zaskar said:
So you getting better times i would think it's from training on the bike 2 years.
I would argue that, unless you are a dedicated cyclist (and not a triathlete or other multi-sport athlete) the majority of this discussion is not applicable. '
True, for a single sport athlete, especially a relatively simplistic sport such as cycling (no offense intended, but it is essentially a sport with a single movement type as opposed to various team sports that require quite a few disciplines) the SAID principle as it is being applied here makes a lot of sense. However, for a triathlete, especially an otherwise busy one, training on the bike every day is simply not an option.
WarrenG had it right, in this case. There are imbalances that need to be corrected, and weight training is, at the very least, an excellent way to monitor these imbalances. Another point is that triathletes need to compensate for an impact activity (running) that results in too much wear and tear to follow the SAID principle exclusively. In this case, weight training will improve bone density, connective tissue strength, and other non-aerobic related factors that can result in an athlete being able to tolerate greater training frequency and duration. This will translate to a better overall athlete.
In fact, I would wager this can apply to cyclists as well. Unless you eat a perfect diet tailored precisely to your activity level, and train on a perfectly fitted bike under completely ideal conditions while riding with perfect form every day, you will always be dealing with some imperfection that is causing excessive wear and tear to your body. If you're riding in the TDF, you can stop reading, but otherwise, you're probably not this perfect.
At the end of the day, people can argue all they want that torque does not equal power, and that increased maximal force production in no way translates to improved strength-endurance, and that w/kg is the ultimate metric for deciding on the relative quality of one's program, but it makes no difference. It seems like this whole argument is essentially going in circles.
Yes, in a perfect situation the best way to become a better cyclist is to cycle. But in reality, the human body is not a simple system that can operate in ideal/perfect conditions 24/7, and there are certain non-ideal circumstances that need to be addressed, whether it's non-training related wear and tear or other athletic endeavours that need to be taken into consideration. In this case, strength training is, in my opinion, a necessity. So I think what anybody needs to take away from this debate is the context in which it is being discussed. Theoretically, no, a cyclist doesn't need to lift. Even sprinting on a bike is so far removed from limit strength that there's little crossover benefit.
However, will squatting make you a faster sprinter on a bike? Yes. Is it the best way to make you a faster sprinter? Definitely not. Does it have a place in the triathlete's regimen? Absolutely. Does it have benefits to the athlete that will result in a longer career? Unequivocally yes.