Table 1.

Mean values (M) and SD for the heart rate (HR), the root mean square of successive differences (RMSSD), low frequency power (LF), high frequency power (HF), and the LF/HF ratio for both groups during pre- and post-test.

	Fish group			Control group
	M	SD	n	M	SD	n
Pre-test
Baseline HR	72.96	13.15	27	72.81	13.13	22
Baseline RMSSD	1.44	0.28	27	1.45	0.27	22
Baseline LF	3.02	0.40	27	2.90	0.40	22
Baseline HF	2.22	0.59	27	2.29	0.49	22
Baseline LF/HF	0.82	0.33	27	0.64	0.26	22
EF tasks HR	71.48	13.06	27	70.12	11.82	22
EF tasks RMSSD	7.23	0.34	26	7.05	3.87	22
EF tasks LF	2.82	0.59	26	2.86	0.37	22
EF tasks HF	2.14	0.75	26	2.36	0.46	22
EF tasks LF/HF	0.69	0.27	26	0.53	0.22	22
Recovery HR	70.47	12.08	26	69.71	12.14	22
Recovery RMSSD	1.62	0.31	27	1.63	0.27	22
Recovery LF	3.30	0.43	27	3.32	0.39	22
Recovery HF	2.61	0.61	27	2.69	0.46	22
Recovery LF/HF	0.79	0.41	27	0.72	0.28	22
Post-test
Baseline HR	71.08	12.50	22	76.11	9.87	16
Baseline RMSSD	1.56	0.28	22	1.47	0.32	16
Baseline LF	3.11	0.40	22	2.99	0.59	16
Baseline HF	2.39	0.54	22	2.36	0.54	16
Baseline LF/HF	0.78	0.40	22	0.68	0.17	16
EF tasks HR	70.37	11.33	22	73.96	11.08	16
EF tasks RMSSD	1.54	0.36	22	1.52	0.26	16
EF tasks LF	2.92	0.47	22	2.81	0.49	16
EF tasks HF	2.37	0.70	22	2.38	0.49	16
EF tasks LF/HF	0.57	0.30	22	0.47	0.28	16
Recovery HR	69.75	9.98	22	75.17	10.81	16
Recovery RMSSD	1.63	0.30	22	1.49	0.23	16
Recovery LF	3.26	0.38	22	2.97	0.44	16
Recovery HF	2.61	0.62	22	2.44	0.40	16
Recovery LF/HF	0.73	0.33	22	0.60	0.27	16

The HRV data are log-transformed. The number of participants in each group is in the column n.