infundadas (14), pois este ainda pode ser considerada mais seguro por nao causar alongamento constante nos ligamentos do joelhos (16) .Nao sao percebidos tambem quaisquer efeitos negativos sobre a estabilidade no ligamento do joelho, as medicoes de estabilidade do joelho com 1,6 vezes o peso corporal nao demonstrar nenhuma alteracao aguda (17).Nos exercicios completos ocorre uma maior participacao dos musculos posteriores, estabilizando a patela atraves de uma co- contracao da muscular reduzindo a tensao na patela em ate 50% (18)(19)(20).Analisando diversos estudos, pode-se perceber que o agachamento profundo e um exercicio seguro, mais ainda que o agachamento 90o, e que precisamos unir a enorme quantidade de estudos sobre agachamento com a pratica de exercicios basicos como : levantamento de peso olimpico, agachamento, levantamento terra, entre outros que vao se perdendo devidos a excesso de zelo , tabus, conclusoes erroneas e principalmente por falta de pratica dos profissionais do fitness.Referencia Bibliografica1- Chiu, Loren Z F; Burkhardt, Eric MA, A Teaching Progression for Squatting Exercises Strength & Conditioning Journal: Volume 33 - Issue 2 - pp 46-54 April 2011 2 - Kell, RT. The influence of periodized resistance training on strength changes in men and women. J Strength Cond Res 25:735744, 2011.3- Schmidtbleicher, D. Motor ability strength: Structure, components, adaptations, training methods and periodization. In: Rowing - experience, explore, research [German]. W. Fritsch, ed. Gieen, Germany: Sport Media, 2003. pp. 1540.4- Hoff, J, Berdahl, GO and Bra ten, S. Jumping height development and body weight considerations in ski jumping. In: Science and Skiing II, E.Mu ller, H. Schwameder, C. Raschner, S. Lidinger and E. Kornexl, eds. Hamburg, Germany: Verlag Dr. Kovac, 2001. pp. 403412.5- Weiss, LW, Fry, AC, Wood, LE, Relyea, GE, and Melton, C. Comparative effects of deep versus shallow squat and leg-press training on vertical jumping ability and related factors. J Strength Cond Res 14: 241247, 2000.6- Bossi L.C.,Treinamento Funcional na Musculacao, Phorte SP 20117- Baker, D. Acute and long-term power responses to power training: Observations on the training of an elite power athlete. Strength CondJ 23: 4756, 2001.8- Stone, MH,O Bryant, HS, McCoy, L, Coglianese, R, Lehmkuhl, M, and Schilling, B. Power and maximum strength relationships during performance of dynamic and static weighted jumps. J Strength Cond Res 17: 140147, 2003.9- Influence of Squatting Depth on Jumping Performance, Hartmann, Hagen; Wirth, Klaus; Klusemann, Markus; Dalic, Josip; Matuschek, Claus; Schmidtbleicher, Dietmar, Journal of Strength & Conditioning Research; 2012; Vol. 26, Iss. 1210- Cappozzo, A, Felici, F, Figura, F, and Gazzani, F. Lumbar spine loading during half-squat exercises. Med Sci Sports Exerc 17: 613620, 1985.11 -. McGill, SM. The biomechanics of low back injury: Implications on current practice in industry and the clinic. J Biomech 30: 465475, 1997.12- . Potvin, JR, Norman, RW, and McGill, SM. Reduction in anterior shear forces on the L4/L5 disc by the lumbar musculature. Clin Biomech 6: 8896, 1991.13- Comfort, Paul; Pearson, Stephen J; Mather, David , An Electromyographical Comparison of Trunk Muscle Activity During Isometric Trunk and Dynamic Strengthening Exercises Journal of Strength & Conditioning Research: January 2011 - Volume 25 - Issue 1 - pp 149-15414-