Smoking behavior and tobacco smoke intake: Response of smokers to shortened cigarettes

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Abstract
The response of 4 cigarette smokers to full-length and 3 different types of half-length cigarettes was examined in a naturalistic laboratory environment. During daily 100-min sessions, subjects smoked ad lib full-length (100 mm) cigarettes, the distal half of cigarettes, the proximal half of cigarettes or the proximal half of previously smoked cigarettes. As a group, subjects smoked 75% more half-length cigarettes than full-length cigarettes. Subjects also puffed at a higher rate (i.e., had shorter interpuff intervals) on half-length than on full-length cigarettes. Mean puff duration (s/puff) was higher when subjects smoked the distal-half cigarettes than when they smoked the proximal-half cigarettes, and subjects spent proportionately more time puffing on the distal-half cigarettes and modifying the way they smoked half-length cigarettes, subjects maintained the same intake of smoke (as measured by expired air CO) during sessions as when they smoked full-length cigarettes. Apparently, smokers make complex adjustments in their smoking behavior in response to changes in cigarette length.