Drive
The phase of the stroke where the oars are in the water, moving towards the bow. Oar angle increases during the drive, becoming more positive.
Recovery
The phase of the stroke where the oars are out of the water, moving towards the stern. Oar angle decreases during the recovery, becoming more negative.
Stroke Rate
Average number of strokes taken per minute; measured by strokes per minute (SPM).
Catch Angle
The angle of the oarlock when the motion of the oar changes from Recovery to Drive; measured in degrees.
Release Angle
The angle of the oarlock when the motion of the oar changes from Drive to Recovery; measured in degrees.
Length
The angle the oarlock rotates between the Catch and Release.
Slip
The angle the oarlock rotates between the Catch Angle and the Slip Threshold. Used to quantify the angle required to connect the oar with the water.
Wash
The angle the oarlock rotates between the Wash Threshold and the Release Angle. Used to quantify the angle required to release the oar from the water.
Effective Length
The angle the oarlock rotates while the oar is connected to the water (i.e., Length less Slip and Wash). Used to quantify the angle where the oar is propelling the boat most effectively.
Work
Amount of energy exerted each stroke; measured in Joules (J).
Work is proportional to Force and Length, and can be improved by taking longer, more forceful strokes.
Power
Rate of energy production; measured in watts (1 watt = 1 joule per second).
Power can be improved by increasing Work per stroke or increasing the Stroke Rate.
Peak Force
The largest force applied during the drive (i.e., the peak of the curve); measured in Newtons (N).
Peak Angle
The angle in the stroke where the Peak Force occurs (i.e., the peak of the curve).
Slip / Wash Threshold
The threshold defining the Slip and Wash angle. Default values are 100N for Sculling and 200N for Sweep. To adjust: Settings > Data > Slip & Wash Threshold.
Drive Time
Amount of Time between the Catch Angle and Release Angle; measured in seconds.
Recovery Time
Amount of Time between the Release Angle and Catch Angle; measured in seconds.
Check
Amount of Time while approaching the catch during which the boat speed is decreasing; measured in milliseconds.
Interval
A segment of a session during which rowing metrics are accumulated and averaged. XBoat automatically detects intervals or allows you to define a workout progression (i.e. 5x500m = 5 intervals).
Distance
Total distance rowed during an interval; measured in meters (m).
Time
Total time elapsed during an interval; measured in minutes and seconds.
Split
The Time required to travel 500m at the current speed.