Aagaard P, Simonsen EB, Trolle M, Bangsbo J, Klausen K. Effects of different strength training regimes on moment and power generation during dynamic knee extensions. Eur J Appl Physiol Occup Physiol , 1994; 69: 382-386.
Beck TW, Housh TJ, Johnson GO, Coburn JW, Malek MH, Cramer JT. Effects of a drink containing creatine, amino acids, and protein combined with ten weeks of resistancetraining on body composition, strength, and anaerobic performance. J Strength Cond Res , 2007; 21: 100
1. Behringer, M., Vom Heede, A., Yue, Z., & Mestrer, J. (2010). Effects of resistancetraining in children and adolescents: a meta-analysis. Pediatrics, 126(5), 1199–1210.
2. Faigenbaum, A.D., Lloyd, R.S., & Myer, G.D. (2013). Youth resistancetraining: past practices, new perspectives and future directions. Pediatric Exercise Science, 25(4), 591-604.
3. Ignjatović, A., Stanković, R., Radovanović, D., Marković, Ž., & Cvećka, J. (2009). Resistancetraining for youth. Facta Universitatis Series Physical Education and Sport, 7
Charles Ricardo Lopes, Marcelo Saldanha Aoki, Alex Harley Crisp, Renê Scarpari de Mattos, Miguel Alves Lins, Gustavo Ribeiro da Mota, Brad Jon Schoenfeld and Paulo Henrique Marchetti
Resistancetraining (RT) is a very popular form of physical training for increasing strength and skeletal muscle mass. Adaptive responses to RT include the enhancements of general health, body composition, and athletic performance ( Kraemer et al., 2002a ). For each purpose, different RT schemes are recommended through manipulation of the acute training variables, such as the load, volume, frequency, rest interval, velocity of execution, range of motion, as well as the choice and order of exercises ( American College of Sports Medicine [ACSM
Jakub Chycki, Miłośz Czuba, Artur Gołaś, Adam Zając, Olga Fidos-Czuba, Adrian Młynarz and Wojciech Smółka
accelerated the increase in muscle strength ( Nishimura et al., 2010 ). According to a recent report, occlusion training (i.e., local hypoxia) alone can limit muscle atrophy in case of muscle disuse and induce hypertrophy when coupled with resistancetraining ( Loenneke et al., 2012 ). However, there appears to be a threshold corresponding to ~4500 m of altitude above which hypoxia does not induce any beneficial effects on muscle hypertrophy when combined with resistancetraining ( Friedman et al., 2003 ).
Based on the above observations, we attempted to test in a
Moisés S.S. R. Sousa, Francisco J.F. Saavedra, Gabriel R. Neto, Giovanni S. Novaes, Antonio C. R. Souza, Verônica P. Salerno and Jefferson S. Novaes
Med, 2002; 1: 31-41
Hameed UA, Manzar D, Raza S, Shareef MY, Hussain ME. Resistancetraining leads to clinically meaningful improvements in control of glycemia and muscular strength in untrained middle-aged patients with type 2 diabetes mellitus. N Am J Med Sci, 2012; 4: 336-343
Hunter GR, McCarthy JP, Bamman MM. Effects of resistancetraining on older adults. Sports Med, 2004; 34: 329-348
Kaminsky LA. ACSM's resource manual for Guidelines for exercise testing and prescription (5 ed.). Baltimore, MD: Lippincott
Stanisław Poprzecki, Adam Zając, Miłosz Czuba and Zbigniew Waskiewicz
Arciero P. J., Hannibal N. S.,3 rd , Nindl B. C., Gentile C. L., Hamed J., Vukovich M. D. Comparison of creatine ingestion and resistancetraining on energy expenditure and limb blood flow. Metabolism. 2001, 50:1429-1434.
Bessman S. P., Geiger P. J. Transport of energy in muscle: the phosphorylcreatine shuttle. Science , 1981, 211: 448-452.
Branch J. D. Effect of creatine supplementation on body composition and performance:A meta-analysis. Int. J. Sports Nutr. Exerc
Alex S. Ribeiro, Ademar Avelar, Brad J. Schoenfeld, Michele C.C. Trindade, Raphael M. Ritti-Dias, Leandro R. Altimari and Edilson S. Cyrino
Abe T, DeHoyos DV, Pollock ML, Garzarella L. Time course for strength and muscle thickness changes following upper and lower body resistancetraining in men and women. Eur J Appl Physiol, 2000; 81: 174-180
American College of Sports Medicine position stand. Progression models in resistancetraining for healthy adults. Med Sci Sports Exerc, 2009; 41: 687-708
Avin KG, Naughton MR, Ford BW, Moore HE, Monitto-Webber MN, Stark AM, Gentile AJ, Law LA. Sex differences in fatigue resistance are muscle group
Carlos Eduardo C. Martins, Vanessa B. de Sousa Lima, Henrique Quintas T. Ribeiro and Julio Tirapegui
with type 2 diabetes mellitus. Arch Phys Med Rehabil 86, 1527–1533, 2005.
Costa RR, Lima AC, Tagliari M, Martins KLF. Effects of resistancetraining on the lipid profile in obese women. J Sports Med Phys Fitness 51, 169–177, 2011.
D’Souza DM, Al-Sajee D, Hawke TJ. Diabetic myopathy: impact of diabetes mellitus on skeletal muscle progenitor cells. Front Physiol 20, 379, 2013.
Donato JJr, Pedrosa RG, Cruzat VF, Pires IS, Tirapegui J. Effects of leucine supplementation on the body composition and protein status of rats submitted to food restriction
. Recent findings. Sports Med., 35(2): 107-125. DOI: 10.2165/00007256-200535020-00002.
4. Bemben M.G., Witten M.S., Carter J.M., Eliot K.A., Kne-hans A.W., Bemben D.A. (2010) The effects of supplementation with creatine and protein on muscle strength following a traditional resistancetraining program in middle-aged and older men. J. Nutr. Health. Aging , 14(2): 155-159. DOI: 10.1007/s12603-009-0124-8.
5. Beyleroglu M. (2011) The effects of maximal aerobic exercise on cortisol and thyroid hormones in male field hockey players. Afr. J. Pharm. Pharmacol
Paulo Gentil, Fabricio Boscolo Del Vecchio, Antonio Paoli, Brad J Schoenfeld and Martim Bottaro
previously proposed ( Bland et al., 1986 ). Although the agreement between strength measures seems to be a basic question to be asked, we were not able to find any studies directly addressing this issue. Therefore, the purpose of this study was to compare strength gains assessed by leg press 1RM and knee extensors PT tests in young men undergoing resistancetraining.
Material and Methods
The participants performed 11 week
resistancetraining, conducted twice a week, with a minimum interval of 48 hours between following sessions. Initially