both paddlers catch at the same time.
Descriptive statistics and datavisualisation were performed in Excel® 2016 (Microsoft Corporation, Redmond, WA, USA). To illustrate stroke synchronisation profiles, stroke-by-stroke offsets at each position were plotted in radar charts. An annotated example of a radar chart showing offsets at the catch is shown in Figure 1 . In the radar chart, data points within the shaded centre represent negative offset, where the back paddler was earlier to reach the stroke position. The white area represents