Table 2.

Correlation between PLIN4 mRNA levels and concentration of intramuscular lipid species. The mRNA expression level of PLIN4 was correlated with the content of different lipid species in biopsies from m. vastus lateralis (n = 26) before, after 12 weeks of training and the change following long-term exercise (after 12 week - before)

	Before 12 week		After 12 week		Delta
	r *	P †	r	P	r	P
Cholesterol Esters	0.07	0.75	0.09	0.68	0.03	0.88
Triacylglycerol	0.21	0.31	0.20	0.33	0.19	0.36
Free fatty acids	0.19	0.37	0.23	0.25	0.25	0.23
Cholesterol	−0.05	0.83	0.26	0.20	0.15	0.48
Total neutral	0.21	0.31	0.20	0.34	0.15	0.49
Phosphatidylethanolamine	0.23	0.26	0.41	0.04	0.38	0.06
Lysophosphatidylethanolamine	0.02	0.91	0.01	0.95	−0.30	0.14
Phosphatidylinositol	0.09	0.72	0.13	0.55	−0.05	0.85
Phosphatidylcholine	0.27	0.19	0.48	0.01	0.37	0.07
Sphingomyelin	0.12	0.56	0.18	0.37	0.08	0.70
Lysophosphatidylcholine	0.13	0.52	0.09	0.66	−0.02	0.94
Total polar	0.21	0.31	0.32	0.11	0.36	0.08
Total lipids	0.32	0.11	0.36	0.07	0.23	0.27

^*The correlations were obtained by using Spearman’s test (r > 0.5)

^†P-value obtained by using Spearman’s test