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Published on: May 24, 2017
Preliminary Evaluation of Short-Term Abstinence Effects Among Never-Smoking Experienced Users of Modern Electronic
Nicholas J Felicione1, Ashley E Douglas2, F Joseph McClernon3
1Department of Health Behavior, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA.
Introduction:
ECIG use has increased among non-smokers, with the potential negative consequence of developing nicotine dependence. ECIG users report withdrawal symptoms upon abstinence, though the significance of these symptoms has been questioned. This preliminary study aimed to characterize the early timecourse of ECIG withdrawal under forced abstinence.
Methods:
Fifteen never-smoking ECIG users completed two conditions whereby participants either abstained from ECIG use (abstinence) or used their own ECIG (ad lib) for 3 h. Puff topography in this latter condition was measured via video observation. Outcome measures included heart rate, subjective ratings of withdrawal, cognitive performance, and choice behavior.
Results:
Heart rate was lower during abstinence compared to ad lib use (F = 12.60, p < .01, ƞp2 = 0.47). Higher levels of craving (F = 4.98, p < .05, ƞp2 = 0.26) and lower levels of nicotine effects (e.g., dizzy, F = 4.62, p < .05, ƞp2 = 0.36) were reported during abstinence compared to ad lib use. Interaction effects were observed for both factors of the Questionnaire of Smoking Urges: Brief (Fs > 3.56, ps < .05, ƞp2s = 0.21-0.27), with factor scores increasing from baseline to 90 min in the abstinent condition only. Inhibitory control was impaired at 120 min in the abstinent condition only (F = 7.51, p < .05, ƞp2 = 0.50).
Conclusions:
Never-smoking ECIG users experienced aversive withdrawal symptoms within 2-3 h of abstinence. Future work should include other control conditions, such as placebo ECIGs or nicotine replacement therapy, and biomarkers of nicotine exposure, as well as examine withdrawal as a function of device type.
Implications:
Never-smoking ECIG users experience some aversive nicotine withdrawal symptoms within two to three hours of abstinence. Relative to ad lib ECIG use, abstinence decreased heart rate and inhibitory control, as well as increased subjective ratings of withdrawal such as craving and intention to vape. Those same symptoms might be suppressed by self-administration of ECIGs. Experiencing withdrawal upon abstinence may indicate that ECIGs can cause dependence without a history of other tobacco use.
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