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HIPERTROFIA HIPERTROFIA SARCOPLASMÁTICA OU MIOFIBRILAR: Autores como BOMPA & CORNACCHIA, 1998; ZATSIORSKY, 1999; afirmam a existência de dois tipos de hipertrofia: Sarcoplasmática e miofibrilar. A primeira seria encontrada em fisiculturistas e atletas que treinam >10 Rep. Já a segunda, seria vista em levantadores olímpicos, pois treinam < 6 Rep. ALWAY et al. (1998) realizou um estudo para verificar essas diferenças, com 4 grupos de indivíduos: Levantadores Olímpicos e Fisiculturistas, Maratonistas, pessoas ativas e sedentários. ESTÍMULO TIPO DE FIBRAS RESULTADO VOL. RELATIVO Força I e II 2,5 Ret. Sarcoplasmatico Endurance I e II 1,7 Sarcoplásma Esportes recreativos I e II 1,6 Miofibrilas Sedentários I e II - Eram iguais
Functional and structural adaptations in skeletal muscle of trained athletes. J Appl Physiol. 1988 Mar;64(3):1114-20. Alway SE, MacDougall JD, Sale DG, Sutton JR, McComas AJ. Department of Physical Education, McMaster University, Hamilton, Ontario, Canada. Abstract Twitch contractile and ultrastructural characteristics of the human triceps surae were determined in six male strength-trained athletes, six endurance-trained athletes, six active controls, and seven sedentary controls of similar height and age. Twitch contraction time in the triceps surae complex was 20% longer in strengthtrained and sedentary groups than in endurance-trained or active control groups. In the 15 subjects peak twitch torque and one-half relation time in the triceps surae were 22.6 +/- 7.9 N.m and 91.1 +/- 18.3 ms, respectively. Mean fiber area in the gastrocnemius was approximately 1.6-, 1.7-, and 2.5-fold greater in the active control, endurance-trained, and strength-trained groups, respectively, relative to the sedentary group. Despite these large differences in fiber areas, the fiber fractional volume of the sarcoplasmic reticulum-transverse tubule network averaged 3.38 +/- 0.86% and 5.50 +/- 0.94% in type I and type II fibers, respectively, in all subjects. The fractional fiber volume of cytoplasm and lipid were similar for all four groups. However, mitochondrial volume was approximately 30% lower in both fiber types of the strength-trained group relative to the other groups. This implies that with exercise-induced hypertrophy, the sarcoplasmic reticulum, cytoplasm, and lipid components increase proportionately with contractile protein, whereas the mitochondrial fraction does not. The proportion of type I fibers in the soleus, medial gastrocnemius, and lateral gastrocnemius was 75.2 +/- 8.3, 58.5 +/- 6.1, and 52.4 +/- 4.2%, respectively, and was similar in all subject groups. The results demonstrate that twitch duration is prolonged in strength-trained athletes relative to endurance athletes.(ABSTRACT TRUNCATED AT 250 WORDS) PMID: 3366734 [PubMed - indexed for MEDLINE]
Page 1 and 2: Prof. Fabricio Fouraux
Page 3 and 4: Fisiologia do Treinamento • Anaer
Page 5 and 6: Fisiologia do Treinamento • Anaer
Page 7 and 8: Fisiologia do Treinamento • Aeró
Page 9 and 10: Vários Desportos e seu sistema (s)
Page 11 and 12: • Qual a função do limiar de ex
Page 13: • Quadro: Sistemas de neurotransm
Page 16 and 17: Reação é feita em pH básico (9.
Page 18 and 19: Aqui, o axônio motor é visto como
Page 20 and 21: Outras imagens de axônios e placas
Page 22 and 23: Na placa, o axônio préterminal ra
Page 24 and 25: Contração Muscular Durante a cont
Page 26 and 27: Contração Muscular A introdução
Page 28 and 29: Contração Muscular O ADP e Pi sã
Page 30 and 31: Contração Muscular Neste momento
Page 32 and 33: Fisiologia do Treinamento • Algun
Page 36 and 37: Princípios Básicos Princípio da
Page 38 and 39: Fisiológico: Lei do tudo ou nada:
Page 40 and 41: Psicológico: Motivação. 80 60 4
Page 44 and 45: HIPERPLASIA: HIPERTROFIA Existem d
Page 46 and 47: REPETIÇÕES ADAPTAÇÕES TIPOS DE
Page 48 and 49: Fatores Atuantes: Microlesões: HI
Page 50 and 51: Microlesões: HIPERTROFIA “Para u
Page 52 and 53: Myofibrillar disruption following a
Page 54 and 55: HIPERTROFIA Para compreender como a
Page 56 and 57: Applications of vascular occlusion
Page 58 and 59: Progressive stretch overload of ske
Page 60 and 61: O mais avançado equipamento de ava
Page 62: • Circuit training with style •
Page 65 and 66: Drop - set Métodos de Treinamento
Page 67 and 68: Métodos de Treinamento Bi, Tri e
Page 69 and 70: Métodos de Treinamento Repetiçõ
Page 71 and 72: Set 21 Métodos de Treinamento 1 -

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