Related Experiment Video
Updated: May 28, 2026
05:08
Measurement of Tissue Non-Heme Iron Content using a Bathophenanthroline-Based Colorimetric Assay
Published on: January 31, 2022
COL6A1 gene and Ironman triathlon performance
K O'Connell1, M Posthumus, M Collins
1Human Biology, University of Cape Town, South Africa.
International Journal of Sports Medicine
|October 21, 2011
Summary
The COL6A1 TT genotype is linked to faster cycling and overall race times in Ironman triathletes, suggesting it may be a marker for endurance performance.
Area of Science:
- Genetics and Sports Science
- Human Performance and Endurance
Background:
- Mutations in the type VI collagen gene (COL6A1) are known to cause myopathy and muscle weakness.
- COL6A1 knockout mice exhibit impaired running performance and reduced muscle strength.
- The COL6A1 rs35796750 polymorphism has been associated with complex phenotypes.
Purpose of the Study:
- To investigate the association between the COL6A1 rs35796750 polymorphism and performance in the Ironman triathlon.
- To determine if specific genotypes correlate with endurance performance in elite athletes.
Main Methods:
- Genotyping of 661 participants for the COL6A1 rs35796750 polymorphism.
- Collection of finishing times for swim, bike, run, and overall race from 4 South African Ironman triathlons.
- Statistical analysis to compare performance between genotypes and tertiles.
Main Results:
- Participants with the COL6A1 TT genotype showed significantly faster cycling (p=0.014) and overall race times (p=0.030).
- A significant linear trend indicated the TT genotype was more prevalent in faster cycling tertiles (p=0.008).
- No significant genotype differences were found for swim or run performance.
Conclusions:
- The COL6A1 gene, specifically the rs35796750 polymorphism, may serve as a potential marker for endurance cycling performance.
- These findings suggest potential mechanisms involving type VI collagen's role in muscle and tendon composition influencing athletic ability.
More Related Videos
Related Concept Videos
01:31Translation
Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
01:31Translation
Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
01:11Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
Genetic polymorphisms in drug targets have emerged as critical determinants of interindividual variability in drug response and toxicity. Pharmacogenomic investigations increasingly focus on identifying these variations to personalize and optimize therapeutic interventions. A drug target may be a receptor, enzyme, or signaling protein involved in pharmacologic responses or disease-related pathways. While early pharmacogenetic studies focused primarily on drug metabolism, current research...
01:33Pleiotropy
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
01:24Hemoglobin
Hemoglobin is a globular protein made up of four subunits. Two of these subunits are alpha chains, and the other two are beta chains. Each subunit contains a molecule of heme, which has an iron atom and can bind to oxygen. When an oxygen molecule binds to one heme group, it changes the shape of hemoglobin, making it easier for the other heme groups to bind oxygen as well.
When all four heme groups are bound to oxygen, the resulting molecule is called oxyhemoglobin. As a result, arterial blood...
When all four heme groups are bound to oxygen, the resulting molecule is called oxyhemoglobin. As a result, arterial blood...
01:27Exercise and Muscle Performance
Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...