Ассоциации между индуцированными силовой тренировкой изменениями концентрации гормонов, силой мышц их гипертрофией в большой когорте исследуемых

Изучались взаимосвязи между вызванным силовой тренировкой изменением концентрации гормона роста, тестостерона, ИФР-1 и кортизола и силой и гипертрофией мышц. Авторы обнаружили очень слабые корреляции между всеми показателями.

West D. W. D., Phillips S. M. Associations of exercise-induced hormone profiles and gains in strength and hypertrophy in a large cohort after weight training // Eur J Appl Physiol (2012) 112:2693–2702

Д.В.Д. Вест, С.М. Филлипс

АССОЦИАЦИИ МЕЖДУ ИНДУЦИРОВАННЫМИ СИЛОВОЙ ТРЕНИРОВКОЙ ИЗМЕНЕНИЯМИ КОНЦЕНТРАЦИИ ГОРМОНОВ, СИЛОЙ МЫШЦ ИХ ГИПЕРТРОФИЕЙ В БОЛЬШОЙ КОГОРТЕ ИССЛЕДУЕМЫХ

Аннотация

Цель этого исследования состояла в том, чтобы исследовать связи между острыми гормональными реакциями, вызванными физическими нагрузками, и адаптацией к тренировке с большими отягощениями в большой группе (n = 56) молодых мужчин.

Методика

Сразу после физической нагрузки в середине 12-недельной тренировки с отягощениями определялись: гормон роста в сыворотке крови (GH), свободный тестостерон (fT), инсулиноподобный фактор роста (IGF-1) и кортизол.

Результаты

Острые гормональные реакции коррелировали с увеличением мышечной массы тела (LBM), площади поперечного сечения мышечных волокон (CSA) и силы при выполнении жима ногами с максимальным отягощением. Не было никаких существенных корреляций между вызванными упражнениями повышениями (область под кривой AUC) концентрации гормона роста, свободного тестостерона и IGF-1 и увеличением LBM или силы жима ногами. Значимые корреляции были обнаружены для кортизола, который обычно считается гормоном, указывающим на катаболизм белка, с изменением LBM (r = 0,29, P <0,05) и площади поперечного сечения  волокон II типа (r = 0,35, P <0,01), а также гормона роста и увеличения площади волокон (тип I: r = 0,36, P = 0,006; тип II: r = 0,28, P = 0,04, но не мышечной массы). Никаких корреляций с силой мышц не наблюдалось.

Выводы

Мы сообщаем, что острые гормональные реакции кортизола и гормона роста, вызванные физическими нагрузками, слабо коррелируют с изменениями площади поперечного сечения мышечных волокон и LBM, вызванными тренировкой с отягощениями (только кортизол), но не с изменениями в силе.

Ключевые слова

Гипертрофия, Тренировочная программа. Мышечная масса, тестостерон, гормон роста, кортизол

D. W. D. West, S. M. Phillips

ASSOCIATIONS OF EXERCISE-INDUCED HORMONE PROFILES AND GAINS IN STRENGTH AND HYPERTROPHY IN A LARGE COHORT AFTER WEIGHT TRAINING

Abstract

The purpose of this study was to investigate associations between acute exercise-induced hormone responses and adaptations to high intensity resistance training in a large cohort (n = 56) of young men. Acute post-exercise serum growth hormone (GH), free testosterone (fT), insulin-like growth factor (IGF-1) and cortisol responses were determined following an acute intense leg resistance exercise routine at the midpoint of a 12-week resistance exercise training study. Acute hormonal responses were correlated with gains in lean body mass (LBM), muscle fibre cross-sectional area (CSA) and leg press strength. There were no significant correlations between the exercise-induced elevations (area under the curve –AUC) of GH, fT and IGF-1 and gains in LBM or leg press strength. Significant correlations were found for  cortisol, usually assumed to be a hormone indicative of  catabolic drive, AUC with change in LBM (r = 0.29, P<0.05) and type II fibre CSA (r = 0.35, P<0.01) as well as GH AUC and gain in fibre area (type I: r = 0.36,  P = 0.006; type II: r = 0.28, P = 0.04, but not lean mass). No correlations with strength were observed. We report that the acute exercise-induced systemic hormonal responses of cortisol and GH are weakly correlated with resistance training-induced changes in fibre CSA and LBM (cortisol only), but not with changes in strength.

Keywords

Hypertrophy, Training program. Muscle mass, Testosterone, Growth hormone, Cortisol

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С уважением, А.В.Самсонова