Table 4.

Correlations between selected variables of interest.

Association tested	Pearson r value	p =	95% CI	r2
Age and bedtime	0.358	<0.0001*	0.229:0.474	0.128
Age and sleep duration	-0.296	<0.0001*	-0.4192:-0.1631	0.087
Age and global PSQI score	0.204	0.0040*	0.066:0.335	0.041
Age and ideal bedtime	0.227	0.0021*	0.084:0.361	0.052
Age and ideal sleep duration	-0.023	0.7568	-0.169:0.123	<0.001
Age and ideal sleep minus actual sleep duration	-0.191	0.0100*	-0.329:-0.046	0.037
Sleep duration and bedtime	-0.427	<0.0001*	-0.535:-0.305	0.183
Sleep duration and wake time	0.488	<0.0001*	0.374:0.588	0.238
Sleep duration and ideal sleep duration	-0.1105	0.1398	-0.2527:0.03640	0.012
Training duration and ideal sleep duration	0.2225	0.0032*	0.0763:0.3594	0.050