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  1. #1
    Senior Member ZiR RED's Avatar
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    Default Feel the burn, increase muscle mass

    Eur J Appl Physiol. 2011 Jan;111(1):17-27. Epub 2010 Aug 28.
    Responses of muscle mass, strength and gene transcripts to long-term heat stress in healthy human subjects.

    Goto K, Oda H, Kondo H, Igaki M, Suzuki A, Tsuchiya S, Murase T, Hase T, Fujiya H, Matsumoto I, Naito H, Sugiura T, Ohira Y, Yoshioka T.
    Source

    Department of Physiology, Graduate School of Health Sciences, Toyohashi SOZO University, Toyohashi, Aichi, 440-8511, Japan. gotok@sepia.ocn.ne.jp

    Abstract

    The present study was performed to investigate the effects of long-term heat stress on mass, strength and gene expression profile of human skeletal muscles without exercise training. Eight healthy men were subjected to 10-week application of heat stress, which was performed for the quadriceps muscles for 8 h/day and 4 days/week by using a heat- and steam-generating sheet. Maximum isometric force during knee extension of the heated leg significantly increased after heat stress (~5.8%, P < 0.05). Mean cross-sectional areas (CSAs) of vastus lateralis (VL, ~2.7%) and rectus femoris (~6.1%) muscles, as well as fiber CSA (8.3%) in VL, in the heated leg were also significantly increased (P < 0.05). Statistical analysis of microarrays (SAM) revealed that 10 weeks of heat stress increased the transcript level of 925 genes and decreased that of 1,300 genes, and gene function clustering analysis (Database for Annotation, Visualization and Integrated Discovery: DAVID) showed that these regulated transcripts stemmed from diverse functional categories. Transcript level of ubiquinol-cytochrome c reductase binding protein (UQCRB) was significantly increased by 10 weeks of heat stress (~3.0 folds). UQCRB is classified as one of the oxidative phosphorylation-associated genes, suggesting that heat stress can stimulate ATP synthesis. These results suggested that long-term application of heat stress could be effective in increasing the muscle strength associated with hypertrophy without exercise training.

    PMID:20803152 [PubMed - indexed for MEDLINE]
    Could be useful for rest day recovery to increase enzymatic activity in muscles. But who wants to sit there with a heat pack on their legs for 8 hours...or has the time, I should say?

    Br
    Nimirum insanus paucis videatur, eo quod Maxima pars hominum morbo jactatur eodem.

    -Quintus Horatius Flaccus

    [He appears mad indeed but to a few, because the majority is infected with the same disease.]

  2. #2
    Senior Member Benson's Avatar
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    Quote Originally Posted by ZiR RED View Post
    But who wants to sit there with a heat pack on their legs for 8 hours...or has the time, I should say?
    A post workout sauna might be nice though...
    Remember, believe none of what you hear and half of what you see...





  3. #3
    Senior Member ZiR RED's Avatar
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    I love sauna on off-days or after swimming. Sit in there with some papers and read for 45 min.
    Nimirum insanus paucis videatur, eo quod Maxima pars hominum morbo jactatur eodem.

    -Quintus Horatius Flaccus

    [He appears mad indeed but to a few, because the majority is infected with the same disease.]

  4. #4
    Senior Member methodice's Avatar
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    Josh will do it!
    <span style="color:#FF0000">Latest tube recs</span>: <span style="color:#0000FF">TP?</span> http://www.youtube.com/watch?v=5-i1cJh7L6I
    <span style="color:#FF0000">The last civilized bastion of truth and scientific reason declares you don't need to workout, just have good nutritional habits. The majority of us here are drug addicts and/or mentally disturbed, we also pretend to train but in reality we spend our time buzzing on adderall and masturbating to homosexual monkey porn</span>

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    Senior Member Kimbo's Avatar
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    Quote Originally Posted by methodice View Post
    Josh will do it!
    LOL, that was my very first thought as well.

    I think Spook posted something on here a while back about sauna or a hot shower increasing hypertrophy.


    If someone says something about you, and it really bothers you, it's probably because it's true.

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    Senior Member Josh's Avatar
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    Quote Originally Posted by methodice View Post
    Josh will do it!
    Josh does do it. LOL.

    Actually I have recently started using my Infrared lamp for extended periods in an attempt to improve recovery through increased blood flow - about 2hr.d-1 although not every day.

    I have been toying with the idea of trying to apply the heat whilst sleeping, however I have found heat disrupts my sleep considerably. 8hr during the day would be quite tricky indeed due to interference with the rest of life.

    I cannot comment on any change in CSA/muscle at this stage, but it certainly seems to improve recovery rates in target muscles.

    J
    Stop animal testing on dogs!

    Anti-vivisectionists are a more reliable model.


  7. #7
    Senior Member Josh's Avatar
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    Quote Originally Posted by Kimbo View Post
    LOL, that was my very first thought as well.

    I think Spook posted something on here a while back about sauna or a hot shower increasing hypertrophy.
    IIRC hyperthermia has a positive effect on androgen signalling via Heat Shock Protein.

    J
    Stop animal testing on dogs!

    Anti-vivisectionists are a more reliable model.


  8. #8
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    on a related note:
    Muscle Nerve. 2011 Jul;44(1):115-25. doi: 10.1002/mus.22029.
    Prior heat stress effects fatigue recovery of the elbow flexor muscles.

    Iguchi M, Shields RK.
    Source

    Physical Therapy and Rehabilitation Science, Carver College of Medicine, 1-252 Medical Education Building, University of Iowa, Iowa City, Iowa 52242-1190, USA.

    Abstract

    INTRODUCTION:

    Long-lasting alterations in hormones, neurotransmitters, and stress proteins after hyperthermia may be responsible for the impairment in motor performance during muscle fatigue.
    METHODS:

    Subjects (n = 25) performed a maximal intermittent fatigue task of elbow flexion after sitting in either 73° or 26°C to examine the effects of prior heat stress on fatigue mechanisms.
    RESULTS:

    The heat stress increased the tympanic and rectal temperatures by 2.3° and 0.82°C, respectively, but there was full recovery prior to the fatigue task. Although prior heat stress had no effects on fatigue-related changes in volitional torque, electromyographic (EMG) activity, torque relaxation rate, motor evoked potential (MEP) size, and silent period (SP) duration, prior heat stress acutely increased the pre-fatigue relaxation rate and chronically prevented long-duration fatigue (P < 0.05).
    CONCLUSIONS:

    These findings indicate that prior passive heat stress alone does not alter voluntary activation during fatigue, but prior heat stress and exercise produce longer-term protection against long-duration fatigue.
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    Guess im gonna visit the sauna more regularly

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    Post workout Saunas are really refreshing indeed. They relax the injured fibers really well. I used to enjoy the bathtub sauna my mom used to make me after I came back from the gym. It was really amazing and I must say that it enhanced my repair period.

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    I love saunas!!!

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    Well theoretically it has a high chance of giving the results and really awesome results at that. But I don't know how feasible it practically can be. I mean you are right about saying that who would want to sit there for a whole 8 hours snuggling a heat bag on their legs. Illogical I presume. Nobody, these days has the time. But perhaps some building enthusiasts might go into it.
    Also genetics as stated will have a high role in how much a person is affected after this treatment. Further, there are some unreliable hormonal changes that might be taking place in the body during the procedure.

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    I actually lucked out. The place that I work out, actually has a sauna in it. So I am able to get a great work out and then go to the sauna to get the heat there. So I can easily relax and not have to be concerned about my muscles that much.

  14. #14
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    Sauna here I come !

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