TY - JOUR
T1 - Spousal resemblance and risk of 7-year increases in obesity and central adiposity in the Canadian population
AU - Katzmarzyk, Peter T.
AU - Pemsse, Louis
AU - Rao, D. C.
AU - Bouchard, Claude
PY - 1999
Y1 - 1999
N2 - Objective: Spousal similarities in 7-year changes in obesity and obesity-related phenotypes were examined in a sub-sample of 376 pairs of spouses from a sample of 1487 participants in the 1988 Campbell's Survey follow-up of the 1981 Canada Fitness Survey. Measures: Indicators of body fatness included the body mass index (BMI), the sum of five skinfolds (SF5), and waist circumference (WAIST), whereas those for relative adipose tissue (AT) distribution included the ratio of two trunk to three extremity skinfolds, adjusted for SF5 (TERadj), and WAIST adjusted for BMI (WAISTadj). Results: Spouse correlations were 0.17, 0.17, and 0.17 for the BMI (p<0.05) and 0.20,0.20, and 0.21 for SF5 (p<0.05) for the initial measurement, follow-up, and 7-year change, respectively. Spouse correlations for WAIST were some-what lower: 0.16 (p<0.05), 0.11 (p<0.05), and 0.11 (p<0.05) for the initial measurement, follow-up, and 7-year change, respectively, whereas those for TERadj and WAISTadj were low and not significant. Spouses of probands who had increases in adiposity and central AT distribution had elevated risks of also increasing in these parameters. Spousal risks (risk ratios) were 1.48 (95% CI = 1.08-2.03), 1.49 (95% CI =1.10-2.02), and 1.68 (95% CI= 1.28-2.21) for increases in BMI, SF5, and WAIST, respectively, whereas the risks for increases in central adiposity were 1.22 (95% CI = 0.86-1-73), and 1.05 (95% CI = 0.72-1.53) for TERadj, and WAISTadj, respectively. Discussion: The results indicate significant spousal resemblance and risk for increases in fatness in the general Canadian population, whereas both the spousal resemblance and risks for increases in AT distribution, adjusted for level of fatness, are non-significant. The results suggest that shared environmental factors may be important determinants of spousal similarities in changes in total body fatness over time; however, cohabitation in the short term may not lead to increases in spousal resemblance.
AB - Objective: Spousal similarities in 7-year changes in obesity and obesity-related phenotypes were examined in a sub-sample of 376 pairs of spouses from a sample of 1487 participants in the 1988 Campbell's Survey follow-up of the 1981 Canada Fitness Survey. Measures: Indicators of body fatness included the body mass index (BMI), the sum of five skinfolds (SF5), and waist circumference (WAIST), whereas those for relative adipose tissue (AT) distribution included the ratio of two trunk to three extremity skinfolds, adjusted for SF5 (TERadj), and WAIST adjusted for BMI (WAISTadj). Results: Spouse correlations were 0.17, 0.17, and 0.17 for the BMI (p<0.05) and 0.20,0.20, and 0.21 for SF5 (p<0.05) for the initial measurement, follow-up, and 7-year change, respectively. Spouse correlations for WAIST were some-what lower: 0.16 (p<0.05), 0.11 (p<0.05), and 0.11 (p<0.05) for the initial measurement, follow-up, and 7-year change, respectively, whereas those for TERadj and WAISTadj were low and not significant. Spouses of probands who had increases in adiposity and central AT distribution had elevated risks of also increasing in these parameters. Spousal risks (risk ratios) were 1.48 (95% CI = 1.08-2.03), 1.49 (95% CI =1.10-2.02), and 1.68 (95% CI= 1.28-2.21) for increases in BMI, SF5, and WAIST, respectively, whereas the risks for increases in central adiposity were 1.22 (95% CI = 0.86-1-73), and 1.05 (95% CI = 0.72-1.53) for TERadj, and WAISTadj, respectively. Discussion: The results indicate significant spousal resemblance and risk for increases in fatness in the general Canadian population, whereas both the spousal resemblance and risks for increases in AT distribution, adjusted for level of fatness, are non-significant. The results suggest that shared environmental factors may be important determinants of spousal similarities in changes in total body fatness over time; however, cohabitation in the short term may not lead to increases in spousal resemblance.
KW - Campbell's survey
KW - Family study
KW - Fat distribution
KW - Fatness
KW - Shared environment
UR - http://www.scopus.com/inward/record.url?scp=0033227231&partnerID=8YFLogxK
U2 - 10.1002/j.1550-8528.1999.tb00712.x
DO - 10.1002/j.1550-8528.1999.tb00712.x
M3 - Article
C2 - 10574512
AN - SCOPUS:0033227231
SN - 1071-7323
VL - 7
SP - 545
EP - 551
JO - Obesity research
JF - Obesity research
IS - 6
ER -