Body fatness and smoking history predict the thermic effect of smoking in fasted men
Walker, J.F.; Collins, L.C.; Vogel, R.L.; Stamford, B.A.
International Journal of Obesity and Related Metabolic Disorders Journal of the International Association for the Study of Obesity 17(4): 205-208
1993
ISSN/ISBN: 0307-0565 PMID: 8387969 Document Number: 416636
Epidemiological studies suggest that body composition and smoking history are related to degree of weight gain following smoking cessation. We hypothesized that body composition and smoking history affect the thermic effect of smoking (TES), which in turn would influence weight gain. Forty males ranging in age from 20 to 70 years smoked two cigarettes (0.8 mg nicotine yield) in 20 minutes, after which resting energy expenditure (REE) were measured during the next hour. The average change in REE (DELTA-REE) was 4.97% (P lt 0.0001), with a range of -2% to +14%. DELTA-REE was greater than 1% in 35 subjects, less than 1% in three subjects, and reduced in two subjects. Body fatness was negatively correlated with DELTA-REE (r = - 0.68, r-2 = 0.46). Multiple regression analysis indicated that body fatness (%) and pack-year history of smoking strongly predict DELTA-REE (R = 0.82, R-2 = 0.68, DELTA-REE = 11.090 - 0.296 times %FAT - 0.037 times pack-year). It was concluded that body fatness and smoking history subsequently influence the thermic effect of smoking. In addition, this finding helps explain the wide range in TES which has been reported among subjects in many previous studies.