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Addiction Psychiatry 2018
Journal of Addiction Research & Therapy
ISSN: 2155-6105
Page 49
August 13-14, 2018
Madrid, Spain
8
th
International Conference on
Addiction Psychiatry
Background:
Despite documented benefits of sport participation,
attrition rates for organized youth sport programs are surprisingly
high. High attrition rates for youth sport programs highlights the
need for longitudinal studies to understand how and why sport
participation trajectories change during adolescence and young
adulthood. Besides psychosocial and environmental factors,
genetic variationhasbeensuggestedasan important determinant
of physical activity-related behaviors. Since neurotransmitter
dopamine influences the way humans learn and responsivity
of human reward system, this study explored the effects of
dopamine receptor genes (i.e., DRD2, DRD4, and DRD5) on sport
participation trajectories from adolescence to young adulthood.
Methods:
This study used the National Longitudinal Study of
Adolescent Health (Add Health) data. Group-based trajectory
modeling was utilized to examine the effect of dopamine receptor
genes on trajectories of sport participation from adolescence to
young adulthood.
Results:
A three-group trajectorymodel best fit sport participation
among male participants and a two-group trajectory model best
fit sport participation among female participants. In both gender
groups, the more individuals possess A1 allele of DRD2, the
less likely they are to be in high-decreasing group rather than
low-stable group, and this relationship was stronger for women.
Another interesting finding is that, in male participants, the more
individuals possess A1 allele of DRD2, the more likely they are to
be in high-stable group rather than high-decreasing group.
Conclusions:
The findings of this study can be contributable
to the literature by providing critical information on the effect
of DRD2 on sport participation trajectories from adolescence
through young adulthood.
cgl81@snu.ac.krThe effects of dopamine receptor genes on the trajectories of
sport participation from adolescence through young adulthood
Chung Gun Lee
Seoul National University, Republic of Korea
J Addict Res Ther 2018, Volume 9
DOI: 10.4172/2155-6105-C2-040