glossary: Step Speed Loss

Step Speed Loss (SSL) is a running gait metric that measures how much you slow down when your foot hits the ground and is specifically defined as the difference between your forward speed when you first hit the ground and your minimum forward speed during that step's stance phase. SSL is measured at the chest using a heart rate monitor in units of cm/s, and the lower the figure, the better.

See also

• Ground contact time

References

1. Step Speed Loss, garmin.com
2. What is Garmin's metric "Step Speed Loss"?, the5krunner.com

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