As many studies identified of genetic variants linked to training responses and sport-related traits, we could hypothesize that the R allele was more common in sprint and power athletes and the X allele more common in endurance athletes. Other said, the Middle/Long distance runner (X allele) was would have less response to strength training and Sprinter (R allele) would have less response to endurance training. However, in fact Sprinter would need endurance training to improve aerobic capacity and specific endurance and MD/LD need strength training as well.
Due to the fact, that there are huge amounts of drops outs in athletes career for talented youth Sprinter/MD/LD runners, therefore have a couple of questions :
1. Is any biomarkers we could use to get proper limit of load (Intensity, reps, and recovery) for Sprinter (R allele) while doing endurance exercise or for MD/LD runners (X allele) while performing strength/speed training, so they can keep their genetic potential ?
2. How we could know the proper limit of load/intensity for strength, speed training for MD/LD runners or endurance training for sprinters ?
3. Is the quality of R allele (i.g. speed of muscle contraction) or X (i.g. O2 consumption) allele will reduce due to mismatched training ?
Thank in advance.
Hi, hope you all fine and healty,
R allele responsible for high intensity exercise and directly related with fast twitch FTb muscle fibers, İt means that the intensity of the exercise should be more than % 85, in order to trigger the FTb fibers. The X allele totaly deal with long duration endurance, it means that we use generaly slow twitch fibers, and so the intensity of the exercise should be not more than %60 of maksimum hearth rate.
Conclusion, it doesnt mean that ıf you have R allele you will, many variables tha effect athletic performance (many genes, environment, life style, knowledge of the trainer, diet, motivation etc.)
1&2 - In order to measure maximal strength ability safely and accurately in sprint/middle and long distance runner we must first work out the most relevant muscle groups, this is a matter of basic physiology.
In my opinion if you have access to the equipment then a Biodex machine is the most reliable form of measurement, you can isolate individual muscle groups and get a direct measurement of both eccentric and concentric strength. This is also a great way to get a bench mark to then move into practical strength tests. For example if if you are wanting to test a maximal squat in a untrained or a novice lifter then testing strength on a biodex machine is a great way to safely assess where there strength is at before moving into free weights.
Hope this helps if you need any references for this or have any questions about the answer then message me.
It is reported that there are many "RR type" players in measurement items that require instantaneous power such as back muscle strength and long jump.
https://www.nikkei.com/article/DGXNASFK1800F_Y1A011C1000000/
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