TABLE 3.

Correlations between predictors of change in skin color.

	L* change	a* change	b* change	VO2 change	Fat change	F and V change	Stress change	SIC change	Sleep change
a* (red) change	−0.57**
b* (yellow) change	–0.16	0.07
VO2 max change	0.19	–0.23	0.06
Fat% change	0.07	0.01	–0.21	0.06
Fruit and veg. change	–0.09	0.02	0.30*	0.00	0.13
Stress change	0.09	0.02	−0.29*	0.20	0.20	–0.19
SIC (illness) change	0.21	–0.16	–0.11	–0.03	−0.33*	–0.17	–0.12
Sleep change	–0.03	–0.02	0.18	0.01	0.12	–0.03	0.34*	0.12
Supplements change	0.21	–0.12	–0.01	0.04	–0.01	0.02	0.16	0.21	0.30*

Skin lightness (L*), redness (a*), and yellowness (b*). Statistically significant relationships are in bold (**P < 0.005, *P < 0.05, two-tailed probabilities). Supplements are coded as stopped taking supplements = −1, no change = 0, started taking supplements = 1, F and V = Fruit and vegetables.