I have recently been looking at some hypertrophy research and would like to put to you some of the comments and conclusions I have found.

What follows is my understanding and my words, any corrections would be greatly appreciated.

The body is made up of different types of muscle fibres.
Different training protocols will preferentially recruit and emphasise the development of a particular fibre type.

Your research appears to be aimed at unspecific hypertrophy. That is to say it was not aimed at hypertrophying a specific muscle fibre type, in an effort to enhance a specific athletic quality.

For example, the hypertrophy development required by a powerlifter, in an open weight class, might be very different from that required by a lightweight boxer (who must stay within his weight class), or a sprinter (who required a high degree of relative strength to overcome his mass), or a bodybuilder (who doesn't require athletic performance).

My understanding is that there are two options to create hypertrophy: 1 Mechanical stress and 2 metabolic stress.

Your research indicates that metabolic stress causes a greater degree of hypertrophy (?) in comparison to mechanical stress but even if this is true, would you say that the type of hypertrophy gained may not be the most desirable for some athletes?

Would you say, that although this research indicates that metabolic stress is the most effective single method; best results are going to be achieved following an inclusive strategy of using both metabolic and mechanical stress variables?

What about time under tension? I am thinking along the line of emphasizing acceleration on the concentric and slowing down on the eccentric. My understanding is that acceleration would improve general athleticism, would target type II fibres, improve hypertrophy (because it is a larger fibre type) and provide a higher metabolic effect; while slowing down the eccentric would create significantly greater muscle tissue disruption and improve results under the heading of mechanical tension?

Would your results perhaps shown the opposite conclusion, magnifying mechanical stress results if you emphasised the eccentric phase?

Have you considered what might be the effect on hypertrophy, if you took a weight that was at 60% 1RM and pursued volumes that were far greater than traditionally used in bodybuilding?

Have you considered the effect of rest? I am thinking along the line of incomplete rest to stimulate hormonal production?
I look forward to your research results comparing hypertrophy gains between metabolic and mechanical stress training groups.

Regards

Anthony sharah