The Effect of Cigarette Smoking / Smoking Cessation on Skeletal Muscle

Status Completed

Clinical Trial Summary

Tobacco smoke is probably the single most significant source of toxic chemicals that humans are exposed to. Smoking is associated with a variety of pathological conditions such as cardiovascular and pulmonary diseases. In addition to the known harmful effects of cigarette smoking, several epidemiological studies identified tobacco use as a risk factor for sarcopenia, the loss of skeletal muscle mass and strength with advancing age. Previous studies examined skeletal muscles of smokers in comparison with muscles of non-smokers and found structural and metabolic damage in muscles of smokers.

Quitting of smoking is known to be associated with weight gain. A previous study examined the effects of smoking cessation on body composition of post-menopausal women using dual-energy x-ray absorptiometry (DEXA). It was found that women who successfully quit smoking for a period of 16 months have significantly increased their body weight, fat mass, muscle mass and functional muscle mass in comparison with non-quitters women. For the first time, it was shown that smoking cessation is associated with an increase of functional muscle mass. Yet, the effects of quitting of smoking on muscle mass and muscle functional capabilities of younger subjects remain unclear. Therefore, we aim to investigate the effects of smoking cessation on muscle mass, muscle function and strength in heavy smoker's subjects. Our findings may shed light on the beneficial effects of smoking cessation regarding the status and function of skeletal muscle in heavy smokers and as a possible strategy to prevent or delay the progression of sarcopenia.

Research hypothesis: Smoking cessation among adult heavy smokers will lead to increase in skeletal muscle mass and improvement of muscle function and strength compared with continued smokers.

Clinical Trial Description

Body composition and muscle function were assessed at the beginning of a smoking cessation program and again after 12 months. Changes in body composition and muscle function were compared between continued smokers and quitters. ;

Study Design

Time Perspective: Prospective

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT02128048
Study type	Observational
Source	Rambam Health Care Campus
Contact
Status	Completed
Phase	N/A
Start date	June 2012
Completion date	February 2014

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See also
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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

The Effect of Cigarette Smoking / Smoking Cessation on Skeletal Muscle Mass, Strength and Functional Capabilities

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms