Table 2.

Correlation maxtrix between sleep the night before training, baseline skill performance and cortical excitability

		Al	rMT	aMT	Sleep efficiency	Time asleep	Awakenings	Time awake	Avg. time awake	Sleep latency
Al	Pearson r	1	0.317	0.186	0.234	−0.143	−0.363	−0.382	−0.108	−0.061
	Sig. (2-tailed)		0.185	0.447	0.335	0.548	0.126	0.107	0.66	0.803
	N	20	19	19	19	20	19	19	19	19
RMT	Pearson r	0.317	1	0.885**	−0.013	−0.12	0.169	0	−0.198	−0.258
	Sig. (2-tailed)	0.185		0	0.959	0.625	0.503	0.999	0.431	0.301
	N	19	19	19	18	19	18	18	18	18
AMT	Pearson r	0.186	0.885**	1	−0.018	−0.01	0.137	0.032	−0.152	−0.262
	Sig. (2-tailed)	0.447	0		0.945	0.968	0.587	0.9	0.546	0.295
	N	19	19	19	18	19	18	18	18	18

AI: accuracy index, RMT: resting motor threshold, AMT: active motor threshold.

^**p <0.01.