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Purpose <p>This study aimed to investigate the relationship between smoking status and muscle quality considering physical activity (PA).</p> Methods <p>We conducted a cross-sectional study as a part of the Iwaki Health Promotion Project in 2018. A total of 1003 participants were classified into six groups according to smoking status (never, former, or current smoker) and PA(with or without PA)-Never smokers with PA (<i>n</i> = 185) / without PA (<i>n</i> = 448), Former smokers with PA (<i>n</i> = 61) / without PA (<i>n</i> = 143), Current smokers with PA (<i>n</i> = 36) / without PA (<i>n</i> = 130). Muscle quality was evaluated using the bioelectric phase angle (PhA) measured by the impedance method. Smoking amount and duration were converted to pack year, and information about lifestyle habits, such as sleep time, alcohol drinking, and energy intake, were also collected. Univariate analysis was performed between PA and without PA groups in three different smoking statuses, and the correlation between PhA and pack year was investigated in each of the six groups. Multiple linear regression analysis for PhA of former and current smokers was performed to examine factors affecting PhA in smokers.</p> Results <p>The phase angle in former and current smokers without PA was lower than that with PA (<i>p</i> &lt; 0.05). A negative correlation was suggested between packyear and PhA for current smokers without PA (<i>r</i> = -0.168; <i>p</i> = 0.057). Lifestyle factors influencing PhA were energy intake (<i>β</i> = 0.0003) and PA (<i>β</i> = 0.2525) in former and current smokers.</p> Conclusion <p>This study showed that former and current smokers with PA have better muscle quality than those without excercise and/or sports. PA. This study indicates smoking amounts to date adversely affect muscle quality for current smokers without PA, but PA could improve muscle quality in current smokers. Energy intake was also one of the important factors in maintaining muscle quality in former and current smokers. This study demonstrates the importance of exercise in preventing the deterioration of muscle quality in smokers.</p>

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Muscle quality is influenced by physical activity in former and current smokers: The Iwaki Health Promotion Project in Japan

  • 期刊论文

  • 发表日期：

    2025年3月7日

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  • Tsukasa Tanaka,
  • Kaori Sawada,
  • Shintaro Yokoyama,
  • Sunao Tanaka,
  • Koichi Murashita,
  • Hidefumi Kamitani,
  • Yuichi Hirakawa,
  • Shinji Fukui,
  • Shigeyuki Nakaji,
  • Tatsuya Mikami

摘要

Purpose

This study aimed to investigate the relationship between smoking status and muscle quality considering physical activity (PA).

Methods

We conducted a cross-sectional study as a part of the Iwaki Health Promotion Project in 2018. A total of 1003 participants were classified into six groups according to smoking status (never, former, or current smoker) and PA(with or without PA)-Never smokers with PA (n = 185) / without PA (n = 448), Former smokers with PA (n = 61) / without PA (n = 143), Current smokers with PA (n = 36) / without PA (n = 130). Muscle quality was evaluated using the bioelectric phase angle (PhA) measured by the impedance method. Smoking amount and duration were converted to pack year, and information about lifestyle habits, such as sleep time, alcohol drinking, and energy intake, were also collected. Univariate analysis was performed between PA and without PA groups in three different smoking statuses, and the correlation between PhA and pack year was investigated in each of the six groups. Multiple linear regression analysis for PhA of former and current smokers was performed to examine factors affecting PhA in smokers.

Results

The phase angle in former and current smokers without PA was lower than that with PA (p < 0.05). A negative correlation was suggested between packyear and PhA for current smokers without PA (r = -0.168; p = 0.057). Lifestyle factors influencing PhA were energy intake (β = 0.0003) and PA (β = 0.2525) in former and current smokers.

Conclusion

This study showed that former and current smokers with PA have better muscle quality than those without excercise and/or sports. PA. This study indicates smoking amounts to date adversely affect muscle quality for current smokers without PA, but PA could improve muscle quality in current smokers. Energy intake was also one of the important factors in maintaining muscle quality in former and current smokers. This study demonstrates the importance of exercise in preventing the deterioration of muscle quality in smokers.