Anatomy & Physiology: Current Research
Open Access
ISSN: 2161-0940
+44 1300 500008
ISSN: 2161-0940
+44 1300 500008
Kazuhiro Yamaguchi
8-1 Kawata-cho, Shinjuku-ku, Tokyo 162-8666
Japan
Research Article
Novel Regression Equations Incorporating Aging-specific Contributions of Various Explanatory Variables in Predicting Spirometric Parameters in Non-Obese, Japanese Adults
Author(s): Kazuhiro Yamaguchi, Hisamitsu Omori, Ayumi Onoue, Takahiko Katoh, Yasuhiro Ogata, Naoki Miyao, Takao Tsuji and Kazutetsu AoshibaKazuhiro Yamaguchi, Hisamitsu Omori, Ayumi Onoue, Takahiko Katoh, Yasuhiro Ogata, Naoki Miyao, Takao Tsuji and Kazutetsu Aoshiba
Aim: To develop the novel regression equations that predict spirometric parameters (SPs) in concert with aging-specific corrections for four explanatory variables, including age, height, body weight, and fat fraction of body mass. Subjects: A large cohort of nonsmoking, non-obese, healthy adults in the general population in Japan (males: 3,056, females: 6,783). Methods: Supposing that SP is described by an aging-dependent, logarithmic, additive function of age, height, body weight, and fat fraction of body mass, gender- and aging-specific regression equations predicting the forced vital capacity (FVC), forced expiratory volume after one second (FEV1), FEV1/FVC, peak expiratory flow rate (PEF), forced expiratory flow rate at 50% expiration of the FVC (FEF50), and forced expiratory flow rate at 75% expiration of the FVC (FEF75) were established. The partial regression coefficients of ex.. View More»
DOI:
10.4172/2161-0940.1000288