Results: 3

1.
FIGURE 3

FIGURE 3. From: Gene x environment interaction of vigorous exercise and body mass index among male Vietnam-era twins123.

The heritability of BMI (point estimate and 95% CI) by self-report of vigorous exercise (VE) and age. Gene × environment interaction estimated by twin structural equation modeling. n = 8627 study participants drawn from 2710 monozygotic and 2327 dizygotic twin pairs.

Jeanne M McCaffery, et al. Am J Clin Nutr. 2009 April;89(4):1011-1018.
2.
FIGURE 1

FIGURE 1. From: Gene x environment interaction of vigorous exercise and body mass index among male Vietnam-era twins123.

Bivariate model adapted from reference 38. VE, vigorous exercise; A1 and A2, additive genetic effects for twins 1 and 2 within a twin pair, respectively; C1 and C2, shared environmental effects for twins 1 and 2 within a twin pair, respectively; Mi, age moderator values for the ith individual within each twin pair; ra, additive genetic correlation; rc, shared environmental correlation; re, nonshared environmental correlation.

Jeanne M McCaffery, et al. Am J Clin Nutr. 2009 April;89(4):1011-1018.
3.
FIGURE 2

FIGURE 2. From: Gene x environment interaction of vigorous exercise and body mass index among male Vietnam-era twins123.

Gene × environment interaction model adapted from reference 40. VE, vigorous exercise; BMI1 and BMI2, BMI in twins 1 and 2 within a twin pair, respectively; A1 and A2, additive genetic effects for twins 1 and 2 within a twin pair, respectively; C1 and C2, shared environmental effects for twins 1 and 2 within a twin pair, respectively; E1 and E2, nonshared environmental effects for twins 1 and 2 within a twin pair, respectively; M, moderator 1 (VE); N, moderator 2 (age); T, VE-moderated component of A; U, VE-moderated component of C; V, VE-moderated component of E; F, age-moderated component of A; G, age-moderated component of C; H, age-moderated component of E; I, effect of VE on mean BMI; J, effect of age on mean BMI; K, effect of VE × age interaction on mean BMI.

Jeanne M McCaffery, et al. Am J Clin Nutr. 2009 April;89(4):1011-1018.

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