Glucose Causes A Very Strong Blunting If Cortisol Response To Weightlifting, Ameliorate Growth

Discussion in 'Scientific Studies' started by GutFeeling, Feb 21, 2020.

  1. GutFeeling

    GutFeeling Member

    Joined:
    Sep 25, 2017
    Messages:
    203
    Gender:
    Male
    Influence of weight training exercise and modification of hormonal response on skeletal muscle growth. - PubMed - NCBI
    ( The most important parts are at the end)

    Subjects
    With approval from the Institutional Review Board of the University of Southern
    California, fifteen apparently healthy young men (18-25 y) recruited from the
    University community volunteered to participate in the study. After explanation of
    the study protocol and requirements, written informed consent was obtained
    before testing began. All subjects had some recreational weight lifting experience,
    but none were competitive lifters, or had participated in a weight lifting program
    in the previous six months. All subjects were reported to be non-steroid users, and
    had no history of any endocrine disorders, glucose intolerance, or chronic disease
    that might influence their responsiveness to strenuous exercise.
    Exercise Conditions
    On an initial visit to the laboratory, each subject was tested for maximal strength
    on Universal (Universal Gym Equipment, Inc.) equipment for the nine exercises
    utilised in the protocol. These exercises included; bench press, seated rows,
    shoulder press, lat pull downs, triceps extensions, biceps curls, leg press, leg
    extensions, and leg curls. One repetition maximum (1RM) was determined as the
    maximal amount of weight the individual could move through the full range of
    motion only one time without change in body position, other than that dictated by
    the specific exercise motion. No less than one week later, seven subjects returned
    to the laboratory for the first of two exercise sessions to complete series 1 of the
    study. Following a four hour fast, the subjects completed (on two occasions
    separated by one week) the weight lifting routine, performing 3 sets of 10
    repetitions of each exercise at 75% of their 1RM. One minute of rest was allowed
    between sets, and two minutes of rest between exercises. Randomly assigned, one
    session included the ingestion of a non-caloric placebo beverage, and the other
    included the ingestion of a 6% CHO solution (Gatorade) - each a quantity of 8.5
    ml per kg of body weight. The total volume of fluid was divided by 28 servings,
    allowing for between 22.5 and 30 ml (1.5 and 2 Tbs) depending on body size to be
    ingested between each set of exercise.
    All exercise sessions were performed
    between 1500 and 1600 to minimise the influence of diurnal variations on
    hormone release.
    For series 2, eight subjects began a 12-week individualised progressive
    resistance training program one week following testing for maximal strength.
    Training consisted of the nine exercises (previously mentioned) performed on
    three alternate days per week. To the best of their ability, the subjects completed
    three sets of 10 repetitions of each exercise at 75% of their 1RM. One minute of
    rest was allowed between each set, and two minutes of rest between each exercise.
    When the subjects were able to complete 12 repetitions on the third set, the
    resistance was increased (approximately 50/0). Throughout the training regimen,
    the subjects ingested (as randomly assigned) either a non-caloric placebo
    beverage, or a 6% CHO solution (Gatorade) at regular intervals during each
    training session - each a quantity of 8.5 ml per kg of body weight. All exercise
    sessions were performed between 1500 and 1600 to minimise the influence of
    diurnal variations on hormone release.



    Important parts:
    weight lifting exercise with 6% CHO ingestion significantly(p < 0.05)
    elevated blood glucose and plasma insulin levels above baseline, as well as that
    OCCUlTing with the placebo. This resulted in a significant blunting of the cortisol response
    (7% with CHO compared to 99% with placebo).

    Weight training exercise with CHO
    ingestion resulted in significantly greater gains in both type I (19.1%) and type II (22.5%)
    muscle fibre area than weight training exercise alone.

    The bad side of the study was the small sample size (15 men) but since the difference of cortisol levels is huge I found worth posting

    Edit: Forgive the bad grammar, my spell checker keeps trolling me
     

    Attached Files:

  2. kreeese

    kreeese Member

    Joined:
    Sep 7, 2016
    Messages:
    265
    Gender:
    Male
    Location:
    nyc!
    nice!! but of course...is this study a joke??? I coulda told ya this 100 years ago...in fact this was known a long time ago...thanks for posting!!
     
  3. CLASH

    CLASH Member

    Joined:
    Sep 15, 2017
    Messages:
    911
    Gender:
    Male
  4. OP
    GutFeeling

    GutFeeling Member

    Joined:
    Sep 25, 2017
    Messages:
    203
    Gender:
    Male
    About the dosage 8.5 ml x 70kg = 595ml

    1 Gatorade (6%) contains 591ml = 34grams of glucose
    So just 2 or 3 tablespoon of sugar would be enough
     
  5. Hans

    Hans Member

    Joined:
    Aug 24, 2017
    Messages:
    1,582
    Gender:
    Male
    Glucose also prevents exercise induced leaky gut, which is very important.
     
Loading...