BtonRider said:
Thanks again for those references. You certainly appear to have a lot of experience with carbohydrate metabolism and blood volume/ stroke volume studies. I didn’t notice any studies where you looked at weight training though. Did I just overlook those? It’s very possible.
You're right, substrate metabolism/skeletal muscle characteristics are really far more my speciality. However, that doesn't mean that I don't know my way around strength testing/training,
e.g.:
35. Urban RJ, Bodenburg YH, Gilkison C, Foxworth J, Coggan AR, Wolfe RR, Ferrando A. Testosterone administration to elderly men increases skeletal muscle strength and protein synthesis. Am J Physiol 1995; 269:E820-E826.
37. Alway SE, Coggan AR, Sproul MS, Abdujalil AM, Robitaille P-M. Muscle torque in older untrained and endurance trained men. J Geront 1996; 51A:B195-B201.
Perhaps more to the point, as the ultimate form of intergrative physiologist (i.e., as an exercise physiologist) it is my
job to understand how, e.g., muscle responds and adapts to all forms of activity, including resistance training. However, even accepting your implication - i.e., I don't know what I'm talking about because I haven't personally published any studies of weight training of cyclists - the question then becomes, why are
you voicing
your opinion? That is, you've provided no evidence that you possess any expertise at all in this particular area, despite being specifically asked by Ric Stern to do so.
BtonRider said:
On the other two papers you referred to earlier I found very interesting, but I’m still not convinced. From what I can ascertain, the first paper illustrates that women who do squats for weight training do not improve their endurance even though they do increase their squat max. That’s a pretty specific study only looking at 21 women (7 control and 14 experimental) who just do squats. There’s a whole range of weight training exercises they could have done. Then they didn’t even look at their maximum power output. I’ve been saying I would expect explosive strength training to affect someone in a short effort (e.g. a sprint) and they didn’t look at this.
Two points:
1. The squat is a closed-chain kinetic exercise that recruits practically all of the major muscle groups of the lower body, in particular the gluteals, quadriceps, and hamstrings. These are the same muscles that provide most of the power when pedaling, and as such the squat is a perfectly appropriate "bread-and-butter" movement when attempting to use weight training to improve cycling performance, e.g., among track sprinters. For example, if you dig around the web a little bit you should be able to find pictures of Tournant (world record holder in the kilo) performing squats in the infield of the velodrome at which the French national team trains.
2. Your expectation of transfer to strength gains achieved via lifting to increases in power when cycling are highly overblown, probably because you don't sufficiently appreciate the importance of specificity principle. The article here outlines the issues in more detail:
BtonRider said:
The second paper states “It is concluded that replacing a portion of endurance training by explosive strength training prevents a decrease in STP (short-term performance) without compromising gains in endurance performance of trained cyclists.” Which is what I’ve been saying.
Nonetheless, the
potential still exists for resistance training to compromise gains in endurance performance, for the reasons outlined by Ric and as discussed in the recent symposium published in Med Sci Sports Exerc.
BtonRider said:
They also used a more thorough weight training program than just squats. When I look at the data though, I can’t agree with their findings. (Just my luck, a paper that supports my supposition and I don’t believe their data). They also note a statistically insignificant increase in max power. The initial variability in their population of 14 cyclists (6 experimental and 8 control) is more significant than their improvements in STP. It doesn’t looks like there was a statistically significant change either way in any of their results. All the standard deviations they report are huge.
You need to brush up on your statistics: the magnitude of intersubject variability really tells you nothing about the probability of statistical significance in a repeated measures design.
BtonRider said:
I imagine there are people who train 5 days a week and aren't a Cat 2 racer. So those people would benefit from weight training or not?
Assuming said training is performed on the bike and also assuming that by "benefit" you mean an improvement in endurance performance, my answer would be no.