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Athletic performance is influenced by both genetic Athletic performance is influenced by both genetics and environment. Research shows genetics may explain about 50% of performance differences, but this field has strengths, weaknesses, opportunities, and threats that must be carefully managed
9 Genetic and athletic performance
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Key Concepts Explained Simply
1. Genetics and Performance
Genes affect traits like strength, endurance, speed, recovery, and injury risk
Athletic performance is not controlled by one gene, but by many genes together
Environment (training, diet, lifestyle) also plays a major role
Gene expression can change due to environment (epigenetics)
2. Example: ACTN3 Gene
ACTN3 helps produce powerful muscle contractions
People with the R allele tend to perform better in power/strength sports
People without the protein (XX genotype) tend to perform better in endurance sports
This does not guarantee success, only increases likelihood
3. Precision Exercise (Personalized Training)
Uses genetic information to tailor training programs
Avoids “one-size-fits-all” training
Can help with:
Training response
Recovery planning
Injury prevention
Talent identification using genes alone is not reliable
SWOT STRUCTURE (Main Framework)
Strengths
Advanced genetic technologies (sequencing, AI, machine learning)
Strong scientific evidence that genetics influences performance
Rapid growth of sports genetics research
International research collaborations and guidelines
Genetic testing is becoming more accepted and accessible
Weaknesses
Many studies have small sample sizes
Athletic traits are very complex and polygenic
Results often lack consistency and generalizability
High cost of genetic research
Genotype scores currently have weak predictive power
Bias in published research
Genetic association does not prove causation
Opportunities
Precision exercise and personalized training
Multi-omics research (genomics, proteomics, metabolomics)
Large multicenter studies with better data
Health screening and injury prevention
Anti-doping detection methods
Commercial applications (with regulation)
Threats
Ethical concerns (privacy, consent, discrimination)
Misleading direct-to-consumer genetic testing companies
Gene doping and genetic manipulation
Lack of regulation and global guidelines
Ethical Issues (Very Important Topic)
Athletes must give informed consent
Privacy and data protection risks
Genetic data may affect insurance, jobs, or mental health
Testing children raises serious ethical concerns
Gene editing for performance is banned
Final Takeaway (One-Line Summary)
Genetics can support athletic performance and health through personalized training, but current scientific, ethical, and practical limitations mean it must be used carefully and responsibly
9 Genetic and athletic performa…
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