Table 2. RMSE results.

		LPS		GPS		VID		ANOVA
		Median	±SD	Median	±SD	Median	±SD	p	ES	Sign. diff. groups
dRMSE (m)	Sport-specific course (SSC)	0.27	0.05	0.88	0.22	0.57	0.09	***	large	ALL
	Shuttle run (SHU)	0.22	0.13	1.33	0.54	0.59	0.28	***	large	ALL
	Small-sided game (SSG)	0.23	0.05	0.81	0.41	0.56	0.12	***	large	ALL
vRMSE (m⋅s-1)	Sport-specific course (SSC)	0.35	0.06	0.32	0.01	0.41	0.07	**	large	GPS&VID / LPS&VID
	Shuttle run (SHU)	0.31	0.04	0.39	0.08	0.52	0.08	***	large	GPS&VID / LPS&VID
	Small-sided game (SSG)	0.36	0.06	0.39	0.06	0.47	0.08	***	large	GPS&VID / LPS&VID
	Standing (pooled)	0.34	0.17	0.18	0.20	0.23	0.26	***	medium	GPS&LPS / VID&LPS
	Low speed (pooled)	0.26	0.07	0.26	0.13	0.33	0.12	***	medium	GPS&VID / LPS&VID
	Moderate speed (pooled)	0.25	0.07	0.27	0.07	0.43	0.10	***	large	GPS&VID / LPS&VID
	Elevated speed (pooled)	0.34	0.12	0.37	0.19	0.49	0.24	***	small	GPS&VID / LPS&VID
	High speed (pooled)	0.39	0.13	0.37	0.25	0.50	0.30
	Very high speed (pooled)	0.37	0.12	0.39	0.13	0.61	0.43	*	medium	GPS&VID / LPS&VID
aRMSE (m⋅s-2)	Sport-specific course (SSC)	0.69	0.16	1.18	0.14	0.78	0.16	***	large	GPS&LPS / GPS&VID
	Shuttle run (SHU)	0.58	0.10	0.56	0.17	0.80	0.15	***	large	GPS&VID / LPS&VID
	Small-sided game (SSG)	0.69	0.13	0.69	0.14	0.97	0.19	***	large	GPS&VID / LPS&VID

Presented as median ± standard deviation (SD). Inter-system differences in accuracy levels were tested using repeated-measures one-way analysis of variance (ANOVA). p values are presented as * (p ≤ 0.05), ** (p ≤ 0.01) and *** (p ≤ 0.001). η² effect sizes (ES) for the analysis of variance were classified as small (0.02–0.12), medium (0.13–0.25) and large (>0.26). Homogeneous subsets are listed if Bonferroni’s post hoc analysis did not result in significant difference between individual groups. GPS = Global Positioning System; LPS = Local Positioning System, VID = video system; dRMSE = distance root mean square error; vRMSE = velocity root mean square error; aRMSE = acceleration root mean square error.