EISSN 1676-5133 Copyright© 2002 por Colégio Brasileiro de Atividade Física, Saúde e Esporte Mar/Apr 2002 Fit Perf J Rio de Janeiro 1 2 Correspondence to: Submitted: Accepted: January / 2002 February / 2002 Original Article doi:10.3900/fpj.1.2.29.e Effect of force training on flexibility Carlos Eduardo Cossenza Rodrigues Programa de Pós-graduação Stricto Sensu em Ciência da Motricidade Humana da Universidade Castelo Branco/RJ ccossenza@openlink.com.br Rodrigues, C.E.C.; Dantas, E.H.M. Effect of force training on flexibility. Fitness & Performance Journal, v.1, n.2, p.29-40, 2002. ABSTRACT: The purpose of this study is to establish the possible variation between the gain rate in muscular strength and flexibility due to force training. The research was carried out with a sample of 31 men, users of Rio Sport Center, within age bracket of 20 to 30 years. Inclusion factors were: having been working out at least three months; being users of Rio Sport Center. The measuring made was: 1RM test for bending and supine and hip and knee goniometry, using the CARCI plastic goniometer. Descriptive Statistics techniques were funda- mentally used in relation to statistical treatment.The results found, according to basic statistical data of description of mean values of the va- riables age, height, body mass, cutaneous fold and perimeter, presented a homogenous behavior, indicating normal distributions. Thus, we could treat the sample as a whole and not in a subdivided form. In synthesis, there was homogeneity in the population observed. The results of the mean values of the independent variables, dynamic force of bending and supine, presented a value corresponding to 35.70% and 43.08%, respectively, of the world record (Leighton, 1987), what characterized the assessed group as having a good strength level. The results found, according to basic statistical data of description of mean values of dependent variables, assessed joints flexibility, presented a maximum value, higher in all assessed movements, than those presented by the literature (American Academy of Orthopaedic Surgeons, 1965; American Medical Association, 1990 and Kapandji, 1990), what demonstrated a group with good flexibility.The results led to the conclusion that, for the studied group, with their respective characteristics, there is no correlation between dynamic force and flexibility. Keywords: dynamic force and flexibility Estélio Henrique Martin Dantas Programa de Pós-graduação Stricto Sensu em Ciência da Motricidade Humana da Universidade Castelo Branco/RJ estélio@ism.com.br 29-40