Exhaled nitric oxide: the effects of age, gender and body size.
Since little is known of the effects of age, gender, and body size on exhaled nitric oxide (NO) production, we have conducted a prospective study to examine these factors in a healthy nonsmoking women (mean age +/- SD 47.7 +/- 15.8, range 20-79 years). Exhaled NO was measured by an automatic chemiluminescence analyzer (Sievers NO Analyser 280) at steady expiration. Men had significantly higher exhaled NO levels than women (p = 0.001). Although exhaled NO levels did not correlate with age (r = 0.12, p = 0.17), it correlated significantly with height (r = 0.23, p = 0.02), weight (r = 0.34, p
Tsang
K W
KW
University Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, China.
Ip
S K
SK
Leung
R
R
Tipoe
G L
GL
Chan
S L
SL
Shum
I H
IH
Ip
M S
MS
Yan
C
C
Fung
P C
PC
Chan-Yeung
M
M
Lam
W
W
D000328:Adult; D000368:Aged; D000375:Aging / Q000378:metabolism*; D001824:Body Constitution; D015992:Body Mass Index; D001830:Body Surface Area; D001944:Breath Tests / Q000295:instrumentation; D005260:Female; D006801:Humans; D008163:Luminescent Measurements; D008297:Male; D008875:Middle Aged; D009569:Nitric Oxide / Q000032:analysis*; D011446:Prospective Studies; D012016:Reference Values; D012727:Sex Characteristics
D009569:Nitric Oxide