[quote author="Carl Valle" date="1287975586"]No. I am asking for studies that show that specific studies that heavy sleds of 50%+ or similar create better responses then a holistic program.
I haven’t read anyone on this board that said 50% sleds are better than a holistic program. What I’ve read is that many like to include them as PART of a holistic program. Do you know of any studies that prove that heavier sleds result in slower short sprint performance when included in a holistic program?
Please share what those are…
Almost everything you do besides sprinting.
I don’t use specific means besides sprinting. I use general means that support training and reducing injuries.
Nice dodge…again. You know I wasn’t using the term ‘specific’ in that way. Besides sprinting, list any means you use that have been proven to improve 100m times in a scientific study.
This is a great question. What do you think?
[/b]Technology can become a time saver, but improperly relied on can be a terrible waste of time and resources. I also think that while technology can improve the information flow, in the hands of those poorly versed in statistics, well, like Twain said, “lies, damned lies, and statistics”.[/quote]
We are talking about the thought that weighted “heavy” sleds are superior and that notion was shared in blogs and other media. When you make a change to a program you not only change the primary variable, but the the other variables that interact with those variables. If you increase the load of the sleds, what adjustments to your program should you do based on your experience? Just add without adjusting? When I ask for evidence, it could be logic, history, or scientific research. Heavy sleds have pros and cons and perhaps you could create a table and we can see what pros are worth it. For example we know the heavier the sled it’s more likely to dampen the elastic responses to the body and that maybe a problem. Many coaches are using conventional squats so overcoming inertia and RFD from olympic lifts may be enough and I am hedging my bets that they are. What I know is that if I am sprinting and higher speeds and lifting the same way with someone sprinting slower with the same strength and power I have had more imprinted velocities to my athletes.
Max Speed and total 100m performances is another subject. Start a thread in the forum and I may comment on it further. My view is that weight training may not specifically help top speed but it has proven to make statistical increases of possible improvement in the block clearance and in short acceleration. Every 100m dash has to start from there…..for me max speed is from sprinting and speed endurance is from overdistance.