TABLE 2.
Additive genetic, shared environmental, and nonshared environmental effects for vigorous exercise (VE) and BMI and their correlation1
| a2 | c2 | e2 | ra | rc | re | |
| VE | 0.10 | 0.18 | 0.72 | — | — | — |
| (0.00, 0.31) | (0.01, 0.30) | (0.63, 0.80) | — | — | — | |
| BMI | 0.67 | 0.04 | 0.29 | — | — | — |
| (0.56, 0.072) | (0.00, 0.14) | (0.27, 0.32) | — | — | — | |
| VE-BMI | — | — | — | −0.03 | −0.05 | −0.09 |
| — | — | — | (−0.54, 0.36) | (−0.99, 0.99) | (−0.16, −0.02) |
1
n = 8627 study participants drawn from 2710 monozygotic and 2327 dizygotic twin pairs (results of gene × environment interaction twin structural equation modeling). 95% CIs are in parentheses. a2, additive genetic variance; c2, shared environmental variance; e2, nonshared environmental variance; ra, additive genetic correlation; rc, shared environmental correlation; re, nonshared environmental correlation.