The S&C-related Studies Thread

Discussion in 'Strength & Conditioning Discussion' started by miaou, Dec 11, 2011.

  1. Badger67

    Badger67 Taxidea taxus

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    This is interesting.

    https://peerj.com/articles/1462/

    "he effects of muscle hypertrophy and atrophy on force production and joint moments have been previously described. However, there is a paucity of research showing how hypertrophy and atrophy may affect moment arm (MA) lengths. The purpose of this model was to describe the mathematical relationship between the anatomical cross-sectional area (ACSA) of a muscle and its MA length. In the model, the ACSAs of the biceps brachii and brachialis were altered to hypertrophy up to twice their original size and to atrophy to one-half of their original size. The change in MA length was found to be proportional to the arcsine of the square root of the change in ACSA. This change in MA length may be a small but important contributor to strength, especially in sports that require large joint moments at slow joint angular velocities, such as powerlifting. The paradoxical implications of the increase in MA are discussed, as physiological factors influencing muscle contraction velocity appear to favor a smaller MA length for high velocity movements but a larger muscle MA length for low velocity, high force movements."
     
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  2. Badger67

    Badger67 Taxidea taxus

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  3. Badger67

    Badger67 Taxidea taxus

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  4. Rusk

    Rusk Black Belt

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    My own research shows that i am 2cm shorter after deadlifting and squating in the same workout.
     
  5. Badger67

    Badger67 Taxidea taxus

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    Hip thrusts vs front squats in adolescents aged 14-17 on performance. (6 weeks).
    https://bretcontreras.com/wp-conten...scent-males-A-randomized-controlled-trial.pdf

    " Magnitude-based effect-sizes revealed potentially beneficial effects for the front squat in both front squat 3 RM strength and vertical jump height when compared to the hip thrust. No clear benefit for one intervention was observed for horizontal jump performance. Potentially beneficial effects were observed for the hip thrust compared to the front squat in 10 m and 20 m sprint times. The hip thrust was likely superior for improving normalized isometric mid-thigh pull strength, and very likely superior for improving hip thrust 3 RM and isometric mid-thigh pull strength. These results support the force vector theory."
     
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  6. Badger67

    Badger67 Taxidea taxus

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  7. Badger67

    Badger67 Taxidea taxus

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  8. Noodles03

    Noodles03 Blue Belt

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  9. Badger67

    Badger67 Taxidea taxus

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    Could be the athletes involved, could be the exact level/degree of squat specificity, anomaly (to either side), motivational factors, muscle mass localized to the joint and angle of use. Lots to consider really, i was just shocked to see how much partial squats actually have a place, even as a supplementary.
     
  10. Noodles03

    Noodles03 Blue Belt

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    I was shocked too. I'm definitely going to be adding some partial squats into my routine.
     
  11. Badger67

    Badger67 Taxidea taxus

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  12. JauntyAngle

    JauntyAngle International man of mystery

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    It's obvious from a common-sense perspective, but it's not easy to explain given standard models of depression. As far as I know, almost all of the models of unipolar depression explain it in terms of dysfunctional learning, cognitive models, cognitive-behavioural patterns etc. So if, for example, the reason you are depressed is because you attribute success in life to external temporary factors and failure in life to internal, permanent factors, as some psychologists think ('attributional style' theory), why exactly would cleaning up your diet change that? To me it seems rather interesting.
     
  13. Badger67

    Badger67 Taxidea taxus

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    How you nourish yourself and brain will have a profound impact on neural excitation and subsequently your thought processes. This would change your outlook on things in life, decrease some stress levels allowing one to cope better and improve mood function. The effects of high levels of glutamate (found in crap foods as an example containing high amounts of soy or hydrolyzed products) end up being excitotoxic to the brain.
     
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  14. Noodles03

    Noodles03 Blue Belt

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  15. Badger67

    Badger67 Taxidea taxus

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  16. Noodles03

    Noodles03 Blue Belt

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  17. Sano

    Sano Black Belt

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    Chris Beardsley is the man. I would read his articles though to get the bigger picture. He goes through a lot of stuff, so naturally some of the studies are a little fluffy.

    EDIT: In line with the velocity topic, this one is pretty cool:
    [​IMG]

    Accompanied by this article:
    https://www.strengthandconditioningresearch.com/perspectives/lifting-weights-fast/
     
    Last edited: Jun 24, 2017
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  18. selfcritical

    selfcritical Brown Belt

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    I think this one has been replicated too. Hex Bar seems like a really good choice for Dynamic Effort stuff
     
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  19. NurseKnuckles

    NurseKnuckles My Mom's stronger than you belt

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    Heard today Coconut advocates are CoCo when it comes to interpreting the results from those studies out of Columbia U
     
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  20. Badger67

    Badger67 Taxidea taxus

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    https://bmcnutr.biomedcentral.com/articles/10.1186/s40795-017-0170-2

    "Appetite sensations, food preferences, energy expenditure and substrate oxidation are significantly altered in response to changes in meal macronutrient composition produced by modifications in the protein content of a meal and consumption of a SSB. Most notably, consumption of a SSB during a meal markedly reduces energy efficiency and fat oxidation independent of macronutrient composition."
     
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