Table 4.

Relationship of the tertile of skin autofluorescence (AF) with log-transformed OSI among adult Japanese men

	Tertiles of skin AF
Range (unit, AU)	Low	Middle	High
	(1.28–1.82)	(1.82–2.05)	(2.05–2.88)
Number of participants	65	64	64
Crude	2.83 (2.76–2.90)	2.78 (2.71–2.85)	2.68 (2.61–2.74)*
Adjusteda	2.81 (2.75–2.87)	2.81 (2.74–2.87)	2.66(2.61–2.73)*,**

Data are geometric means (95% confidence interval). Unit of leg extension power is watts per kilogram

Analysis of variance or analysis of covariance

^* P < 0.01; significantly different from lowest skin autofluorescence tertile (Bonferroni correction)

^** P < 0.01; significantly different from middle skin autofluorescence tertile (Bonferroni correction)

^aAdjusted for age, body mass index, calcium intake, physical activity level, smoking status, education level, and metabolic syndrome