Association Among MCT1 rs1049434 Polymorphism, Athlete Status, and Physiological Parameters in Japanese Long-Distance
Shotaro Seki1, Tetsuro Kobayashi1, Kenji Beppu2
1Faculty of Sport Science, Nippon Sport Science University, 7-1-1, Fukasawa, Setagaya-ku 158-8508, Japan.
Genes
|January 8, 2025
Summary
The AA genotype of the MCT1 T1470A polymorphism is linked to better athletic status and aerobic capacity in Japanese long-distance runners. This finding highlights the role of monocarboxylate transporters in endurance performance.
Area of Science:
- Exercise Physiology
- Genetics
- Sports Science
Background:
- Monocarboxylate transporters (MCTs), particularly MCT1, are crucial for lactate transport.
- The T1470A polymorphism in MCT1 is associated with variations in lactate metabolism and aerobic performance.
Purpose of the Study:
- Investigate the frequency of the T1470A polymorphism in Japanese long-distance runners.
- Compare physiological parameters related to athletic performance across different genotypes and athletic levels.
Main Methods:
- Compared the T1470A polymorphism frequency between 158 Japanese long-distance runners and 649 controls using chi-square tests.
- Collected physiological data, including respiratory gas measurements during graded exercise tests, from 57 long-distance runners.
Main Results:
- The AA genotype frequency increased with higher competitive levels in runners.
- Individuals with the AA genotype exhibited significantly higher oxygen uptake at lactate threshold and maximal oxygen uptake compared to T allele carriers.
Conclusions:
- The AA genotype of the MCT1 T1470A polymorphism is associated with enhanced athletic status and aerobic capacity in Japanese long-distance runners.
- This genetic variation may play a role in optimizing endurance performance.
