From: Heritability and genetic etiology of habitual physical activity: a twin study with objective measures
Zygosity
MZ
DZ
Trait
r
p
HPA
0.64
0.0003
0.36
0.08
Low
0.62
0.0004
0.12
0.58
Moderate
0.60
0.0008
0.10
0.65
High
0.63
0.06
0.79