Table 1.

Linear regression models of peak fatty acid oxidation rate (PFO) measured during fasted, incremental cycling, mean fatty acid oxidation rate during the first 30 min of prolonged, fed-state cycling (early FO), and mean fatty acid oxidation rate during 90–120 min of prolonged, fed-state cycling (late FO)

Outcome	Number of observationsa	Adjusted R2	Input variable	Standardised coefficient
PFO	12	0.87	CD36	0.39 95% CI [0.10, 0.68]
			FATP1	0.28 95% CI [−0.13, 0.69]
			FATP4	0.34 95% CI [−0.09, 0.77]
			FABPpm	0.21 95% CI [−0.13, 0.55]
Early FO	17	0.61	FATP1	0.42 95% CI [−0.12, 0.95]
			FATP4	0.39 95% CI [−0.13, 0.91]
			EE	0.21 95% CI [−0.15, 0.56]
Late FO	13	0.65	CD36	−0.42 95% CI [−1.06, 0.22]
			FATP1	0.34 95% CI [−0.41, 1.09]
			FATP4	0.53 95% CI [−0.11, 1.16]
			CPT1	−0.15 95% CI [−0.68, 0.39]
			EE	0.71 95% CI [0.08, 1.33]

^aNumber of observations per model varies due to missing values for some markers. Abbreviations: CD36, cluster of differentiation 36/SR-B3 (previously SR-B2); CPT1, carnitine palmitoyltransferase 1; CPT2, carnitine palmitoyltransferase 2; EE, energy expenditure; FABPpm, fatty acid binding protein plasma membrane; FATP1, fatty acid transport protein 1; FATP4, fatty acid transport protein 4. For each model, only the variables retained in the stepwise selection process are included and shown. Adjusted R² shows the fit of each model to the data; the standardised coefficient allows comparisons to be made between input variables using the same units