Interesting

Discussion in 'Hypertrophy Research' started by NWlifter, Nov 27, 2018.

  1. NWlifter

    NWlifter Active Member

    https://www.mdpi.com/1422-0067/19/11/3649/htm

    Abstract
    :
    Lactate is a metabolic substrate mainly produced in muscles, especially during exercise. Recently, it was reported that lactate affects myoblast differentiation; however, the obtained results are inconsistent and the in vivo effect of lactate remains unclear. Our study thus aimed to evaluate the effects of lactate on myogenic differentiation and its underlying mechanism. The differentiation of C2C12 murine myogenic cells was accelerated in the presence of lactate and, consequently, myotube hypertrophy was achieved. Gene expression analysis of myogenic regulatory factors showed significantly increased myogenic determination protein (MyoD) gene expression in lactate-treated cells compared with that in untreated ones. Moreover, lactate enhanced gene and protein expression of myosin heavy chain (MHC). In particular, lactate increased gene expression of specific MHC isotypes, MHCIIb and IId/x, in a dose-dependent manner. Using a reporter assay, we showed that lactate increased promoter activity of the MHCIIb gene and that a MyoD binding site in the promoter region was necessary for the lactate-induced increase in activity. Finally, peritoneal injection of lactate in mice resulted in enhanced regeneration and fiber hypertrophy in glycerol-induced regenerating muscles. In conclusion, physiologically high lactate concentrations modulated muscle differentiation by regulating MyoD-associated networks, thereby enhancing MHC expression and myotube hypertrophy in vitro and, potentially, in vivo.
     
    _Simon_ and Sci like this.
  2. Sci

    Sci Well-Known Member

    Nice
     
    NWlifter likes this.
  3. Brixtonian

    Brixtonian Active Member

    Ok. I put it through Google translate.... is it a recipe for chicken fried noodles?
     
  4. NWlifter

    NWlifter Active Member

    LOL simple terms, lactate from lactic acid, can induce hypertrophy in muscle cells
     
  5. Brixtonian

    Brixtonian Active Member

    :) ok - and hopefully keeping this in simple terms - how - or even, can - that be applied practically? I understand, again very basically, lactic acid that builds up during intense exercise. Is this a way of identifying hypertrophy has been stimulated?

    Please don't reply in Latin. Us Brits really don't learn that anymore....:D:D:D:D
     
  6. NWlifter

    NWlifter Active Member

    LOL
    I'd say, there is more benefit to the 15's than we thought.... low reps take the tension path, where higher reps with a 'burn' might stimulate hypertrophy via this path.
     
    Brixtonian likes this.
  7. Brixtonian

    Brixtonian Active Member

    Ok. Yes, that is very interesting.

    I have followed HST since the early 2000s, and I always felt that the 15s were underrated.
    I came from years of HIT style training (blame Dorian Yates!! We only have one legend!) and so I was used to heavy sets of 5-10 reps, not 15s, and I really felt it, and, tbh, struggled with the 15s.

    I noticed on here, over time, that people were often talking about skipping the 15s and just going straight to 10s and 5s and extended 5s.
    But I always stuck with them.

    The problem is, is that 15s, and above, were orginally mis-associated with fat burning and endurance, whereas the 5s and 10s were the 'heavy-duty' stuff. That's what us macho guys - and gals - wanted. So it was at least partly psychological.
    But I always committed to the 15s. I still do.

    More so now, as I got into myo reps - which as Blade points out - are pretty much optimal at the 15 rep range.

    Currently, I do 15s on Mondays, but 1 set as an activation and then myo reps until auto regulation kicks in.
    (I then do 5s on Wednesday and 10s on Fridays - DUP)
    But I don't do myo reps for squats or deadlifts, so I will do 2 X 15 (cutting, as I am currently) or 3 X 15 for bulking.

    Ultimately, it is important to vary the rep ranges anyway, whether linear or DUP, so it never made sense to me to drop the 15s, so I never did.

    Thank you for the input and compounding my beliefs.

    Brix
     
    _Simon_ likes this.
  8. NWlifter

    NWlifter Active Member

    Ah cool info,
    oh wow so you vary load during each week instead of progressive tension like HST? does that seem to work as well?

    I agree, I think the 15's could even be extended rather than skipped. People have and do grow from muscle burning muscle frying fatigue...
     
  9. Brixtonian

    Brixtonian Active Member

    I like the linear progression as originally set out in the vanilla HST program, but DUP also fits in too, and it was something Blade wrote about a few years ago in his "Optimal routine" article somewhere in the wide abandonment of the internet, of varying reps and sets during the week.

    Basically, at the beginning of the week, I hit 15s (using myo reps where I can) - this also warms the muscles and tendons up for the heavy/strength day on Wednesday - 5s - and then I finish with a typical hypertrophy range day (10s) on the Friday

    A lot of the routines out there - Layne Norton's PHAT for example - start the week with the heavy day, after a weekend rest.
    Maybe as I am getting older, I feel the benefits of starting with the 'light day' - 15s - to warm up my joints and tendons etc.. before the heavy session on Wednesday.

    That said, I also do still believe in linear progression too, but, now I am older - I do see an advantage in varying the load during the week (light/heavy/medium) rather than struggling with my joints on 2 full weeks of heavy 5s, and usually a further 2 weeks of negatives.
     
    _Simon_ likes this.
  10. NWlifter

    NWlifter Active Member

    OK cool, that makes sense :)
     

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