Table 1.

The confusion matrix (n, %) for the gears employed during XC ski skating as identified by video analysis versus the smartphone application (mean value, n = 11).

Video Analysis	Smartphone Analysis
	G2L	G2R	G3	G4L	G4R
G2L	28 (96%)	3 (7%)	1 (3%)	2 (3%)	1 (0%)
G2R	1 (2%)	23 (90%)	2 (4%)	1 (2%)	0 (0%)
G3	1 (1%)	1 (1%)	25 (81%)	3 (6%)	2 (4%)
G4L	4 (1%)	0 (0%)	2 (4%)	23 (88%)	2 (2%)
G4R	1 (0%)	3 (2%)	3 (8%)	2 (2%)	25 (94%)

G, gear; L, left; R, right.