INFLUENCE OF MAXIMAL ISOMETRIC STRENGTH ON 20-METER SPRINT TIME

ABSTRACT Introduction The squat is an exercise that widely used for the development of strength in sports. However, considering not all sports gestures are vertical, it important to investigate effectiveness propulsive force stimuli applied different planes. Objective main purpose this study was determine influence maximum isometric (MIF) exerted on starting blocks over performance 5, 10 and 20-meter sprints. Methods Seven high-level male sprinters (mean age ± SD = 28 5.77 years) participated study. variables were: a) MIF squats (measured using a functional electromechanical dynamometer [FEMD]), b) time 20-m sprints c) jump height by test). For data analysis, Pearson correlation performed between variables. criteria interpreting r coefficients were as follows: trivial (<0.1), small (0.1−0.3), moderate (0.3−0.5), high (0.5−0.7), very (0.7−0.9), or practically perfect (>0.9). level significance p < 0.05. Results There first meters sprint (5-m: -0.84, 0.01). there -0.22, 0.62). Conclusion correlates with athletes. In addition, use FEMD provides wide range possibilities evaluation controlled natural movement. Level evidence IV; Prognostic Studies - Case series.