. 2013 May 10;4:99. doi: 10.3389/fphys.2013.00099

Table 3.

Correlations coeffients between plasma catecholamines, serum concentrations and substrates oxidation during walking and running in both cold and neutral environmental conditions.

	Epi	NE	Glucose	NEFA	Glycerol	BHB	CHO_oxi	Fat_oxi
WALKING
Epi		−0.033	−0.010	+0.180	+0.149	+0.383	+0.286	+0.137
NE	+0.197		+0.079	+0.294	+0.399	−0.003	+0.299	+0.436
Glucose	+0.180	+0.206		+0.008	+0.138	+0.264	+0.042	+0.326
NEFA	+0.256	+0.251	+0.068		+0.856^*	+0.425	+0.485	+0.638^*
Glycerol	+0.333	+0.568^*	+0.086	+0.892^*		+0.468	+0.581	+0.722^*
BHB	+0.533^*	+0.085	+0.131	+0.493	+0.343		+0.335	+0.445
CHO_oxi	+0.301	+0.736^*	+0.053	+0.487	+0.766^*	+0.379		+0.773^*
Fat_oxi	+0.155	+0.620^*	+0.097	+0.695^*	+0.836^*	+0.212	+0.747^*
RUNNING
Epi		+0.305	−0.111	+0.158	+0.392	+0.054	+0.476	+0.293
NE	+0.444		+0.196	+0.007	+0.440	−0.141	+0.698^*	+0.496
Glucose	+0.165	+0.532^*		−0.068	+0.021	−0.312	+0.232	+0.217
NEFA	+0.387	+0.428	+0.258		+0.746^*	+0.843^*	+0.256	+0.586^*
Glycerol	+0.447	+0.617^*	+0.371	+0.780^*		+0.645^*	+0.604^*	+0.761^*
BHB	+0.208	−0.003	−0.153	+0.687^*	+0.489		+0.101	+0.492
CHO_oxi	+0.591^*	+0.794^*	+0.542^*	+0.486	+0.609^*	−0.005		+0.530^*
Fat_oxi	+0.241	+0.528^*	+0.211	+0.653^*	+0.677^*	+0.391	+0.400

Upper and lower sections represent Cold and Neutral trials respectively for both Walking and Running. Epi, Epinephrine; NE, Norepinephrine; glucose; NEFA; non-esterified fatty acids; glycerol; BHB, beta-hydroxybutyrate; CHO_oxi (carbohydrate oxidation), and fat_oxi (fat oxidation).

Significantly correlated at p < 0.01.