Table 3.

Vascular data

Variables	Infusion				Group	Infusion	Interaction
Group		Younger	Middle-aged/older higher testosterone	Middle-aged/older lower testosterone
N		20	20	18
Baseline brachial artery diameter, mm	Saline	4.1 ± 0.5	4.7 ± 0.6	5.0 ± 0.5	<0.001	0.253	0.065
	Vit C	4.2 ± 0.5	4.7 ± 0.5	4.9 ± 0.6
Brachial artery diameter change, mm	Saline	0.32 ± 0.06	0.26 ± 0.10	0.19 ± 0.09	<0.001	0.007	0.139
	Vit C	0.32 ± 0.07	0.31 ± 0.10	0.26 ± 0.07
Allometrically scaled FMD, %	Saline	6.8 ± 2.7	5.8 ± 1.8	4.1 ± 2.6	0.003	0.005	0.113
	Vit C	7.4 ± 2.2	7.0 ± 2.0	5.9 ± 2.1
RHI	Saline	1.76 ± 0.48	2.19 ± 0.57	2.14 ± 0.40	0.086	0.480	0.272
	Vit C	1.88 ± 0.51	2.07 ± 0.51	1.97 ± 0.45
lnRHI	Saline	0.53 ± 0.26	0.75 ± 0.25	0.74 ± 0.18	0.052	0.544	0.248
	Vit C	0.60 ± 0.26	0.69 ± 0.26	0.66 ± 0.19

Data examined using 2-way ANOVAs and displayed as mean ± SD.

Abbreviations: FMD, flow-mediated dilation; lnRHI, natural log–transformed reactive hyperemia index; RHI, reactive hyperemia index.