interesting thread

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(Fausto @ Jun. 08 2007,12:07)</div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">Excellent, shouldn't we post it here?</div>
i just did
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Will Dan or one of the experts (or anyone) please clarify this for me?

Volume: &quot;Overall, moderate volumes (&amp;#8776;30–60 repetitions per session for DER training) appear to yield the largest responses.&quot;

So does this mean you need to do at least 30 reps per workout or per week.

For example does this mean

Monday Wednesday Friday

Chest and back 4 sets of 10 reps for 40 reps per workout or 120 per week.

Or are they talking about 30 to 60 reps per week...

Like 3 sets of 5 = 15 reps per muscle group per workout or 45 total reps per week?

IM confused?
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(Joe.Muscle @ Jun. 08 2007,08:03)</div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">Will Dan or one of the experts (or anyone) please clarify this for me?

Volume: &quot;Overall, moderate volumes (&amp;#8776;30&amp;#8211;60 repetitions per session for DER training) appear to yield the largest responses.&quot;

So does this mean you need to do at least 30 reps per workout or per week.

For example does this mean

Monday Wednesday Friday

Chest and back 4 sets of 10 reps for 40 reps per workout or 120 per week.

Or are they talking about 30 to 60 reps per week...

Like 3 sets of 5 = 15 reps per muscle group per workout or 45 total reps per week?

IM confused?
rock.gif
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Per workout, it`s stated in the first paragraphs of the study...but it goes a tad bit deeper than that. It`s clearly extremely interesting and a great read. And I`d love for Bryan to come out of the shadows and participate either here or there, as this is clearly in his playground:)
 
The influence of frequency, intensity, volume and mode on muscle hypertrophy

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Sports Med. 2007;37(3):225-64.
The influence of frequency, intensity, volume and mode of strength training on whole muscle cross-sectional area in humans.

I thought I'd summarize this comprehensive paper both for my own benefit and for those who want the highlights. I've restricted my summary to the parts of the paper that talk about your typical &quot;dynamic external resistance&quot; training. The gist of the paper is that while we do know what works for hypertrophy (pretty much everything, to an extent), we really don't know what's optimal, especially in trained individuals and in the long run. Dan also posted some excerpts on his forum: http://hypertrophy-research.com/phpB...opic.php?t=213

Results
No relationship could be found between frequency of training and the increase per day in muscle cross sectional area. When the intensity was plotted against the rate of increase, a weak tendency was found for the rate to increase with increasing intensity. The highest rates of increase tended to occur around 75% of 1RM. When volume was plotted against the rate of increase, greater gains in muscle mass were seen initially with increasing volume while there were diminishing returns as the volume increased further. The highest rates of increase tended to occur with 30-60 repetitions per session.

Discussion
Frequency: For hypertrophy, studies suggest that training two or three times per week is superior to training one time per week, even when volume is equal. However, there doesn't appear to be a benefit of three sessions per week over two. &quot;Although some interesting trends can be discerned from the data... there is clearly a need for further research on training frequency in both highly-trained and less-trained subjects.&quot;

Intensity: &quot;The studies reviewed in this article show that there is a remarkably wide range of intensities that may produce hypertrophy. Still, there seems to be some relationship between the load (or torque) and the rate of increase in CSA.&quot; This is not linear, but seemed to peak around 75%. &quot;Thus, the results of this review support the typical recommendations with intensity levels of 70–85% of maximum when training for muscle hypertrophy, but also show that marked hypertrophy is possible at both higher and lower loads.&quot;

Volume: &quot;Overall, moderate volumes (&amp;#8776;30–60 repetitions per session for DER training) appear to yield the largest responses.&quot; An exception to this is with very high loads (90% 1RM or 120% to 230% 1RM with eccentrics) where high rates of growth have been shown with volumes as low as 12-14 repetitions per session. To date, relatively few studies have directly compared the effects of different volumes of work on the hypertrophic response as measured by scanning methodology.&quot; The paucity of data clearly warrants further research.

Mode of Training and Type of Muscle Action: You often hear statements like &quot;eccentric training produces the greatest muscle hypertrophy&quot;. &quot;This review demonstrates that given sufficient frequency, intensity and duration of work, all three types of muscle actions can induce significant hypertrophy at impressive rates and that at present, there is insufficient evidence for the superiority of any mode and/or type of muscle action over other modes and types of training in this regard.&quot; In fact, the data suggest that pure eccentric training is inferior to both concentric and eccentric+concentric training, though this is still a subject of debate rather than a scientific certainty.

Rest Periods and the Role of Fatigue: &quot;Upon closer examination, it appears that when maximal or near-maximal efforts are used, it is advantageous to use long periods of rest. This is logical in light of the well known detrimental effects of fatigue on force production and electrical activity in the working muscle. If high levels of force and maximum recruitment of motor units are important factors in stimulating muscle hypertrophy, it makes sense to use generous rest periods between sets and repetitions of near-maximal to maximal efforts... On the other hand, when using submaximal resistance, the size principle dictates that motor unit recruitment and firing rates are probably far from maximal until the muscle is near fatigue or unless the repetitions are performed with the intention to execute the movement very quickly.&quot;

Interactions Between Frequency, Intensity, Volume and Mode: &quot;Based on the available evidence, we suggest that the time-tension integral is a more important parameter than the mechanical work output (force × distance)... Overall, we feel that the trends observed in this review are consistent with the model for training-overtraining continuum proposed by Fry,[186] where the optimal training volume and also the volume threshold for overtraining decreases with increasing intensity... Regarding training for hypertrophy in already highly-trained individuals, there is at present insufficient data to suggest any trends in the dose-response curves for the training variables.&quot;

Eccentrics: &quot;Taken together, the results of these studies support the common recommendation of using somewhat lower frequencies and volumes for high-force eccentric exercise than for conventional resistance training...&quot;

Order of endurance/strength training: &quot;It has been suggested that strength training should be performed first, in order not to compromise the quality of the strength-training session.[194] However, this order may not necessarily be the best choice for inducing increases in muscle mass. Deakin[195] investigated the impact of the order of exercise in combined strength and endurance training and reported that gene expression associated with muscle hypertrophy responded more strongly when cycling was performed before strength training, instead of vice versa. Interestingly, in the study of Sale et al.,[111] performing cycling first seemed to induce the greatest increase in muscle area. Still, because the lack of studies investigating the effects of the order of exercise in concurrent training on hypertrophy, no firm conclusions can be drawn on this issue.&quot;

Time Course of Muscle Hypertrophy: &quot;Until recently, the prevailing opinion has been that neural adaptations play the dominant role during the first 6–7 weeks of training, during which hypertrophy is usually minor.&quot; However, several investigations [13,27,54,87,105,118,128] have demonstrated significant hypertrophy at the whole muscle level after short periods of training (3–5 weeks). &quot;Thus, there now plenty of evidence that significant hypertrophy can take place early on given proper frequency, intensity and volume of training,&quot; even prior to changes in muscle CSA. &quot;As argued by Phillips,[198] the idea that early gains in strength are due exclusively to neural adaptations seems doubtful... In some strength-training studies, the increase in muscle volume is delayed, while in others, the rate of growth is rapid. We speculate that less-damaging training modes may allow the hypertrophy response to start earlier. Regimens that include eccentric muscle actions, especially those involving maximal effort, appear to require a careful initiation and progression of training to avoid muscle damage and muscle protein breakdown [excessive apoptosis and proteolysis].&quot;

The Stimulus for Muscle Hypertrophy in Strength Training: &quot;Two studies by Martineau and Gardiner[216,217] have provided insight into how different levels of force and different durations of tension may affect hypertrophic signaling in skeletal muscle... they remarked that both peak tension and time-tension integral must be included in the modeling of the mechanical stimulus response of skeletal muscle... Based on the data reviewed in this paper, we speculate that hypertrophic signalling in human skeletal muscle is very sensitive to the magnitude of tension developed in the muscle. Hence, for very short durations of work, the increase in muscle size will be greater for maximal-eccentric exercise than for maximal-concentric exercise of similar durations... The response is presumably also dependent on the total duration of work and increases initially with greater durations. Thus, both short durations of maximal eccentric exercise and somewhat longer durations of concentric, isometric and conventional dynamic resistance exercise can result in impressive increases in muscle volume. However, especially with maximal eccentric exercise, damage also seems to come into play as the duration of work increases even further and the acute and/or cumulative damage may eventually overpower the hypertrophic process.&quot;

Training Implications and Recommendations: For your typical &quot;dynamic external resistance&quot;, recommendations are given for &quot;Moderate load slow-speed training&quot;, &quot;Conventional hypertrophy training&quot;, and &quot;Eccentric (ecc) overload training&quot;. These three modes are denoted as suitable for beginners, novice-well trained, and advanced-elite, respectively. For the &quot;Conventional hypertrophy training&quot; for the novice to the well trained, they recommend an 8-10RM load (75-80% 1RM), with 8-10 reps to failure or near failure, 1-3 sets per exercise, progression from 1–2 to 3–6 sets total per muscle group, moderate velocity (1-2 seconds for each CON and ECC), 60-180 seconds rest between sets, and 2-3 sessions per muscle group per week.

Conclusions: &quot;This review demonstrates that several modes of training and all three types of muscle actions can induce hypertrophy at impressive rates and that, at present, there is insufficient evidence for the superiority of any mode and/or type of muscle action over other modes and types of training. That said, it appears that exercise with a maximal-eccentric component can induce increases in muscle mass with shorter durations of work than other modes. Some evidence suggests that the training frequency has a large impact on the rate of gain in muscle volume for shorter periods of training. Because longer studies using relatively high frequencies are lacking, it cannot be excluded that stagnation or even overtraining would occur in the long term. Regarding intensity, moderately heavy loads seem to elicit the greatest gains for most categories of training, although examples of very high rates were noted at both very low and very high intensities when the sets were performed with maximum effort or taken to muscular failure. Thus, achieving recruitment of the greatest number of muscle fibres possible and exposing them to the exercise stimulus may be as important as the training load per se. For the total volume or duration of activity, the results suggest a dose-response curve characterised by an increase in the rate of growth in the initial part of the curve, which is followed by the region of peak rate of increase, which in turn is followed by a plateau or even a decline. It is recognised that the conclusions drawn in this paper mainly concern relatively short-term training in previously untrained subjects and that in highly trained subjects or for training studies extending for several months, the dose-response trends and the hypertrophic effects of different modes and types of strength training may be very different. The same may well be true for other populations, such as elderly and injured individuals.&quot;
 
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(Fausto @ Jun. 08 2007,14:44)</div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">Faz

I did not mean the link but the actual article.</div>
just joking with you mate
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but the article is on a link on the thread.
 
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(Morgoth the Dark Enemy @ Jun. 08 2007,12:51)</div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE"><div>
(Joe.Muscle @ Jun. 08 2007,08:03)</div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">Will Dan or one of the experts (or anyone) please clarify this for me?

Volume: &quot;Overall, moderate volumes (&amp;#8776;30&amp;#8211;60 repetitions per session for DER training) appear to yield the largest responses.&quot;

So does this mean you need to do at least 30 reps per workout or per week.

For example does this mean

Monday Wednesday Friday

Chest and back 4 sets of 10 reps for 40 reps per workout or 120 per week.

Or are they talking about 30 to 60 reps per week...

Like 3 sets of 5 = 15 reps per muscle group per workout or 45 total reps per week?

IM confused?
rock.gif
</div>
Per workout, it`s stated in the first paragraphs of the study...but it goes a tad bit deeper than that. It`s clearly extremely interesting and a great read. And I`d love for Bryan to come out of the shadows and participate either here or there, as this is clearly in his playground:)</div>
I know I gave it to Bryan back when I first got it.

I have had many hours of discussions with Wernbom and the idea of 30-60 per session is based on several factors so it's not a hard and fast rule.

Interestingly, at least to me of course, is one of the studies that produced the largest hypertrophy is one that incorporated rest between reps (5 secs).
 
sort of like a high-speed Max-Stim, huh? Interesting, but it would seem as to tire you out holding the weighted bar that long.
 
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(quadancer @ Jun. 09 2007,17:11)</div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">sort of like a high-speed Max-Stim, huh? Interesting, but it would seem as to tire you out holding the weighted bar that long.</div>
You don't hold it.
 
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(Joe.Muscle @ Jun. 08 2007,13:55)</div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">Volume: &quot;Overall, moderate volumes (&amp;#8776;30–60 repetitions per session for DER training) appear to yield the largest responses.&quot; An exception to this is with very high loads (90% 1RM or 120% to 230% 1RM with eccentrics) where high rates of growth have been shown with volumes as low as 12-14 repetitions per session. To date, relatively few studies have directly compared the effects of different volumes of work on the hypertrophic response as measured by scanning methodology.&quot; The paucity of data clearly warrants further research.
...

Training Implications and Recommendations: For your typical &quot;dynamic external resistance&quot;, recommendations are given for &quot;Moderate load slow-speed training&quot;, &quot;Conventional hypertrophy training&quot;, and &quot;Eccentric (ecc) overload training&quot;. These three modes are denoted as suitable for beginners, novice-well trained, and advanced-elite, respectively. For the &quot;Conventional hypertrophy training&quot; for the novice to the well trained, they recommend an 8-10RM load (75-80% 1RM), with 8-10 reps to failure or near failure, 1-3 sets per exercise, progression from 1–2 to 3–6 sets total per muscle group, moderate velocity (1-2 seconds for each CON and ECC), 60-180 seconds rest between sets, and 2-3 sessions per muscle group per week.</div>
This is a very interesting read, but I personally didn't see anything that made me sway my thought away from Bryan's methodology - in fact, I found myself bolstering my belief in HST, albeit with a few tweaks if I took the article at 100%. The focus on eccentric movement is no surprise, but I find it hard to believe that it's superior for the &quot;Elite&quot;. There's something to be said for the concentric portion of a movement in regards to muscle fiber recruitment with the correct load and volume.

Dunno - just my take.
 
<div></div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">For your typical &quot;dynamic external resistance&quot;, recommendations are given for &quot;Moderate load slow-speed training&quot;, &quot;Conventional hypertrophy training&quot;, and &quot;Eccentric (ecc) overload training&quot;. These three modes are denoted as suitable for beginners, novice-well trained, and advanced-elite, respectively.</div>

_tim

This seems to support HST in a major way, at least to me, sounds very closely related to 15/10/5 and then negatives, yeah baby!
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(Fausto @ Jun. 11 2007,19:14)</div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE"> <div></div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">For your typical &quot;dynamic external resistance&quot;, recommendations are given for &quot;Moderate load slow-speed training&quot;, &quot;Conventional hypertrophy training&quot;, and &quot;Eccentric (ecc) overload training&quot;. These three modes are denoted as suitable for beginners, novice-well trained, and advanced-elite, respectively.</div>

_tim

This seems to support HST in a major way, at least to me, sounds very closely related to 15/10/5 and then negatives, yeah baby!
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Correct me were I am viewing this study wrong.

But if we put this study up against HST then we are not doing enough reps (at least that how I interpret it)...again help me understand.

This is how I interpret the study.

30 reps is the bare minimul that trainees saw hypertrophy gains with on a 2 or 3 day routine.

Again 30 reps is the lowest total reps of the curve...so I would think 30 reps is the bare minimal total reps per training session one would want to do for hypertrophy.

Now I can't imagine going 60 reps per workout either...but I just saying according to the study one trainee must need at least 30 reps per muscle group per training session for optimal results.

Were with hst some people here are doing as low a volume as 10 reps per muscle group and others the &quot;norm&quot; are doing 20 reps.

Is my view wrong?
 
In teh study 30-60 reps were found optimal. Less than 30 reps show results, but not as much. I recommend most HSTers to do at least 2-3 sets/exercise, unless they are doing multiple exercise per bodypart.
 
Sci

That is exactly the back up I need, I am currently doing a superset type set up with 2 exercises p/body part, going well so far, I am however intending to keep the 1-2-3 set thing going, but will gauge as I go along, may have to drop frequency a wee bit.
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Still, 30 reps to me is works well I have tried 40 rather than 60, and it was ok, but pushy, 5 x 5 did not work badly at all either, I still think load plays a major role and that reps cannot be viewed independently of the load (intensity).

What's your take on that?
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(Fausto @ Jun. 15 2007,11:54)</div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">Sci

That is exactly the back up I need, I am currently doing a superset type set up with 2 exercises p/body part, going well so far, I am however intending to keep the 1-2-3 set thing going, but will gauge as I go along, may have to drop frequency a wee bit.
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Still, 30 reps to me is works well I have tried 40 rather than 60, and it was ok, but pushy, 5 x 5 did not work badly at all either, I still think load plays a major role and that reps cannot be viewed independently of the load (intensity).

What's your take on that?
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The study being discussed covers more than number of reps, it also discusses eccentrics an load, amongst other things.
 
<div></div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">Intensity: &quot;The studies reviewed in this article show that there is a remarkably wide range of intensities that may produce hypertrophy. Still, there seems to be some relationship between the load (or torque) and the rate of increase in CSA.&quot; This is not linear, but seemed to peak around 75%. &quot;Thus, the results of this review support the typical recommendations with intensity levels of 70–85% of maximum when training for muscle hypertrophy, but also show that marked hypertrophy is possible at both higher and lower loads.&quot;</div>

I see...Morgoth...I was kinda busy and I only remembered the comments vaguely when I responded, and I was responding to Sci's comments, anyway all things considered it is a fairly comprehensive study IMO.
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