Takeshi Saito, et al. Relationship Between Cigarette Smoking and Muscle Strength in Japanese Men. J Prev Med Public Health. 2012 Nov;45(6):381-386
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http://synapse.koreamed.org/search.php?where=aview&id=10.3961/jpmph.2012.45.6.381&code=0056JPMPH&vmode=FULL
対象は日本人男性4249人、平均年齢43.3歳で、喫煙はブリンクマン指数、筋力は握力と下肢筋力を評価しています。結果ですが、38.1%が喫煙していて、34.9%が定期的に運動していました。年齢での補正後でもブリンクマン指数400以上の場合、筋力が有意に低かったです。
年齢、身長、体重、運動習慣で調整後も、ブリンクマン指数400以上の喫煙者は握力が有意に低かったです。一方、下肢筋力は統計学的有意差を認めませんでした。以上より、喫煙と筋力（特に握力）は負の相関を認めるかもしれないという結論です。
交絡因子の評価と調整が十分とはいえない気もしますが、喫煙と筋力に負の相関を認めるという結果には意味があると思います。喫煙者にはサルコペニアが多いという報告もありますので、サルコペニア予防には禁煙したほうがよいと考えます。
Abstract
Objectives
To investigate the link between cigarette smoking and muscle strength in
Japanese men.
Methods
We used data on 4249 Japanese men, aged 43.3±13.9 years, in this
cross-sectional investigation study. Grip strength and leg strength were
measured as indicators of overall muscle strength. Meanwhile, subjects'
cigarette smoking habits were recorded by trained medical staff. The effect of
cigarette smoking on muscle strength was evaluated.
Results
A total of 1618 men (38.1%) were smokers and 1481 men (34.9%) exercised
regularly. Significant differences in muscle strength were noted between men
with and without a Brinkman index of 400 or greater, after adjusting for age.
After adjusting for age, height, body weight and exercise habits, associations
between the Brinkman index and leg strength and the ratio of leg strength to
body weight were attenuated.
Conclusions
Cigarette smoking might be negatively associated with muscle strength,
especially grip strength in Japanese men.
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