Table 2.

Descriptive statistics of the intervals obtained from the James One and Polar H10 at rest and during the SCWT.

	Nº. of Intervals	Min. (ms)	Max. (ms)	Mean (ms)	SD (ms)	Skewness	Kurtosis	CV (%)
James One—Rest	6976	555	1180	770	94	0.34	−0.33	12.2
Polar H10—Rest	6976	563	1180	774	93	0.34	−0.31	12.0
James One—SCWT	7320	536	1012	732	88	0.042	−0.81	12.1
Polar H10—SCWT	7320	547	1013	736	88	0.039	−0.82	11.9