Overview
ACE encodes a key enzyme of the renin-angiotensin system that regulates blood pressure and electrolyte balance. The I/D (Insertion/Deletion) polymorphism influences ACE activity and is associated with athletic performance.
17q23.3 (Chromosome 17)
Fitness
Complex
I/D polymorphism is very common
Function & Significance
ACE converts angiotensin I into angiotensin II, a potent vasoconstrictor. The enzyme plays a central role in:
- Blood Pressure Regulation: Increases blood pressure
- Fluid Balance: Regulates sodium and water
- Heart Function: Influences heart size and performance
- Muscle Metabolism: Influences energy availability
🏃 ACE and Sports
The I/D polymorphism influences athletic performance:
- II Genotype: Low ACE activity, better for endurance
- DD Genotype: High ACE activity, better for power/sprint
- ID Genotype: Intermediate, balanced
Studies: II genotype is more frequent among elite mountaineers and marathon runners. DD genotype is more frequent among power athletes.
🧬 Relevant SNPs
The I/D polymorphism (rs4340):
17:63488529
/
Significance: Insertion/Deletion Polymorphism
• II: Low ACE activity, better endurance, lower blood pressure
• DD: High ACE activity, better power, higher blood pressure
• ID: Intermediate ACE activity, balanced
🏋️ Training Recommendations
Based on your ACE genotype:
- II Type: Focus on endurance training (running, cycling, swimming). Particularly benefits from altitude training.
- DD Type: Focus on strength training and explosive movements (weightlifting, sprinting, HIIT).
- ID Type: Versatile training, good all-round athletes. Can train both disciplines.
Important: Everyone can improve through training, regardless of genotype!
🩺 Health Aspects
DD Genotype:
- Higher risk of hypertension
- Increased risk of myocardial infarction (heart attack)
- Regular blood pressure monitoring recommended
II Genotype:
- Lower blood pressure
- Lower cardiovascular risk
- Better adaptation to high altitude
📚 Data Sources
The information on this page is based on the following scientific sources:
- OMIM: #106180 – Online Mendelian Inheritance in Man
- dbSNP: rs4340 – SNP Database (NCBI)
- ClinVar: Clinical Variant Database (NCBI)
- PubMed: ACE and Athletic Performance
- Sports Medicine: ACE Genotype Studies
Last Update: February 2026
Biological Function
Associated Conditions
Analyzed Markers
I/D polymorphism - II: better endurance, DD: better power, higher blood pressure