Hi
Welcome to HST!
<div></div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">I'd like to know if there's hypertrophy with the 5rep or if it's for strength.</div>
I am going to include an extract of the HST-Faq E-book, which too a while to find, so I suggest you download it and readt it thorugh! It is worth it!
30.3. But why is HST organized into 2 week blocks and the 15/10/5 rep ranges - I don't understand it...
Keep in mind that you have to consider the tensile strength of the tissue itself. Lifting weights to induce hypertrophy is a very much a mechanical process.
You are causing physical stress to the protein structures of the muscle tissue. A given amount of load is going to be required regardless of the number of repetitions, to induce hypertrophy.
So, please try to think outside of reps and sets. The purpose of every workout is simply to apply an effective stimulus by providing an incremental increase in tension from the last workout.
Just arbitrarily picking a certain number of workouts before you change isn’t going to ensure you are applying an effective stimulus. That’s more akin to periodization, rather than hypertrophy-specific progressions.
Muscle tissue does not distinguish between rep ranges. There is not a special number of contractions that "triggers" a hypertrophic response. The only thing that triggers hypertrophy is sarcolemma distortion and subsequent microtrauma and to a MUCH lesser extent, metabolic activity.
Metabolic activity is more anticatabolic, then anabolic. These pathways of mechanotransduction have been mapped and are not in question. Yes, there are always more details to be ironed out, but the pathways are now established that go from mechanical load to muscle cell growth.
In order to adhere to the principles of training induced muscle hypertrophy we must have progressive load. Progressive load sufficient to cause hypertrophy will limit the number of times the muscle can successfully contract against the resistance.
There are several old studies that narrowed it down to a range of perhaps 20 reps (if the muscle is deconditioned) all the way up to 120% of your 1RM. So, depending on how conditioned the muscle is, you can use any rep range between 20 reps and negatives.
While using HST, your reps decrease over time simply because the load is constantly increasing. It's that simple. There is no magic number, though others might have you believe there is.
Why 6 workouts in 2 week blocks? Because it takes about that long using decent increments to reach your specified RM.
The whole purpose of HST’s organization is to give you some idea of what that stimulus needs to be on that day’s workout.
SD is kind of like a reset button. It gives you some place to start, where you are pretty sure about the condition of the tissue when you begin.
Hope this helps some, in the mean time keep in mind that the higher the load the lower your reps should be (for safety) but also because you won't be able to do any more reps!
Then again, the higher load produces more hypertrophy because the micro trauma is greater therefore the repair work results in bigger muscles.
With negatives, there is reasearch proving that a contracted muscle when stretched produces hypertrophy, which is essentially what happens with negatives.
Cheers