The impact of masticatory ability as evaluated by salivary flow rates on obesity in japanese: The Toon health study. (9th May 2015)

• Record Type: Journal Article
• Authors: Maruyama, Koutatsu; Nishioka, Shinji; Miyoshi, Noriko; Higuchi, Kana; Mori, Hiromi; Tanno, Sakurako; Tomooka, Kiyohide; Eguchi, Eri; Furukawa, Shinya; Saito, Isao; Sakurai, Susumu; Nishida, Wataru; Osawa, Haruhiko; Tanigawa, Takeshi
• Is Part Of: Obesity. Volume 23:Number 6(2015:Jun.)
• Page Start: 1296
• Page End: 1302
• Publication Date: 2015-05-09
• Subjects: Obesity -- Periodicals; 616.398005
• DOI: 10.1002/oby.21071
• Languages: English
• ISSNs: 1930-7381

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="oby21071-sec-0001" sec-type="section"> <title>Objective</title> <p>This study examined the associations of masticatory ability evaluated by chewing‐gum‐stimulated salivary flow rate with anthropometric indices among a general Japanese population.</p> </sec> <sec id="oby21071-sec-0002" sec-type="section"> <title>Methods</title> <p>In total, 921 Japanese men and women aged 30–79 years participated in this cross‐sectional study. Saliva production was stimulated by 5 min of gum chewing, then collected; salivary flow rate was calculated as g/min. Overweight, abdominal obesity in terms of waist circumference (WC), and waist–hip ratio (WHR), and elevated skinfold thickness statuses were determined.</p> </sec> <sec id="oby21071-sec-0003" sec-type="section"> <title>Results</title> <p>The multivariable odds ratio and 95% confidence intervals of overweight, abdominal obesity (WC, WHR), and elevated skinfold thickness status for highest vs. lowest quartile of salivary flow rate were 0.59 (0.37‐0.95, <italic>P</italic> for trend = 0.02), 0.65 (0.43‐0.98, <italic>P</italic> = 0.03), 0.54 (0.35‐0.83, <italic>P</italic> < 0.01), and 0.61 (0.39‐0.96, <italic>P</italic> < 0.01), respectively. The linear trends of multivariable‐adjusted means of BMI, WC, WHR, and skinfold thickness according to quartiles of salivary flow rate did not vary after stratification by overweight status.</p> </sec> <sec id="oby21071-sec-0004" sec-type="section"> <title>Conclusions</title> <p>Higher stimulated salivary flow rate, a surrogate marker for mastication ability, was associated with lower prevalence of overweight, abdominal obesity (whether WC‐ or WHR‐defined), and elevated skinfold thickness among the general Japanese population.</p> </sec> </abstract>